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Anti-predator adaptation

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981: 599:. The idea behind Batesian mimicry is that predators that have tried to eat the unpalatable species learn to associate its colors and markings with an unpleasant taste. This results in the predator learning to avoid species displaying similar colours and markings, including Batesian mimics, which are in effect parasitic on the chemical or other defences of the unprofitable models. Some species of octopus can mimic a selection of other animals by changing their skin color, skin pattern and body motion. When a damselfish attacks an octopus, the octopus mimics a banded sea-snake. The model chosen varies with the octopus's predator and habitat. Most of these octopuses use Batesian mimicry, selecting an organism repulsive to predators as a model. 1274: 682: 136: 468:", causes the fawn's heart rate to drop from 155 to 38 beats per minute within one beat of the heart. This drop in heart rate can last up to two minutes, causing the fawn to experience a depressed breathing rate and decrease in movement, called tonic immobility. Tonic immobility is a reflex response that causes the fawn to enter a low body position that simulates the position of a corpse. Upon discovery of the fawn, the predator loses interest in the "dead" prey. Other symptoms of alarm bradycardia, such as salivation, urination, and defecation, can also cause the predator to lose interest. 900: 618: 22: 477: 755: 833: 437: 1188: 308: 246: 1346: 559: 187: 933: 385: 795: 929:
exceed those of lions for great distances, lions try to attack an ostrich when its head is down. By grouping, the ostriches present the lions with greater difficulty in determining how long the ostriches' heads stay down. Thus, although individual vigilance decreases, the overall vigilance of the group increases.
924:. Goshawks are less successful when attacking larger flocks of wood pigeons than they are when attacking smaller flocks. This is because the larger the flock size, the more likely it is that one bird will notice the hawk sooner and fly away. Once one pigeon flies off in alarm, the rest of the pigeons follow. Wild 41:. First, the predators approach their potential prey. Predators bite or try to swallow the hagfishes, but the hagfishes have already projected jets of slime (arrows) into the predators' mouths. Choking, the predators release the hagfishes and gag in an attempt to remove slime from their mouths and gill chambers. 670:. These fish have a sharp scalpel-like spine on the front of each of their tail fins, able to inflict deep wounds. The area around the spines is often brightly colored to advertise the defensive capability; predators often avoid the Sohal surgeonfish. Defensive spines may be detachable, barbed or poisonous. 1136:
secrete enormous amounts of mucus when it is provoked or stressed. The gelatinous slime has dramatic effects on the flow and viscosity of water, rapidly clogging the gills of any fish that attempt to capture hagfish; predators typically release the hagfish within seconds. Common predators of hagfish
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and his colleagues as an example of this. When stationary, a single zebra stands out because of its large size. To reduce the risk of attack, zebras often travel in herds. The striped patterns of all the zebras in the herd may confuse the predator, making it harder for the predator to focus in on an
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or other snake, a "chutter". The monkeys hearing these calls respond defensively, but differently in each case: to the eagle call, they look up and run into cover; to the leopard call, they run up into the trees; to the snake call, they stand on two legs and look around for snakes, and on seeing the
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also seeds of plants, make use of poisonous chemicals for self-defence. These may be concentrated in surface structures such as spines or glands, giving an attacker a taste of the chemicals before it actually bites or swallows the prey animal: many toxins are bitter-tasting. A last-ditch defence is
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in Tsavo National Park in Kenya feed either alone or in groups of up to four birds. They are subject to predation by lions. As the ostrich group size increases, the frequency at which each individual raises its head to look for predators decreases. Because ostriches are able to run at speeds that
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to explain why animals seek central positions in a group. The theory's central idea is to reduce the individual's domain of danger. A domain of danger is the area within the group in which the individual is more likely to be attacked by a predator. The center of the group has the lowest domain of
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of North America have evolved to eliminate their shadow and blend in with the ground. The bodies of these lizards are flattened, and their sides thin towards the edge. This body form, along with the white scales fringed along their sides, allows the lizards to effectively hide their shadows. In
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A radical strategy for avoiding predators which may otherwise kill a large majority of the emerging stage of a population is to emerge very rarely, at irregular intervals. Predators with a life-cycle of one or a few years are unable to reproduce rapidly enough in response to such an emergence.
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occurs when an organism (the mimic) simulates signal properties of another organism (the model) to confuse a third organism. This results in the mimic gaining protection, food, and mating advantages. There are two classical types of defensive mimicry: Batesian and Müllerian. Both involve
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when threatened. The stomach oil is made from their aquatic diets. It causes the predator's feathers to mat, leading to the loss of flying ability and the loss of water repellency. This is especially dangerous for aquatic birds because their water repellent feathers protect them from
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are able to shoot squirts of blood from their eyes, by rapidly increasing the blood pressure within the eye sockets, if threatened. Because an individual may lose up to 53% of blood in a single squirt, this is only used against persistent predators like foxes, wolves and coyotes
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uses any combination of materials, coloration, or illumination for concealment to make the organism hard to detect by sight. It is common in both terrestrial and marine animals. Camouflage can be achieved in many different ways, such as through resemblance to surroundings,
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used by animals to either avoid predation or to enhance prey hunting. Predation risk has long been recognized as critical in shaping behavioral decisions. For example, this predation risk is of prime importance in determining the time of evening emergence in echolocating
1152: 410:, jumping high with stiff legs and an arched back. This is thought to signal to predators that they have a high level of fitness and can outrun the predator. As a result, predators may choose to pursue a different prey that is less likely to outrun them. 971:
Defensive structures such as spines may be used both to ward off attack as already mentioned, and if need be to fight back against a predator. Methods of fighting back include chemical defences, mobbing, defensive regurgitation, and suicidal altruism.
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are insects that live on the surface of fresh water, and are attacked from beneath by predatory fish. Experiments varying the group size of the water striders showed that the attack rate per individual water strider decreases as group size increases.
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with zigzagging or jinking flight. In the tropical rain forests of Southeast Asia in particular, many vertebrates escape predators by falling and gliding. Among the insects, many moths turn sharply, fall, or perform a powered dive in response to the
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In the improved vigilance effect, groups are able to detect predators sooner than solitary individuals. For many predators, success depends on surprise. If the prey is alerted early in an attack, they have an improved chance of escape. For example,
183:. They forage in relatively open habitats, and reduce their activity outside their nest burrows in response to moonlight. During a full moon, they shift their activity towards areas of relatively dense cover to compensate for the extra brightness. 370:, so as to scare off or momentarily distract a predator, thus giving the prey animal an opportunity to escape. In the absence of toxins or other defences, this is essentially bluffing, in contrast to aposematism which involves honest signals. 3375:
Eisner, Thomas; Jones, Tappey H.; Aneshansley, Daniel J.; Tschinkel, Walter R.; Silberglied, Robert E.; Meinwald, Jerrold (1977). "Chemistry of defensive secretions of bombardier beetles (Brachinini, Metriini, Ozaenini, Paussini)".
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has specialized glands on the tip of its abdomen that allows it to direct a toxic spray towards predators. The spray is generated explosively through oxidation of hydroquinones and is sprayed at a temperature of 100 °C.
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Individuals living in large groups may be safer from attack because the predator may be confused by the large group size. As the group moves, the predator has greater difficulty targeting an individual prey animal. The
3405: 1175:, a common predator. The male red colobus monkeys group together and place themselves between predators and the group's females and juveniles. The males jump together and actively bite the chimpanzees. 1622:
Daly, M.; Behrends, P.R.; Wilson, M.; Jacobs, L. (1992). "Behavioural modulation of predation risk: moonlight avoidance and crepuscular compensation in a nocturnal desert rodent, Dipodomys merriami".
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In communal defence, prey groups actively defend themselves by grouping together, and sometimes by attacking or mobbing a predator, rather than allowing themselves to be passive victims of predation.
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proposed that group living evolved because it provides benefits to the individual rather than to the group as a whole, which becomes more conspicuous as it becomes larger. One common example is the
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to protect the entire colony, so the self-destructive acts benefit all individuals in the colony. When a worker ant's leg is grasped, it suicidally expels the contents of its hypertrophied
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and other prey mammals flag with conspicuous (often black and white) tail markings when alarmed, informing the predator that it has been detected. Warning calls given by birds such as the
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chicks vomit a bright orange, foul smelling liquid when they sense danger. This repels prospective predators and may alert their parents to danger: they respond by delaying their return.
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often attacks these horses, sucking blood and carrying diseases. When the flies are most numerous, the horses gather in large groups, and individuals are indeed attacked less frequently.
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attract the attention of predators away from an object, typically the nest or young, that is being protected, as when some birds feign a broken wing while hopping about on the ground.
1302:, according to the animal's capabilities. Escape paths are often erratic, making it difficult for the predator to predict which way the prey will go next: for example, birds such as 60:. Throughout the animal kingdom, adaptations have evolved for every stage of this struggle, namely by avoiding detection, warding off attack, fighting back, or escaping when caught. 2519:"Crypsis, conspicuousness, mimicry and polyphenism as antipredator defences of foraging octopuses on Indo-Pacific coral reefs, with a method of quantifying crypsis form video tapes" 758:
In a group, prey seek central positions in order to reduce their domain of danger. Individuals along the outer edges of the group are more at risk of being targeted by the predator.
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are birds which may nest either solitarily or in colonies. Within colonies, fieldfares mob and defecate on approaching predators, shown experimentally to reduce predation levels.
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Peterson, Steven C., Nelson D. Johnson, and John L. LeGuyader (1987). "Defensive Regurgitation of Allelochemicals Derived From Host Cyanogenesis By Eastern Tent Caterpillars".
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accurately squirt venom from their fangs at the eyes of potential predators, striking their target eight times out of ten, and causing severe pain. Termite soldiers in the
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shed their tails when attacked: the tail goes on writhing for a while, distracting the predator, and giving the lizard time to escape; a smaller tail slowly regrows.
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Geffroy, Benjamin; Sadoul, Bastien; Putman, Breanna J.; Berger-Tal, Oded; Garamszegi, László Zsolt; Møller, Anders Pape; Blumstein, Daniel T. (22 September 2020).
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danger, so animals are predicted to strive constantly to gain this position. Testing Hamilton's selfish herd effect, Alta De Vos and Justin O'Rainn (2010) studied
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The normal reaction of a prey animal to an attacking predator is to flee by any available means, whether flying, gliding, falling, swimming, running, jumping,
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snake, they sometimes mob it. Similar calls are found in other species of monkey, while birds also give different calls that elicit different responses.
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Derby, Charles D. (December 2007). "Escape by Inking and Secreting: Marine Molluscs Avoid Predators Through a Rich Array of Chemicals and Mechanisms".
678:'s short spines, which are modified hairs, readily bend, and are barbed into the body, so they are not easily lost; they may be jabbed at an attacker. 3504: 179:. This results in an optimum evening emergence time that is a compromise between the conflicting demands. Another nocturnal adaptation can be seen in 4287: 1721: 3952: 3901: 457:
death to avoid being attacked by predators seeking live prey. Thanatosis can also be used by the predator in order to lure prey into approaching.
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A dilution effect is seen when animals living in a group "dilute" their risk of attack, each individual being just one of many in the group.
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Alboni, Paolo; Alboni, Marco; Bertorelle, Giorgio (2008). "The origin of vasovagal syncope: to protect the heart or to escape predation?".
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regurgitate when disturbed by ants. The vomit of noctuid moths has repellent and irritant properties that help to deter predator attacks.
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Sherbrooke, W.C. (2001). "Do vertebral-line patterns in two horned lizards (Phrynosoma spp.) mimic plant-stem shadows and stem litter?".
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Foster, W.A.; Treherne, J.E. (1981). "Evidence for the dilution effect in the selfish herd from fish predation on a marine insect".
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in a last-ditch attempt to elude a predator's grasp or to distract the predator and thereby allow escape. The lost body part may be
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Stanford, Craig B (1995). "The influence of chimpanzee predation on group size and anti-predator behavior in red colobus monkeys".
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is the harassing of a predator by many prey animals. Mobbing is usually done to protect the young in social colonies. For example,
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had markedly reduced the antipredator responses of animals such as rats and pigeons; similar changes are observed in captive and
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give themselves a last chance to escape by distracting their attackers. To do this, they eject a mixture of chemicals, which may
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of fish. Experiments provide direct evidence for the decrease in individual attack rate seen with group living, for example in
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Another way to remain unattacked in plain sight is to look different from other members of the same species. Predators such as
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Jones, T.H.; Clark, D.A.; Edwards, A.; Davidson, D.W.; Spande, T.F.; Snelling, R.R. (2004). "The chemistry of exploding ants,
269:, a South American bird, habitually perches on a tree, convincingly resembling a broken stump of a branch, while a butterfly, 4066: 3324: 3028: 2736: 2257: 1924:
Bergstrom, C. T.; Lachmann, M. (2001). "Alarm calls as costly signals of antipredator vigilance: the watchful babbler game".
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Predators may feast on the emerging population, but are unable to consume more than a fraction of the brief surfeit of prey.
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spines are long, stiff, break at the tip, and in some species are barbed to stick into a would-be predator. In contrast, the
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Andersson, Malte; Wiklund, Christer G. (1978). "Clumping versus spacing out: Experiments on nest predation in fieldfares (
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fawns, which experience a drop in heart rate in response to approaching predators. This response, referred to as "alarm
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Pursuit-deterrent signals are behavioral signals used by prey to convince predators not to pursue them. For example,
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Duncan, P.; Vigne, N. (1979). "The effect of group size in horses on the rate of attacks by blood-sucking flies".
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is a sharp, needle-like structure used to inflict pain on predators. An example of this seen in nature is in the
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include seabirds, pinnipeds and cetaceans, but few fish, suggesting that predatory fish avoid hagfish as prey.
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Group living can decrease the risk of predation to the individual in a variety of ways, as described below.
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Alternatively, prey animals may ward off attack, whether by advertising the presence of strong defences in
3508: 2989: 1754:(2005). "The role of eyespots as anti-predator mechanisms, principally demonstrated in the Lepidoptera". 1729: 1751: 955: 614:. Birds avoid eating both species because their wing patterns honestly signal their unpleasant taste. 1446: 1164: 1146: 959:
individual zebra. Furthermore, when moving rapidly, the zebra stripes create a confusing, flickering
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selectively hunt for abundant types of insect, ignoring less common types that were present, forming
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Vincent, J. F. V.; Owers, P. (1986). "Mechanical design of hedgehog spines and porcupine quills".
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Many animals are protected against predators with armour in the form of hard shells (such as most
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regurgitates a droplet of digestive fluid to repel attacking ants. Similarly, larvae of the
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Derby, Charles D.; Kicklighter, Cynthia E.; Johnson, P. M. & Xu Zhang (29 March 2007).
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or otherwise confuse predators. In response to a predator, animals in these groups release
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addition, these lizards hide any remaining shadows by pressing their bodies to the ground.
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follows a zigzagging path, often doubling back erratically, when chased by a fish-eating
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Some prey animals are able to eject noxious materials to deter predators actively. The
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Endler, J. A. (1981). "An overview of the relationships between mimicry and crypsis".
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The first line of defence consists in avoiding detection, through mechanisms such as
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Holen, O.H.; Johnstone, R. A. (2004). "The Evolution of Mimicry under Constraints".
2405: 1990: 1910: 1867: 1783: 825:, which emerge at intervals of 13 or 17 years, are often used as an example of this 617: 21: 4187: 4169: 3991: 3932: 3875: 3830: 3820: 3773: 3732: 3685: 3608: 3577: 3475: 3444: 3385: 3286: 3214: 3157: 3147: 3108: 3073: 2998: 2952: 2944: 2905: 2871: 2859: 2816: 2780: 2775: 2765: 2707: 2622: 2614: 2587: 2567: 2538: 2489: 2481: 2435: 2385: 2364:
Ritland, D. B. (1995). "Comparative unpalatability of mimetic viceroy butterflies (
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Hingston, R. W. G. (1927). "The liquid-squirting habit of oriental grasshoppers".
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Murphy, Shannon M.; Leahy, Susannah M.; Williams, Laila S.; Lill, John T. (2010).
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Avoiding Attack: The Evolutionary Ecology of Crypsis, Warning Signals and Mimicry
4174: 3825: 3409: 2424:"Contributions to an insect fauna of the Amazon valley. Lepidoptera: Heliconidae" 2211: 1380:
can sacrifice a claw, which can be regrown over several successive moults; among
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can distract predators, continuing to writhe while the lizard makes its escape.
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Some birds and insects use defensive regurgitation to ward off predators. The
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secrete noxious liquids when threatened, sometimes ejecting these forcefully.
4454: 4265: 4183: 3241:"The Incidence, Functions and Ecological Significance of Petrel Stomach Oils" 3240: 1434: 960: 875: 774: 731: 713: 453:. Thanatosis is a form of bluff in which an animal mimics its own dead body, 419: 317: 150:
Animals may avoid becoming prey by living out of sight of predators, whether
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Getty, T. (2002). "The discriminating babbler meets the optimal diet hawk".
829:, though other explanations of their unusual life-cycle have been proposed. 4395: 4238: 4201: 4003: 3844: 3746: 3581: 3526: 3489: 3171: 3152: 2966: 2948: 2661:; a remarkable case of mimicry in butterflies. (R. Meldola translation.)". 2636: 2618: 2579: 2543: 2518: 2503: 2485: 2397: 2346: 2321: 2203: 2145: 2060: 1982: 1947: 1775: 1522: 1324: 1230: 1114: 1026: 871: 865: 840: 754: 534:, affecting the predator's feeding senses, causing it to attack the cloud. 523: 493: 476: 415: 288: 180: 159: 143: 130: 3799:
Parejo, D; Avilés, JM; Peña, A; Sánchez, L; Ruano, F; et al. (2013).
3464:"The buccal buckle: The functional morphology of venom spitting in cobras" 3085: 2917: 1881:
Bildstein, Keith L. (May 1983). "Why White-Tailed Deer Flag Their Tails".
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Tropical rain forests : an ecological and biogeographical comparison
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Lim, Jeanette; Fudge, Douglas F.; Levy, Nimrod; Gosline, John M. (2006).
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Hulme, P. E.; Benkman, C. W. (2002). Herrera, C. M.; Pellmyr, O. (eds.).
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Sherbrooke, Wade C.; George, A. Middendorf III; Douglas, M. E. (2004).
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Pasteur, Georges (1982). "A classificatory review of mimicry systems".
1902: 1481:"Hagfish Slime as a Defense Mechanism against Gill-breathing Predators" 1404: 1403:
recorded observations (around 350 BC) of the antipredator behaviour of
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Stevens, M; Searle, WT; Seymour, JE; Marshall, KL; Ruxton, GD (2011).
1504: 4136: 3670:) to Antipredator Blood-Squirting and Blood of Texas Horned Lizards ( 2863: 2271: 2269: 2129: 1417: 1400: 1365: 1328: 1307: 1295: 1278: 743: 671: 656: 606:, two or more aposematic forms share the same warning signals, as in 355: 186: 155: 139: 76: 49: 3879: 3612: 3596: 3178: 2423: 1821: 4226: 3462:
Young, B. A.; Dunlap, K.; Koenig, K.; Singer, M. (September 2004).
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Bertram, Brian C. (1980). "Vigilance and group size in ostriches".
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wrote a compendious study of camouflage, mimicry, and aposematism,
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give different calls depending on the nature of the attack: for an
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Many species make use of behavioral strategies to deter predators.
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Smedley, Scott R., Elizabeth Ehrhardt, and Thomas Eisner (1993).
3721:"Hagfish Slime Ecomechanics: testing the gill-clogging mechanics" 3136:"Motion dazzle and camouflage as distinct anti-predator defenses" 1133: 1126: 1090: 925: 921: 883: 848: 652: 644: 577: 558: 549: 519: 503: 404: 271: 163: 87: 38: 3374: 2468:
Norman, Mark; Finn, Julian; Tregenza, Tom (September 7, 2001).
2160: 1430: 1389: 1349: 1156: 1101:. Seeds deter predation with combinations of toxic non-protein 1094: 794: 596: 389: 312: 2452: 4155: 4107: 4105: 4103: 4101: 3358: 3356: 1474: 1385: 1303: 951: 937: 879: 852: 844: 588:, or warning signals, to avoid being attacked by a predator. 515: 284: 266: 3133: 2982:"The ecology, behavior, and evolution of periodical cicadas" 3633: 1377: 1151: 343: 291:
of the desired prey. This creates a mechanism for negative
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An unusual type of predator deterrence is observed in the
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such as octopuses, make use of patterns of threatening or
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Duverge, P.L.; Jones, G; Rydell, J.; Ransome, R. (2000).
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similarly release blood at their joints when threatened (
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Pulliam, H. R. (1973). "On the advantages of flocking".
2516: 1824:. The Conchological Society of Great Britain and Ireland 1621: 802:: millions emerge at once, at long intervals, likely to 3798: 3663: 3461: 3037: 2751: 2517:
Hanlon, R.T.; Forsythe, J.W.; Joneschild, D.E. (1999).
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102:, by using defensive structures such as spines, and by 3265: 3263: 3261: 2979: 2368:) from four south-eastern United States populations". 2038: 1689: 1225:
Numerous insects utilize defensive regurgitation. The
1021:. Many insects acquire toxins from their food plants; 1728:. University of California, Riverside. Archived from 1701: 1580:"Functional significance of emergence timing in bats" 1159:
in defensive formation, horns ready, and highly alert
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for the animal's flesh itself to be toxic, as in the
704:, chooses larvae without spines when given a choice. 4034:(2nd ed.). Wiley-Blackwell. pp. 197, 200. 3594: 3234: 3232: 3230: 3228: 2663:
Proclamations of the Entomological Society of London
1677: 1665: 1573: 1571: 990:, exuding a drop of noxious red liquid (upper right) 4288:
Antipredatory Behavior lecture by William E. Cooper
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Transactions of the Entomological Society of London
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to the predator that the chase will be unprofitable
25:Anti-predator adaptation in action: the seal shark 4253: 3917:"Defensive Regurgitation by a Noctuid Moth Larva ( 2924: 2600: 2467: 2315: 2313: 2311: 2239: 1655: 1653: 573:, similar in appearance, unpalatable to predators. 4058:Trace Fossils: Biology, Taxonomy and Applications 4028:Corlett, Richard T.; Primack, Richard B. (2011). 3659: 3657: 3225: 3098: 2930: 1923: 1568: 1538: 1449: – Psychological impact induced by predators 18:Defensive feature of prey for selective advantage 4452: 3759: 3305: 3270:Davidson, D.W.; Salim, K.A.; Billen, J. (2011). 3502: 2308: 1650: 1541:Introduction to horned lizards of North America 1534: 1532: 3654: 3055: 2841: 2693: 2691: 2689: 2557: 2363: 1617: 1615: 1376:discard stinging papillae; arthropods such as 1207:vomits a bright orange, oily substance called 4308: 3023:. Oxford University Press. pp. 113–121. 2931:De Vos, A.; O'Riain, M. J. (September 2009). 2601:Norman, M.D.; Finn, J.; Tregenza, T. (2001). 2287: 2080: 2078: 1364:(self-amputation), shedding one of their own 874:that give warning of an attack. For example, 56:organisms in their constant struggle against 4081: 3951:: CS1 maint: multiple names: authors list ( 3900:: CS1 maint: multiple names: authors list ( 2697: 2603:"Dynamic Mimicry in an Indo-Malayan Octopus" 2470:"Dynamic mimicry in an Indo-Malayan octopus" 2084: 1529: 1458: – Plants' defenses against being eaten 373: 3418:blog, 28 July 2009, retrieved 17 March 2010 3200: 3198: 2806: 2718: 2686: 2359: 2357: 1842: 1612: 1429:By the 21st century, adaptation to life in 1171:monkeys exhibit mobbing when threatened by 90:animals which do possess such defences, by 4315: 4301: 4231:Antipredator Defenses in Birds and Mammals 4023: 4021: 3559: 2075: 1819: 1553: 1395: 1182: 655:), or tough chitinous exoskeletons (as in 543: 366:, such as suddenly displaying conspicuous 4338:Coloration evidence for natural selection 4191: 4173: 4135: 3936: 3834: 3824: 3736: 3525: 3479: 3161: 3151: 2956: 2888:(1971). "Geometry for the selfish herd". 2779: 2769: 2626: 2542: 2523:Biological Journal of the Linnean Society 2493: 2453:Stearns, Stephen; Hoekstra, Rolf (2005). 2345: 2326:Biological Journal of the Linnean Society 2290:Biological Journal of the Linnean Society 1937: 1880: 1603: 1512: 1004:Many prey animals, and to defend against 331: 4322: 4082:Kruszelnicki, Karl S. (August 9, 1999). 3634:Pianka, Erika R. & Wendy L. Hodges. 3434: 3204: 3195: 2973: 2884: 2683:. University of Hawaii Press. pp. 96–97. 2354: 2006:Annual Review of Ecology and Systematics 1790: 1344: 1272: 1186: 1150: 979: 931: 898: 831: 793: 773:The selfish herd theory was proposed by 753: 680: 616: 557: 475: 435: 383: 342:Many weakly-defended animals, including 321:, attempting to startle a predator with 306: 244: 185: 134: 20: 4251: 4123: 4111: 4048: 4018: 3430: 3428: 3426: 3424: 3362: 2794: 2724: 2457:. Oxford University Press. p. 464. 2003: 1997: 1796: 1750: 1132:The slime glands along the body of the 870:Animals that live in groups often give 638: 488:from its nest by feigning a broken wing 124: 4453: 3238: 2980:Williams, K.S. & C. Simon (1995). 2800: 2649: 278: 265:as inedible objects. For example, the 4296: 4094:from the original on October 1, 2016. 3959: 3638:. University of Texas. Archived from 3503:Mayell, Hillary (February 10, 2005). 2679:Thomas, Craig. Scott, Susan. (1997). 2418: 2412: 2115: 2109: 1968: 1475:Zintzen, Vincent; Roberts, Clive D.; 1120:A few vertebrate species such as the 944: 894: 789: 302: 113: 4237: 4225: 4075: 3421: 3043: 1822:"Octopus vulgaris. Dymantic display" 1707: 1695: 1683: 1671: 1659: 1236: 1195:chick protects itself with a jet of 975: 954:has been suggested by the zoologist 707: 449:Another pursuit-deterrent signal is 4145:. Vol. IX. pp. 621b–622a. 3725:The Journal of Experimental Biology 3003:10.1146/annurev.en.40.010195.001413 2428:Transactions of the Linnean Society 2248:(2nd ed.). CRC Press. p.  2018:10.1146/annurev.es.13.110182.001125 1140: 963:effect in the eye of the predator. 261:Animals can hide in plain sight by 98:that pursuit is not worthwhile, by 13: 3996:10.1023/b:joec.0000042063.01424.28 3449:10.1111/j.1365-2311.1927.tb00060.x 2712:10.1111/j.1469-7998.1986.tb03620.x 2440:10.1111/j.1096-3642.1860.tb00146.x 2320:Holmgren, H.; Enquist, M. (1999). 2302:10.1111/j.1095-8312.1981.tb01840.x 1719: 1605:10.1111/j.1600-0587.2000.tb00258.x 721: 696:Many species of slug caterpillar, 14: 4487: 4281: 3190:Ruxton, Sherratt & Speed 2004 2276:Ruxton, Sherratt & Speed 2004 886:or other cat, a loud bark; for a 651:), leathery or scaly skin (as in 48:are mechanisms developed through 2607:Proceedings: Biological Sciences 2474:Proceedings: Biological Sciences 966: 940:is hard to catch amongst a herd. 4149: 4129: 3925:Psyche: A Journal of Entomology 3908: 3851: 3792: 3753: 3712: 3627: 3553: 3532:Sociobiology: the New Synthesis 3519: 3496: 3468:Journal of Experimental Biology 3455: 3396: 3368: 3319:. Blackwell. pp. 132–154. 3127: 3092: 3049: 3009: 2878: 2835: 2745: 2673: 2643: 2594: 2551: 2510: 2461: 2446: 2322:"Dynamics of mimicry evolution" 2281: 2233: 2097:from the original on 2021-09-24 2032: 1962: 1917: 1874: 1836: 1813: 1744: 1713: 1456:Plant defense against herbivory 762: 425: 275:, looks just like a dead leaf. 4244:Adaptive Coloration in Animals 4233:. University of Chicago Press. 3248:New Zealand Ecological Society 2890:Journal of Theoretical Biology 2731:. Reaktion Books. p. 10. 2725:Warwick, Hugh (15 June 2014). 2085:Inman, Mason (29 March 2005). 1820:Smith, Ian (3 December 2012). 1557:Adaptive Coloration in Animals 1547: 1468: 1423:Adaptive Coloration in Animals 1025:caterpillars accumulate toxic 907:, chases up an alert flock of 859: 471: 460:An example of this is seen in 1: 4084:"Real Wheel Animals—Part Two" 4061:. Routledge. pp. 69–72. 3113:10.1016/S0003-3472(80)80030-3 1860:10.1016/S0003-3472(86)80052-5 1636:10.1016/s0003-3472(05)80748-1 1462: 293:frequency-dependent selection 240: 205: 197:, its flattened, fringed and 4272:; Speed, Michael P. (2004). 4175:10.1371/journal.pbio.3000818 4055:Bromley, Richard G. (2012). 3826:10.1371/journal.pone.0068862 3778:10.1016/0003-3472(78)90110-0 3390:10.1016/0022-1910(77)90162-7 3378:Journal of Insect Physiology 3219:10.1016/0003-3472(95)90033-0 3078:10.1016/0022-5193(73)90184-7 2910:10.1016/0022-5193(71)90189-5 2821:10.1016/0003-3472(79)90201-x 2087:"Sea Hares Lose Their Lunch" 1560:. London: Methuen. pp.  1360:Some animals are capable of 1113:and amylase inhibitors, and 882:, a disyllabic cough; for a 7: 3976:Journal of Chemical Ecology 2990:Annual Review of Entomology 2240:Barrows, Edward M. (2001). 2176:Journal of Chemical Ecology 2041:Clinical Autonomic Research 1440: 1334: 1314:evade fast raptors such as 1268: 106:. Members of groups are at 10: 4492: 4247:. Oxford University Press. 4219: 2455:Evolution: An Introduction 1539:Sherbrooke, W. C. (2003). 1338: 1240: 1144: 993: 920:flocks are preyed upon by 863: 809: 766: 711: 547: 491: 451:thanatosis or playing dead 429: 377: 335: 209: 128: 117: 96:signalling to the predator 4378: 4330: 4252:Edmunds, Malcolm (1974). 3666:"Responses of Kit Foxes ( 3291:10.1007/s00040-011-0210-x 2196:10.1007/s10886-007-9279-0 2053:10.1007/s10286-008-0479-7 1797:Edmunds, Malcolm (2012). 1768:10.1017/S1464793105006810 1447:Ecology of fear (concept) 1289: 1285:fly from possible danger. 1147:Mobbing (animal behavior) 374:Pursuit-deterrent signals 108:reduced risk of predation 75:, living underground, or 46:Anti-predator adaptations 37:(d–f) attempt to prey on 4476:Antipredator adaptations 4391:Anti-predator adaptation 4088:Great Moments in Science 3537:Harvard University Press 3019:; Harper, David (2003). 1722:"Antipredatory Behavior" 1227:eastern tent caterpillar 984:The bloody-nose beetle, 843:that warn of attacks by 742:in Southern France. The 530:, creating a cloud, and 224:, shadow elimination by 31:(a–c) and the wreckfish 4365:Paradox of the plankton 2560:The American Naturalist 2118:The Biological Bulletin 1883:The American Naturalist 1396:History of observations 1249:Malaysian exploding ant 1183:Defensive regurgitation 544:Mimicry and aposematism 441:Eastern hog-nosed snake 234:flat-tail horned lizard 201:body eliminating shadow 195:flat-tail horned lizard 4142:The History of Animals 3582:10.1006/jare.2001.0852 3153:10.1186/1741-7007-9-81 2949:10.1098/rsbl.2009.0628 2619:10.1098/rspb.2001.1708 2544:10.1006/bijl.1998.0264 2486:10.1098/rspb.2001.1708 2347:10.1006/bijl.1998.0269 1983:10.1006/anbe.2001.1890 1948:10.1006/anbe.2000.1636 1357: 1286: 1216:when diving for food. 1200: 1160: 1049:). Several species of 991: 941: 912: 856: 807: 759: 693: 635: 574: 489: 486:distracting a predator 446: 400: 332:Startling the predator 325: 258: 202: 199:disruptively patterned 147: 42: 4331:Patterns of evolution 3515:on November 10, 2005. 3239:Warham, John (1977). 2781:10.1093/beheco/arp166 2771:10.1093/beheco/arp166 2681:All Stings Considered 1348: 1276: 1241:Further information: 1190: 1154: 1145:Further information: 1107:cyanogenic glycosides 1074:Tegra novaehollandiae 994:Further information: 983: 935: 902: 835: 797: 757: 712:Further information: 684: 620: 561: 479: 439: 387: 378:Further information: 310: 248: 222:disruptive coloration 189: 138: 118:Further information: 24: 4343:Convergent evolution 4324:Evolutionary ecology 3919:Litoprosopus futilis 3539:. pp. 302–305. 3384:(11–12): 1383–1386. 1321:sonar clicks of bats 1261:submandibular glands 987:Timarcha tenebricosa 639:Defensive structures 538:Distraction displays 230:counter-illumination 125:Staying out of sight 34:Polyprion americanus 4416:Distraction display 4360:Divergent evolution 4270:Sherratt, Thomas N. 4126:, pp. 179–181. 4114:, pp. 145–149. 3988:2004JCEco..30.1479J 3972:Cylindricus complex 3872:1987Ecol...68.1268P 3817:2013PLoSO...868862P 3690:10.1643/ch-03-157r1 3672:Phrynosoma cornutum 3574:2002JArEn..50..109S 3509:National Geographic 3365:, pp. 189–201. 3070:1973JThBi..38..419P 3046:, pp. 115–149. 3017:Maynard Smith, John 2902:1971JThBi..31..295H 2856:1981Natur.293..466F 2797:, pp. 202–207. 2613:(1478): 1755–1758. 2535:1999BJLS...66....1H 2480:(1478): 1755–1758. 2382:1995Oecol.103..327R 2366:Limenitis archippus 2338:1999BJLS...66..145H 2221:on 15 November 2009 2188:2007JCEco..33.1105D 1799:"Deimatic Behavior" 1720:Cooper, William E. 1698:, pp. 318–320. 1596:2000Ecogr..23...32D 1554:Cott, H.B. (1940). 1497:2011NatSR...1E.131Z 1122:Texas horned lizard 1115:phytohemagglutinins 1056:Poecilocerus pictus 769:Selfish herd theory 612:monarch butterflies 498:distraction display 397:signalling honestly 364:startling behaviour 297:apostatic selection 279:Apostatic selection 193:illustrated by the 146:to avoid predators. 73:apostatic selection 4411:Deimatic behaviour 4370:Predator satiation 4355:Parallel evolution 4256:Defence in Animals 3938:10.1155/1993/67950 3408:2017-09-14 at the 2758:Behavioral Ecology 2700:Journal of Zoology 2390:10.1007/BF00328621 1756:Biological Reviews 1485:Scientific Reports 1477:Anderson, Marti J. 1410:History of Animals 1358: 1323:. Among fish, the 1312:black-headed gulls 1287: 1201: 1161: 1097:, functions as an 1068:Aularches miliaris 1062:Parasanaa donovani 1015:danaid butterflies 992: 945:Predator confusion 942: 913: 895:Improved vigilance 857: 827:predator satiation 823:Periodical cicadas 812:Predator satiation 808: 790:Predator satiation 784:great white sharks 760: 728:George C. Williams 694: 636: 633:warning coloration 624:Erethizon dorsatum 575: 490: 447: 401: 338:Deimatic behaviour 326: 323:deimatic behaviour 303:Warding off attack 259: 203: 148: 114:Avoiding detection 43: 4448: 4447: 4386:Signalling theory 4266:Ruxton, Graeme D. 4068:978-1-135-07607-8 3738:10.1242/jeb.02067 3527:O. Wilson, Edward 3481:10.1242/jeb.01170 3474:(20): 3483–3494. 3415:Discover Magazine 3326:978-0-632-05267-7 3192:, pp. 64–69. 3030:978-0-19852-685-8 2850:(5832): 466–467. 2738:978-1-78023-315-4 2259:978-0-8493-2005-7 2182:(33): 1105–1113. 1710:, pp. 61–65. 1686:, pp. 53–55. 1674:, pp. 35–60. 1505:10.1038/srep00131 1316:peregrine falcons 1237:Suicidal altruism 1047:autohaemorrhaging 1043:Armoured crickets 1038:bombardier beetle 1000:bombardier beetle 996:autohaemorrhaging 976:Chemical defences 816:Periodical cicada 804:satiate predators 800:periodical cicada 708:Safety in numbers 668:sohal surgeonfish 604:Müllerian mimicry 462:white-tailed deer 412:White-tailed deer 380:Signalling theory 104:living in a group 94:the attacker, by 4483: 4317: 4310: 4303: 4294: 4293: 4277: 4261: 4259: 4248: 4234: 4214: 4213: 4195: 4177: 4153: 4147: 4146: 4133: 4127: 4121: 4115: 4109: 4096: 4095: 4079: 4073: 4072: 4052: 4046: 4045: 4025: 4016: 4015: 3982:(8): 1479–1492. 3963: 3957: 3956: 3950: 3942: 3940: 3912: 3906: 3905: 3899: 3891: 3855: 3849: 3848: 3838: 3828: 3796: 3790: 3789: 3772:(4): 1207–1212. 3766:Animal Behaviour 3757: 3751: 3750: 3740: 3731:(Pt 4): 702–10. 3716: 3710: 3709: 3661: 3652: 3651: 3649: 3647: 3642:on 29 April 2011 3636:"Horned Lizards" 3631: 3625: 3624: 3592: 3586: 3585: 3557: 3551: 3550: 3523: 3517: 3516: 3511:. 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M. 1805:31 December 1405:cephalopods 1382:vertebrates 1370:regenerated 1325:stickleback 1253:hymenoptera 1214:hypothermia 1209:stomach oil 1197:stomach oil 1173:chimpanzees 1169:red colobus 1103:amino acids 1051:grasshopper 1011:puffer fish 918:wood pigeon 872:alarm calls 860:Alarm calls 698:Limacodidae 687:Limacodidae 554:aposematism 472:Distraction 466:bradycardia 360:cephalopods 348:butterflies 177:bat falcons 100:distraction 84:aposematism 4455:Categories 4430:Camouflage 4260:. Longman. 4239:Cott, Hugh 3968:Camponotus 1801:. Springer 1736:23 October 1463:References 1388:and other 1366:appendages 1283:partridges 1243:Autothysis 1177:Fieldfares 1053:including 702:paper wasp 689:slug moth 657:arthropods 586:coloration 583:aposematic 524:mimic food 512:cuttlefish 241:Masquerade 217:Camouflage 212:Camouflage 206:Camouflage 191:Camouflage 140:Fruit bats 69:masquerade 65:camouflage 4471:Predation 4466:Evolution 4276:. Oxford. 4227:Caro, Tim 4210:221864354 4184:1545-7885 4139:(1910) . 4137:Aristotle 3443:: 65–69. 3345:ignored ( 3335:cite book 3317:Granivory 3044:Caro 2005 2706:: 55–75. 2653:(1879). " 2370:Oecologia 2296:: 25–31. 1934:CiteSeerX 1828:1 January 1708:Caro 2005 1696:Cott 1940 1684:Caro 2005 1672:Caro 2005 1660:Cott 1940 1584:Ecography 1437:animals. 1418:Hugh Cott 1416:In 1940, 1401:Aristotle 1374:sea slugs 1329:merganser 1308:ptarmigan 1296:burrowing 1279:pheasants 1277:Startled 1251:. Social 1155:Group of 936:A single 926:ostriches 744:horse-fly 685:Stinging 672:Porcupine 520:octopuses 508:sea hares 173:bat hawks 160:nocturnal 92:startling 88:mimicking 58:predators 50:evolution 39:hagfishes 4461:Ethology 4348:examples 4241:(1940). 4229:(2005). 4202:32960897 4092:Archived 4012:23756265 4004:15537154 3845:23874791 3805:PLOS ONE 3786:53195968 3747:16449564 3706:55365586 3529:(2000). 3490:15339944 3406:Archived 3299:13257903 3285:: 1–10. 3254:: 84–93. 3172:22117898 3140:BMC Biol 3121:53144763 2967:19793737 2829:53154054 2728:Hedgehog 2669:: 20–29. 2659:Thyridia 2637:11522192 2580:15540150 2504:11522192 2422:(1961). 2406:13436225 2398:28306826 2204:17393278 2146:18083967 2138:25066645 2095:Archived 2061:18592129 1991:53164940 1911:83504795 1868:53155678 1784:24868603 1776:16221330 1523:22355648 1491:: 2011. 1441:See also 1362:autotomy 1354:autotomy 1341:Autotomy 1335:Autotomy 1269:Escaping 1257:altruism 1255:rely on 1157:muskoxen 1111:protease 1091:terpenes 922:goshawks 849:leopards 736:shoaling 676:hedgehog 653:reptiles 645:molluscs 506:such as 504:molluscs 484:plover, 482:killdeer 455:feigning 405:gazelles 393:stotting 368:eyespots 356:phasmids 352:mantises 152:in caves 144:by night 4435:Mimicry 4425:Crypsis 4379:Signals 4220:Sources 4193:7508406 3984:Bibcode 3888:1939211 3868:Bibcode 3860:Ecology 3836:3707886 3813:Bibcode 3698:1448486 3621:1446212 3570:Bibcode 3163:3257203 3086:4734745 3066:Bibcode 2958:2817263 2918:5104951 2898:Bibcode 2872:4365789 2852:Bibcode 2628:1088805 2588:8153271 2531:Bibcode 2495:1088805 2378:Bibcode 2334:Bibcode 2184:Bibcode 2154:9539618 2069:7739227 2026:2097066 1956:2295026 1903:2460873 1644:4077513 1630:: 1–9. 1592:Bibcode 1562:330–335 1514:3216612 1493:Bibcode 1407:in his 1390:lizards 1384:, many 1300:rolling 1165:Mobbing 1134:hagfish 1127:Canidae 1085:have a 884:leopard 649:turtles 608:viceroy 597:insects 578:Mimicry 567:monarch 563:Viceroy 550:mimicry 532:opaline 502:Marine 272:Kallima 164:crypsis 156:burrows 142:forage 4208:  4200:  4190:  4182:  4065:  4038:  4010:  4002:  3970:spp. ( 3886:  3843:  3833:  3784:  3745:  3704:  3696:  3678:Copeia 3619:  3601:Copeia 3543:  3488:  3323:  3297:  3170:  3160:  3146:: 81. 3119:  3084:  3027:  2965:  2955:  2916:  2870:  2844:Nature 2827:  2735:  2635:  2625:  2586:  2578:  2502:  2492:  2404:  2396:  2256:  2210:  2202:  2152:  2144:  2136:  2101:10 May 2067:  2059:  2024:  1989:  1954:  1936:  1909:  1901:  1866:  1782:  1774:  1642:  1521:  1511:  1431:cities 1386:geckos 1350:Lizard 1331:duck. 1290:Flight 1095:pinene 1071:, and 1023:Danaus 888:python 853:snakes 845:eagles 629:spines 390:impala 358:, and 313:mantis 4206:S2CID 4008:S2CID 3884:JSTOR 3782:S2CID 3702:S2CID 3694:JSTOR 3617:JSTOR 3295:S2CID 3275:(PDF) 3244:(PDF) 3117:S2CID 2985:(PDF) 2868:S2CID 2825:S2CID 2655:Ituna 2584:S2CID 2402:S2CID 2225:9 May 2219:(PDF) 2212:92064 2208:S2CID 2172:(PDF) 2150:S2CID 2134:JSTOR 2065:S2CID 2022:JSTOR 1987:S2CID 1952:S2CID 1907:S2CID 1899:JSTOR 1864:S2CID 1780:S2CID 1640:S2CID 1378:crabs 1352:tail 1304:snipe 952:zebra 938:zebra 880:eagle 664:spine 631:with 516:squid 344:moths 267:potoo 86:, by 4198:PMID 4180:ISSN 4063:ISBN 4036:ISBN 4000:PMID 3974:)". 3953:link 3902:link 3841:PMID 3764:)". 3743:PMID 3682:2004 3648:2013 3605:1992 3541:ISBN 3486:PMID 3347:help 3321:ISBN 3168:PMID 3082:PMID 3025:ISBN 2963:PMID 2914:PMID 2733:ISBN 2667:1879 2657:and 2633:PMID 2576:PMID 2500:PMID 2394:PMID 2254:ISBN 2227:2015 2200:PMID 2180:2007 2142:PMID 2103:2015 2057:PMID 1830:2013 1807:2012 1772:PMID 1738:2014 1726:IDEA 1519:PMID 1310:and 1281:and 1017:and 998:and 851:and 814:and 730:and 647:and 610:and 569:are 565:and 552:and 518:and 496:and 408:stot 285:tits 175:and 169:bats 54:prey 4188:PMC 4170:doi 3992:doi 3933:doi 3929:100 3876:doi 3831:PMC 3821:doi 3774:doi 3733:doi 3729:209 3686:doi 3609:doi 3578:doi 3476:doi 3472:207 3445:doi 3386:doi 3287:doi 3215:doi 3158:PMC 3148:doi 3109:doi 3074:doi 2999:doi 2953:PMC 2945:doi 2906:doi 2860:doi 2848:295 2817:doi 2776:hdl 2766:doi 2708:doi 2704:210 2623:PMC 2615:doi 2611:268 2568:doi 2564:164 2539:doi 2490:PMC 2482:doi 2478:268 2436:doi 2386:doi 2374:103 2342:doi 2298:doi 2250:177 2192:doi 2126:doi 2122:213 2049:doi 2014:doi 1979:doi 1944:doi 1891:doi 1887:121 1856:doi 1764:doi 1632:doi 1600:doi 1509:PMC 1501:doi 1298:or 1033:). 659:). 602:In 591:In 528:ink 388:An 228:or 4457:: 4268:; 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Index


Dalatias licha
Polyprion americanus
hagfishes
evolution
prey
predators
camouflage
masquerade
apostatic selection
nocturnality
aposematism
mimicking
startling
signalling to the predator
distraction
living in a group
reduced risk of predation
Prey detection
Nocturnality

Fruit bats
by night
in caves
burrows
nocturnal
crypsis
bats
bat hawks
bat falcons

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