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Neck-formation and segmentation are only separated for clarity purposes. In reality, the two processes are simultaneous, with segmentation to release new ephyras occurring at the upper end while neck formation spreads further down the body. Usually, a portion of the animal remains adhered to the
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Segmentation: the number of constriction sites increases and migrates down the body length, transforming the body into a sequence of disks. The fissures intensify until the initial body is divided into equally spaced, separate segments. The oral end of the polyp becomes the oral end of the
161:, the whole body except for the head and the neck undergoes strobilation continuously, reflecting the important role reproduction plays in the parasitic mode of life. The strobilating section is called strobila, or scolex, and each of its segment is a
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Paludo, Gabriela Prado; Thompson, Claudia
Elizabeth; Miyamoto, Kendi Nishino; Guedes, Rafael Lucas Muniz; Zaha, Arnaldo; de Vasconcelos, Ana Tereza Ribeiro; Cancela, Martin; Ferreira, Henrique Bunselmeyer (2020-07-16).
119:. Strobilation tend to occur at specific periods, typically early spring. As ephyra size remains constant regardless of the polyp size, larger polyps produce more numerous ephyras.
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Strobilation is successfully induced in laboratory conditions by intensive feeding and temperature lowering, and also by the effect of artificial compounds.
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The process starts with preliminary morphological changes. In particular, the cnidarian's tentacles tend to be reabsorbed.
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Neck-formation: transverse constrictions appear near the upper extremity of the animal. A strobilating polyp is called a
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136:. Strobilation does not happen periodically, but is thought to be induced by external stimuli, such as
42:. This mode of reproduction is characterized by high offspring output, which, in the case of the
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products of the two previous processes now disappear.
199:(1). Springer Science and Business Media LLC: 487.
165:. As they mature, proglottids are disposed in the
140:, light regime, temperature, or food availability.
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111:stage and produces either polyps or juvenile
62:while the non-strobilating polyp is called a
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30:consisting of the spontaneous transverse
34:of the body. It is observed in certain
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46:tapeworms, is of great significance.
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145:Induction in laboratory conditions
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16:Form of asexual reproduction
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206:10.1186/s12864-020-06878-3
90:and regenerates the body.
50:Strobilation in cnidarians
153:Strobilation in helminths
253:Reproduction in animals
28:asexual reproduction
24:transverse fission
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32:segmentation
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124:scyphozoans
68:scyphopolyp
64:scyphistoma
247:Categories
173:References
163:proglottid
134:planuloids
126:, such as
36:cnidarians
258:Scyphozoa
215:1471-2164
88:substrate
44:parasitic
40:helminths
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94:Examples
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113:Medusae
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138:iodine
117:ephyra
167:feces
122:Some
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