词汇 | ecdysis |
释义 | BETA Examples of ecdysisecdysis isn’t in the Cambridge Dictionary yet. You can help! As adults, isopods differ from other crustaceans in that ecdysis occurs in two stages known as biphasic moulting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This shedding event occurs four times throughout development in a process called ecdysis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some have no externally visible legs at all (though they have internal rudiments that emerge as adult legs at the final ecdysis). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He also studied other physiological phenomena in insects, such as breathing, hibernation, the development of pigment under different conditions, and ecdysis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The actual process of ecdysis was never witnessed. However, in most species, spermatogenesis stops after the development of secondary spermatogonia during adult ecdysis and remains arrested until the adult male begins feeding. After four days each nymph was re-weighed and the time from hatching to ecdysis was recorded. After bagging, nymphs were left undisturbed and observed daily until ecdysis or death. The larva in each container was observed daily for ecdysis. Adults enter into copulation five days after the last ecdysis. After four days, each nymph was re-weighed and the time from hatching to ecdysis was recorded. The fourth ecdysis occurs in an exactly similar manner to the third. After ecdysis the pupa was pale greenish, but it rapidly hardened and darkened to brown with traces of green coloration under the wings. The high susceptibility of these strongyle worms seen in this study may well be related to parasite vulnerability during ecdysis, as seems to occur in vitro. Nymphs were reared under glasshouse conditions (as above) and observed daily until ecdysis. Larvae have four instars and at the third ecdysis there is a marked colour change. Ecdysis takes place within a slight cocoon in the feeding site. |
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