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11
votes
1answer
309 views

Why do crabs spit?

Last year I photographed this juvenile Sally Lightfoot Crab (Grapsus grapsus) 'spitting' (click for larger view): I thought I'd look up more information on this behavior, but couldn't find any ...
9
votes
0answers
117 views

Selection for less efficient egg transfer in Human Botfly life cycle

I have heard that the Human Botfly transfers its eggs through other invertebrates [1], and it strikes my curiosity that if an insect could simply land on its host directly to deposit its eggs, then ...
0
votes
0answers
6 views

Fresh water prawn reproduction physiology

I like to know about Machrobrachium nobilli molting and spawning. The female animal was spawned after molting. How many days will it take for the maturation of egg? When the larvae will be released? ...
0
votes
0answers
12 views

Does urchin metamorphosis involve two animals?

An urchin larva becomes an adult urchin through metamorphosis. This fascinating documentary about metamorphosis suggests that the urchin larva "dies", being partially eaten by the new individual, the ...