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Wednesday, February 5, 2014

Mating Strategies in Giant Cuttlefish

Kaitlin Smith Mating Strategies in Giant Cuttlefish mahogany apama, also cognise as the giant cuttle, is a species of cuttlefish that argon sexually dimorphic. Male Sepia apama are furnished with longer build up than females that are lined with tissue off the ventral margins (M. Norman et. al. 1999). Mating among Sepia apama involves the males utilise elaborate discolor displays in the form of stripes whim across the dorsal ness and across the webbing on their arms. The females, in turn, expect to chitchat which males color display she fancies most (M. Norman et. al. 1999). Sepia apama copulation occurs by the male transferring sperm cell packets, called spermatangia, to a pop located down the stairs the beak of the female that are internal sperm-storing organs called receptacles (M. Naud et. al. 2005). During this functioning of copulation, the female, which is polyandrous, displays patterns of dark blotches on their queasy bodies (M. Naud et. al. 2005). Once the transfer of sperm is complete, the female lays her bollock superstar by one part attaching each one apiece to the undersides of rocks and ledges using a gelatinous stalk before the bombard are fertilized by organism passed over the sperm pouch located below the mouth. During this whole process, the male remains tight-fitting by to ensure no other suitors try to touch with the female (M. Norman et. al. 1999). The ball of Sepia apama are larger than average aquatic nut and are lemon shaped. The eggs consist of having a jelly-like satellite layer, the chorion membrane, perivitelline fluid, and vitelline membrane that encloses the yolk and fertilized egg (E. Cronin and R. Seymour 2000). The female Sepia apama substructure store sperm for some(prenominal) different males prior to fertilization, which is why males watch the female close to ensure she doesnt mate with another(prenominal) male. Female decapod crustacean cephalopods, consisting of cuttlefish and squid, ha ve each a single or double sperm receptacle! (M. Naud and J. Havenhand, 2006). It has been be that females can use some(prenominal) of the...If you want to get a climb essay, order it on our website: OrderCustomPaper.com

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