Mating Strategies in Giant Cuttlefish

Kaitlin Smith Mating Strategies in Giant Cuttlefish sepia apama, also cognise as the giant cuttlefish, is a species of cuttlefish that argon sexually dimorphic. Male Sepia apama are weaponed with longer build up than females that are lined with web off the ventral margins (M. Norman et. al. 1999). Mating among Sepia apama involves the males apply elaborate emblazon displays in the form of stripes impetus across the dorsal ness and across the webbing on their arms. The females, in turn, examine to chitchat which males color display she fancies most (M. Norman et. al. 1999). Sepia apama copulation occurs by the male transferring spermatozoan packets, called spermatangia, to a pop located downstairs the beak of the female that are internal sperm-storing organs called receptacles (M. Naud et. al. 2005). During this swear out of copulation, the female, which is polyandrous, displays patterns of dark blotches on their queasy bodies (M. Naud et. al. 2005). Once the transf er of sperm is complete, the female lays her bollock superstar by one epoch attaching each one apiece to the undersides of rocks and ledges using a gelatinlike stalk before the bombard are fertilized by organism passed over the sperm pouch located below the mouth. During this completed process, the male remains tight-fitting by to ensure no other suitors try to touch with the female (M. Norman et.

al. 1999). The testicle of Sepia apama are larger than average aquatic eggs and are lemon shaped. The eggs consist of having a jelly-like outer(a) layer, the chorion membrane, perivitelline fluid, and vitelline me mbrane that encloses the yolk and fertilized! egg (E. Cronin and R. Seymour 2000). The female Sepia apama cornerstone store sperm for some(prenominal) different males prior to fertilization, which is why males watch the female close to ensure she doesnt mate with other male. Female decapod crustacean cephalopods, consisting of cuttlefish and squid, have each a single or double sperm receptacle (M. Naud and J. Havenhand, 2006). It has been plunge that females can use some(prenominal) of the...If you want to get a salutary essay, order it on our website: OrderCustomPaper.com

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