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Fish Reproduction - Anatomy & Physiology (view source)
Revision as of 12:51, 29 July 2008
, 12:51, 29 July 2008→Viviparity
== Viviparity ==
== Viviparity ==
* Mother retains the eggs
* Embryos receive nutrition from the mother.
** Usually have a structure analogous to the placenta seen in mammals connecting the mother's blood supply with the that of the embryo.
* The embryos of some viviparous fishes exhibit a behaviour known as '''oophagy''' where the developing embryos eat eggs produced by the mother.
* '''Intrauterine cannibalism''' is a rarely seen form of viviparity where the largest embryos in the uterus will eat their weaker and smaller siblings.
** Found in some sharks.
= Reproductive Endocrinology =
= Reproductive Endocrinology =