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Fish Reproduction - Anatomy & Physiology (view source)
Revision as of 13:01, 29 July 2008
, 13:01, 29 July 2008no edit summary
* A degenerative process called follicular atresia reabsorbs vitellogenic oocytes not spawned.
* A degenerative process called follicular atresia reabsorbs vitellogenic oocytes not spawned.
** This process can also occur, but less frequently, in oocytes in other development stages.
** This process can also occur, but less frequently, in oocytes in other development stages.
== Oviparity ==
== Oviparity ==
* '''Intrauterine cannibalism''' is a rarely seen form of viviparity where the largest embryos in the uterus will eat their weaker and smaller siblings.
* '''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.
** Found in some sharks.
= Stages of Reproduction =
== Oocyte Development ==
* Gonadotrophin independent
* Dependent on body size
== Vitellogenesis ==
* Production of the yolk
* Longest phase of reproduction
== Oocyte Maturation ==
== Spawning ==
* Release of eggs and sperm
* Release into the optimum environment for fertilization to occur
* Mating behaviour displayed
== Recovery ==
* Body condition restored
* New oocyte developement
= Breeding Cycles =
= Breeding Cycles =