Vivipary
|
WikiDoc Resources for Vivipary |
|
Articles |
|---|
|
Most recent articles on Vivipary |
|
Media |
|
Evidence Based Medicine |
|
Clinical Trials |
|
Ongoing Trials on Vivipary at Clinical Trials.gov Clinical Trials on Vivipary at Google
|
|
Guidelines / Policies / Govt |
|
US National Guidelines Clearinghouse on Vivipary
|
|
Books |
|
News |
|
Commentary |
|
Definitions |
|
Patient Resources / Community |
|
Directions to Hospitals Treating Vivipary Risk calculators and risk factors for Vivipary
|
|
Healthcare Provider Resources |
|
Causes & Risk Factors for Vivipary |
|
Continuing Medical Education (CME) |
|
International |
|
|
|
Business |
|
Experimental / Informatics |
Overview
A viviparous animal is an animal employing vivipary: the embryo develops inside the body of the mother, as opposed to outside in an egg (ovipary). The mother then gives live birth. The less developed form of vivipary is called ovoviviparity, which, for instance, occurs in most vipers. The more developed form of vivipary is called placental viviparity; mammals are the best example, but it has also evolved independently in other animals, such as in scorpions, some sharks, and in velvet worms. Viviparous offspring live independently and require an external food supply from birth. Certain lizards also employ this method such as the Genus Tiliqua and Corucia. The placenta is attached directly to the mother in these lizards which is called viviparous matrotrophy.
See also
Template:Reproductive physiology
ca:Vivípar de:Viviparie ga:Beobhreitheach hr:Viviparnost it:Vivipari nl:Viviparie uk:Живородний