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Encyclopedia > Ovoviviparity

Ovoviviparous animals develop within eggs that remain within the mother's body up until they hatch or are about to hatch. This strategy of birth is known as ovoviviparity. It is similar to vivipary in that the embryo develops within the mother's body. Unlike the embryos of viviparous species, ovoviviparous embryos are nourished by the egg yolk rather than by the mother's body. However, the mother's body does provide gas exchange. Animalia redirects here. ... In most birds and reptiles, an egg (Latin ovum) is the zygote, resulting from fertilization of the ovum. ... Childbirth (also called labour, birth, partus or parturition) is the culmination of a human pregnancy with the emergence of a newborn infant/s from the mothers uterus. ... To meet Wikipedias quality standards and make it easier to understand, this article or section may require cleanup. ... It has been suggested that embryology be merged into this article or section. ... An egg yolk surrounded by the egg white An egg yolk is the part of an egg which serves as the food source for the developing embryo inside. ... Gas exchange or respiration takes place at a respiratory surface - a boundary between the external environment and the interior of the body. ...


Ovoviviparity is employed by many aquatic life forms such as fish and some sharks, reptiles, and invertebrates. The young of ovoviviparous amphibians are sometimes born as larvae, and undergo metamorphosis outside the body of the mother. A giant grouper at the Georgia Aquarium Fish are aquatic vertebrates that are typically cold-blooded; covered with scales, and equipped with two sets of paired fins and several unpaired fins. ... Orders Carcharhiniformes Heterodontiformes Hexanchiformes Lamniformes Orectolobiformes Pristiophoriformes Squaliformes Squatiniformes Symmoriida(extinct) Shark (superorder Selachimorpha) are fish with a full cartilaginous skeleton[1] and a streamlined body. ... Subclasses Anapsida Diapsida Synonyms Reptilia Laurenti, 1768 Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane, and members of the class Sauropsida. ... Invertebrate is a term that describes any animal without a spinal column. ... For other uses, see Amphibian (disambiguation). ... A larval insect A larva (Latin; plural larvae) is a juvenile form of animal with indirect development, undergoing metamorphosis (for example, insects or amphibians). ... A Pieris rapae larva An older Pieris rapae larva A Pieris rapae pupa A Pieris rapae adult Metamorphosis is a process in biology by which an individual physically develops after birth or hatching, and involves significant change in form as well as growth and differentiation. ...


See also


  Results from FactBites:
 
HotBot Web Search for ovoviviparous (245 words)
Ovoviviparous animals develop within eggs that remain within the mother's body up until they hatch or are about to hatch.
Ovoviviparous is the term used for reptiles that seem to give live birth.
Most sharks are ovoviviparous, hatching the eggs within the female and bearing live young.
MANUAL ON ARTEMIA PRODUCTION IN SALT PONDS IN THE PHILIPPINES (915 words)
Ovoviviparous reproduction: After fertilization the eggs are not surrounded by a shell but instead immediately develop further into naupliae in the broodpouch of the female.
In one batch of eggs produced in a female all eggs are either cysts or ovoviviparous eggs.
Per batch or reproductive cycle 50–200 cysts or naupliae are produced but in oviparous reproduction the number of offspring is generally lower than in ovoviviparous reproduction.
  More results at FactBites »

 
 

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