Ovoviviparity


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Related to Ovoviviparity: oviparity, viviparity

Ovoviviparity

 

in animals, a method of reproduction in which the embryo develops in the maternal body but hatches only after extrusion of the egg. The embryo is not nourished by food from the mother. Ovoviviparity characterizes certain scorpions, gamasid mites, many lizards, the common adder, sea snakes, and somecolubrids.

References in periodicals archive ?
Most freshwater bivalves, including families of the order Unionoida, and the two veneroid families Sphacriidae and Corbiculidae, exhibit ovoviviparity and viviparity to various degrees.
Increased maternal investment in progeny through viviparity or ovoviviparity is often assumed to result in decreased fecundity.
Overall, four characteristics distinguish the species from most other commercial oysters: subtidal habitat, slow growth and small size, ovoviviparity, and large ostia influencing particle size selection (Couch & Hassler 1989).