viviparity


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Related to viviparity: territoriality, ovoviviparity

vi·vip·a·rous

 (vī-vĭp′ər-əs, vĭ-)
adj.
1. Zoology Giving birth to living offspring that develop within the mother's body. Most mammals and some other animals are viviparous.
2. Botany
a. Germinating or producing seeds that germinate before becoming detached from the parent plant, as in the mangrove.
b. Producing bulbils or new plants rather than seed, as in the tiger lily.

[From Latin vīviparus : vīvus, alive; see gwei- in Indo-European roots + -parus, -parous.]

vi′vi·par′i·ty (vī′və-păr′ĭ-tē, vĭv′ə-) n.
vi·vip′a·rous·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
viviparità
References in periodicals archive ?
It has a yolk sac viviparity mode of reproduction and has been reported to carry as many as 300 pups (Joung et al., 1996).
In viviparity, at 5 weeks, the midgut and allantoic membrane, as primordia of the small intestine and bladder, form a continued alveus with the hindgut and cloaca.
Fish viviparity: Diversity, biogeography, and conservation.
Some immunological and endocrineological problems raised by the evolution of viviparity in vertebrates.
(25) A series of knockout mouse studies on these genes has gathered persuasive evidence that at least some of these genes are essential in the current form of the developmental and reproductive systems, which suggests that they made critical contributions to mammalian evolution in a variety of ways, such as the establishment of viviparity (22-26) and presumably certain sophisticated brain functions.
This genus inhabits mainly lowland forests and evolved with a group of specializations related to viviparity, which are unique among reptiles and convergent only with placental mammals: a long period of gestation (9 to 12 months) and microlecithal eggs (0.92.2 mm) with a highly placentotrophic nutritional pattern (Blackburn & Vitt 1992; Blackburn 1993; Jerez & Ramirez 2001, 2003).
Mangroves get around this problem by developing a system of reproduction called viviparity, where seeds stay on the tree longer and store nutrients needed for rapid establishment and growth once they leave the 'parent' tree.
The literature in the area of evolutionary psychology suggests that, compared to males, viviparity and the development of the placenta placed an important burden of time and energy in females [106].
Convergent evolution of viviparity, matrotrophy, and specializations for fetal nutrition in reptiles and other vertebrates.
Heisermann, "Regulation of vitellogenesis in reptiles: correlations with oviparity and viviparity," in Proceedings of the 9th International Symposium on Comparative Endocrinology, Current Trends in Comparative Endocrinology, pp.
Shine, "Reptilian viviparity in cold climates: testing the assumptions of an evolutionary hypothesis," Oecologia, vol.