bryos developing inside the mothers' bodies are supplied with maternal nutrients (viviparous), or rely entirely on their yolk sacs (ovoviviparous
Sperm ultrastructure of an ivoparous and ovoviviparous
onychophoran species (Peripatopsidae) with some phylogenetic considerations.
Development is ovoviviparous
. Females mature at 50 cm (20 in) and males at 42 cm (17 in).
This species is ovoviviparous
, meaning that the eggs develop within the female and the young are born alive.
All modem snakes, whether they are egg laying (oviparous) or live bearing (ovoviviparous
), have the same basic oviductal anatomy.
The eggs may hatch inside the female (and are termed ovoviviparous
) or they may be laid by the female in large or small clusters for later hatching (oviparous).
Phrynosoma douglassi, the most widely distributed member of the genus Phrynosoma (Guyer and Under 1985) is ovoviviparous
and gives birth from early August to mid-September, to 3-15 young per year (Nussbaum et al.
Development of a true ovoviviparous
sea star, Asterina pseudoexigua pacifica Hayashi.
Able (1983) characterized all oviparous and ovoviviparous
members of Cyprinodontiformes as having some type of chorionic adornment (filaments, microfilaments, sculptured pits or spherical knobs).
The purpose of this paper is to examine the dispersal dynamics of the small ([less than]5 mm long) ovoviviparous
bivalve Gemma gemma (hereafter referred to as Gemma) in a disturbed, patchy environment.
Hatching within the brood sac of the ovoviviparous
isopod, Cirolana sp.
. No male or complete generative cycle in host.