Viviparus


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Viviparus

 

a genus of freshwater gastropod mollusks of the subclass Prosobranchia. The opening of the shell is covered by an operculum that permits Viviparus to survive unfavorable conditions. The young develop in the body of the mother and emerge fully formed (hence the name). Viviparus is widely distributed in stagnant bodies of water and in flowing streams. There are several species in the USSR; the most common is V. viviparus (shell up to 3.5 cm high).

References in periodicals archive ?
were also present, as well as the much smaller gastropod (snail) species Viviparus contectus and Valvata piscinalis.
This new record, as well as that of the mexcalpique Girardinichthys viviparus (Bustamante, 1837) in Lago Tecocomulco (Miranda et al.
71 -- (0-36) Viviparidae Viviparus -- -- bengalensis (Lamarck) Species St III St IV ANNELIDA Oligochaeta Tubificdae Tubifex tubifex 67.
unguis Mizelle Micropterus Gills Valid & Cronin, 1943 salmoides Amblosoma reelfooti Viviparus Mantle Valid Goodman, 1990 intertextus Cavity Athesmia reelfooti Gallinula Liver Bile Sy.
Efficacy of moxidectin pour-on against gastrointestinal nematodes and Dictyocaulus viviparus in cattle.
VERY PRETTY: Dictyocaulus viviparus, the cattle lungworm up close and personal.
In situ investigations on the respiration and behaviour of the eelpout Zoarces viviparus under short term hypoxia.
Gesner's Historia animalium, liber I, De quadrupedibus viviparus and liber II, oviparis (Zurich: C.
viviparus are more closely related to each other than to the other Atlantic species.
0 km section of Bayou Bartholomew: Campeloma decisum (Say, 1816), Viviparus subpurpureus (Say, 1829), and P.
The life cycle and development of Aspidogaster eonchicola in the snails, Viviparus malleatus and Goniobasis livescens.
3 Stagnicola palustris 3 Tenellia adspersa 3 Terebellides stroemi 3 Theodoxus fluviatilis 2 Trichoptera 3 Valvata macrostoma 2 Valvata piscinalis 3 Viviparus viviparus 2 Table 3.