Veliger


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Related to Veliger: trochophore, siphuncle, glochidia

veliger

[′vē·lə·jər]
(invertebrate zoology)
A mollusk larval stage following the trochophore, distinguished by an enlarged girdle of ciliated cells (velum).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Veliger

 

the larvae of many marine mollusks, similar to the trochophore (only Dreissensia among the freshwater mollusks). The veliger has a “leg,” an intestine, an eye, organs of equilibrium (statocysts), an embryonic shell (protoconch) into which the anterior part of the body is drawn in case of danger, and a velum—one, two, or more complexly dissected lobes covered with cilia and used for locomotion and capture of food. Certain veligers stay suspended in the water a long time, and within several weeks they travel with the current throughout the Atlantic Ocean. After settling to the bottom, the veliger is transformed into an adult mollusk.

V. A. SVESHNIKOV 4-1105-3]

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Capture of particles by direct interception by cilia during feeding of a gastropod veliger. Biol.
The veliger larval stage was reached 39.75 h (146.36 [micro]m) after fertilization, and the pediveliger larval stage was reached 21 days (355.36 [micro]m) after fertilization.
The hepatopancreatic [beta]1-like integrin immunopositive antigen became more visible at the veliger stage (51 hpf) because the larval stomach was well-formed by that time.
Daily settlement rates of the zebra mussel, Dreissena polymorpha, on an artificial substrate correlate with veliger abundance.
Maximum veliger densities in these four reservoirs were less than those found in other studies (Horvath and Lamberti, 1999b; Severson, 2007), possibly indicating that the four reservoirs we studied had not reached peak veliger densities or that other factors such as temperature regime, food supply quantity or quality, or other conditions were in some way suboptimal for zebra mussels.
About 30-50% unfertilized eggs was abled to fertilized and developed to veliger stage.
Abundance and distribution of queen conch veligers (Strombus gigas Linne) in the central Bahamas: 1.
An experimental protocol was designed to evaluate the cost-effectiveness of various chemical additions for zebra mussel veliger settling inactivation and veliger mortality.
The mother broods egg capsules within her shell; capsules contain nurse eggs together with embryos whose development is arrested at an early veliger stage and embryos that develop to hatch as either pediveligers or juveniles (Strathmann and Strathmann, 2006).