Capture of particles by direct interception by cilia during feeding of a gastropod 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
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
Vertical migration and distribution of queen conch veligers
, a progress report.
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
was offered to the veliger
larvae after hatching to observe veliger
growth and settlement (see Fig.
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).