Variations in zebra mussel (Dreissena polymorpha) veliger densities throughout 1996 at Dam 52 on the lower Ohio River

Journal of Freshwater Ecology
By: , and 

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Abstract

Zebra mussel veliger densities were monitored throughout 1996 at Lock and Dam 52 on the lower Ohio River near Brookport, IL. The spawning season occurred between mid June and early September with veliger densities peaking at 30,000/m3 in late June. Veliger first appeared at a water temperature of 21° C. When spawning ended in September the water temperature was 22 °C. Veligers were found throughout November when the water temperature was 10 °C. The lowest temperature at which veligers were observed was 7 ° C in March 1996. These results show that the zebra mussels in the lower Ohio River are reproducing naturally and that spawning appears to be synchronous. The presence of larvae at low temperatures in March suggests that veligers are capable of delaying settlement and overwintering in the planktonic stage.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Variations in zebra mussel (Dreissena polymorpha) veliger densities throughout 1996 at Dam 52 on the lower Ohio River
Series title Journal of Freshwater Ecology
DOI 10.1080/02705060.1998.9663617
Volume 13
Issue 3
Year Published 1998
Language English
Publisher Taylor & Francis
Contributing office(s) Southeast Ecological Science Center
Description 7 p.
First page 255
Last page 261
Online Only (Y/N) N
Additional Online Files (Y/N) N