Science Serving Maryland's Coasts

R/ZM-02

Temperature/salinity tolerance and salt regulation in the larvae of Dreissena polymorpha

Principal Investigator: 

David A. Wright

Start/End Year: 

1993 to 1995

Institution: 

Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science

Co-Principal investigator: 

Victor S. Kennedy, Horn Point Laboratory, University of Maryland Center for Environmental Science

Topic(s): 

Description: 

We will investigate temperature/salinity tolerance for larvae of the freshwater bivalve mollusc Dreissena polymorpha using a temperature/salinity matrix which encompasses the northern Chesapeake Bay during the spawning season. Results of survival and growth observations will be entered in a stepwise multiple regression equation which will be used to generate predictive response surfaces relating growth and survival to salinity/temperature combinations. Investigations will also be made into the contributions made by individual electrolytes to salinity stress in Dreissena larvae. A comprehensive study will also be made of the sodium regulatory mechanism in Dreissena larvae.