two oyster shells - top one showing inside and bottom showing outside of the shell

Purpose & Goals

Invitation

Agenda

Charge To Workgroups

Specific Questions For Workgroups

Contacts

Workshop Abstracts

Workshop Summary

Oysters & the
Chesapeake

 
Oyster Research and Restoration in U.S. Coastal Waters: Strategies for the Future
September 8-9, 2003 - Annapolis, Maryland

Abstracts
Workgroup: Genetics and Oyster Populations

Physiological and Genetic Correlates of Dermo Disease Resistance in the Eastern Oyster: An Interdisciplinary Approach

Principal Investigator(s):
Patrick M. Gaffney, University of Delaware, pgaffney@udel.edu

Co-Investigator(s):
S. Kaattari, M. Faisal, Virginia Institute of Marine Science

Funding Period: 1997-1998

Ten families of oysters containing high within- and among-family genetic variability were assessed for protease inhibitory (PI) activity against proteases of Perkinsus marinus, the pathogen causing Dermo disease. Interrelationships among family survival under field challenge, disease intensity and PI activity were examined. Families with the highest field survival had the lowest body burden of parasite cells, and the highest average PI activity. These results demonstrate the association of increased PI activity with increased disease resistance and higher field survival, and demonstrate that selectable genetic variation for these traits exists in hatchery stocks of eastern oysters.

IMPACTS and/or BENEFITS: These results confirm the feasibility of a selective breeding program for enhancing Dermo resistance, and underscore the importance of broodstock selection in such a program. In addition, they demonstrate the utility of PI activity as a measurable correlate of disease resistance, which can be used in future studies to map the responsible gene(s), and use them or closely linked markers in programs of marker-assisted selection or introgression.

PROJECT PUBLICATIONS:

Faisal, M., S. Kaattari, and P. M. Gaffney. 1998. Physiological and genetic correlates of Dermo disease resistance in the eastern oyster. Journal of Shellfish Research 17:1301.

Oliver, J. L., P. M. Gaffney, J. S K Allen, M. Faisal, and S. L. Kaattari. 2000. Protease inhibitory activity in selectively bred families of eastern oysters. Journal of Aquatic Animal Health 12:136-145.

UM-SG-TS-2003-01 www.mdsg.umd.edu
   
This publication was supported by funds from
the NOAA National Sea Grant College Program and the
Maryland and Virginia Sea Grant College Programs
[Maryland Sea Grant]
 [NOAA]
 [Virginia Sea Grant]

Workshop Abstracts
Meeting Home

Sponsored by NOAA Sea Grant and
the Maryland and Virginia Sea Grant Programs

Last modified October 10, 2012

http://www.mdsg.umd.edu/issues/chesapeake/oysters/research/meeting/abstracts/abstract25.html

Accessibility Statement