Low Mitochondrial DNA Variation in Double-crested Cormorants in Eastern North America

Authors

Juliann L. Waits, University of Louisiana, Lafayette, LA
Michael L. Avery, USDA-National Wildlife Research CenterFollow
Mark E. Tobin, USDA-National Wildlife Research Center
Paul L. Leberg, University of Louisiana, Lafayette, LA

Date of this Version

February 2003

Comments

Published in Waterbirds 26(2): 196-200, 2003.

Abstract

Double-crested Cormorant (Phalacrocorax auritus) numbers are increasing throughout eastern North America. We compared variation for five portions of mtDNA to determine if genetic differences existed among portions of the breeding range that would need to be considered when formulating management programs. Sequences for four mtDNA regions were identical across sample locations; frequencies of two haplotypes of the mitochondrial Control Region were similar across sampling locations. There is no evidence of restricted gene flow among breeding areas, or between subspecies with different migratory patterns.