期刊
WILSON JOURNAL OF ORNITHOLOGY
卷 121, 期 4, 页码 730-738出版社
WILSON ORNITHOLOGICAL SOC
DOI: 10.1676/07-126.1
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资金
- U.S. Fish and Wildlife Service
- Maryland Ornithological Society
- Canadian Wildlife Service
- Louisiana Department of Wildlife and Fisheries
- Delta Waterfowl Foundation
- Rockefeller Scholarship program
- U.S. Geological Survey-Louisiana Cooperative Fish and Wildlife Research Unit
- Louisiana State University (LSU) AgCenter
- School of Renewable Natural Resources at LSU
Blackwater National Wildlife Refuge on the Delmarva Peninsula, Maryland, USA has been the wintering area of a small population of Lesser Snow Geese (Chef caerulescens caerulescens; LSGO) since the 1930s. Snow Geese primarily pair in wintering areas and gene flow could be restricted between this and other LSGO wintering populations. Winter pair formation also could facilitate interbreeding with sympatric but morphologically differentiated Greater Snow Geese (C. c. atlantica; GSGO). We sequenced 658 by of the mitochondrial DNA control region for 68 Snow Geese from East Coast and Louisiana wintering populations to examine the level of genetic differentiation among populations and subspecies. We found no evidence for genetic differentiation between LSGO populations but, consistent with morphological differences, LSGO and GSGO were significantly differentiated. We also found a lack of genetic differentiation between different LSGO morphotypes from Louisiana. We examined available banding data and found the breeding range of Delmarva LSGO overlaps extensively with LSGO that winter in Louisiana, and documented movements between wintering populations. Our results suggest the Delmarva population of LSGO is not a unique population unit apart from Mid-Continent Snow Geese. Received 30 August 2007. Accepted 23 September 2008.
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