Bank voles in linear habitats show restricted gene flow as revealed by mitochondrial DNA (mtDNA)

被引:47
作者
Aars, J
Ims, RA
Liu, HP
Mulvey, M
Smith, MH
机构
[1] Univ Oslo, Inst Biol, N-0316 Oslo, Norway
[2] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA
关键词
bank vole; gene flow; landscape ecology; linear habitats; movement; mtDNA;
D O I
10.1046/j.1365-294x.1998.00487.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Genetic structure of bank vole populations in linear river bank habitat in southeast Norway was determined from analyses of DNA sequences for the mitochondrial D-loop. Animals were sampled at sites separated by 1 km, along two forested river banks separated by approximate to 100 m of open water. Twenty-six distinct haplotypes were found among 120 voles. The voles showed significant deviation from panmixis on both sides of the river. Animals from the same site or from sites 1 km apart were more likely to share haplotypes than animals 2 km apart or more. Common haplotypes were widespread on both river banks, and had a wider distribution than relatively rare haplotypes. Some rare haplotypes were found on both banks, but most were restricted to a single bank. The results suggest that short-term gene flow may be restricted for female bank voles in linear habitats. Female territorial behaviour may vary with habitat geometry. In the linear habitat described here, females defend only two territorial borders and may effectively limit female dispersal. Results were compared to a previous study of bank voles from this region in a two-dimensional habitat. Gene flow in the linear habitat was much more restricted than gene flow in the two-dimensional habitat. Probable mechanisms underlying this difference are discussed.
引用
收藏
页码:1383 / 1389
页数:7
相关论文
共 34 条
[1]  
AARS J, 1998, IN PRESS ECOLOGY
[2]   Discontinuous habitat corridors: Effects on male root vole movements [J].
Andreassen, HP ;
Ims, RA ;
Steinset, O .
JOURNAL OF APPLIED ECOLOGY, 1996, 33 (03) :555-560
[3]   Optimal width of movement corridors for root voles: Not too narrow and not too wide [J].
Andreassen, HP ;
Halle, S ;
Ims, RA .
JOURNAL OF APPLIED ECOLOGY, 1996, 33 (01) :63-70
[4]  
Andreassen HP, 1998, ECOLOGY, V79, P1223, DOI 10.1890/0012-9658(1998)079[1223:SURTHF]2.0.CO
[5]  
2
[6]  
[Anonymous], 1993, BIOL LEMMINGS
[7]   HABITAT CORRIDORS AND THE CONSERVATION OF SMALL MAMMALS IN A FRAGMENTED FOREST ENVIRONMENT [J].
BENNETT, AF .
LANDSCAPE ECOLOGY, 1990, 4 (2-3) :109-122
[8]  
BONDRUPNIELSEN S, 1985, ANN ZOOL FENN, V22, P385
[9]   THE ADAPTIVE PROFILE - COMPARATIVE PSYCHOLOGY OF RED-BACKED VOLES (CLETHRIONOMYS-GAPPERI) [J].
DEWSBURY, DA ;
BAUMGARDNER, DJ ;
SAWREY, DK ;
WEBSTER, DG .
JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY, 1982, 96 (04) :649-660
[10]   Spatial organization in a small population of the root vole Microtus oeconomus in a linear habitat [J].
Fauske, J ;
Andreassen, HP ;
Ims, RA .
ACTA THERIOLOGICA, 1997, 42 (01) :79-90