Fine-scale genetic structuring in endemic galaxiid fish populations of the Taieri River

被引:10
作者
King, TM [1 ]
Wallis, GP [1 ]
机构
[1] Univ Otago, Dept Zool, Dunedin, New Zealand
关键词
Galaxias anomalus; G-depressiceps; brown trout; isozyme electrophoresis; gene flow; population structure;
D O I
10.1080/03014223.1998.9518132
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Many of New Zealand's Galaxias species have declined in abundance this century. Some stream-resident species are now restricted to sections of tributaries above waterfalls >3 m in height that act as barriers to the predatory brown trout (Salmo trutta). It has been suggested that these spatially isolated populations are also genetically isolated and as a result experience restricted gene flow. We used isozyme electrophoresis to test this hypothesis. Comparisons were made between and within tributaries at sites separated by waterfalls. Results from six polymorphic loci showed evidence of genetic heterogeneity among populations of G. anomalus and G. depressiceps from tributaries of the Taieri River system, South Island, New Zealand. In one instance, heterogeneity was found within a single tributary. This demonstrates that gene flow among populations is restricted and that waterfalls are likely to be a significant influence in controlling galaxiid population structure.
引用
收藏
页码:17 / 22
页数:6
相关论文
共 28 条
[1]  
Allendorf F.W., 1986, P57
[2]  
Allibone RM, 1996, BIOL J LINN SOC, V57, P107, DOI 10.1006/bijl.1996.0009
[3]  
[Anonymous], 1981, Statistical Tables
[4]  
Avise JC., 1996, CONSERV GENET
[5]  
BEGON M, 1987, ECOLOGY INDIVIDUALS
[6]   DISTRIBUTION OF NATIVE AND INTRODUCED FISH IN THE 7 CREEKS RIVER SYSTEM, VICTORIA [J].
CADWALLADER, PL .
AUSTRALIAN JOURNAL OF ECOLOGY, 1979, 4 (04) :361-385
[7]  
CADWALLADER PL, 1976, AUST J MAR FRESH RES, V27, P23
[8]   The variant call format and VCFtools [J].
Danecek, Petr ;
Auton, Adam ;
Abecasis, Goncalo ;
Albers, Cornelis A. ;
Banks, Eric ;
DePristo, Mark A. ;
Handsaker, Robert E. ;
Lunter, Gerton ;
Marth, Gabor T. ;
Sherry, Stephen T. ;
McVean, Gilean ;
Durbin, Richard .
BIOINFORMATICS, 2011, 27 (15) :2156-2158
[9]  
Crowl T.A., 1992, Reviews in Fish Biology and Fisheries, V2, P217, DOI 10.1007/BF00045038
[10]   INVESTIGATING ANTIPREDATOR BEHAVIOR IN 3 GENETICALLY DIFFERENTIATED POPULATIONS OF NONMIGRATORY GALAXIID FISHES IN A NEW-ZEALAND RIVER [J].
EDGE, KA ;
TOWNSEND, CR ;
CROWL, TA .
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH, 1993, 27 (03) :357-363