Mitochondrial DNA variation in Atlantic salmon,Salmo, salarL., populations
作者:
D. P. F. King,
S. J. Hovey,
D. Thompson,
A. Scott,
期刊:
Journal of Fish Biology
(WILEY Available online 1993)
卷期:
Volume 42,
issue 1
页码: 25-33
ISSN:0022-1112
年代: 1993
DOI:10.1111/j.1095-8649.1993.tb00303.x
出版商: Blackwell Publishing Ltd
关键词: mtDNA;Atlantic salmon;population structure
数据来源: WILEY
摘要:
Mitochondrial DNA (mtDNA) variation was examined in 209 Atlantic salmon from two river systems, the R. Itchen in Hampshire (Southern England) and the R. Conwy (North Wales). Within each system, five spawning sites were sampled. Four enzymes (AVA II, HAE III, HINF I and MBO I) revealed restriction fragment polymorphisms that were informative. Ten clonal lines were observed. These clones were differentially distributed between the two river systems and single clonal types were found to predominate at several spawning sites. MBO I variants were found in salmon from the R. Itchen but not the R. Conwy. A significant heterogeneity in frequency distribution of clonal lines between parr and smolt assemblages of the same year class within the R. Itchen was detected. This heterogeneity suggests that differences in survival or migratory behaviour may be identified by changes in mtDNA clonal frequencies.
点击下载:
PDF
(304KB)
返 回