TY - JOUR
T1 - Impact of habitat fragmentation on genetic population structure of roach, Rutilus rutilus, in a riparian ecosystem
AU - Hänfling, Bernd
AU - Durka, W.
AU - Brandl, R.
PY - 2004/3/1
Y1 - 2004/3/1
N2 - During the last 200 years, the riparian ecosystem along major rivers has been reduced to a few scattered remnants. Important elements of the riparian ecosystem are water bodies which were originally connected to the main river channel by annual floodings. Due to river regulations many of these remnants are now virtually isolated. In an allozyme analysis using roach, Rutilus rutilus, as a study species we demonstrate that the genetic diversity (number of alleles per locus, expected heterozygosity) of populations living within floodplain water bodies is not severely impoverished compared to the genetic diversity within the main river channel. However, we found slight differences in the allele frequencies of flood plain water bodies and the main river channel. Nevertheless, fish populations in floodplain water bodies may serve as reservoirs of autochthonous genetic material for restoration of fish populations in the main river channel after population extinction due to catastrophic accidents (e.g. industrial pollution).
AB - During the last 200 years, the riparian ecosystem along major rivers has been reduced to a few scattered remnants. Important elements of the riparian ecosystem are water bodies which were originally connected to the main river channel by annual floodings. Due to river regulations many of these remnants are now virtually isolated. In an allozyme analysis using roach, Rutilus rutilus, as a study species we demonstrate that the genetic diversity (number of alleles per locus, expected heterozygosity) of populations living within floodplain water bodies is not severely impoverished compared to the genetic diversity within the main river channel. However, we found slight differences in the allele frequencies of flood plain water bodies and the main river channel. Nevertheless, fish populations in floodplain water bodies may serve as reservoirs of autochthonous genetic material for restoration of fish populations in the main river channel after population extinction due to catastrophic accidents (e.g. industrial pollution).
KW - allele loss
KW - allozyme
KW - conservation genetics
KW - F-statistics
KW - floodplains
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U2 - 10.1023/B:COGE.0000030008.20492.2c
DO - 10.1023/B:COGE.0000030008.20492.2c
M3 - Article
AN - SCOPUS:4043058138
SN - 1566-0621
VL - 5
SP - 247
EP - 257
JO - Conservation Genetics
JF - Conservation Genetics
IS - 2
ER -