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MEPS 238:307-310 (2002)
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Abstract
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mt-DNA sequences and possible invasion pathways of the Chinese mitten crab
Bernd Hänfling1,*, Gary R. Carvalho2, Roland Brandl1,3
1Umweltforschungszentrum Leipzig-Halle GmbH, Sektion Biozönoseforschung, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
2Molecular Ecology and Fisheries Genetics Laboratory, Department of Biological Sciences, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom
3Department of Animal Ecology, Philipps-University Marburg, Karl-von-Frisch-Str. 1, 35032 Marburg, Germany
*Present address: Molecular Ecology and Fisheries Genetics Laboratory, Department of Biological Sciences, University of Hull, Hull HU6 7RX, United Kingdom. E-mail: b.haenfling@biosci.hull.ac.uk
ABSTRACT: The Chinese mitten crab Eriocheir sinensis is an invasive species that inflicts considerable economical and ecological damage in European and American freshwaters. Sequence variation at the mitochondrial COI gene was investigated
from Chinese, European and American populations in order to infer the invasion history. Firstly, we found a decrease in genetic variability from the source populations to those that have recently been established. Secondly, Central European populations
that are about 100 yr old seem to have originated from multiple invasion events. Thirdly, the sequence data suggest high levels of gene flow across drainages within continents. Fourthly, the 2 American populations sampled in San Francisco Bay were fixed
for a single haplotype. This haplotype was also found in European but not in Chinese populations; this observation provides circumstantial evidence for the unexpected hypothesis that the American populations were founded by a single introduction event
from a European source.
KEY WORDS: Brachyura · Crustacea · Estuary · Molecular marker
Full text in pdf format
Published in MEPS Vol.
238
(2002) on August 8
Print ISSN: 0171-8630; Online ISSN: 1616-1599.
Copyright © Inter-Research, Oldendorf/Luhe, 2002
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