Establishment of Chydorus sphaericus (O.F. Muller, 1785) (Crustacea: Cladocera) in Australia: consequences of mass fish stocking from Northern Europe?

  • Pranay Sharma | pranay.sharma@adelaide.edu.au The University of Adelaide, Australia.
  • Alexey A. Kotov A. N. Severtsov Institute of Ecology and Evolution, Russian Federation.

Abstract

There are 11 species of genus Chydorus Leach, 1816 (Cladocera: Chydoridae) in Australia, including populations of Chydorus sphaericus (O.F. Müller, 1785) morphologically undistinguishable from European ones. Our genetic study of C. sphaericus from two large artificial water bodies in the Adelaide region of South Australia led us to conclude the taxon was introduced to Australia from Europe by human activity, at least in the two studied water bodies. To provide a comprehensive sister-taxa coverage and survey of intraspecific variation, our data were complemented by sequences on Chydorus sphaericus-group from GenBank and Barcode of Life Data Systems website. We speculate that it was related to a mass stocking of introduced species of fishes from Europe. To confirm whether C. sphaericus is an invasive species due to human-mediated introductions, or whether it is a native Australian taxon, further extensive molecular studies (involving nuclear genes) and detailed morphological comparisons are needed. This is a first report on the invasion of a non-daphniid species of Cladocera to Australia. Its significance for Australian ecosystems needs special future studies.

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Published
2014-09-12
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Section
Original Articles
Supporting Agencies
Sir Mark Mitchell Research Foundation, ANZ Holsworth Grant, ABRS Travel Bursary and Russian Foundation for Basic Research (grant 12-04-00207-а)
Keywords:
C. sphaericus, Australia, Northern Europe, South Australia.
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How to Cite
1.
Sharma P, Kotov AA. Establishment of Chydorus sphaericus (O.F. Muller, 1785) (Crustacea: Cladocera) in Australia: consequences of mass fish stocking from Northern Europe?. J Limnol [Internet]. 2014Sep.12 [cited 2021May7];74(2). Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2014.1037