Crustacean species new to Spitsbergen with notes on the polymorphism and the subfossil preservation of Cytherissa lacustris (G. O. Sars) |
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| Authors: | TADEUSZ SYWULA TADEUSZ NAMIOTKO JERZY SELL RZEJ WITKOWSKI MAREK ZAJACZKOWSKI |
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| Institution: | T. Sywula, Marine Biology Centre, Polish Academy of Sciences, 81-347 Gdynia, &Wojciecha S, Poland;T. Namiotko and J. Sell, Department of Genetics, University of Gdansk, 80-822 Gdansk, Kladki24, Poland;A. Witkowski, Institute of Oceanography, University of Gdansk, 81-378 Gdynia, Pilsudskiego 46, Poland;M. Zajaczkowski, Institute of Oceanology, Polish Academy of Sciences, 81–967 Sopot, Powslancdw Warszawy 55, Poland. |
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| Abstract: | The copepods Limnocalanus macrurus G. O. Sars and Eucyclops serrulatus (Fisch.) and the ostracode Cytherissa lacustris (G. O. Sars), hitherto unknown on Spitsbergen, were found in Lake Rewatnet, the last species also in Lake Svartvatnet. Samples from parthenogenetic populations of C. lacustris showed a complete lack of electrophoretically detectable variability at four enzyme-encoding loci, two of which are highly variable in mainland populations. However, morphological variation in the carapace length and nodation was no less than in the mainland populations. The carapace valves of C. lacustris do not preserve well in the sediments of Rewatnet. |
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