Archives of Polish Fisheries

Vol. 22 Fasc. 3

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Arch. Pol. Fish.                    Vol. 22 Fasc. 3                  2014         p. 229-233

DOI 10.2478/aopf-2014-0023


SHORT COMMUNICATION

Morphometric differentiation in four populations of signal crayfish, Pacifastacus leniusculus (Dana), in Poland

Łucjan Chybowski

ABSTRACT. The subject of the study was four populations of signal crayfish from Naryjska Struga River and lakes Pobłędzie, Mauda, and Staw Płociczno. The morphometric differentiation of female and male signal crayfish was studied with discriminant analysis. It was confirmed that both females and males from the Naryjska Struga River differ from the crayfish from the three lakes. The characters that best discriminated females were those associated with the cephalothorax and cheliped width, while in males they were those associated with the chelipeds and the abdomen.

Keywords: signal crayfish, morphological characters, discriminant analysis, alien species

CORRESPONDING AUTHOR:

Ł. Chybowski [+]
Inland Fisheries Institute in Olsztyn, Poland
Department of Lake Fisheries in Giżycko
ul. Rajska 2, 11-500 Giżycko, e-mail: lchybowski@infish.com.pl