Morphological Variability and Sexual Dimorphism of Danube Crayfish Pontastacus leptodactylus Eschscholtz, 1823 from the Vrbas River

Authors

  • Rajko Roljić University of Banja Luka, Genetic Resources Institute, Bulevar Vojvode Petra Bojovića 1А, Banja Luka, Republic of Srpska
  • Vera Nikolić University of Belgrade, Faculty of Biology, Studentski trg 16, Beograd
  • Nebojša Savić University of Banja Luka, Faculty of Agriculture, Bulevar Vojvode Petra Bojovića 1А, Banja Luka, Republic of Srpska

Keywords:

Danube crayfish, morphometric characteristics, sexual dimorphism, Vrbas River

Abstract

The paper presents data on morphological variability and sexual dimorphism of Danube crayfish (Pontastacus leptodactylus) from the Vrbas River in Srbac. Crayfish were captured with hand made traps from October 2018 to May 2019. A total of 35 crayfish were caught, of which 22 males and 13 females. The dimensions of eight morphometric characteristics: body weight (W), body length (TBL), claw length (CLL), cephalothorax length (CEF), carapace width (CPW), abdomen length (ABL), rostrum length (ROL) and rostrum width (ROW) were analyzed, both in males and females. Also, for all caught specimens condition factor was determined. The results of the morphometric character measurements fit into the range of variation and represent the first data for the investigated area. By using t-test, it was noted that there are significant differences between the sexes for W, TBL, CLL, CEF, ABL and ROL, which is explained by the pronounced sexual dimorphism of Danube   crayfish.

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Published

2019-06-01

How to Cite

Roljić, R., Nikolić, V., & Savić, N. (2019). Morphological Variability and Sexual Dimorphism of Danube Crayfish Pontastacus leptodactylus Eschscholtz, 1823 from the Vrbas River. Water Research and Management, 9(2), 27–32. Retrieved from http://wrmjournal.com/index.php/wrm/article/view/265

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