Some aspects of population biology of the mud crab, Rhithropanopeus harrisii (Gould, 1841) in the Odra estuary, Poland

• Autorzy: Czerniejewski P.
• Języki publikacji: EN

Abstrakty

EN

The mud crab is the only non-indigenous xanthid encountered in the River Odra estuary. In 2007-2008, the crabs were collected, using fish traps, to determine sex and to follow variations in individual weight and carapace length and width over a year. Sex-dependent differences in the crab morphometry were studied as well. The largest catch was that obtained in September (23.48% of the total number of 264 individuals) and October (31.82%). Male crabs accounted for 56.44% of the total number; males dominated in autumn (September-December) and spring (March, May, June) catches. Males showed significantly wider carapaces (16.81 š3.98 mm; range: 5.60-22.90 mm) and mean individual weight (2.15 š0.94 g; range: 0.15-3.93 g) than females (mean carapace width of 15.05 š3.33 mm; range: 5.30-19.80 mm, and mean individual weight of 1.47 š0.60 g; range: 0.13-2.56 g). Of the 11 morphometric characters analyzed, expressed in relative values (%), related to the carapace width, males showed significantly larger claw dimensions (CHL1, CHW1, CHH1, CHL2, CHW2, CHH2) and smaller abdomen widths (AW).

Słowa kluczowe

EN

Rhithropanopeus harrisii; morphometry; condition; Odra River estuary; body weight

• Wydawca: Institute of Oceanography University of Gdańsk
• Czasopismo: Oceanological and Hydrobiological Studies
• Rocznik: 2009
• Tom: Vol. 38, No.4
• Strony: 49--62
• Opis fizyczny: bibliogr. 27 poz., tab., wykr.

Twórcy

autor

Czerniejewski P.

• Department of Fisheries Management in Open Waters West Pomeranian University of Technology ul. Królewicza 4, 71-550 Szczecin,

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