Naslov
Six years from first record to population establishment : the case of the blue crab, Callinectes sapidus Rathbun, 1896 (Brachyura, Portunidae) in the Neretva River delta (South-eastern Adriatic Sea, Croatia)
(Six years from first record to population establishmen t: the case of the blue crab, Callinectes sapidus Rathbun, 1896 (Brachyura, Portunidae) in the Neretva River delta (South-eastern Adriatic Sea, Croatia))

Autori
Dulčić, Jakov ; Tutman, Pero ; Matić-Skoko, Sanja ; Glamuzina, Branko

Izvornik
Crustaceana (Leiden) (0011-216X) 84 (2011), 10; 1211-1220

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Callinectes sapidus; Neretva River delta; population establishment

Sažetak
The data presented in this paper are based on the observation of 52 individuals of Callinectes sapidus Rathbun, 1896, collected in August and September 2010 by local fishermen using gillnets and traps in the area of the delta of the river Neretva (Croatian coast, south-eastern Adriatic Sea). Carapace width (CW) and carapace length (CL) frequency distributions indicate 3 age cohorts (modes) (CL: 7.2 cm, 8.4 cm, 9.0 cm ; CW: 12.2 cm, 14.9 cm, 16.7 cm). The carapace width (CW) - to - weight (W) relationship was calculated (for both sexes) as W = 0.816 CW2.281 (r2 = 0.785). The current substantial records, the occurrence of ovigerous females and juveniles (observations of fishermen by visual census), as well as the fact that the species was regularly caught in the estuarine area, together constitute evidence of an established population of this species in the investigated area. Further, continuous monitoring of this population and of the potential dispersal of this species in adjacent areas, would be of interest to provide richer information on population structure and dynamics of the blue crab in Adriatic waters.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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