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) BY JAKOV DUL ˇ CI ´ C 1,3 ) , PERO TUTMAN 1 ) , SANJA MATI ´ C-SKOKO 1 ) and BRANKO GLAMUZINA 2 ) 1 ) Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovi´ca 63, HR-21000 Split, Croatia 2 ) University of Dubrovnik, Department of Aquaculture, ´ Cira Cari´ca 4, HR-20000 Dubrovnik, Croatia ABSTRACT 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 . 816CW 2 . 281 (r 2 = 0 . 785). The current substantial records, the occurrence of ovigerous females and juveniles
Crustaceana – Brill
Published: Jan 1, 2011
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