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Turkish Journal of Fisheries and Aquatic Sciences 2013, Vol 13, Num, 4     (Pages: 647-656)

Contribution to the Biology of Parapenaeus longirostris (Lucas, 1846) in the South Ionian and South Adriatic Sea

Kostas Kapiris 1 ,Olivera Markovic 2 ,Dimitris Klaoudatos 1 ,Mirko Djurovic 2

1 Hellenic Centre for Marine Research, Institute of Marine Biological Resources, 47th km Athens-Sounio, Mavro Lithari P.O. Box 712, 19013, Anavissos, Attica, Greece
2 Institute of Marine Biology, Dobrota P.O.Box 69, 85330 Kotor, Montenegro
DOI : 10.4194/1303-2712-v13_4_10 Viewed : 4257 - Downloaded : 4396 Experimental trawl sampling was carried out along the South Ionian and South Adriatic Seas between 2006 and 2008 in depths from 71 to 586 m. This study investigates the available information on biology of P. longirostris in both areas. The length frequency distribution of the Greek specimens ranged between 7.08-38 mm CL (2-3 size groups), while between 14-37 mm CL (1-2 size groups) in the Montenegrin samples and was not significantly dependent on depth in both areas. The values of the slope (b) of the CL-W relationships in both countries were similar to those found in other Mediterranean areas and were higher in the Greek samples. The spawning period takes part in the sampling period in both areas. The smallest mature female in the Ionian Sea was 10 mm CL and 16 mm CL in South Adriatic Sea. Sex ratio was significantly higher than 1:1 in favor of males in the South Ionian Sea, while females statistically outnumbered males in the Montenegrin samples. The observed biological differences between in the two study areas could be attributed to the different sampling depth and the exploitation the ratio. Keywords : Deep water rose shrimp, biology, Ionian Sea, Adriatic Sea