A comparison of the size structure of Parapenaeus longirostris (Lucas, 1846) (Decapoda, Penaeidae) between populations in the Sea of Marmara and in the Aegean Sea

The size structure of the commercially important rose shrimp, Parapenaeus longirostris, was compared between populations in the Sea of Marmara and the Aegean Sea. The analysis was based on data collected during trawl selectivity surveys carried out in November and December 2006. Growth showed no similar pattern, and in additions differences were found in length frequency distribution, sex ratio, and recruitment pattern of the P. longirostris populations in these two areas. © 2008 Brill Academic Publishers.Istanbul Üniversitesi: 562/14082006*? This study was partly supported by the Research Fund of Istanbul University (Project no: 562/14082006). 4? Author for correspondence; e-mail: deval@arcor.de -- The authors thank the Istanbul University and Aydın Kuruca for financial and logistic support, and we also express our deep gratitude to the assistant scientific crews and to the captains and crews of the R/V “Yunus” and the commercial trawler “Hapulog^lu” for their help during the sea trials. -