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[Some biological aspects of Melicertus kerathurus (Forskål, 1775) (Decapoda, Penaeidae) inhabiting İzmir Bay (Aegean Sea), Turkey, Some biological aspects of Melicertus kerathurus (Forskål, 1775) (Decapoda, Penaeidae) inhabiting İzmir Bay (Aegean Sea), Turkey]

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[Some biological aspects of Melicertus kerathurus, a shrimp of high commercial value, were studied in İzmir Bay from April 2004 to December 2004. A seasonal reproduction pattern was observed from April to September with a high percentage of mature females occurring between May and July, when water temperature was relatively high. During the study, a total of 1050 specimens was captured: 612 (58.3%) females and 438 (41.7%) males. The largest female and male were 22.7 cm and 17.0 cm, respectively. The minimum size attained at first maturity was estimated to be 3.9 cm carapace length (CL) and 14.1 cm total length (TL). Sexual differences related to the length-weight relationship were noted. The onset of sexual maturity for females was estimated to be CL50% = 4.6 cm and TL50% = 16.5 cm. Certains aspects biologiques de Melicertus kerathurus, une crevette de forte valeur commerciale ont été étudiés dans la baie d'İzmir d'Avril 2004 à Décembre 2005. Un rythme de reproduction saisonnier a été observé d'Avril à Septembre avec un fort pourcentage de femelles mâtures entre Mai et Juillet, quand la température de l'eau est relativement élevée. Durant l'étude, un total de 1050 spécimens ont été capturés: 612 (58,3%) femelles et 438 (41,7%) mâles. La femelle et le mâle les plus grands mesuraient respectivement 22,7 cm et 17,0 cm. La taille minimum à la maturité a été estimée à 3,9 cm de longueur de carapace (CL) et 14,1 cm de longueur totale (TL). Des différences entre sexe portant sur la relation taille-poids ont été notées. Le début de la maturité sexuelle pour les femelles a été estimé à CL50% = 4,6 cm et TL50% = 16,5 cm., Some biological aspects of Melicertus kerathurus, a shrimp of high commercial value, were studied in İzmir Bay from April 2004 to December 2004. A seasonal reproduction pattern was observed from April to September with a high percentage of mature females occurring between May and July, when water temperature was relatively high. During the study, a total of 1050 specimens was captured: 612 (58.3%) females and 438 (41.7%) males. The largest female and male were 22.7 cm and 17.0 cm, respectively. The minimum size attained at first maturity was estimated to be 3.9 cm carapace length (CL) and 14.1 cm total length (TL). Sexual differences related to the length-weight relationship were noted. The onset of sexual maturity for females was estimated to be CL50% = 4.6 cm and TL50% = 16.5 cm. Certains aspects biologiques de Melicertus kerathurus, une crevette de forte valeur commerciale ont été étudiés dans la baie d'İzmir d'Avril 2004 à Décembre 2005. Un rythme de reproduction saisonnier a été observé d'Avril à Septembre avec un fort pourcentage de femelles mâtures entre Mai et Juillet, quand la température de l'eau est relativement élevée. Durant l'étude, un total de 1050 spécimens ont été capturés: 612 (58,3%) femelles et 438 (41,7%) mâles. La femelle et le mâle les plus grands mesuraient respectivement 22,7 cm et 17,0 cm. La taille minimum à la maturité a été estimée à 3,9 cm de longueur de carapace (CL) et 14,1 cm de longueur totale (TL). Des différences entre sexe portant sur la relation taille-poids ont été notées. Le début de la maturité sexuelle pour les femelles a été estimé à CL50% = 4,6 cm et TL50% = 16,5 cm.]

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/content/journals/10.1163/156854006777584232
2006-05-01
2016-09-26

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