Seasonal variation of reproductive traits of the caramote prawn in the Gulf of Tunis

The caramote prawn, Melicertus kerathurus, is a Penaeidae species inhabiting the Mediterranean Sea and the Est Atlantic Ocean. Caramote prawn represents a commercially important species in terms of both aquaculture and fishing; however, there is poor information on its reproductive biology in Medite...

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Veröffentlicht in:Aquatic living resources (Montrouge) 2015-04, Vol.28 (2-4), p.89-98
Hauptverfasser: Jaziri, Hela, Ferreri, Rosalia, Khoufi, Widien, El Fehri, Safouene, Ben Meriem, Sadok, Pulizzi, Maurizio, Mangano, Salvatore, Bonanno, Angelo, Mazzola, Salvatore, Basilone, Gualtiero
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container_end_page 98
container_issue 2-4
container_start_page 89
container_title Aquatic living resources (Montrouge)
container_volume 28
creator Jaziri, Hela
Ferreri, Rosalia
Khoufi, Widien
El Fehri, Safouene
Ben Meriem, Sadok
Pulizzi, Maurizio
Mangano, Salvatore
Bonanno, Angelo
Mazzola, Salvatore
Basilone, Gualtiero
description The caramote prawn, Melicertus kerathurus, is a Penaeidae species inhabiting the Mediterranean Sea and the Est Atlantic Ocean. Caramote prawn represents a commercially important species in terms of both aquaculture and fishing; however, there is poor information on its reproductive biology in Mediterranean and, particularly, in Tunisian waters. To fulfil such a gap, monthly samples of caramote prawn were collected along the northern Tunisian coast throughout one year. Ovaries maturity data, obtained by histological analysis, together with reproductive and condition indices, indicated the main spawning season extends from April to August, with a clear peak in July–August. However, gonadic production still persists during September-December, although at lower levels. The seasonal patterns of somatic and gonadic conditions suggested that energy reserves, during the main spawning period, were invested both in gonadic and body production; but males and females appeared to devote differently such energy reserves. During the spawning peak, females revealed both good somatic and gonadic conditions simultaneously, while males displayed worse body conditions. Monthly sea surface temperature (SST) showed a high level of pattern correspondence with ovary maturity phase and gonadosomatic index (GSI); but a strong linear relationship between SST and GSI in the study area was observed only for males. Such results increased reproductive biology knowledge, therefore allowing to improve the management quality of both wild caramote prawn stocks and reared populations.
doi_str_mv 10.1051/alr/2016001
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source EDP Open; EZB Electronic Journals Library
subjects histological analysis
length at first maturity
Marine
Melicertus kerathurus
sexual maturity
spawning season
title Seasonal variation of reproductive traits of the caramote prawn in the Gulf of Tunis
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