The reproductive biology of Diplodus sargus sargus in the Gulf of Tunis (central Mediterranean)

Authors

  • Nejla Mouine Laboratoire de Biologie animale, Faculté des Sciences de Tunis
  • Patrice Francour Gestion de la Biodiversité. Faculté des Sciences. Université de Nice-Sophia Antipolis.
  • Mohamed-Hédi Ktari Laboratoire de Biologie animale, Faculté des Sciences de Tunis
  • Nadia Chakroun-Marzouk Laboratoire de Biologie animale, Faculté des Sciences de Tunis

DOI:

https://doi.org/10.3989/scimar.2007.71n3461

Keywords:

Diplodus sargus, reproduction, hermaphroditism, protandry, length-weight relationship, Tunisia

Abstract


The sexual activity of Diplodus sargus sargus in the Gulf of Tunis takes place from January to May. Spawning occurs in spring (March to May), as the water temperature rises from 15 to 18°C, just after the winter minimum. The spawning period increases as the latitude decreases. The overall male to female ratio was statistically different from unity. Size at sexual maturity (TL50) was 21 cm (4 years old). The length-weight relationship for all individuals was described by the following parameters: a = 0.015 and b = 3.051. D. s. sargus from the Gulf of Tunis is a rudimentary hermaphrodite with partial protandry.

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Published

2007-09-30

How to Cite

1.
Mouine N, Francour P, Ktari M-H, Chakroun-Marzouk N. The reproductive biology of Diplodus sargus sargus in the Gulf of Tunis (central Mediterranean). Sci. mar. [Internet]. 2007Sep.30 [cited 2024Mar.29];71(3):461-9. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/51

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