Le cycle sexuel de Tapes decussatus, Linnaeus 1758 (Bivalve / Veneridae) dans le canal de Tunis.
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Author
Zammouri Langar, NadraDate
1991
Metadata
Show full item recordAlternative Title
Sexual cycle of Tapes decussatus, Linnaeus 1758 (Bivalve/Veneridae) in the Tunis canalAbstract
Un echantillonage bimensuel realise depuis avril 1988 a decembre 1989 a permis de suivre l'evolution du cycle gametogenetique du bivalve Tapes decussatus, vivant dans le canal central du lac de Tunis. Le cycle ponderal et une echelle de maturite ont permis de situer les periodes d'emission des gametes. Une ponte principale se deroule de juin a aout-septembre et deux pontes secondaires ont lieu, la premiere au mois de mai et la seconde a la fin de l'automne debut hiver. La taille de la coquille de T.decussatus a la premiere maturite sexuelle a ete etudiee. Elle est de 30mm de longueur antero-posterieure.During April 1988 to December 1989 a twice a month sampling was carried out in the aim to study the sexual cycle of Tapes decussatus (Bivalvia) in Tunis canal. The ponderal cycle and a practical maturity scale were identified the periods of gamete emission. Principal spawning is begining of June to August-September and two secondary spawning arising, the first is in May and the second is in autumn first spring. The length of shell of T.decussatus at first sexual maturity was determined. She was 30 mm of antero-posterior length.
Journal
Bulletin de l'Institut National Scientifique et Technique d'Océanographie et de Pêche de SalammboVolume
18Page Range
pp. 5-22Collections