Fait partie de [OMC60]

2003 - 224 p.
p. 201-203  

Ovarian cycle of the Mediterranean bluefin tuna (Thunnus thynnus L.)

Zubani D., Corriero A., De Metrio G., Desantis S., Acone F., Serna M. de la, Eicker J., Bridges C.R., Megalofonou P.

The results obtained by the histological analysis of Mediterranean bluefin tuna ovaries collected over a six-month period (March-August) are reported. Five phases of ovarian cycle were characterised: recrudescence (March-early May); ripening (middle May); pre-spawning (late May-June); spawning (late June-early July); and spent (late July-August). The ovaries of five specimens caught during the spawning period in the North Ionian Sea and South Adriatic Sea displayed extensive vitellogenic atresia. In females which find themselves in unfavourable environmental condition during the spawning period, follicular atresia could represent a way to re-absorb highly energetic yolk reserve.

Mots-clés    

MER MEDITERRANEE, OVAIRE, REPRODUCTION, THUNNUS

Citer cet article    

Zubani D., Corriero A., De Metrio G., Desantis S., Acone F., Serna M. de la, Eicker J., Bridges C.R., Megalofonou P. Ovarian cycle of the Mediterranean bluefin tuna (Thunnus thynnus L.). In : Bridges C.R. (ed.), García A. (ed.), Gordin H. (ed.). Domestication of the bluefin tuna Thunnus thynnus thynnus. Zaragoza : CIHEAM, 2003. p. 201-203. (Cahiers Options Méditerranéennes; n. 60). 1. International Symposium on Domestication of the Bluefin Tuna Thunnus Thynnus Thynnus, 2002/02/03-08, Cartagena (Spain). http://om.ciheam.org/om/pdf/c60/03600126.pdf