Naslov
Reproductive cycle of Glycymeris nummaria (Linnaeus, 1758) (Mollusca: Bivalvia) from Mali Ston Bay, Adriatic Sea, Croatia

Autori
Crnčević, Marija ; Peharda, Melita ; Ezgeta-Balić, Daria ; Pećarević, Marijana

Izvornik
Scientia marina (0214-8358) 77 (2013), 2; 293-300

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
reproduction; Bivalvia; Glycymeris nummaria; Adriatic

Sažetak
The reproductive cycle of the dog cockle, Glycymeris nummaria (Glycymerididae), was studied using specimens collected monthly from Mali Ston Bay, south eastern Adriatic Sea over the period from January to December 2010. We analysed sex ratios, gonad developmental stages, and oocyte diameters using standard histological techniques. There were no differences in the overall sex ratio and no difference in shell length with respect to sex. Results of a size frequency analysis of oocyte diameters agreed with a qualitative analysis of gonadal developmental stages, confirming the occurrence of one annual spawning peak - from May to July. A significant correlation was identified between mean gonad indices of males and females and condition index. This study provides the first data on the reproductive characteristics of G. nummaria, necessary for the future sustainable management of its potential fishery.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Biotehnologija

POVEZANOST RADA