Mytilus galloprovincialis: Reproductive Cycle of Fields Mussels Close to a Lagoon (North Atlantic, Moulay Bousselham, Morocco)

SOME REPRODUCTIVE PATTERNS OF CULTURED MEDITERRANEAN MUSSEL (Mytilus galloprovincialis Lamarck, 1819) IN BOKA KOTORSKA BAY, ADRIATIC SEA

“…Obtained data showed that M. galloprovincialis is a dioecious species with a sex ratio 1:1. Similar sex ratio was reported by other authors for M. galloprovincialis (Da Ros et al, 1985;Suárez et al, 2005;Bhaby et al, 2014;Bhaby, 2015;Azpeitia et al, 2017), as well as for M. edulis (Sunila 1981;Toro et al, 2002). Contrary to those authors, Chelyadina et al (2018) in M. galloprovincialis populations from Black Sea found more males during all investigated period (M:F=2.8:1).…”

“…It was calculated by multiplying the number of individuals from each developmental stage (ni) by the numerical ranking of that stage (Si), and dividing the result by the total number of individuals (N) (e.g. Seed, 1975;Gosling, 2003;Benomar et al, 2006;Bhaby, 2015).…”

“…Besides, Hrs-Brenko (1971; and Dardignac-Corbel (1990) reported prolonged spawning in populations across Mediterranean Sea including Adriatic Sea, as well as Stjepčević (1974) in populations from Boka Kotorska Bay and Azpeitia et al (2017) in populations from Bay of Biscay. Kunduz and Erkan (2008) in populations from Sea of Marmara as well as Bhaby (2015) in populations from Marocco reported spawning during almost all year including summer. Prolonged spawning period of cultured bivalves is of great advantageous for farmers as brood stock may be available over a longer period of the year (Popović et al, 2013).…”

“…Reproductive pattern of cultured bivalves are of great significance for farmers, therefore, it is not surprising that research on the reproductive cycle is mostly related to economically important bivalve species (e.g. Da Ros et al, 1985;Peharda et al, 2006;Crnčević et al, 2013;Popović et al, 2013;Matias et al, 2013;Bhaby et al, 2014;Bhaby, 2015;Ćurković, 2017;Egzeta-Balić et al, 2020;Puljas and Lukić, 2021).…”

Synchronous Reproduction in Mussel (Mytilus Galloprovincialis) Population from Atlantic Ocean of Morocco

“…Until 2000, there was only one scientific publication about the general reproductive biology of the M. galloprovincialis, discussing the multiple peaks of gonad maturation [3]. After 2000's, there were two papers of reproductive biology of M. galloprovincialis in coastal water of Mediterranean Sea and the Atlantic coast of southern Morocco with detail investigation with histological analyses [4,5]. There are still many observed habitats and aggregations of M. galloprovincialis along Moroccan coast, and those few investigations are not sufficient to understand the natural populations and to monitor their status.…”