Comparison of Gametogenic Cycles of the Endemic European Carpet Shell Clam (Ruditapes decussatus) and the Introduced Manila Clam (Ruditapes philippinarum) from a Temperate Coastal Mediterranean Lagoon in the Dardanelles, Turkey

Autor:	Pinar Genez, Mehmet Rıza Gezen, Umur Önal
Rok vydání:	2015
Předmět:	Mediterranean climate biology media_common.quotation_subject Introduced species Ruditapes Aquatic animal Aquatic Science Seasonality biology.organism_classification medicine.disease Fishery Temperate climate medicine Reproduction Shellfish media_common
Zdroj:	Journal of Shellfish Research. 34:337-345
ISSN:	1943-6319 0730-8000
DOI:	10.2983/035.034.0216
Popis:	In this study, the gametogenic cycle of the newly introducedManila clam Ruditapes philippinarum was described for the first time for Turkish waters and compared with that of the native European grooved carpet shell clam Ruditapes decussatus coexisting in Cardak Lagoon (Canakkale, Turkey) in the Dardanelles. A total of 480 individuals were sampled for each species between January andDecember 2011. Both species exhibited similar distinct seasonal changes in gonad activity and completed their gametogenic cycles. In both species, gonads advanced very fast after winter reaching ripe stage in April and May in theManila clams and carpet shell clams, respectively. In Manila clams, spawning commenced in April and continued until October. In carpet shell clams, spawning started in May, but the main spawning event occurred in June and continued until July with a discontinuation in August and a marginal spawning taking place in September and possibly in October. Gonad index (GI) values were indicated similar...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::52424cbbad4a5ef6376619098eb0f37a https://doi.org/10.2983/035.034.0216 Zobrazit plný text záznamu