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Reproductive cycle of the oyster Crassostrea(Magallana)saidii(Wong and Sigwart,2021)from Southeast Asia

Aquaculture and Fisheries 2024年第4期9卷 653-662页

作者： arun chandra barman Nur Leena W.S.Wong Murni Marlina Abd Karim Department of Aquaculture Faculty of AgricultureUniversiti Putra MalaysiaSerdangSelangor43400Malaysia Bangladesh Fisheries Research Institute(BFRI) Mymensingh2201Bangladesh International Institute of Aquaculture and Aquatic Sciences(I-AQUAS) Universiti Putra MalaysiaSerdangSelangor43400Malaysia

Crassostrea(Magallana)saidii has been commercially ranched in Malaysia and consumed for more than 160 years,but it was only recently identified as a new species to *** study was conducted to evaluate the reproductive phenology of C.(M.)*** of 30 individual oysters were taken monthly for 15 months from the sole population at Sungai Muar estuary in Johor,*** sex ratio was 1:1.64(male:female)for all examined specimens,with female numbers significantly *** was detected in 1.56%of all *** peaks in April(2019)and November(2018 and 2019),and were positively associated with the increased rainfall *** occurred throughout the research period with temporal *** highest values of maturity index(MI)were recorded in March,August and October 2019,when most oysters were in matured and maturing *** index(CI)ranged from 31.90±1.25(April 2019)to 70.03±3.23(October 2019),exhibiting two peaks(March and October 2019)and subsequently reduced in CI indicating spawning consistency with histological *** stressors such as heavy sedimentation and inland development are threatening the survival of this *** understanding of their reproductive biology is essential to ensure the survival and sustainability of C.(M.)saidii fishery.

关键词： Crassostrea(M.)saidii Gonad phenology Sex ratio Maturity index Condition index Oyster

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