Reproductive Biology of Pacific Oyster_JJBS.pdf

• Main Authors: Ternala Alexander Barus, Kasmini, Lili, M. Ali Sarong, Miswar Budi Mulya, Agung Setia Batubara
• Format: Text
• Language: unknown
• Published: figshare 2020
• Subjects: 60201 Behavioural Ecology; FOS Biological sciences; Pacific; Crassostrea gigas
• Online Access: https://dx.doi.org/10.6084/m9.figshare.12240911; https://figshare.com/articles/Reproductive_Biology_of_Pacific_Oyster_JJBS_pdf/12240911

The reproductive biology of pacific oysters (Crassostrea gigas) was studied in the coastal area of Banda Aceh City, Aceh Province, Indonesia. This study was conducted over six months from July to December, 2017. The samples were collected following the seasons. July to August represented the dry season, while September to October represented the transition season, and November to December had been within the rainy season. Surveys and observations were conducted at two locations, Tibang and Ulee Lheue, where samples were collected with a minimum of 150 samples per location per month. Data collection is done by the line transect method. The results of the analysis showed that the male oyster gonad first matured at a total length of 26.40 mm in Tibang and at the total length of 25.45 mm in Ulee Lheue. Furthermore, the female oyster gonad first matured at 20.46 mm of total length in Tibang and at a total length of 25.24 mm in Ulee Lheue. The range of oyster fecundity in Tibang is between 7,487,888-34,511,625 eggs/ind with an average fecundity reaching 17,360,821 eggs/ind, whereas the range of oyster fecundity in Ulee Lheue was between 9,237,258-40,575,863 eggs/ind with an average fecundity reaching 17,108,206 eggs/ind. The total number of the collected oyster samples was 1800 specimen, and all the samples were in the adult category. In addition to sex determination of the oysters into males and females, the oyster hermaphrodite sex is also found. The results of gonadal observation show that oysters are hermaphrodite synchronous (male and female gonads mature at the same time).