Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh
The current study aimed to describe the annual gametogenic phenology of the oyster Magallana bilineata (Röding, 1798) (=Crassostrea madrasensis), which is found on the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh. Samples were drawn monthly from the intertidal region during low tid...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-04-01
|
| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024047844 |
| _version_ | 1797221777790730240 |
|---|---|
| author | Md. Jasim Uddin Md. Shamsur Rahman Saima Sultana Sonia Sheikh Khadijatul Kubra Md. Sujon Mia Selina Yeasmine |
| author_facet | Md. Jasim Uddin Md. Shamsur Rahman Saima Sultana Sonia Sheikh Khadijatul Kubra Md. Sujon Mia Selina Yeasmine |
| author_sort | Md. Jasim Uddin |
| collection | DOAJ |
| description | The current study aimed to describe the annual gametogenic phenology of the oyster Magallana bilineata (Röding, 1798) (=Crassostrea madrasensis), which is found on the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh. Samples were drawn monthly from the intertidal region during low tide, from which 20 adult individuals were selected at random for biometry and histology. The mean condition index (CI), a ratio of tissue wet weight (g) to shell length (cm), varied from 0.58 ± 0.08 to 1.32 ± 0.36. Histology revealed two spawning cycles in the habitat of M. bilineata over the 12 months of the study. Gametogenesis initiated in December and May, and ripe animals principally occurred from July to September and February to May. In the habitat, M. bilineata exhibited two spawning peak periods: April to June and August to October. The undifferentiated stage as a preparatory step for the next spawning extended from November to February for the first spawning cycle and for a brief period in June for the next spawning cycle. The initiation of spawning in March could be associated with the high-level decline of salinity and increased temperature between February and March, in association with the annual rainfall start, whereas the next spawning cycle could be associated with a gradual increase in salinity. No spawning activity was reported from December to February, when the water temperature remained below 22 °C. Further study could be undertaken on the timing of spatfall of M. bilineata in the habitat to harvest spats for commercial farming of this promising species. |
| first_indexed | 2024-04-24T13:10:50Z |
| format | Article |
| id | doaj.art-9801f2279c6e44f18df4ace31d5f34a3 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-24T13:10:50Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-9801f2279c6e44f18df4ace31d5f34a32024-04-05T04:41:10ZengElsevierHeliyon2405-84402024-04-01107e28753Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, BangladeshMd. Jasim Uddin0Md. Shamsur Rahman1Saima Sultana Sonia2Sheikh Khadijatul Kubra3Md. Sujon Mia4Selina Yeasmine5Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh; Corresponding author.Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, BangladeshDepartment of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, BangladeshDepartment of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, BangladeshDepartment of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, BangladeshFreshwater Station, Bangladesh Fisheries Research Institute, Mymensingh, 2201, BangladeshThe current study aimed to describe the annual gametogenic phenology of the oyster Magallana bilineata (Röding, 1798) (=Crassostrea madrasensis), which is found on the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh. Samples were drawn monthly from the intertidal region during low tide, from which 20 adult individuals were selected at random for biometry and histology. The mean condition index (CI), a ratio of tissue wet weight (g) to shell length (cm), varied from 0.58 ± 0.08 to 1.32 ± 0.36. Histology revealed two spawning cycles in the habitat of M. bilineata over the 12 months of the study. Gametogenesis initiated in December and May, and ripe animals principally occurred from July to September and February to May. In the habitat, M. bilineata exhibited two spawning peak periods: April to June and August to October. The undifferentiated stage as a preparatory step for the next spawning extended from November to February for the first spawning cycle and for a brief period in June for the next spawning cycle. The initiation of spawning in March could be associated with the high-level decline of salinity and increased temperature between February and March, in association with the annual rainfall start, whereas the next spawning cycle could be associated with a gradual increase in salinity. No spawning activity was reported from December to February, when the water temperature remained below 22 °C. Further study could be undertaken on the timing of spatfall of M. bilineata in the habitat to harvest spats for commercial farming of this promising species.http://www.sciencedirect.com/science/article/pii/S2405844024047844OysterMegallana bilineataGametogenic cycleSex ratioCondition indexMaturity index |
| spellingShingle | Md. Jasim Uddin Md. Shamsur Rahman Saima Sultana Sonia Sheikh Khadijatul Kubra Md. Sujon Mia Selina Yeasmine Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh Heliyon Oyster Megallana bilineata Gametogenic cycle Sex ratio Condition index Maturity index |
| title | Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh |
| title_full | Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh |
| title_fullStr | Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh |
| title_full_unstemmed | Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh |
| title_short | Annual gametogenic phenology of oyster, Magallana bilineata (Röding, 1798) collected from the west coast of Moheshkhali Island, Cox's Bazar, Bangladesh |
| title_sort | annual gametogenic phenology of oyster magallana bilineata roding 1798 collected from the west coast of moheshkhali island cox s bazar bangladesh |
| topic | Oyster Megallana bilineata Gametogenic cycle Sex ratio Condition index Maturity index |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024047844 |
| work_keys_str_mv | AT mdjasimuddin annualgametogenicphenologyofoystermagallanabilineataroding1798collectedfromthewestcoastofmoheshkhaliislandcoxsbazarbangladesh AT mdshamsurrahman annualgametogenicphenologyofoystermagallanabilineataroding1798collectedfromthewestcoastofmoheshkhaliislandcoxsbazarbangladesh AT saimasultanasonia annualgametogenicphenologyofoystermagallanabilineataroding1798collectedfromthewestcoastofmoheshkhaliislandcoxsbazarbangladesh AT sheikhkhadijatulkubra annualgametogenicphenologyofoystermagallanabilineataroding1798collectedfromthewestcoastofmoheshkhaliislandcoxsbazarbangladesh AT mdsujonmia annualgametogenicphenologyofoystermagallanabilineataroding1798collectedfromthewestcoastofmoheshkhaliislandcoxsbazarbangladesh AT selinayeasmine annualgametogenicphenologyofoystermagallanabilineataroding1798collectedfromthewestcoastofmoheshkhaliislandcoxsbazarbangladesh |