Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia
Asiatic hard clam, Meretrix meretrix is one of the important shellfishery resources in Marudu Bay, Sabah, Malaysia. It is among the most popular clam species being widely traded in the local wet markets around Sabah, Malaysia. Unfortunately, the shellfishery management for this species has not been...
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| Формат: | Стаття |
| Мова: | English English |
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Society for Indonesian Biodiversity
2021
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| Онлайн доступ: | https://eprints.ums.edu.my/id/eprint/31832/1/Sex%20ratio%2C%20gonadal%20and%20condition%20indexes%20of%20the%20Asiatic%20hard%20clam%2C%20Meretrix%20meretrix%20in%20Marudu%20Bay%2C%20Malaysia_ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/31832/2/Sex%20ratio%2C%20gonadal%20and%20condition%20indexes%20of%20the%20Asiatic%20hard%20clam%2C%20Meretrix%20meretrix%20in%20Marudu%20Bay%2C%20Malaysia.pdf |
| _version_ | 1825714581602828288 |
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| author | Laditah Duisan Gazali Salim Julian Ransangan |
| author_facet | Laditah Duisan Gazali Salim Julian Ransangan |
| author_sort | Laditah Duisan |
| collection | UMS |
| description | Asiatic hard clam, Meretrix meretrix is one of the important shellfishery resources in Marudu Bay, Sabah, Malaysia. It is among the most popular clam species being widely traded in the local wet markets around Sabah, Malaysia. Unfortunately, the shellfishery management for this species has not been well established. In addition to overexploitation, habitat destruction is also one of the significant threats to this species due to the extensive land use of the coastal areas in Sabah. Hence, conservation and breeding efforts for this species are greatly required. Therefore, the current study was conducted to examine the sexual maturity of the clam with respect to shell length classes for artificial seed production purposes. For this study, a total of 86 clam specimens were randomly collected from mudflats in Marudu Bay. The specimens were utilized for gonad histological and condition analyses. The clams were grouped into three shell length classes; (3.00-4.99) cm, (5.00-6.99) cm, and (7.00-8.99) cm prior to the analyses. Results showed the natural stock of the Asiatic hard clams in Marudu Bay was dominated by females (1.39:1) over males with no hermaphroditism observed. The gonadal index was recorded higher among clams with shell lengths between 5.00 and 6.99 cm. The condition index analysis also recorded high (>4.0) for clams in all the shell length classes. The findings of this study suggest that the clams with shell lengths between 5.00 cm and 7.00 cm are already fully matured and can be utilized as a broodstock candidate for an artificial breeding program in the hatchery. |
| first_indexed | 2024-03-06T03:13:57Z |
| format | Article |
| id | ums.eprints-31832 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:13:57Z |
| publishDate | 2021 |
| publisher | Society for Indonesian Biodiversity |
| record_format | dspace |
| spelling | ums.eprints-318322022-03-04T07:51:53Z https://eprints.ums.edu.my/id/eprint/31832/ Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia Laditah Duisan Gazali Salim Julian Ransangan QL360-599.82 Invertebrates Asiatic hard clam, Meretrix meretrix is one of the important shellfishery resources in Marudu Bay, Sabah, Malaysia. It is among the most popular clam species being widely traded in the local wet markets around Sabah, Malaysia. Unfortunately, the shellfishery management for this species has not been well established. In addition to overexploitation, habitat destruction is also one of the significant threats to this species due to the extensive land use of the coastal areas in Sabah. Hence, conservation and breeding efforts for this species are greatly required. Therefore, the current study was conducted to examine the sexual maturity of the clam with respect to shell length classes for artificial seed production purposes. For this study, a total of 86 clam specimens were randomly collected from mudflats in Marudu Bay. The specimens were utilized for gonad histological and condition analyses. The clams were grouped into three shell length classes; (3.00-4.99) cm, (5.00-6.99) cm, and (7.00-8.99) cm prior to the analyses. Results showed the natural stock of the Asiatic hard clams in Marudu Bay was dominated by females (1.39:1) over males with no hermaphroditism observed. The gonadal index was recorded higher among clams with shell lengths between 5.00 and 6.99 cm. The condition index analysis also recorded high (>4.0) for clams in all the shell length classes. The findings of this study suggest that the clams with shell lengths between 5.00 cm and 7.00 cm are already fully matured and can be utilized as a broodstock candidate for an artificial breeding program in the hatchery. Society for Indonesian Biodiversity 2021 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/31832/1/Sex%20ratio%2C%20gonadal%20and%20condition%20indexes%20of%20the%20Asiatic%20hard%20clam%2C%20Meretrix%20meretrix%20in%20Marudu%20Bay%2C%20Malaysia_ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/31832/2/Sex%20ratio%2C%20gonadal%20and%20condition%20indexes%20of%20the%20Asiatic%20hard%20clam%2C%20Meretrix%20meretrix%20in%20Marudu%20Bay%2C%20Malaysia.pdf Laditah Duisan and Gazali Salim and Julian Ransangan (2021) Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia. Biodiversitas, 22. pp. 4895-4904. ISSN 1412-033X (P-ISSN) , 2085-4722 (E-ISSN) https://smujo.id/biodiv/article/view/9248/5269 https://doi.org/10.13057/biodiv/d221123 https://doi.org/10.13057/biodiv/d221123 |
| spellingShingle | QL360-599.82 Invertebrates Laditah Duisan Gazali Salim Julian Ransangan Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia |
| title | Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia |
| title_full | Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia |
| title_fullStr | Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia |
| title_full_unstemmed | Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia |
| title_short | Sex ratio, gonadal and condition indexes of the Asiatic hard clam, Meretrix meretrix in Marudu Bay, Malaysia |
| title_sort | sex ratio gonadal and condition indexes of the asiatic hard clam meretrix meretrix in marudu bay malaysia |
| topic | QL360-599.82 Invertebrates |
| url | https://eprints.ums.edu.my/id/eprint/31832/1/Sex%20ratio%2C%20gonadal%20and%20condition%20indexes%20of%20the%20Asiatic%20hard%20clam%2C%20Meretrix%20meretrix%20in%20Marudu%20Bay%2C%20Malaysia_ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/31832/2/Sex%20ratio%2C%20gonadal%20and%20condition%20indexes%20of%20the%20Asiatic%20hard%20clam%2C%20Meretrix%20meretrix%20in%20Marudu%20Bay%2C%20Malaysia.pdf |
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