WEKO3
アイテム
Population dynamics, reproduction, and shell nacre characteristics of an alien freshwater mussel, Sinanodonta woodiana, inhabiting different elevations in West Java, Indonesia
http://hdl.handle.net/10076/0002000164
http://hdl.handle.net/10076/0002000164ac5bab5f-1667-477d-828b-36c605d151a0
| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-08-31 | |||||||
| タイトル | ||||||||
| タイトル | Population dynamics, reproduction, and shell nacre characteristics of an alien freshwater mussel, Sinanodonta woodiana, inhabiting different elevations in West Java, Indonesia | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| 著者 |
SAHIDIN, ASEP
× SAHIDIN, ASEP
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| 著者（ヨミ） | ||||||||
| 姓名 | サハディン, アセップ | |||||||
| 言語 | ja | |||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Fifty years ago, the alien freshwater mussel Sinanodonta woodiana was accidentally introduced into Indonesia contaminated with silver carp (Cyprinus carpio) and tilapia(Oreocromis niloticus) and spread rapidly across the island. Furthermore, people never utilize this species from nature because they assume it is not economically beneficial to induce an increasing population in nature. The vertical distribution of this species needs to be fully assessed. Knowledge of the current population, life cycle, and shell nacre color and nacre shell microstructure from lower to high elevations is helpful for its effective fisheries utilization and ecological conservation. The present study explored population dynamics and reproduction for the predicted invasiveness of this species in the ecosystem. Furthermore, we observed and analyzed the shell nacre color and microstructure to improve the half-pearl quality produced in their nacre. Our studies revealed that the successful reproduction of S. woodiana across elevations continued throughout the year (3 – 4 times/year), with a high number of larvae per gravid mussel (22.3 x 104 – 90.2 x 104). The sex reversal from female to hermaphrodites under environmental pressure in low chlorophyll-a and high suspended solids concentrations. The midland area showed the highest number of larvae per gravid mussel at 90.2 x 104 and the fewest number of hermaphrodites mussel at 10% of the total samples. In addition, shell biometric analysis allowed us to conclude that S. woodiana trends protandry. Furthermore, the distribution data showed that the mussel was found in 78.6% of the 56 sampling locations across elevations. Midland areas showed the highest density of 5.63 ind/m2, dominated by medium shell sizes at 100 – 150 mm, and the largest number of cohorts (13 cohorts). The growth von Bertalanffy analysis recorded that they have a long life of 12 – 15 years, with a maximum shell length of 165.3 – 225.9 mm. Accordingly, the continuous growth of S. woodiana will significantly increase populations of the mussels that would occupy the habitat,and eliminate the native mussels, especially in midland elevations. Nevertheless, S. woodiana has economic potential for producing half-pearl in its nacreous shell, which are gold, yellow, and silver in color. The posterior shell area is a nacre with a strong gold color, which is a high yellowness index, a thicker whole nacre layer, and thinner tablet nacre thickness. Mussels from the midland elevations displayed strong goldcolored nacre with a high yellowness index and high brightness. In addition, shells from a high total suspended solids (TSS, >10 mg/L) were correlated with abundant freckles in the nacre (R= 0.51; p < 0.001), a thin whole nacre layer, lowest yellowness index and brightness, and the freckles can decrease quality of a pearl. Our shell nacre analysis indicates the best half pearl culture in midlands elevations, posterior shell positions, and low TSS environment (< 10 mg/L). Our findings highlight the successful reproduction of an alien freshwater mussel, S. woodiana, under environmental pressure, which can rapidly increase the population across elevations. According to the results, S. woodiana has invasive properties and will eliminate native species in the future. Hence, we urgently need to control the spread of the population by periodically harvesting with a community-based management strategy to prevent its invasion and producing half-pearls to add economic benefit to maintaining continuous regular harvesting (1-2 times per year). Integrated and implemented of research, regulation, and management, at the national and regional levels are required to control this species in the Indonesian freshwater ecosystem. |
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| 言語 | en | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 本文/Aquagenetics Laboratory - Department of Life Sciences Graduate School of Bioresources Mie University | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 153p | |||||||
| 書誌情報 |
発行日 2023-09-25 |
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| フォーマット | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | application/pdf | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| その他の言語のタイトル | ||||||||
| その他のタイトル | インドネシア Java 島⻄部の異なる標⾼に⽣息する淡⽔産⼆枚⾙ Sinanodonta woodiana の個体群動態, 繁殖, および⾙殻真珠層の特徴 | |||||||
| 言語 | ja | |||||||
| 出版者 | ||||||||
| 出版者 | 三重大学 | |||||||
| 出版者（ヨミ） | ||||||||
| ミエダイガク | ||||||||
| 学位名 | ||||||||
| 学位名 | 博士(学術) | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 14101 | |||||||
| 学位授与機関名 | 三重大学 | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2023-09-25 | |||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲学術第2222号 | |||||||
| 資源タイプ（三重大） | ||||||||
| Doctoral Dissertation / 博士論文 | ||||||||
