Aquatic Animals
Online ISSN : 2434-8643
Host fish species for glochidia and early development of the freshwater unionid mussel Buldowskia iwakawai observed in captivity
Toshishige Itoh Wataru KakinoMasaru NaritaShigeki DanMotoi Takeuchi
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JOURNAL OPEN ACCESS

2024 Volume 2024 Pages AA2024-12-

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Abstract
A freshwater mussel species, Buldowskia iwakawai, collected from Hokkaido, Japan, was reared in the laboratory, and glochidia obtained were used to investigate the host specificity and to observe early development after detachment from the host. Nineteen fish species were used as host candidates. The fishes were kept in tanks for 10–15 days after glochidial infection, and the number of glochidia and metamorphosed juveniles detached from the hosts were counted. Living mussel juveniles were observed in 13 fish species, of which eight were identified as new hosts for the glochidia of B. iwakawai. The juveniles of B. iwakawai were reared in upwelling chambers and fed a green alga, Chlorella vulgaris. Some juveniles survived for about two months, and their mean shell length exceeded 1.4 mm (1.12–1.92 mm), reaching the maximum size record (1.92 mm). The result implied that using upwelling chambers and feeding C. vulgaris are effective for successful culture of B. iwakawai.
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この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by/4.0/deed.ja
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