8 0 0 0 OA 実験飼育下で判明したカラスガイ幼生の宿主魚類
- 著者
- 伊藤 寿茂 上杉 翔太 柿野 亘
- 出版者
- 日本貝類学会
- 雑誌
- Venus (Journal of the Malacological Society of Japan) (ISSN:13482955)
- 巻号頁・発行日
- vol.74, no.3-4, pp.79-88, 2016-11-17 (Released:2016-12-10)
- 参考文献数
- 36
- 被引用文献数
- 2
Host species for the glochidia of the freshwater unionid mussel Cristaria plicata (Leach, 1815) were identified by determining whether the glochidia infected 27 fish taxa. The fishes were kept in tanks for 11–17 days after glochidial infection, and the numbers of glochidia and metamorphosed juveniles detached from the hosts were counted. Living juveniles of C. plicata detached from Tribolodon hakonensis, Pseudorasbora parva, Oryzias sp., Anabas testudineus, Trichogaster trichopterus, Trichopodus microlepis, Macropodus opercularis, Odontobutis obscura, Acanthogobius flavimanus, Gymnogobius urotaenia, G. castaneus, Tridentiger brevispinis, Rhinogobius giurinus, R. nagoyae and Rhinogobius sp. Therefore, these fishes were identified as suitable host species for the glochidia of C. plicata. Some native fishes that inhabit Anenuma Lake (e.g., Gy. castaneus) are considered to be useful local hosts. Moreover, some labyrinth fishes such as Anabas testudineus, which can climb out of the water and crawl over wet land, may disperse glochidia and juveniles over land in southern areas.
5 0 0 0 OA イシガイ類とその生態環境の保全―カワシンジュガイ科,イシガイ科の分類体系変更に着目して―
- 著者
- 柿野 亘 竹内 基 伊藤 寿茂 成田 勝 中村 咲蓮 塩練 元輝 杉山 真言 岡田 あゆみ 筏井 宏実 眞家 永光 馬場 光久
- 出版者
- 日本動物分類学会
- 雑誌
- タクサ:日本動物分類学会誌 (ISSN:13422367)
- 巻号頁・発行日
- vol.54, pp.23-35, 2023-02-28 (Released:2023-03-07)
- 参考文献数
- 109
In recent years, the classification system of Unionoida (Margaritiferidae, Unionidae) has undergone major changes from conventional methods by shell morphology, due to breakthroughs in approaches based on molecular phylogenetic analysis. We compared the classification system trends of the Margaritiferidae and Unionidae distributed in Japan, and pointed out that there is a time lag to the classification determinations of the latter. Although the scientific names have been changed, the existence, distribution, and ecological information (ex. host fish for glochidia) of two Japanese margaritiferids have been established, and conservation measures and regulations based on the Red List and laws can be expected. On the other hand, the Unionidae consisted of 3 subfamilies, 11 genera and 15 species has increased to 2 subfamilies, 13 genera and 26 species (excluding alien species) by the new classification system reported in 2020. Therefore, information on the distribution and ecology of many new species must be elucidated. A new classification system will be assumed the further revision, especially for the genus Sinanodonta, and the risk of some local populations extinction increase before clarifying the actual situation of species. We are now proceeding to clarify the early life stage of some Unionoida mussels (ex. parasitic stage, salinity tolerance), but insufficient knowledge of the life cycle of Unionoida has prevented the establishment of complete ex-situ conservation methods. Conversion project of numerous reservoirs are that the most important habitats for Unionidae species pressing forward in Japan. In light of this situation, it is hoped that the new classification system that can serve as a basis for on-site conservation will spread throughout as soon as possible to realize comprehensive conservation.
- 著者
- 酒井 治己 栗原 善宏 古内 友樹 岡田 あゆみ 竹内 基 柿野 亘 須田 友輔 後藤 晃
- 出版者
- The Malacological Society of Japan
- 雑誌
- Venus (Journal of the Malacological Society of Japan) (ISSN:13482955)
- 巻号頁・発行日
- vol.80, no.3-4, pp.47-66, 2022-08-26 (Released:2022-08-26)
- 参考文献数
- 21
カムチャツカ・サハリン・千島・日本列島地域から記載されたカワシンジュガイ属 Margaritifera 担名タクサのタイプ標本を調査した結果,この地域を通して2種の存在が確認され,それぞれカワシンジュガイMargaritifera laevis(Haas, 1910)及びコガタカワシンジュガイM. kurilensis(Zatravkin & Starobogatov, 1984)に同定された。前種は前閉殻筋痕上縁が丸く擬主歯が比較的小さいこと,一方後種は前閉殻筋痕上縁が角張っており擬主歯が比較的大きく頑丈なことによって特徴づけられる。コガタカワシンジュガイにしばしば適用されてきたM. middendorffi (Rosén, 1926)は M. laevisの新参異名であると判断された。また,M. middendorffi の新参異名とされてきた M. togakushiensis Kondo & Kobayashi, 2005 は,M. kurilensis の新参異名と判断された。