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タイトルヨミ
シンジコ オヨビ ナカウミ ニ オイテ シュンキ ニ トウカ トラップ デ サイシュウ サレタ コチギョ
日本語以外のタイトル
Larvae and juvenile fishes collected by light trap sampling in Lake Shinji and Nakaumi Lagoon
ファイル
言語
日本語
著者
横尾 俊博
内容記述(抄録等)
Fishes were sampled using an overnight light trap at Ronden and Teratsu in Lake
Shinji and Eshima in Nakaumi Lagoon from March through June 2009, with an aim to reveal
the spatial and temporal variation of larval and juvenile fish fauna in these lakes. A total of 7416 individuals of 6 species, 52 individuals of 6 species and 1466 individuals of 10 species were collected in the respective sampling sites. In Lake Shinji, Gymnogobius taranetzi (49.6% of total individuals) and Salangichthys microdon (48.6%) were almost entirely dominated at Ronden, and Gymnogobius taranetzi (40.4%), Hypomeus nipponensis (26.9%) and Salangichthys microdon (21.2%) were also dominated at Teratsu. At Eshima in Nakaumi Lagoon, Chaenogobius spp. (67.7%), Tridentiger spp. (16.6%), Acanthogobius flavimanus (7.3%) and Gymnogobius breunigii (5.7%) were determined to be the dominant species. Both larvae and juveniles of “amphidromous species” and“ estuarine species” mainly occurred in Lake Shinji, while those
of“ estuarine species” and“ marine species” occurred in Nakaumi Lagoon. Results of this study indicate that the difference of larval and juvenile fish fauna reflect the diverse reproductive mechanisms of amphidromous, estuarine and marine fishes in Lake Shinji and adjacent Nakaumi Lagoon along the estuarine salinity gradient between these lakes.
掲載誌名
Laguna : 汽水域研究
16
開始ページ
47
終了ページ
52
ISSN
21852995
発行日
2009-06
NCID
AN10439529
出版者
島根大学汽水域研究センター
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
業績ID
e10159
部局
研究・学術情報本部 エスチュアリー研究センター
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