A Preliminary Study on Species Composition and Seasonal Abundance of Fish Eggs and Larvae from the Coastal Waters Adjacent to the Tansui River Estuary,Taiwan(1984-1985)

淡水河口外緣沿岸之魚卵及仔稚魚種類組成及豐度季節性變動之初步研究（1984-1985）

王友慈(Yu-Tzu Wang) ； 曾萬年(Wann-Nian Tzeng) ； 李信徹(Sin-Che Lee)

《臺灣水產學會刊》 18卷1期 (1991/03) Pp. 7-20

https://doi.org/10.29822/JFST.199103.0002

摘要

人工魚礁對魚類的誘集效果良好，且為漁業管理的重要工具，已為一般人所承認。但目前已刋出的文章中，大部分是關於礁區的設置或魚類相變化之連續觀察，對人工魚礁設置後，其誘集的魚羣對當地漁獲量的影響程度如何？並未闡明。因此，本文將討論人工魚礁投放前與投放後的漁獲情形，來究明人工魚礁的效益。1．人工魚礁投放前與投放後其漁獲魚種有明顯的改變，投放前有22種魚類而投放後增為44種。2．選擇投放前與投放後均有捕獲的魚種（共22種），進行漁獲量的比較，在人工魚礁投放後，共有18種魚類的漁獲量增加，其中有6種顯著增加；4種減少，其中有2種顯著減少。3．在人工魚礁投放後其月別單位努力漁獲量及月別單位努力所得均明顯地增加。

關鍵字

種類組成 ； 魚卵 ； 仔稚魚 ； 季節性變動 ； 淡水河口緊隣沿岸

並列摘要

It is a general agreement that artificial reefs are effective fish attractantsand the emplacement of artificial reefs is an important fishery managementtool.Most published papers deal with building artificial reefs,or describe indetail the successional change of the species composition.In comparison,theimportance of fish attraction and the related changes of fish production haveless been addressed.This paper thus studies the effectiveness of artificialreefs by comparing fish production before and after reefs were emplaced.Theresults are presented as follow:1.The species composition changed after the artificial reefs were emplaced.A total of 44 species were recorded after the reef emplacement,compared with the 22 species recorded before the emplacement.2.Among 22 species recorded,the catch of 18 species increased after reefswere emplaced with a decrease of 4 species.3.The monthly catch per unit effort and monthly income per unit effortincreased substantially after reefs were emplaced.

並列關鍵字

Fish Eggs ； Fish Larvae ； Species Composition ； Seasonal Abundance ； Coastal Water Adjacent to Tansui River Estuary