A preliminary investigation on catch composition and hotspots of hatchery release species for artisanal fishery in the coastal waters off Penghu

澎湖沿近岸海域家計型漁業漁獲種類組成及放流物種捕獲熱點之初步調查

陳律祺(Lu-Chi Chen) ； 謝恆毅(Hernyi Justin Hsieh) ； 曾振德(Chen-Te Tseng) ； 林金榮(Kim-Jung Lin) ； 藍國瑋(Kuo-Wei Lan)

《臺灣水產學會刊》 44卷3期 (2017/09) Pp. 197-207

https://doi.org/10.29822/JFST.201709_44(3).0006

摘要

To understand the catch composition and hotspots of hatchery species for artisanal fishery in the coastal waters off Penghu, this study collected logbook data from 20 households from May 2015 to April 2016. Results from the analysis of logbook data indicated that 84 different species with a total of 24,715 kg in body weight were caught. The catch composition changed with the seasons. In additions, the operating location for artisanal fishery mainly distributed in the inner sea and nearshore areas of Penghu. The hatchery release species accounted for 3.55% of the total catch. Among the hatchery release species, Rhabdosargus sarba was the most dominant species (1.94%). According the index of relative importance (IRI), R. sarba was the important catch species in winter. The catch hotspots of hatchery release species were also found to vary with fish species. R. sarba and coioides were hatchery release species commonly captured in the waters off Penghu.

關鍵字

Penghu ； catch species composition ； catch hot spots

並列摘要

為瞭解澎湖海域家計型漁業漁獲及放流物種捕獲概況，本研究自2015年5月開始至翌年4月建置20戶標本戶協助填報漁撈日誌。分析漁撈日誌資料結果顯示，研究期間澎湖沿近岸海域共記錄84種漁獲物種及共漁獲約24,715公斤，漁獲種類組成會隨季節推移而改變。另外，家計型漁業主要作業位置集中於澎湖內海及部分近岸水域。而放流物種漁獲量僅佔總漁獲量的3.55%，其中四絲馬鮁、布氏鯧鰺及尖吻鱸無捕獲紀錄。另外根據物種相對重要性指數發現，放流物種中以黃錫鯛最為優勢，黃錫鯛為澎湖沿近岸海域冬季相對較重要之漁獲種。在放流物種捕獲熱點方面，不同物種捕獲熱點不相同，而澎湖周邊水域以黃錫鯛及點帶石斑較容易被捕獲。

並列關鍵字

澎湖 ； 漁獲種類組成 ； 捕獲熱點