- 作者: 楊榮宗
- 作者服務機構: 國立臺灣大學海洋研究所
- 中文摘要: (1)北大西洋長鰭鮪的漁業動態的研究:我國鮪漁業在大西洋主要是以長鰭鮪為漁獲對象。本報告檢討延繩釣漁業的成熟魚資源與表層漁業的未成熟魚資源在量的方面的相互關係,藉以檢討近年這兩種漁業的實際動態,以及其與我國遠洋鮪漁業的利害關係。 (2)印度洋黃鰭鮪的研究:我國鮪漁業在印度洋的漁獲量僅次於日本,居世界第2位,為明瞭資源狀況,以鱗片、體長組成資料、海況資料以及漁獲統計資料,從事該海區,該魚種的年齡、成長以及資源構造的研究。 (3)鮪延繩釣餌料效應的經濟檢討:`為謀求我國鮪漁業的更加發展,餌料問題是關鍵之一。本報告考慮漁獲物的魚種、體重、魚價、餌料單價,以及釣獲率,從總經濟價值的大小分析討論各種餌料的優劣。
- 英文摘要: (1)Fisheries dynamics of the north Atlantic albacore: Two principal typesof fisheries exploit on the albacore stock in the north Atlantic, i.e., surface fisheryand longline fishery. The former catches the immature fish; and the latter capturesthe mature albacore. Stock-recruitment curve was estimated; and discussion wasmade on the present situation of the longline fishery in the area. (2) Age, growth and population structure of the yellowfin tuna in the IndianOcean: Scales of yellowfin from different parts of the Indian and western Pacificwexe collected and investigated along with catch statistics for the purpose of makingclear the age, growth and population structure of the species in these area. (3) Economic considerations of some baits used in tuna longlining: Saury, mack-erel, milkfish, squid and plastic artificial bait used in tuna longlining were comparedfrom the economic point of view. The species, body weigh and market price of thecatch as well as the hooking rate were taken into consideration.
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