農業部水產試驗所全球資訊網

一.台灣西南海域正櫻蝦生態與漁業管理之研究正櫻蝦(Sakura shrimp, Sergia lucens Hansen)係屬櫻花蝦科(Sergestidae)之一種，為大洋浮游性蝦類，全世界已知產於日本駿河灣及台灣西南海域。台灣正櫻蝦漁場主要位於22º 6'N至22º 27' 及120º 12'E至120º 39'E海域、沿岸100至300公尺等深線範圍，面積僅約320平方公里。漁期為每年11月至翌年5月。正櫻蝦殼薄、鈣質含量高，極具營養價值，且可由人類直接食用，為台灣沿岸海域之珍貴資源。但目前台灣有關正櫻蝦的研究報告尚十分缺乏，因此，筆者乃擬逐年按月收集正櫻蝦之漁海況資料及採集正櫻蝦標本，期能對正櫻蝦生態及漁場機制能有所掌握。同時進行正櫻蝦之初期可供利用資源量及評估正櫻蝦資源之研究，以究明正櫻蝦適正容許開發量並建立最適之管理模式，及達成正櫻蝦資源之有效利用。二.台灣東部深海未利用資源之漁場開發及試驗研究本計畫賡續過去的深海漁業資源調查試驗，積極投入深海未利用資源的技術開發、深海生物特性及漁場環境形成機制等方面的研究。現階段的重點之一即為櫻蝦及菱鰭魷等資源的調查開發及加工利用研究，短期內將進一步促成產銷班的成立，使該項珍貴的資源能夠在省人力、省能源的情況下順利產、銷，繼而達成永續利用的目標。

研究報告摘要(英) 一.台灣西南海域正櫻蝦生態與漁業管理之研究The sakura shrimp (Sergia lucens Hansen) is a pelagic planktonic shrimp that is caughtcommercially in the Suruga Bay of Japan and the coastal waters off southwesternTaiwan. In Taiwan, the main fishing grounds of S. lucens are located in from betweenlatitude 22º 6'N and 22º 27' N to longitude 120º 12'E and 120º 39'E. The area of fishing grounds, about 320km2, was only located in theisobath line of sea bottom between 100m and 300m in depth. The fishing season wasduring the period from November to May next year. The sakura shrimp with thin shell,rich in calcium and directly consumed by people, was a precious stock in the coastalwaters of Taiwan. At the present time, however, few papers have been published forstudying this shrimp. Therefore, to understand the ecology of S. lucens and mechanismof fishing ground formation, the fishing data, sea condition and S. lucens samples werecollected monthly. We also want to study the initial usable stock size and the resourceassessment of S. lucens for estimating the optimum yield and establishing the sustainablemanagement model.二.台灣東部深海未利用資源之漁場開發及試驗研究The present study is an extension and continuities of our previous study on deep-seafishery resources. The main purpose is to establish basic information for the speciesidentification, ecological conservations, exploitation of resources, etc., of the macrurandecapods and deep-sea cephalopods. The sonar sounding records of the present studyshow that the sakura shrimp (Sergia lucens) is distributed in the waters around the GueishanIslet and undertakes an apparent diurnal vertical migration. The resources areestimated to 333 metric tons.On the other hand, the sex of Thysanotheuthis rhombus may be distinguished visuallygreater than 250mm ML. The sexual ratio shows that the males are more than femalesaround the year, except January to March. Testis maturation has been observed in maleat 250-350mm and ovary maturation in female at 500-650 mm. The smallest maturefemale observed was 500mm ML, and the majority mature at 550-650mm ML.Spermatophores of male beginning from 570mm ML, and majority mature 650mm ML.