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頁籤選單縮合
題名 | Suitability of Minimum Legal Fishing Size of Lobsters in Taiwan=臺灣龍蝦法定最小捕捉體型的適合性 |
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作者 | 鍾國仁; | 書刊名 | 臺灣水產學會刊 |
卷期 | 27:1 2000.03[民89.03] |
頁次 | 頁1-6 |
分類號 | 439.66 |
關鍵詞 | 龍蝦; 法定最小捕撈體型; Spiny lobster; Minimum legal fishing size; |
語文 | 英文(English) |
中文摘要 | 本研究將臺東縣成功沿海捕撈的二種龍蝦養在試驗池中觀察它們的成長,依據成長的變化,檢討目前法定最小捕撈體型是否適用於各種龍蝦,並討論龍蝦保育的策略,試驗時間為一年,其間Panulirus ornatus成長較P. homarus快。以頭胸甲長每5 mm做體型分級,比較各級龍蝦每星期的成長率,P. homarus 的成長率在頭胸甲長66-70 mm級突然大幅降下,在P. ornatus 這種成長率大幅降下的情發生在頭胸甲長106-110 mm級,這種成長速度大幅降低的現象是因為能量大量應用於生殖系統的發育,而減緩了肉體的成長。當P. homarus 的頭胸甲長61-65 mm與P. ornatus的101-105 mm時,體長分別約為17.4與25.4 cm。由此可知法定的最小捕撈體型20 cm並不適用於某些種龍蝦。為了挽救已極度開發的龍蝦資源,本文建議可限量捕撈小龍蝦苗養殖,捕撈年老的龍蝦,禁止捕撈生殖力旺盛的青壯年龍蝦。 |
英文摘要 | In this study two species of spiny lobster caught along the coast of Taitung Taiwan were reared in the experimental ponds to examine the suitability of current minimum legal fishing size of lobsters living off the coast of Taiwan. During the experiment, Panulirus ornatus grew faster than P. homarus. A dramatical decrease of growth rate occurred between 61-65 and 66-70 mmCL size class of P. homarus (about 17.4 cm body length), and between 101-105 and 106-110 mmCL size class of P. ornatus (about 25.4 cm body length) respectively. Changes in growth rate signified a shift in energy use at onset of maturation. For allowing a greater proportion of lobsters to mature prior to harvest, it is apparent that current minimum legal size (20 cm body length) is not suitable to some spiny lobster species. For resource reservation, it is suggested allowing to collect young juveniles for culture and to harvest aged populations, and prohibiting to catch adult population of active reproduction. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。