農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

    本研究於2007-2016年期間，利用水試一、二號於台灣周邊海域共計完成16航次 ，總計746測站之鰻形類幼苗採樣，累計採樣284尾鰻形目(Anguilliformes)幼苗 ，其中以蛇鰻科(Ophichthidae)幼苗數量最高、其次為糯鰻科(Congridae)、鯙科 (Muraenidae)、海鰻科(Muraenesocidae)、鴨嘴鰻科(Nettastomatidae)，但無本研 究之目標種類日本鰻幼苗。據此，本研究推測柳葉形日本鰻鰻苗可能之分布水層超 過200m以深，亦或隨黑潮輸送至台灣周邊海域前已完成變態成鰻線。本年度澎湖地 區漁民尚未開始進行日本鰻苗捕撈作業，尚無相關漁獲資料；但本研究於成功灣海 域已捕獲12尾日本鰻苗，其全長介於55.2-59.7mm之間，平均體全長為57.7±1.5mm。

    In this study, 16 cruises, include 746 stations, werecarried on board Fishery Research 1 and 2, and 284 eel larvae of Anguilliformeswere sampled during 2007-2016 in the surrounding waters of Taiwan. The leptocephalus of Anguilla japonica had not caught in oursampling cruises, and the dominant categories of Anguilliformes eel including Ophichthidae, Congridae, Muraenidae, Muraenesocidaeand Nettastomatidae. Two hypotheses were made according to our samplingresults: 1) The leptocephali of Anguilla japonica larva distributed in the waters deeper than 200m; 2) Anguillajaponica larva metamorphose metamorphosed before it were transported intothe surrounding waters of Taiwan. There still have no catch data of Anguilla japonica larva in this year becausethe fisherman of Penghu has not start fishing on it. There have 12 Anguilla japonica larva caught in thewater of Cheng-Kung Bay, theirtotal length varied between 55.2-59.7mm, and the mean total length was 57.7±1.5mm.