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

東港沿岸終年皆可捕獲蟳苗 (大眼幼體)，捕獲量以4 ~ 9月最多，10 ~ 11月及3月次之，12 ~ 2月最少。蟳苗之種類頻度，隨季節有很大的變異。3月份捕獲的蟳苗，花腳蟳與白腳蟳各佔一半，獨缺紅腳蟳；4、7、9等三個月份，以白腳蟳佔多數，花腳蟳次之，紅腳蟳最少；5、6、10月，以花腳蟳最多，白腳蟳次之，紅腳蟳最少；8月份則以紅腳蟳最常見，白腳蟳次之，花腳蟳最少；11月份，幾乎全是花腳蟳，少數為紅腳蟳，白腳蟳則不見蹤跡。白腳蟳、花腳蟳、紅腳蟳三種蟳苗整年度的佔有比率分別為51.7%、 28.8%、19.6%。三種蟳苗之成長，以花腳蟳最快，白腳蟳次之，紅腳蟳最慢。不過，最小生物體型，則以紅腳蟳最小，白腳蟳次之，花腳蟳最大。

The megalopae of three Scylla species can be captured from Tungkang Coast of Taiwan all year round . They were most abundant from April to September, followed in October, November and March in 1991 and the least from December to February. The composition of megalopae varied with seasons. Among the three species, S. paramamosain, S. serrata and S. olivacea each comprise 51.7%, 28.8%, 19.6% of the total yearly catch, respectively. In March, S. serrata and S. paramamosain each comprised half of the total with the absence of S. olivacea. In April, July and September, S. paramamosain is the most abundant, second by S. serrata and with S. olivacea being the least abundant. In May, June and October, S. serrata is the most abundant, second by S. paramamosain and with S. olivacea the least abundant. In August, S. olivacea is the most abundant, second by S. paramamosain and with S. serrata being the least abundant. In November, S. serrata comprised more than 90% of the total catch, S. olivacea comprise rest of them and with the absence of S. paramamosain. As for the growth, S. serrata was the fastest; followed by S. paramamosain and S. olivacea, S. serrata also has the biggest minimum biological size, but S. olivacea is the smallest.