Seasonal characteristics of larval fish assemblages in the coastal waters of Hualien, Taiwan

• Main Authors: I-Ling Tsai, 蔡依凌
• Other Authors: Ming-An Lee
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/00128467072589057085

碩士 === 國立臺灣海洋大學 === 環境生物與漁業科學學系 === 102 === In this study, the author used bongo-net and CTD for larvae collection and hydrological data observations in June and September 2009, and January and April 2010. The author utilized cluster analysis to explore the seasonal characteristics of the larval community structure in Hualien coastal area. The results show that the hydrological conditions in Hualien sea area vary from different seasons and spatial changes. During the process of the experiment, 605 fish larvae, belonging to 40 families 62 taxa. The most dominant species in summer 2009 were Myctophidae spp. (77.86%)、Callionymidae spp. (8.42%)、Scombridae spp. (3.50%)、Carangidae spp. (1.67%), the most dominant species in fall 2009 is Leiognathidae spp. (23.97%)、Pomacanthidae spp.(16.96%)、Gobiidae spp.(12.10%)、Carangidae spp.(9.12%) 、Apogonidae spp.(8.07%), the most dominant species in winter 2010 is Gobiidae spp. (64.36%)、Myctophidae spp. (11.78%)、Stomiidae spp. (11.06%)、Carangidae spp.(10.98%), and the most dominant species in spring is Myctophidae spp. (21.80%)、Gobiidae spp. (21.48%)、Clupeidae spp. (15.83%)、Carangidae spp. (8.26%)、Apogonidae spp. (4.79%). Based on their ecological features, they could be categorized into 6 groups: inshore species, rocky species, coastal-estuarine species, demersal species, deep-sea species, and migratory speices. Among these categories, the specimens of coastal-estuarine species were the most abundant, while the inshore fishes were richest in number. The results could be roughly divided into two seasonal types: summer-autumn and winter-spring.