日月潭水庫外來入侵種暹羅副雙邊魚(Parambassis siamensis)攝食生態之研究

Feeding Ecology of the Exotic Glass Fish (Parambassis siamensis) in Sun Moon Lake

陳智宏(Chih-Houng Chen) ； 郭世榮(Shih-Rong Kuo)

《特有生物研究》 11卷2期 (2009/07) Pp. 31-46

https://doi.org/10.7064/ESR.200907.0031

摘要

The glass fish (Parambassis siamensis) in the Sun Moon Lake was sampled monthly with a square-shape fishing net from June 2005 to May 2007. A total of 718 fish with a total weight of 2,365.60g were collected. Their stomach contents were examined, and then, analyzed with CLUSTER, MDS, the similar percentage (SIMPER) and one-way ANOSIM in PRIMER 6.0, and compared among the seasons, genders, and body sizes (＜50, 50-59, 60-69 and ≧70 mm). The results showed that the major food items of the glass fish were fish fry and Chironomids. No significant difference was found in food items between the genders, among the seasons, and among the body size classes. Due to their strong piscivorous habit, the exotic glass fish may cause damaging effects on the aquatic ecosystem and native fish populations.

關鍵字

外來種 ； 暹羅副雙邊魚 ； 攝食習性 ； 日月潭

並列摘要

The glass fish (Parambassis siamensis) in the Sun Moon Lake was sampled monthly with a square-shape fishing net from June 2005 to May 2007. A total of 718 fish with a total weight of 2,365.60g were collected. Their stomach contents were examined, and then, analyzed with CLUSTER, MDS, the similar percentage (SIMPER) and one-way ANOSIM in PRIMER 6.0, and compared among the seasons, genders, and body sizes (＜50, 50-59, 60-69 and ≧70 mm). The results showed that the major food items of the glass fish were fish fry and Chironomids. No significant difference was found in food items between the genders, among the seasons, and among the body size classes. Due to their strong piscivorous habit, the exotic glass fish may cause damaging effects on the aquatic ecosystem and native fish populations.

並列關鍵字

exotic species ； Parambassis siamensis ； feeding habits ； Sun Moon Lake