臺灣產山椒魚之研究（二）阿里山地區山椒魚之族群生態研究

The Study of Salamanders from Taiwan (II) the Population Study of Hynobius Formosanus Maki in Alishan

陳世煌(Shyh-Hwang Chen) ； 呂光洋(Kuang-Yang Lue)

《師大生物學報》 21卷 (1986/12) Pp. 47-72

https://doi.org/10.29812/BBNTNU.198612.0005

摘要

The present study was done in Alishan area of Taiwan from December 1982 to June 1985. Results indicated that more than 70% of Formosan salamanders (Hynobius formosanus ) are found near creeks; no more than 5m from water. The distribution is influenced by the body size (SVL) and humidity. Salamanders congrated near the creeks during the dry season (Nov. to Apr.) and scattered away in the wet season (May to Oct.). By ANOVA test, there was no significant difference on distribution patterns between young (SVL＜25 mm) and adults (SVL≥45mm), while the distribution of juveniles (25mm≤SVL＜45mm) was significantly different (p＜0.01) from adults. Home ranges of Formosan salamanders are usually small. The size of home ranges from 26 animals measured falls between 0.02 and 12.47 m^2. They are paralleled to creeks and overlapped each other. Habitat disturbance would make salamanders to migrate a longer distance. There was no significant difference on migratory rates of salamanders between study area A and B. Concerning to the population density, study area B was much higher than area A. There was a high percentage of finding younger salamanders (SVL＜16.5 mm) during March. This could be interpreated that H. formosanus breeds in winter season on Alishan area.

並列摘要

The present study was done in Alishan area of Taiwan from December 1982 to June 1985. Results indicated that more than 70% of Formosan salamanders (Hynobius formosanus ) are found near creeks; no more than 5m from water. The distribution is influenced by the body size (SVL) and humidity. Salamanders congrated near the creeks during the dry season (Nov. to Apr.) and scattered away in the wet season (May to Oct.). By ANOVA test, there was no significant difference on distribution patterns between young (SVL＜25 mm) and adults (SVL≥45mm), while the distribution of juveniles (25mm≤SVL＜45mm) was significantly different (p＜0.01) from adults. Home ranges of Formosan salamanders are usually small. The size of home ranges from 26 animals measured falls between 0.02 and 12.47 m^2. They are paralleled to creeks and overlapped each other. Habitat disturbance would make salamanders to migrate a longer distance. There was no significant difference on migratory rates of salamanders between study area A and B. Concerning to the population density, study area B was much higher than area A. There was a high percentage of finding younger salamanders (SVL＜16.5 mm) during March. This could be interpreated that H. formosanus breeds in winter season on Alishan area.