摘要
通过观察昭觉林蛙(Ranachaochiaoensis)蝌蚪在栖息地的分布状况,统计和分析不同发育期蝌蚪在不同植被盖度、水深和水温下的分布频次。其结果表明,Ⅰ、Ⅱ期蝌蚪更倾向于选择植被盖度为41%—70%的水域;Ⅲ期蝌蚪对植被盖度的选择不明显。Ⅱ期蝌蚪倾向于选择水深为0·11—0·30m的水域;Ⅰ、Ⅲ期蝌蚪对水深的选择不明显,且Ⅲ期蝌蚪在水深大于0·31m的水域无分布。随着蝌蚪生长发育,Ⅰ期至Ⅲ期对水深的选择不断变浅。Ⅰ、Ⅱ期蝌蚪均倾向于选择水温为19—25℃的水域;Ⅲ期蝌蚪对水温的选择不明显,但在水温为8—13℃的水域无分布。
By observing the distribution of tadpoles of Rana chaochiaoensis within its habitat, the distribution frequency of tadpoles in different stages under different vegetation coverage, water depth and temperature was calculated and analyzed. The results showed that tadpoles of development Stage Ⅰ and Ⅱ tend to select areas with vegetation coverage of 41% -70%, but selection of vegetation coverage is not obvious by Stage Ⅲ . Only tadpoles of Stage n tend to select areas of 0.11 - 0.30 m water depth. Tadpoles of Stages Ⅰ and Ⅲ do not obviously select for water depth, and there were no tadpoles of Stage Ⅲ in areas deeper than 0.31 m. As tadpoles mature, selection of water depth gradually changes to a preference for shallow water from Stage Ⅰ to Ⅲ. Tadpoles of Stage Ⅰ and Ⅱ tend to select areas of water temperature between 19- 25 ℃. Selection of water temperature is not obvious in tadpoles of Stage Ⅲ, and there were no tadpoles of Stage m in areas of 8 - 13 ℃.
基金
国家重点基础研究发展计划("973"计划)资助项目(2003CB415100)
云南省环境科学与工程创新人才联合培养基地资助
关键词
昭觉林蛙
蝌蚪
栖息地利用
昆明
Rana chaochiaoensis
Tadpole, Habitat utilization, Kunming
