Habitat Utilization of Tadpoles of Rana chaochiaoensis at Different Development Stages in the Kunming Area
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Abstract
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 Ⅱ 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 Ⅲ in areas of 8-13 ℃.
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