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首页> 外文期刊>Belgian Journal of Zoology >Calling activity of crossodactylus gaudichaudii (Anura : Hylodidae) in an Atlantic rainforest area at IIha grande, Rio de janeiro, Brasil
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Calling activity of crossodactylus gaudichaudii (Anura : Hylodidae) in an Atlantic rainforest area at IIha grande, Rio de janeiro, Brasil

机译：Crossodactylus gaudichaudii（Anura：Hylodidae）在巴西里约热内卢IIha grande的大西洋雨林地区的呼唤活动

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摘要

The calling activity in anuran amphibians can be influenced by several environmental variables that can affect such activity in different ways. In the present study we investigated the relationship of the daily calling activity of males of the diurnal frog Crossodactylus gaudichaudi with some environmental variables. The study was carried out between July 2003 and June 2005 in an area of Atlantic forest in Ilha Grande, an island located on the southern coast of the State of Rio de Janeiro. The observations were made in three fixed points in the forest, adjacent to streams, always from 05:00 to 19:00h, one day per month. We verified that the males of C. gaudichaudii have strictly diurnal calling activity, staying active during all months of the year. The highest counts of emitted calls were registered, in general, at the beginning and at the end of each day sampled. Air temperature, relative humidity and light intensity affected the daily rate of calling activity in different ways, with air temperature and light intensity seeming to be the factors that influence most importantly the activity of the species. The photoperiod seemed to be the main factor regulating the extension of the calling activity along the year in males of C. gaudichaudii.
机译：无水两栖动物的呼唤活动可能受到几种环境变量的影响，这些变量可以不同方式影响此类活动。在本研究中，我们调查了日间青蛙高地克蛙（Crosodactylus gaudichaudi）雄性的日常呼唤活动与某些环境变量之间的关系。该研究于2003年7月至2005年6月在位于里约热内卢州南部海岸的伊利亚格兰德州的一片大西洋森林中进行。观测通常在每月的一天05:00至19：00h在与溪流相邻的森林中的三个固定点进行。我们验证了C. gaudichaudii的雄性具有严格的昼间呼叫活动，在一年中的所有月份都保持活跃。通常，在每天采样的开始和结束时都会记录发出的呼叫次数最多的情况。气温，相对湿度和光照强度以不同的方式影响每日呼叫活动的速率，其中气温和光照强度似乎是最重要的影响物种活动的因素。光周期似乎是调节高氏梭菌（C. gaudichaudii）男性一年中呼叫活动扩展的主要因素。

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