...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Herpetological journal >Ecological functions of the foam nests of the Japanese treefrog, Rhacophorus arboreus (Amphibia, Rhacophoridae)
【24h】

Ecological functions of the foam nests of the Japanese treefrog, Rhacophorus arboreus (Amphibia, Rhacophoridae)

机译：日本树蛙Rhocophorus arboreus（两栖动物，Rhacophoridae）的泡沫巢的生态功能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Using both field observations and laboratory experiments, thermal and nutritional functions of the arboreal foam nests of the Japanese treefrog Rhacophorus arboreus were examined in early summer in the years 2000-2002. The temperature at the centre of the nests and ambient air temperature were monitored using a data logger in the field for several days. The results showed thermal regulation by the foam mass; the inside of the nests was maintained up to 6 degrees C cooler by the foam masses when the ambient temperature was high (> 25 degrees C). Laboratory experiments also showed that hatching success of the embryos was very low at high temperatures (near 30 degrees C). The insulation effect of the foam nests is, therefore, considered to be adaptive for R. arboreus. Hatchling growth was examined for a week under different food conditions: water only (no food), foam mass and boiled lettuce. Larvae showed no significant growth without food, but they grew to be 2-5 times heavier in dry body mass than hatchlings when supplied with foam mass or boiled lettuce. Foam mass proved to be at least as effective as boiled lettuce as a food for hatchlings. The present study demonstrates the thermal and nutritional effects of the foam nests of R. arboreus.
机译：利用野外观察和实验室实验，在2000-2002年初夏对日本树蛙Rhacophorus arboreus的树状泡沫巢的热和营养功能进行了研究。使用数据记录仪在野外对巢中心的温度和周围空气温度进行几天的监测。结果表明，热调节受泡沫质量的影响。当环境温度高（> 25摄氏度）时，泡沫块将巢的内部温度保持在6摄氏度以下。实验室实验还表明，在高温（接近30摄氏度）下，胚胎的孵化成功率非常低。因此，泡沫套的隔热效果被认为适合于红斑蛙。在不同的食物条件下检查了一个星期的雏鱼生长：只有水（没有食物），泡沫块和生菜。幼虫在没有食物的情况下没有明显的生长，但是当与泡沫幼体或煮熟的生菜一起供应时，幼体的干重比孵化的幼虫重2-5倍。泡沫物质被证明至少与水煮生菜一样有效。本研究证明了R. arboreus的泡沫巢的热和营养作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号