• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Catch-up growth during juvenile life can compensate for the small metamorphic size in Euphlyctis cyanophlyctis
【24h】

Catch-up growth during juvenile life can compensate for the small metamorphic size in Euphlyctis cyanophlyctis

机译：青少年生活中的追赶性生长可以补偿蓝藻中的小变质体

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

Metamorphic size in amphibians with a biphasic mode of life is known to affect adult fitness. To test whether this is true of tropical anurans, influence of metamorphic size on future survival, growth rate, age and size at sexual maturation were studied in a continuously breeding tropical frog, Euphlyctis cyanophlyctis. In nature, intra-population size at metamorphosis (when the tail completely disappears; Gosner stage 46) varies significantly (22-30 mm in snout-vent length (SVL)). Analysis of growth rate and determination of age at first reproduction in a group of frogs reared in the outdoor enclosures revealed that rate of increase in SVL differed between small and large frogs only initially but comparable subsequently. Rate of increase in body mass on the other hand, was comparable between the two groups from the first month onwards until the termination of the experiment. Mortality was also comparable among the two groups. There was no difference in the size and age of individuals at first reproduction. In females, the fecundity (number of eggs laid at first reproduction) was comparable between the smaller and larger group frogs. The present study revealed no significant influence of metamorphic size on adult traits in the tropical year-round breeding frog, E. cyanophlyctis and that the juveniles compensate for their smaller size at metamorphosis during their terrestrial life.
机译：已知具有两相性生活模式的两栖动物的变体大小会影响成人的健康状况。为了检验热带无核果是否属实，在连续繁殖的热带青蛙Euphlyctis cyanophlyctis中研究了变体大小对未来存活率，生长速度，年龄和大小的影响。在自然界中，变态时（尾巴完全消失; Gosner阶段46）时的种群内大小差异很大（鼻孔长度（SVL）为22-30毫米）。对在室外围栏中饲养的一组青蛙的生长速度和初次繁殖年龄的确定分析表明，小青蛙和大青蛙的SVL增长速率仅在开始时有所不同，但随后可比。另一方面，从第一个月开始到实验结束，两组的体重增加率相当。两组之间的死亡率也相当。初次繁殖时个体的大小和年龄没有差异。在雌性中，雌雄同体的繁殖力（第一次繁殖时产下的卵数）在较大和较小的组蛙之间可比。目前的研究表明，变态大小对热带全年繁殖的青蛙蓝藻E. cyanophlyctis的成年性状没有显着影响，并且幼虫在其陆地生活中补偿了变态时较小的大小。

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