...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Canadian Journal of Zoology >Oviposition-site selection by the toad Melanophryniscus rubriventris in an unpredictable environment in Argentina
【24h】

Oviposition-site selection by the toad Melanophryniscus rubriventris in an unpredictable environment in Argentina

机译：在阿根廷无法预测的环境中，蟾蜍Melanophryniscus rubriventris的产卵位选择

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

Oviposition-site selection plays an important role in the reproductive success of amphibians. In unpredictable environments where resources vary within a season, amphibians should select oviposition sites using parameters that can be easily evaluated,or spawn in several ponds to increase offspring survival. Melanophryniscus rubriventris (Vellard, 1947) uses shallow ephemeral ponds in an unpredictable montane-forest environment. During 40 consecutive days, we surveyed potential spawning sites and measured several biotic and abiotic factors to determine if any of these factors influenced breeding-site selection. We also described the spawning behavior of this species. Water temperature and pond level (flooded or not) were significant predictors of whether a pond was used or not. Warmer ponds would permit accelerated development of larvae in habitats where ponds are ephemeral and their presence unpredictable. Because of the short and unpredictable hydroperiods, it will be better to select a pond fullof water instead of evaluating other pond characteristics that can be very variable. Mating pairs spread several egg masses to different sites but in the same pond. This behavior is likely a consequence of pairs avoiding interactions with intruding males and not as a strategy to enhance offspring survival.
机译：产卵部位的选择在两栖动物的繁殖成功中起着重要作用。在资源在一个季节内变化的不可预测的环境中，两栖动物应使用易于评估的参数选择产卵地点，或在多个池塘中产卵以增加后代的存活率。 Melanophryniscus rubriventris（Vellard，1947）在无法预测的山地森林环境中使用浅水临时池。在连续40天中，我们调查了潜在的产卵位点，并测量了几种生物和非生物因素，以确定这些因素是否影响了繁殖地点的选择。我们还描述了该物种的产卵行为。水温和池塘水位（是否充满）是是否使用池塘的重要预测指标。池塘较温和，在池塘为临时性且其存在无法预测的栖息地中，可使幼体加速发育。由于水期短且不可预测，因此最好选择一个装满水的池塘，而不要评估可能变化很大的其他池塘特征。交配对将数个卵团散布到不同的位置，但在同一个池塘中。这种行为可能是成对避免与入侵的雄性互动的结果，而不是作为提高后代存活率的策略。

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