• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Interactive effects of elevated temperature and CO_2 on foraging behavior of juvenile coral reef fish
【24h】

Interactive effects of elevated temperature and CO_2 on foraging behavior of juvenile coral reef fish

机译：高温和CO_2对珊瑚礁幼鱼觅食行为的交互作用

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

Two of the major threats to coral reefs are increasing sea surface temperature and ocean acidification, both of which result from rising concentrations of atmospheric carbon dioxide (CO_2). Recent evidence suggests that both increased water temperature and elevated levels of dissolved CO_2 can change the behaviors of fishes in ways that reduce individual fitness, however the interacting effects of these variables are unknown. We used a fully factorial experiment to test the independent and interactive effects of temperature (3 levels: 28.5,30, and 31.5 ℃) and pCO_2 (3 levels: averaging 420,530, and 960 μatm) on food consumption and activity level of juvenile anemonefish Amphiprion melanopus (Bleeker 1852). Experimental levels were consistent with current-day ocean conditions and predictions for mid-century and late-century based on atmospheric CO_2 projections. Sibling fish were reared for 21 days from the end of their larval phase in each of the nine treat ments, at which time behavioral observations were conducted. Food consumption and foraging activity de creased at the highest temperature. In isolation, CO_2 level did not significantly affect behavior; however, there was an interaction with temperature. While rearing at high temperature (31.5 ℃) and control (420 μatm) or moderate (530 uatm) CO_2 resulted in a reduction of food consumption and foraging activity, rearing at high temperature and high CO_2 (960 μatm) resulted in an elevation in these behaviors. Maintaining food consumption and foraging activity in high temperature and CO_2 conditions may reduce energy efficiency if the thermal optimum for food assimilation and growth has been exceeded. Maintaining foraging effort might increase predation vulnerability. These results suggest that changes in foraging behaviors caused by the interactive effects of increased SST and CO_2 could have significant effects on the growth and survival of juvenile reef fishes by late century.
机译：珊瑚礁的两个主要威胁是海面温度升高和海洋酸化，这两者都是由于大气中二氧化碳（CO_2）浓度的升高而引起的。最近的证据表明，升高的水温和升高的溶解CO_2水平都可以通过降低个体适应性的方式来改变鱼类的行为，但是这些变量的相互作用影响尚不清楚。我们使用全因子实验来测试温度（3个水平：28.5、30和31.5℃）和pCO_2（3个水平：平均420,530和960μatm）对幼年海葵鱼两栖动物的食物消耗和活动水平的独立和交互作用黑猩猩（Bleker 1852）。实验水平与当前的海洋状况以及根据大气CO_2预测对本世纪中叶和本世纪末的预测相一致。在九种处理方法中的每一种中，从其幼虫阶段结束起将同胞鱼饲养21天，然后进行行为观察。在最高温度下，食物消耗和觅食活动减少。孤立地，CO_2水平并未显着影响行为。但是，温度之间存在相互作用。在高温（31.5℃）和对照（420μatm）或中度（530 uatm）的条件下饲养，可减少食物消耗和觅食活动，而在高温和高CO_2（960μatm）的条件下饲养，则可提高食物摄入量和觅食活动行为。如果超出了食物吸收和生长的最佳温度，则在高温和CO_2条件下保持食物消耗和觅食活动可能会降低能源效率。保持觅食努力可能会增加捕食的脆弱性。这些结果表明，由SST和CO_2增加的相互作用引起的觅食行为的变化可能对世纪后期的幼礁鱼类的生长和存活产生重大影响。

著录项

  • 来源
  • 作者

    Jessica P. Nowicki; Gabrielle M. Miller; Philip L Munday;

  • 作者单位

    School of Marine and Tropical Biology, James Cook University, Townsville, Australia Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia;

    School of Marine and Tropical Biology, James Cook University, Townsville, Australia Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia;

    School of Marine and Tropical Biology, James Cook University, Townsville, Australia Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    anemonefish; feeding behavior; food consumption; global warming; ocean acidification;

    机译：em鱼喂养行为;食物消耗;全球暖化;海洋酸化;

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