...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Latitudinal variation in maternal investment traits of the kelp crab Taliepus dentatus along the coast of Chile
【24h】

Latitudinal variation in maternal investment traits of the kelp crab Taliepus dentatus along the coast of Chile

机译：智利沿海海带蟹Taliepus dentatus母体投资性状的纬度变化

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

Maternal investment (MI), the energy allocated by mothers to offspring, has important effects on the life-history traits of marine organisms. Variation in such traits shows strong correlation with latitude for several marine taxa (Thorson's rule). Large-scale latitudinal variation in MI within a single species suggests population genetic divergence, while temporal changes in MI, rather, reflect plasticity. At higher latitudes (i.e., colder waters), traits associated with MI (brood weight, fecundity, egg volume, and energy content) increase. To identify phenotypic plasticity along a latitudinal gradient in MI traits (brood weight, egg volume, density number, and egg lipid composition), five populations of the kelp crab Taliepus dentatus along the coast of Chile (30 degrees S-42 degrees S) were investigated during the summer (December-February) and winter months (June-August) of 2015-2016. Despite this wide latitudinal range, the sea surface temperature (SST) difference between the northernmost and the southernmost sites was only approximately 2.0 degrees C in winter and 5.5 degrees C in summer. In summer, when latitudinal variation in SST was highest, brood weight, egg density, fecundity, and egg lipids increased with latitude, while egg volume decreased. No trends in MI were observed in winter when the SST gradient was almost non-existent. These results suggest that the relationship between MI and latitude is shaped by temperature rather than being site-specific. The seasonality of latitudinal MI traits also suggests a trade-off between the costs of female maintenance and/or brooding behaviours and MI. When investigating latitudinal and temporal variation in marine brooder MI, the effect of temperature on life-history traits and the associated costs of female brooding should be quantified.
机译：产妇投资（MI）是母亲分配给后代的能量，对海洋生物的生命历史特征具有重要影响。这些特征的变化显示出与几种海洋生物分类的纬度密切相关（Thorson法则）。 MI在单个物种中的大规模纬度变化表明种群遗传差异，而MI的时间变化反而反映了可塑性。在较高的纬度（例如，较冷的水域），与MI相关的性状（繁殖体重，繁殖力，卵量和能量含量）增加。为了确定MI特征（繁殖体重，卵量，密度数和卵脂组成）的纬度梯度上的表型可塑性，在智利海岸（南纬30度至42度）对五个海带蟹Taliepus dentatus进行了研究。在2015年至2016年的夏季（12月至2月）和冬季（6月至8月）进行了调查。尽管纬度范围很广，但最北端和最南端站点之间的海表温度（SST）差异在冬季仅约为2.0摄氏度，在夏季仅为5.5摄氏度。在夏季，当SST的纬度变化最大时，产蛋重，卵密度，繁殖力和卵脂随纬度增加，而卵量减少。当冬季几乎没有SST梯度时，没有观察到MI的趋势。这些结果表明，MI与纬度之间的关系是由温度决定的，而不是特定于地点的。纬度MI特征的季节性还表明，女性维持和/或育雏行为的成本与MI之间需要权衡。在调查海洋育雏器MI的纬度和时间变化时，应量化温度对生活史特征和雌性育雏的相关成本的影响。

著录项

  • 来源
    《Marine biology》 |2018年第2期|37.1-37.12|共12页
  • 作者

    Baldanzi Simone; Storch Daniela; Navarrete Sergio A.; Graeve Martin; Fernandez Miriam;

  • 作者单位

    Pontificia Univ Catolica Chile, Estn Costera Invest Marinas, Santiago, Chile;

    Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Integrat Ecophysiol, Handelshafen 12, D-27570 Bremerhaven, Germany;

    Pontificia Univ Catolica Chile, Estn Costera Invest Marinas, Santiago, Chile;

    Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Chem Ecol, Handelshafen 12, D-27570 Bremerhaven, Germany;

    Pontificia Univ Catolica Chile, Estn Costera Invest Marinas, Santiago, Chile;

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

相似文献

  • 外文文献
  • 中文文献
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