...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Influence of maturity condition and habitat type on food resources utilization by Octopus tehuelchus in Atlantic Patagonian coastal ecosystems
【24h】

Influence of maturity condition and habitat type on food resources utilization by Octopus tehuelchus in Atlantic Patagonian coastal ecosystems

机译：大西洋巴塔哥尼亚沿海生态系统的成熟状况和生境类型对章鱼食物资源利用的影响

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

This study evaluates differences in Octopus tehuelchus diet in relation to sex and maturity condition (juvenile, mature, post-spawning) in two contrasting habitat types (sandy vs. rocky). Muscle of O. tehuelchus and of its associated food sources were analyzed for delta C-13 and delta N-15. There was no correlation between delta C-13 or delta N-15 and octopus size. delta C-13 and delta N-15 values were similar between sexes indicating similar diets. The Bayesian mixing model (MixSIAR) showed that the proportional contribution of the sources varied with the maturity condition of octopuses, and between habitat types. Our results show differences in the proportions of alternative prey in the diet of O. tehuelchus related to their physiological condition and the habitat characteristics. The differential food source utilization may be related to differential prey energy contribution and could explain the differences in the growth pattern and life span, as well as in the reproductive traits and recruitment success of O. tehuelchus in sandy and rocky habitats. Our results highlight the importance of considering such differences in octopus diet, since they may have consequences for population dynamics, but also in the species' trophic niche and its functional role in communities.
机译：这项研究评估了两种不同栖息地类型（沙地与多岩石）的八爪鱼饮食在性别和成熟度（幼稚，成熟，产卵后）方面的差异。分析了O. tehuelchus肌肉及其相关食物来源的δC-13和δN-15。章鱼大小与C-13或N-15之间没有相关性。性别之间的ΔC-13和ΔN-15值相似，表明饮食相似。贝叶斯混合模型（MixSIAR）表明，这些源的比例贡献随着章鱼的成熟条件以及生境类型的不同而变化。我们的研究结果表明，te.elhuschus日粮中替代猎物的比例与其生理条件和生境特征有关。不同的食物来源利用可能与不同的猎物能量贡献有关，并可以解释沙丘和岩石生境中美洲雪hu的生长方式和寿命以及繁殖性状和募集成功的差异。我们的结果凸显了考虑章鱼饮食中这种差异的重要性，因为它们可能会对种群动态产生影响，而且还会影响该物种的营养生态位及其在社区中的功能作用。

著录项

  • 来源
    《Marine biology》 |2016年第8期|179.1-179.10|共10页
  • 作者

    Storero L. P.; Botto F.; Narvarte M. A.; Iribarne O. O.;

  • 作者单位

    Consejo Nacl Invest Cient & Tecn, Inst Biol Marina & Pesquera Almirante Storni, San Antonio Oeste, Argentina|Univ Nacl Comahue, Escuela Super Ciencias Marinas, San Antonio Oeste, Argentina;

    Consejo Nacl Invest Cient & Tecn, IIMyC, Mar Del Plata, Buenos Aires, Argentina;

    Consejo Nacl Invest Cient & Tecn, Inst Biol Marina & Pesquera Almirante Storni, San Antonio Oeste, Argentina|Univ Nacl Comahue, Escuela Super Ciencias Marinas, San Antonio Oeste, Argentina;

    Consejo Nacl Invest Cient & Tecn, IIMyC, Mar Del Plata, Buenos Aires, Argentina;

  • 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