• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology >Food and feeding habits of Octopus insularis in the Veracruz Reef System National Park and confirmation of its presence in the southwest Gulf of Mexico
【24h】

Food and feeding habits of Octopus insularis in the Veracruz Reef System National Park and confirmation of its presence in the southwest Gulf of Mexico

机译：Veracruz Reef System国家公园的八达通症的食物和喂养习惯，并确认其在墨西哥湾西南部的存在

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

Octopuses are active predators that feed on a wide range of prey including crustaceans, fishes, and mollusks. They are important components of coral reef systems and support local and artisanal fisheries in the Gulf of Mexico. Octopus insularis has been found to be one of the most relevant components in catches from the coral reef system of Veracruz in the southwestern Gulf of Mexico, and its role in the ecosystem requires assessment. To corroborate the morphological identification of O. insularis, six octopuses were identified by genetic methods. And to understand the trophic relationships between this octopus species and its prey, 394 octopuses caught during 2016 and 2017 by an artisanal fleet were sampled and their stomach contents analyzed. Results showed that crustaceans are the most frequently consumed group, with the genera Mithraculus and Etisus being the most important in the diet. Fishes, bivalves, and gastropods were identified as uncommon prey items in the diet. Their presence in the stomachs could be related to the movement of this octopus outside of the coral reef. Considering that our samples were of medium- and large-sized individuals, cannibalism could be discarded for O. insularis in this size range in the Veracruz reef system. These findings suggest a generalist and opportunistic predation of O. insularis on the most abundant and available prey in the study area, namely the crustaceans. These represents an effective transfer of biomass from the low trophic levels to top predators in the coral reef system.
机译：章鱼是活跃的捕食者，饲养各种猎物，包括甲壳类动物，鱼类和软体动物。它们是珊瑚礁系统的重要组成部分，并在墨西哥湾的地方支持当地和手工渔业。已被发现八达通题是墨西哥湾西南部Veracruz珊瑚礁系统中最相关的组件之一，其在生态系统中的作用需要评估。为了证实O. Inularis的形态学鉴定，通过遗传方法确定六个章节。为了了解这一章鱼物种与其猎物之间的营养性关系，2016年和2017年由手工队队伍捕获的394次章鱼被取样，并分析了胃内容物。结果表明，甲壳类动物是最常见的群体，岩石曲囊和Etisus是饮食中最重要的。鱼类，双纤维和胃食偶是饮食中罕见的猎物物品。他们在胃中的存在可能与珊瑚礁外的八达通的运动有关。考虑到我们的样品是中型和大尺寸的个体，可以在Veracruz Reef系统中丢弃在这个尺寸范围内的O. Insularis的摄入同学。这些调查结果表明O. Onularis对学习区中最丰富和可用的猎物的一般和机会掠夺，即甲壳类动物。这些表示生物质的生物质从低繁殖水平到珊瑚礁系统中的顶部捕食者。

著录项

相似文献

  • 外文文献
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