• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oceanographic Literature Review >A diver operated stereo-video approach for characterizing reef fish spawning aggregations: The Galapagos Marine Reserve as case study
【24h】

A diver operated stereo-video approach for characterizing reef fish spawning aggregations: The Galapagos Marine Reserve as case study

机译：用于表征礁鱼产卵聚集的潜水员操作立体视频方法：加拉帕戈斯海洋储备为案例研究

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

The alarming decline of spawning aggregations across the world highlights the need to improve their long-term monitoring and protection. Here, we examined the ability of diver operated stereo-video to characterize reef fish spawning aggregations, using an opportunistic encounter with the first spawning aggregation of the Mexican hogfish, Bodianus diplotaenia, recorded in the Galapagos Marine Reserve. We aimed to provide estimates of total density, length and reproductive behaviour, using quantitative surveys and 3D representation of the spawning event. 3D scenes of aggregating fish in relation to reef substrate were produced to compute distances between individuals (of the same and different sex), and between individuals and the substrate. Males swam significantly higher in the water column and further away from each other when compared to females, which displayed sociable behaviour closer to the bottom. The mean fork length of males (39.79 ± 6.98 cm) was nearly twice the size of females (24.14 ± 5.39 cm). We show that diver operated stereo-video can provide accurate baseline measures of fish length, density and reproductive behaviours. Our study offers a new method to characterize fish mating systems, and contributes to expanding the range of easily repeatable low-impact tools for the long-term monitoring of spawning events.
机译：世界各地产卵聚集的令人震惊的衰落突出了改善其长期监测和保护的必要性。在这里，我们研究了潜水员操作立体视频的能力，以表征珊瑚鱼产卵聚集，利用与墨西哥霍格芬，毛皮鱼类的第一次产卵聚集在加拉帕戈斯海洋保护区中录制的机会遭遇。我们的目标是使用产卵事件的定量调查和3D表示提供总密度，长度和生殖行为的估计。产生与Reef底物相关的聚集鱼的3D场景以计算个体（相同和不同性别）之间的距离，以及个体和基材之间的距离。与女性相比，水柱的男性在水柱上显着高得多，彼此相比，这与较近底部更接近底部的贸易行为。均值的平均叉长度（39.79±6.98厘米）几乎是女性大小的两倍（24.14±5.39厘米）。我们展示潜水员操作的立体视频可以提供精确的鱼长，密度和生殖行为的基线测量。我们的研究提供了一种新方法来表征鱼交配系统，有助于扩展易于重复的低冲击工具范围，以便长期监控产卵事件。

著录项

  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2203-2203|共1页
  • 作者

    E. Rastoin- Laplane; J. Goetze; E.S. Harvey;

  • 作者单位

    School of Molecular and Life Sciences Curtin University Bentley Campus WA 6485 Australia;

    School of Molecular and Life Sciences Curtin University Bentley Campus WA 6485 Australia;

    School of Molecular and Life Sciences Curtin University Bentley Campus WA 6485 Australia;

  • 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
  • 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