Larval Dispersal and Retention Among Sub-populations of Coral Reef Fishes: A Multi-Technique Approach

珊瑚礁鱼类亚群中幼虫的扩散和保留:多种技术方法

基本信息

  • 批准号:
    0928442
  • 负责人:
  • 金额:
    $ 79万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2010
  • 资助国家:
    美国
  • 起止时间:
    2010-01-01 至 2013-09-30
  • 项目状态:
    已结题

项目摘要

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Population connectivity, the degree to which geographically-separated groups are linked by dispersal, is a critical parameter in the dynamics of marine populations. Connectivity rates determine colonization patterns of new habitats, the resiliency of populations to harvest, and the design of networks of No Take Marine Reserves (NTMRs). Quantifying exchange rates in marine organisms is extremely difficult because natal origins of adults are almost invariably unknown. This lack of knowledge is primarily due to the difficulty of conducting mark-recapture studies in species with large numbers of small pelagic offspring that suffer high initial mortality rates. This project will continue a multi-technique approach combining mass-marking of fish embryos using TRAnsgenerational Isotope Labeling (TRAIL) of otoliths and paternity analyses based on hypervariable microsatellite DNA markers to measure dispersal distances of coral reef fishes. Population connectivity will be estimated for two species (Amphiprion percula and Chaetodon vagabundus) in Kimbe Bay, Papua New Guinea. Coral reef organisms are usually distributed across a mosaic of reefs that are sometimes separated by the ocean. It has been presumed that at small scales, reefs must be open populations, with significant exchange of larvae among neighboring reefs. At larger scales, populations must effectively be closed, with late-stage larvae returning to the same population as their parents. The scale over which this transition takes place is unknown. Recent evidence suggests that ecologically significant self-recruitment may occur at scales of individual reefs or islands. If accurate, these findings have important implications for management strategies for marine species, including the design of networks of NTMRs, because knowledge of dispersal distances determines the scale over which populations can be completely protected. It also determines the appropriate spacing of reserves to allow protected populations to replenish adjacent fished areas. This project will quantify population connectivity of coral reef fishes in Kimbe Bay, Papua New Guinea and broaden the spatial scale from examining the fate of larvae spawned at a single location (Kimbe Island) to examining connectivity among 5 designated NTMRs.The project will strengthen international collaborations among researchers from the US, Australia and France with expertise in otolith geochemistry, reef fish ecology, and population genetics. This collaboration includes the training of a graduate student. Research from the project will also be incorporated into courses taught by the PI. The research is highly relevant to ongoing conservation efforts in Kimbe Bay (led by The Nature Conservancy) and a new and ambitious six-nation effort to protect and manage coral reefs within the Coral Triangle. A major focus of the Coral Triangle Initiative will be ecosystem-based management and the design and implementation of a network of NTMRs. Estimates of population connectivity will, therefore, be vital to establish a strong scientific basis for management efforts.
该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。种群连通性,即地理上分离的群体通过扩散联系在一起的程度,是海洋种群动态的一个关键参数。连通率决定了新栖息地的殖民模式,种群对收获的弹性,以及禁止捕捞海洋保护区(NTMR)网络的设计。对海洋生物中的交换率进行量化是极其困难的,因为成年生物纳塔尔起源几乎总是未知的。缺乏这方面的知识主要是由于难以对有大量小型中上层后代的物种进行标记-再捕获研究,这些物种的初始死亡率很高。该项目将继续采用多技术方法,结合使用耳石的TRAnsgenerational Isotope Labeling(TRAIL)对鱼类胚胎进行大规模标记和基于高变微卫星DNA标记的亲子关系分析,以测量珊瑚礁鱼类的扩散距离。人口连接将估计两个物种(双锯鱼percula和Chaetodon vagabundus)在金贝湾,巴布亚新几内亚。珊瑚礁生物通常分布在珊瑚礁的马赛克上,有时被海洋分开。据推测,在小尺度下,珊瑚礁必须是开放的种群,相邻珊瑚礁之间的幼虫交换显着。在更大的尺度上,种群必须有效地封闭,晚期幼虫返回到与其父母相同的种群。这种转变的规模尚不清楚。最近的证据表明,具有生态意义的自我补充可能发生在个别珊瑚礁或岛屿的规模。如果准确的话,这些研究结果对海洋物种的管理战略,包括设计网络的NTMR有重要的影响,因为传播距离的知识决定了种群可以得到完全保护的规模。它还确定保护区的适当间隔,使受保护种群能够补充邻近的捕鱼区。该项目将量化巴布亚新几内亚金贝湾珊瑚礁鱼类种群的连通性,并将空间尺度从研究单一地点(金贝岛)产卵的幼虫的命运扩大到研究5个指定的NTMR之间的连通性。该项目将加强来自美国、澳大利亚和法国的研究人员在耳石地球化学、珊瑚礁鱼类生态学和种群遗传学方面的国际合作。这项合作包括培训一名研究生。该项目的研究也将纳入PI教授的课程。这项研究与金贝湾正在进行的保护工作(由大自然保护协会领导)以及一项新的雄心勃勃的六国保护和管理珊瑚三角区内珊瑚礁的努力高度相关。珊瑚三角区倡议的一个主要重点将是基于生态系统的管理以及设计和实施一个国家监测报告网络。因此,对人口连通性的估计对于为管理工作奠定坚实的科学基础至关重要。

项目成果

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Simon Thorrold其他文献

Simon Thorrold的其他文献

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{{ truncateString('Simon Thorrold', 18)}}的其他基金

U.S.-Panama Workshop: Charting the Future of Environmental Studies at the Liquid Jungle Laboratory, Panama City, January, 2012
美国-巴拿马研讨会:在液体丛林实验室描绘环境研究的未来,巴拿马城,2012 年 1 月
  • 批准号:
    1132282
  • 财政年份:
    2011
  • 资助金额:
    $ 79万
  • 项目类别:
    Standard Grant
Resolving Migratory Connectivity of Basking Sharks (Cetorhinus maximus) in the Western Atlantic Ocean: Integrating Novel Geochemical Tracers with Satellite Archival Tags
解决西大西洋姥鲨(Cetorhinus maximus)的迁徙连通性:将新型地球化学示踪剂与卫星档案标签相结合
  • 批准号:
    0825148
  • 财政年份:
    2008
  • 资助金额:
    $ 79万
  • 项目类别:
    Standard Grant
Collaborative Research: Centennial Scale Records of the Atlantic Multi-decadal Oscillation
合作研究:大西洋数十年振荡的百年尺度记录
  • 批准号:
    0823268
  • 财政年份:
    2008
  • 资助金额:
    $ 79万
  • 项目类别:
    Continuing Grant
SGER: A New Method for Trophic Reconstructions of Marine Fishes From d13C and d15N Analyses of Individual Amino Acids in Otoliths
SGER:通过耳石中单个氨基酸的 d13C 和 d15N 分析重建海洋鱼类营养的新方法
  • 批准号:
    0750894
  • 财政年份:
    2007
  • 资助金额:
    $ 79万
  • 项目类别:
    Standard Grant
Larval Dispersal and Retention Among Sub-populations of Coral Reef Fishes: A Multi-Technique Approach
珊瑚礁鱼类亚群中幼虫的扩散和保留:多种技术方法
  • 批准号:
    0424688
  • 财政年份:
    2004
  • 资助金额:
    $ 79万
  • 项目类别:
    Standard Grant
CAREER: Connectivity Among Marine Fish Populations: Emphasizing Ecological Links Between Estuaries and the Coastal Ocean through an Integrated Program of Interdisciplinary Res/Educ
职业:海洋鱼类种群之间的连通性:通过跨学科研究/教育综合计划强调河口和沿海海洋之间的生态联系
  • 批准号:
    0134998
  • 财政年份:
    2002
  • 资助金额:
    $ 79万
  • 项目类别:
    Continuing Grant
Collaborative Research: Calibration of Sclerosponges as Proxy Indicators of Environmental Conditions
合作研究:作为环境条件代理指标的硬化海绵的校准
  • 批准号:
    0136841
  • 财政年份:
    2002
  • 资助金额:
    $ 79万
  • 项目类别:
    Standard Grant
Acquisition of a Laser Ablation High Resolution Inductively Coupled Plasma Mass Spectrometer for Isotopic and Elemental Analyses of Calcified Structures in Aquatic Organisms
购买激光烧蚀高分辨率电感耦合等离子体质谱仪,用于水生生物钙化结构的同位素和元素分析
  • 批准号:
    0215905
  • 财政年份:
    2002
  • 资助金额:
    $ 79万
  • 项目类别:
    Standard Grant
Collaborative Research: Inter-Annual to Century-Scale Climate Records from the Tropical Atlantic: Coral Based Reconstructions
合作研究:热带大西洋年际至世纪尺度的气候记录:基于珊瑚的重建
  • 批准号:
    0196344
  • 财政年份:
    2001
  • 资助金额:
    $ 79万
  • 项目类别:
    Continuing Grant
Collaborative Research: Inter-Annual to Century-Scale Climate Records from the Tropical Atlantic: Coral Based Reconstructions
合作研究:热带大西洋年际至世纪尺度的气候记录:基于珊瑚的重建
  • 批准号:
    0081175
  • 财政年份:
    2000
  • 资助金额:
    $ 79万
  • 项目类别:
    Continuing Grant

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合作研究:NSFGEO-NERC:利用群体遗传模型解析和预测海洋幼虫的扩散内核
  • 批准号:
    2334798
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    2024
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Collaborative Research: NSFGEO-NERC: Using population genetic models to resolve and predict dispersal kernels of marine larvae
合作研究:NSFGEO-NERC:利用群体遗传模型解析和预测海洋幼虫的扩散内核
  • 批准号:
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How does EFR3 control insulin-stimulated plasma membrane dispersal of GLUT4?
EFR3 如何控制胰岛素刺激的 GLUT4 质膜扩散?
  • 批准号:
    BB/X005178/1
  • 财政年份:
    2023
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RAPID: Storm layer deposition, contaminant deliver and dispersal from Hurricane Ian (Sept. 2022) along SW Florida estuaries and fringing mangroves
快速:飓风伊恩(2022 年 9 月)沿佛罗里达州西南部河口和边缘红树林的风暴层沉积、污染物输送和扩散
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CAREER: The effects of spatial structure and heterogeneity on local adaptation, diversification, and dispersal evolution: Experimental tests and statistical models
职业:空间结构和异质性对局部适应、多样化和分散进化的影响:实验测试和统计模型
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