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Dissertation Research: Patterns, Mechanisms and Consequences of Oviposition Behavior for Recruitment of the Mayfly, Baetis Bicaudatus

论文研究：蜉蝣Baetis Bicaudatus的产卵行为的模式、机制和后果

基本信息

批准号：
0206095
负责人：
Barbara Peckarsky
金额：
$ 1万
依托单位：
Cornell Univ - State: AWDS MADE PRIOR MAY 2010
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2002
资助国家：
美国
起止时间：
2002-05-01 至 2004-04-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206095&HistoricalAwards=false
关键词：
Dissertation Research Patterns Mechanisms Consequences

项目摘要

Recruitment determines the initial density of populations, and may thereby criticallyinfluence their abundance. Little is known about recruitment of aquatic insects and itsinfluence on the abundance of larvae. We combine surveys, mechanistic and large-scaleexperiments in natural streams to determine the patterns and mechanisms of recruitmentof new individuals to populations of the mayfly Baetis bicaudatus, and how small andlarge scale variation in recruitment interact to influence abundance of larvae.Methods include observations of patterns of oviposition, and field experiments tounderstand the mechanisms and fitness consequences of oviposition behavior. Extensivesurveys relate patterns of recruitment to temporal and spatial variation in mayfly larvalabundance. A large-scale field experiment manipulating the availability of ovipositionsites in 12 natural streams will test whether populations of Baetis larvae are recruitmentlimited.This proposal will make significant and unique contributions to the understanding ofrecruitment of aquatic insect populations, and its influence on subsequent insectabundance. Proposed research will also generate models for predicting how mechanisms(i.e. oviposition behavior) affect patterns of populations at local and regional scales.Furthermore, it will provide a foundation for understanding population dynamics ofaquatic insects important to designing realistic and relevant conservation programs.

招募决定了种群的初始密度，从而可能对其丰度产生重大影响。关于水生昆虫的招募及其对幼虫丰度的影响知之甚少。我们将自然溪流中的调查、机制和大规模实验结合起来，以确定蜉蝣Baetis bicaudatus种群招募新个体的模式和机制，以及招募中的小规模和大规模变化如何相互作用以影响幼虫的丰度。方法包括观察产卵模式和现场实验，以了解蜉蝣Baetis bicaudatus的机制和适应性后果产卵行为。广泛的调查将招募模式与蜉蝣幼虫数量的时间和空间变化联系起来。一项操纵 12 条自然溪流中产卵地点可用性的大规模田间实验将测试 Baetis 幼虫的种群数量是否受到限制。该提案将为了解水生昆虫种群的招募及其对随后昆虫丰度的影响做出重大而独特的贡献。拟议的研究还将生成模型，用于预测机制（即产卵行为）如何影响当地和区域规模的种群模式。此外，它将为了解水生昆虫的种群动态提供基础，这对于设计现实和相关的保护计划非常重要。