CAREER: Sperm Limitation, Sperm Competition, and Sexual Selection in Free Spawning Invertebrates
职业:自由产卵无脊椎动物的精子限制、精子竞争和性选择
基本信息
- 批准号:9702178
- 负责人:
- 金额:$ 49.22万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1997
- 资助国家:美国
- 起止时间:1997-07-01 至 2003-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Because sperm greatly outnumber eggs, evolutionary biologists have long thought that sperm competition is the selective mechanism driving the evolution of gender differences; males are limited by and compete for mating opportunities, while females are not limited by mates and exhibit mate choice. The evidence supporting these ideas come from species with internal fertilization or in situation where sperm are deposited on eggs. However, the ancestral, and still widespread, reproductive strategy is to release eggs and sperm into the environment where the chance of fertilization is much reduced compared to internal fertilization. Under these conditions, low densities of males and sperm can limit female reproductive success. This proposal will investigate how sperm and egg traits influence fertilization rates in the laboratory and ocean, how common sperm limitation and sperm competition are in natural invertebrate populations and how gamete competition can influence the evolution of gender differences in free spawning marine invertebrates. The work will involve laboratory and field experiments, at times using molecular techniques to better understand the evolution of mating systems.
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Don Levitan其他文献
Don Levitan的其他文献
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{{ truncateString('Don Levitan', 18)}}的其他基金
The evolution of gametic compatibility within species and reproductive isolation across species
物种内配子相容性和物种间生殖隔离的演变
- 批准号:
2025492 - 财政年份:2020
- 资助金额:
$ 49.22万 - 项目类别:
Continuing Grant
Contemporary co-evolution of gamete recognition proteins
配子识别蛋白的当代共同进化
- 批准号:
1354272 - 财政年份:2014
- 资助金额:
$ 49.22万 - 项目类别:
Standard Grant
The Consequences of Sperm Availability to the Evolution of Gamete Recognition Proteins
精子可用性对配子识别蛋白进化的影响
- 批准号:
0822626 - 财政年份:2008
- 资助金额:
$ 49.22万 - 项目类别:
Standard Grant
The influence of gamete phenotype, gamete genotype and behavior on reproductive success in broadcast spawning invertebrates
配子表型、配子基因型和行为对广播产卵无脊椎动物繁殖成功的影响
- 批准号:
0241678 - 财政年份:2003
- 资助金额:
$ 49.22万 - 项目类别:
Standard Grant
An Automated DNA Sequencer and Related Equipment for Multidisciplinary Biological Studies at Florida State University
佛罗里达州立大学用于多学科生物学研究的自动 DNA 测序仪和相关设备
- 批准号:
0070316 - 财政年份:2000
- 资助金额:
$ 49.22万 - 项目类别:
Standard Grant
Collaborative Research: Spawning and Fertilization in the Caribbean Coral Montastraea Annularis Sensu Lato
合作研究:加勒比珊瑚 Montastraea Annularis Sensu Lato 的产卵和受精
- 批准号:
9911225 - 财政年份:2000
- 资助金额:
$ 49.22万 - 项目类别:
Standard Grant
Life History Implications for Free Spawning Invertebrates
自由产卵无脊椎动物的生活史意义
- 批准号:
9411986 - 财政年份:1994
- 资助金额:
$ 49.22万 - 项目类别:
Continuing Grant
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