Collaborative Research: Reproductive Ecology in the Blue Crab, Callinectes Sapidus
合作研究:蓝蟹 Callinectes Sapidus 的生殖生态学
基本信息
- 批准号:9711843
- 负责人:
- 金额:$ 10.2万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:1998
- 资助国家:美国
- 起止时间:1998-02-15 至 2002-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The investments male animals make in reproduction have profound effects on mating systems and individual behaviors. Sperm generally are considered inexpensive relative to eggs, and hence relatively little attention has been devoted to their optimal allocation, or the possibility that they become limiting. In `cheap sperm` species (e.g. broadcast spawners), huge numbers of sperm are produced. Nevertheless, adverse physical factors (e.g. dilution) often lead to sperm limitation and poor fertilization success. Among `expensive sperm` species that invest heavily in mechanisms to increase the reliability of sperm transfer (e.g., courtship, internal fertilization), sperm limitation is more likely to be caused by factors that hinder successful mating. These biological factors, acting before sperm are emitted, are subject to natural selection and provide evidence of evolutionary principles. To understand how individual behaviors of males affect population-level processes, the PIs propose to study an `expensive sperm` species, the blue crab (Callinectes sapidus). They have chosen two widely-separated study sites in the crabs' latitudinal range, which impose very different conditions on the mating system. High-latitude (Chesapeake Bay) females have only short reproductive seasons and, unless they live very long, can produce only a few broods. Low-latitude (Florida) females can produce as many as 11 broods/year in long reproductive seasons. The probability of sufficient sperm being available to realize full potential fecundity in these two environments probably is quite different. Males are subject to disproportionate fishery pressure, especially in Chesapeake Bay. They thus are participants in a large-scale experiment that we propose to exploit to better understand sperm allocation and limitation at the population level. The PIs have strong preliminary data indicating that in Chesapeake Bay (high latitude, heavily fished), female spermathecae receive significantly less sperm, and male vasa deferentia are significantly more depleted, than in Florida where fishing pressure is lower. At Chesapeake Bay and Florida sites, biotelemetry will verify where pairing and mating occur; field sampling will reveal the ratios of mature males to receptive females in mating habitats and how much sperm those males have to transfer. Laboratory and field experiments will test the effects of male size and mating history on amount of sperm transferred and on competition for mates, whether a subset of sperm-depleted males might dominate mating, and how many eggs/broods can be fertilized by a given amount of sperm.
雄性动物在繁殖方面的投资对交配系统和个体行为有着深远的影响。 精子通常被认为相对于卵子来说是便宜的,因此相对较少关注它们的最佳分配,或者它们成为限制的可能性。 在“廉价精子”物种中(如广布产卵者),产生大量精子。 然而,不利的物理因素(如稀释)往往会导致精子限制和受精成功率低。 在“昂贵的精子”物种中,大量投资于提高精子移植可靠性的机制(例如,求偶、内部受精),精子限制更可能是由阻碍成功交配的因素引起的。 这些生物因素在精子排出之前起作用,受到自然选择的影响,并为进化原则提供了证据。 为了了解雄性个体的行为如何影响种群水平的过程,PI建议研究一种“昂贵的精子”物种,蓝蟹(Callinectes sapidus)。 他们在螃蟹的纬度范围内选择了两个相距很远的研究地点,这对交配系统产生了非常不同的条件。 高纬度地区(切萨皮克湾)的雌性只有很短的繁殖季节,除非它们活得很长,否则只能生产很少的育雏。 低纬度(佛罗里达)的女性可以产生多达11窝/年在漫长的生殖季节。 在这两种环境中,有足够的精子来实现完全潜在的生育能力的可能性可能有很大不同。 雄性受到不成比例的渔业压力,特别是在切萨皮克湾。 因此,他们是一个大规模实验的参与者,我们建议利用这个实验来更好地了解精子在人群水平上的分配和限制。 PI有强有力的初步数据表明,在切萨皮克湾(高纬度,捕鱼量大),女性受精囊收到的精子明显较少,男性输精管明显更枯竭,比在佛罗里达捕鱼压力较低。 在切萨皮克湾和佛罗里达,生物遥测技术将验证配对和交配发生的地方;现场采样将揭示交配栖息地中成熟雄性与接受雌性的比例以及这些雄性必须转移多少精子。 实验室和田间实验将测试雄性大小和交配历史对转移的精子量和对配偶的竞争的影响,精子耗尽的雄性的子集是否可能主导交配,以及给定数量的精子可以使多少卵/窝受精。
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)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Anson Hines其他文献
Anson Hines的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Anson Hines', 18)}}的其他基金
FSML: SERC Visiting Scientist Cottages
FSML:SERC 访问科学家小屋
- 批准号:
2039743 - 财政年份:2021
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative Research: A Field Test of Source-Sink Dynamics in Marine System: Linking Recruitment, Dispersal and Post-Settlement Processes in Space and Time
合作研究:海洋系统源汇动力学的现场测试:在空间和时间上连接补充、扩散和后沉降过程
- 批准号:
9730923 - 财政年份:1998
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Complex Predator-Prey Interactions in Marine Soft-Bottom Communities: Crabs, Clams and Patch Dynamics
海洋软底群落中复杂的捕食者-猎物相互作用:螃蟹、蛤和斑块动力学
- 批准号:
9000483 - 财政年份:1990
- 资助金额:
$ 10.2万 - 项目类别:
Continuing Grant
相似国自然基金
Research on Quantum Field Theory without a Lagrangian Description
- 批准号:24ZR1403900
- 批准年份:2024
- 资助金额:0.0 万元
- 项目类别:省市级项目
Cell Research
- 批准号:31224802
- 批准年份:2012
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Cell Research
- 批准号:31024804
- 批准年份:2010
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Cell Research (细胞研究)
- 批准号:30824808
- 批准年份:2008
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Research on the Rapid Growth Mechanism of KDP Crystal
- 批准号:10774081
- 批准年份:2007
- 资助金额:45.0 万元
- 项目类别:面上项目
相似海外基金
Collaborative Research: Does Cytonuclear Coevolution Drive Reproductive Isolation? Dissecting the Architecture of Genetic Incompatibility Across a Species Range
合作研究:细胞核协同进化是否会导致生殖隔离?
- 批准号:
2140190 - 财政年份:2022
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative Research: Does Cytonuclear Coevolution Drive Reproductive Isolation? Dissecting the Architecture of Genetic Incompatibility Across a Species Range
合作研究:细胞核协同进化是否会导致生殖隔离?
- 批准号:
2140189 - 财政年份:2022
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative Research: Reproductive heterogeneity in the structured coalescent framework
合作研究:结构化合并框架中的生殖异质性
- 批准号:
2109989 - 财政年份:2021
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative Research: Reproductive heterogeneity in the structured coalescent framework
合作研究:结构化合并框架中的生殖异质性
- 批准号:
2109990 - 财政年份:2021
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative Research: The saboteur's tools: mechanisms for host reproductive manipulation by the bacterial arthropod endosymbiont Cardinium hertigii
合作研究:破坏者的工具:细菌节肢动物内共生体 Cardinium hertigii 操纵宿主生殖的机制
- 批准号:
2002934 - 财政年份:2020
- 资助金额:
$ 10.2万 - 项目类别:
Continuing Grant
Collaborative Research: The saboteur's tools: mechanisms for host reproductive manipulation by the bacterial arthropod endosymbiont Cardinium hertigii
合作研究:破坏者的工具:细菌节肢动物内共生体 Cardinium hertigii 操纵宿主生殖的机制
- 批准号:
2002987 - 财政年份:2020
- 资助金额:
$ 10.2万 - 项目类别:
Continuing Grant
Collaborative Research: The saboteur's tools: mechanisms for host reproductive manipulation by the bacterial arthropod endosymbiont Cardinium hertigii
合作研究:破坏者的工具:细菌节肢动物内共生体 Cardinium hertigii 操纵宿主生殖的机制
- 批准号:
2003107 - 财政年份:2020
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative Research: RoL: Rapid Evolution of Reproductive Isolation via Hybrid Seed Lethality in Mimulus
合作研究:RoL:通过混合种子致死率实现生殖隔离的快速进化
- 批准号:
1856158 - 财政年份:2019
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative Research: RoL: Rapid Evolution of Reproductive Isolation via Hybrid Seed Lethality in Mimulus
合作研究:RoL:通过混合种子致死率实现生殖隔离的快速进化
- 批准号:
1856223 - 财政年份:2019
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant
Collaborative research: The Evolutionary Genetics of Pollen-Pistil Incompatibility and Reproductive Isolation in Zea mays
合作研究:玉米花粉雌蕊不相容性和生殖隔离的进化遗传学
- 批准号:
1753632 - 财政年份:2019
- 资助金额:
$ 10.2万 - 项目类别:
Standard Grant