DISSERTATION RESEARCH: Polyandry in Crickets: Disentangling the Genetic Benefits
论文研究:蟋蟀的一妻多夫制:阐明遗传优势
基本信息
- 批准号:0407690
- 负责人:
- 金额:$ 0.93万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2004
- 资助国家:美国
- 起止时间:2004-04-15 至 2007-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Abstract of Proposed Research Project Title: Dissertation Research: Polyandry in crickets: disentangling the genetic benefits Principal Investigator: Scott Kitchener SakalukCo-Principle Investigator: Tracie Marie IvyAlthough mating is often costly, females of many species mate multiple times and with multiple partners, presumably because females accrue benefits that outweigh the costs. Material benefits, such as courtship food gifts, directly increase a female's reproductive success, while genetic benefits indirectly improve a female's success through the performance of her offspring. Recent work involving decorated crickets indicates that females mating multiply produce significantly more surviving offspring than those mating only once, particularly when females mate with multiple partners. Moreover, the data suggest that the increase in offspring survival is due to genetic rather than material benefits. The object of the proposed research is to test two hypotheses regarding the nature of genetic benefits obtained via promiscuous mating in decorated crickets: 1) offspring viability (or sexual attractiveness) is enhanced through paternally-derived genes and 2) females mating with multiple partners increase the probability that their eggs will be fertilized by males with whom they are genetically compatible. These hypotheses will be tested by utilizing a design used frequently in agricultural research, the full diallel cross, which involves all possible crosses among a set of inbred parental lines. If promiscuous mating results in offspring inheriting genes from high-quality males, I predict that females will derive higher fitness by mating with certain males, irrespective of the genetic background of the female. However, if genetic compatibility is most important, I predict that female fitness will be determined by the interaction between paternal and maternal genes. Knowing which of these genetic mechanisms drives female mating preferences is critical to understanding the evolution of animal mating systems.
拟定研究项目摘要 标题:论文研究:蟋蟀中的一妻多夫制:理清遗传效益 首席研究员:Scott Kitchener Sakaluk 联合首席研究员:Tracie Marie Ivy 虽然交配成本通常很高,但许多物种的雌性会多次交配并与多个伙伴交配,大概是因为雌性获得的收益超过了成本。物质利益,例如求偶食物礼物,直接提高女性的生殖成功率,而遗传利益则通过后代的表现间接提高女性的成功率。最近涉及装饰蟋蟀的研究表明,与只交配一次的雌性蟋蟀相比,多次交配的雌性会产生更多的存活后代,特别是当雌性与多个伙伴交配时。此外,数据表明,后代存活率的提高是由于遗传而不是物质利益。这项研究的目的是检验关于装饰蟋蟀通过混交交配获得的遗传利益的本质的两个假设:1)通过父系衍生的基因增强后代的生存能力(或性吸引力);2)与多个伴侣交配的雌性增加了它们的卵子被与它们基因相容的雄性受精的可能性。这些假设将通过利用农业研究中经常使用的设计来检验,即完整的双列杂交,其中涉及一组近交亲本系之间的所有可能的杂交。如果混杂交配导致后代继承优质雄性的基因,我预测雌性将通过与某些雄性交配获得更高的适应性,而不管雌性的遗传背景如何。然而,如果遗传兼容性是最重要的,我预测女性的健康将由父亲和母亲基因之间的相互作用决定。了解这些遗传机制中的哪一个驱动雌性交配偏好对于理解动物交配系统的进化至关重要。
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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Scott Sakaluk其他文献
Scott Sakaluk的其他文献
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{{ truncateString('Scott Sakaluk', 18)}}的其他基金
Experimental Evolution of Insect Nuptial Food Gifts and Female Responses
昆虫结婚食品礼物和女性反应的实验进化
- 批准号:
1654028 - 财政年份:2017
- 资助金额:
$ 0.93万 - 项目类别:
Continuing Grant
Evolution of the chemical composition of insect food gifts
昆虫食品礼品化学成分的演变
- 批准号:
1118160 - 财政年份:2011
- 资助金额:
$ 0.93万 - 项目类别:
Continuing Grant
Self-Referencing as a Universal Mechanism Promoting Polyandry in Insects
自指作为促进昆虫一妻多夫的普遍机制
- 批准号:
0718140 - 财政年份:2007
- 资助金额:
$ 0.93万 - 项目类别:
Continuing Grant
The Scent of Familiarity: Chemosensory Self-Referencing as a Proximate Mechanism Mediating Mate Recognition in Insects
熟悉的气味:化学感应自我参照作为介导昆虫配偶识别的邻近机制
- 批准号:
0543254 - 财政年份:2006
- 资助金额:
$ 0.93万 - 项目类别:
Standard Grant
Cryptic Sexual Conflict in Gift-Giving Insects: Chasing the "Chase-Away"
送礼昆虫中隐秘的性冲突:追逐“赶走”
- 批准号:
0126820 - 财政年份:2002
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$ 0.93万 - 项目类别:
Standard Grant
Sensory Exploitation and Epigamic Selection
感官利用和史诗选择
- 批准号:
9601042 - 财政年份:1996
- 资助金额:
$ 0.93万 - 项目类别:
Continuing Grant
U.S.-Germany Cooperative Research: Paternal Care and MatingEffort in the Beetle, Nicrophorus Vespilloides
美德合作研究:甲虫 Nicrophorus Vespilloides 的父系照顾和交配努力
- 批准号:
9224910 - 财政年份:1993
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$ 0.93万 - 项目类别:
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Intraspecific Variation in Gamete Precedence
配子优先级的种内变异
- 批准号:
9107363 - 财政年份:1991
- 资助金额:
$ 0.93万 - 项目类别:
Standard Grant
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