DISSERTATION RESEARCH: Female Influences on Sperm Storage and Use in Two Species of Tephritid Flies with Divergent Mating Systems

论文研究：雌性对两种具有不同交配系统的实蝇的精子储存和使用的影响

• 批准号: 0105073
• 负责人: William Rowland
• 金额: $ 0.98万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-01 至 2002-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0105073&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Female; Influences; Sperm

DISSERTATION RESEARCH: Female influences on sperm storage and use in two species of tephritid flies with divergent mating systemsDr. William J. RowlandAnn. H. FritzABSTRACT'Female choice' is a form of sexual selection well documented at the level of precopulatory choice and helps to explain many male traits (e.g. peacock feathers). After or during copulation, however, females may differentially influence the fate of ejaculate from two or more males to affect paternity outcomes. This phenomenon, referred to as 'cryptic female choice' (CFC), is currently under intense investigation because 1) it adds a new dimension to the evolutionary conflict between the sexes, and 2) it changes our views on the degree to which females influence male reproductive success. This study examines the relationship between two species of tephritid flies with divergent mating systems and the potential for female influence on sperm use and storage. One species mates infrequently and has a complex courtship behavior, whereas the other species mates frequently and has minimal courtship behavior. CFC is predicted to be more important in species that exhibit multiple matings with little pre-copulatory choice. This study uses a multi-pronged approach to estimate the presence and degree of female influence on reproductive outcomes by examining sperm storage, mating behavior, neuromuscular control, and paternity outcomes in relation to male characters.

论文研究：女性对两种具有不同交配系统的tephritid果蝇中的精子储存和使用的影响。威廉·J·罗兰南。 H. Fritzabstract'female Choice'是一种在预言选择层面上有据可查的性选择形式，有助于解释许多男性特征（例如孔雀羽毛）。 然而，在交配后或期间，女性可能会差异地影响两名或更多男性的射精命运，以影响亲子关系结果。 这种现象被称为“神秘女性选择”（CFC），目前正在接受激烈的研究，因为1）它为性别之间的进化冲突增加了一个新的维度，而2）它改变了我们对女性影响男性生殖成功程度的看法。这项研究研究了两种tephritid果蝇与交配系统的关系，以及女性对精子使用和储存的影响的潜力。一个物种很少交配，并且具有复杂的求爱行为，而其他物种经常伴侣，并且求爱行为最少。 预计CFC在表现出几乎没有填充前选择的多个物种中更为重要。这项研究使用多管齐下的方法来估计女性对生殖结果的影响和程度，通过检查精子储存，交配行为，神经肌肉控制和与男性角色有关的亲子关系结果。