The Radiation of Sponge-Dwelling Shrimp: A New Model System for the Comparative Analysis of Social Evolution

摘要：J.E.达菲奖DEB 9815785题目：海绵虾的辐射：社会进化比较分析的新系统Eusociality的特点是动物的合作群体，其中大多数成员牺牲个体繁殖，长期以来一直是行为和进化生态学的一个基本悖论。 一个比较的方法来破译的起源eusociality，其中eusocial物种的生态和人口与他们最亲密的非eusocial亲属的对比，是一个潜在的强大的补充，在个人和人口水平的行为研究。 这种比较方法的潜力在很大程度上尚未实现，因为真社会性在动物中很少出现，而且许多起源都很古老。 本计画将重建约40种海棉虾类的系统发生关系，并利用比较的方法，探讨与此族群高级社会组织重复演化相关的生态与人口条件。 拟议的研究的具体目标是产生一个gambarelloides种组的Alpheid虾的分类修订，建立一个强有力的支持基于DNA序列和形态学的组，并使用比较的方法来探索海绵居住的虾生态和社会进化之间的关联。 这项研究将提供一个严格的社会进化的历史和生态学的比较分析，在唯一的海洋动物群体，其中先进的社会组织是已知的。

ABSTRACTPI: J. E. DuffyAward DEB 9815785Title: The radiation of sponge-dwelling shrimp: a new system for the comparative analysis of social evolutionEusociality, characterized by cooperative colonies of animals in which most members sacrifice individual reproduction, has long presented a fundamental paradox for behavioral and evolutionary ecology. A comparative approach to deciphering the origins of eusociality, in which the ecology and demographics of eusocial species are contrasted with those of their closest non-eusocial relatives, represents a potentially powerful complement to behavioral studies at the individual and population levels. The potential of this comparative approach remains largely unrealized because eusociality has arisen only rarely among animals, and many of these origins are ancient. This project will reconstruct the phylogenetic relationships among the approximately 40 species of sponge-dwelling alpheid shrimps, and use comparative methods to explore the ecological and demographic conditions associated with the repeated evolution of advanced social organization in this group. Specific objectives of the proposed research are to produce a taxonomic revision of the gambarelloides species-group of alpheid shrimps, establish a strongly supported phylogeny for the group based on DNA sequences and morphology, and use comparative methods to explore the association between ecology and social evolution in sponge-dwelling shrimps. This research will provide a rigorous comparative analysis of the history and ecology of social evolution in the only marine animal group in which advanced social organization is known.