Phylogeny and Evolution of the Jumping Spider Genus Habronattus

跳蛛属的系统发育和进化

• 批准号: 9707368
• 负责人: Wayne Maddison
• 金额: $ 12.5万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9707368&HistoricalAwards=false
• 关键词: Phylogeny; Evolution; Jumping; Spider; Genus

9707368 Maddison The proposed work is a reconstruction of the phylogenetic history of jumping spiders of the genus Habronattus, a primarily North American group of 95 described species. DNA sequence data from about 70 species will be gathered for at least three genes, which together with morphological data will be analyzed to reconstruct the phylogenetic relationships of the species. Then, using the phylogeny, patterns of character change in chromosomes and behaviors will be studied. Available data indicate that an XXXY chromosome system has arisen several times independently. One question to be studied is whether shifts in chiasma localization released a constraint to allow repeated derivations of the XXXY system. Another focus is courtship behavior. While females are cryptically colored, males of many species have elaborate and colorful markings and structures, and engage in complex behaviors during courtship. Behavioral data will be analyzed on the phylogeny to seek patterns in the character changes by which one complex style of courtship is derived from another, and in distributions of colors and motions in male behavior. These studies will advance our understanding of chromosomal and behavioral change, and hence of the forces and constraints underlying diversification.

[707368] Maddison提议的工作是对Habronattus属跳蛛的系统发育历史的重建，Habronattus属跳蛛主要是北美的一组，有95种已描述的物种。将收集约70个物种的至少3个基因的DNA序列数据，并结合形态学数据进行分析，重建物种的系统发育关系。然后，利用系统发育，研究染色体和行为的特征变化模式。现有资料表明，一个XXXY染色体系统曾多次独立出现。需要研究的一个问题是，交错定位的变化是否释放了一个约束，从而允许XXXY系统的重复推导。另一个重点是求偶行为。虽然雌性有神秘的颜色，但许多物种的雄性有精心设计的彩色标记和结构，并在求偶期间进行复杂的行为。行为数据将在系统发育上进行分析，以寻找一种复杂的求爱方式衍生出另一种求爱方式的性格变化模式，以及雄性行为中颜色和动作的分布。这些研究将促进我们对染色体和行为变化的理解，从而促进我们对多样性背后的力量和限制的理解。