Biodiversity and speciation in telmatherinid fishes of the Malili-Lake-System (Indonesia)

马利利湖系统（印度尼西亚）的泰马科鱼类的生物多样性和物种形成

• 批准号: 5362532
• 负责人: Dr. Ulrich Schliewen
• 金额: --
• 依托单位: Zoologische Staatssammlung München
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5362532?language=en
• 关键词: Biodiversity; speciation; telmatherinid; fishes; Malili

The endemic ichthyofauna of the Malili-Lake-System (Sulawesi, Indonesia) is comprised of approx. 35 species, which belong to 4 families (Telmatherinidae, Gobiidae, Adrianichthyidae and Hemirhamphidae). The most speciose family, the sailfin-silversides (Telmatherinidae), is characterised by a set of closely related species, which are differentiated inter- and intraspecifically according to sexually and naturally selected characters, e.g. courtship coloration, trophic morphology and adult body size. The combination of these characteristics renders the Malili-Lake-System an extremely uselful but yet untapped model-system for the simultaneous analysis of allopatric and sympatric speciation processes in nature. Therefore, the proposed study is designed (1) to provide baseline-data on morphological and ecological differentiation, phylogenetic relationships and relative age of all endemic species in order to establish the system as an alternative to speciose cichlid radiations for the study of evolution of fish species flocks; (2) to test alternative hypotheses about phylogeographic patterns, rates and degree of genetic, morphological and ecological differentiation within and among the telmatherinid clades and - in an cooperative approach with other researchers - with those from endemic molluscs and crustaceans; (3) to test recent hypotheses about the contribution of natural selection, sexual selection and spatial heterogeneity to speciation processes in telmatherinid flocks.

马里利湖系统（印度尼西亚苏拉威西岛）的特有鱼类区系由大约。35种，隶属于4科（Telmatherinidae、Gobiidae、Adrianichthyidae和Hemirhamphidae）。种类最多的家庭，sailfin-silversides（Telmatherinidae），其特点是由一组密切相关的物种，这是分化间和种内根据性和自然选择的字符，如求偶着色，营养形态和成年人的身体大小。这些特点的结合，使马利里湖系统的一个非常有用的，但尚未开发的模型系统，同时分析在自然界中的异域和同域物种形成过程。因此，本研究的目的是：（1）提供所有特有种的形态和生态分化、系统发育关系和相对年龄的基线数据，以建立一个替代种类慈鲷辐射的系统，用于鱼类种群进化的研究;（2）检验关于遗传多样性的地理格局、遗传率和遗传程度的备择假设，telmatherinid分支内部和之间的形态和生态分化，并与其他研究人员合作，与地方性软体动物和甲壳类动物的形态和生态分化;（3）检验最近关于自然选择、性选择和空间异质性对telmatherinid种群物种形成过程的贡献的假说。