DISSERTATION RESEARCH: Phenotypic plasticity, sexual size dimorphism and Rensch's rule in freshwater turtles.

论文研究：淡水龟的表型可塑性、性别大小二态性和伦施规则。

基本信息

批准号：
0808047
负责人：
Nicole Valenzuela
金额：
$ 1.2万
依托单位：
Iowa State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2008
资助国家：
美国
起止时间：
2008-06-01 至 2010-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0808047&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Phenotypic plasticity sexual

项目摘要

Body size influences animal fecundity, survival, and consequently, population success, particularly in cold-blooded vertebrates such as turtles. Body size can differ between sexes (sexual size dimorphism or SSD) and with latitude, but the exact causes and consequences of such differences in vertebrates remain obscure. This project will explore (1) broad-scale geographic and taxonomic patterns of SSD in turtles and (2) environmental effects on the growth of two turtle species exhibiting contrasting SSD (male-larger versus female-larger SSD) in North and South America. It will advance our understanding of the importance of plastic responses to environmental conditions (temperature, quality and quantity of food availability) in shaping SSD patterns within and across species, and with latitude. This project enhances ISU's international dimension though the training of a Colombian PhD student, and through the collaboration with a Venezuelan NGO (FUDECI). This project has implications for the conservation headstart programs of endangered understudied turtles, and it will build local research capacity. The continued participation of female minority students from the Honors and the Program for Women in Science and Engineering at ISU in this project helps integrating research and education, and enhances the participation of underrepresented groups in science.

身体大小会影响动物的繁殖力，生存，因此人口成功，尤其是在诸如海龟之类的冷血脊椎动物中。性别之间的身体大小（性大小二态性或SSD）和纬度可能会有所不同，但是脊椎动物差异的确切原因和后果仍然晦涩难懂。该项目将探讨（1）乌龟中SSD的广泛地理和分类学模式，以及（2）北美和南美呈现鲜明的SSD（男性龙与女性与女性的SSD）的乌龟生长的环境影响。它将提高我们对塑料响应对环境条件的重要性（温度，质量和食品可用性的数量）在塑造物种内部和纬度方面的SSD模式中的重要性。该项目通过培训哥伦比亚博士生的培训，并通过与委内瑞拉非政府组织（Fudeci）的合作来增强ISU的国际维度。该项目对濒临灭绝的研究乌龟的保护趋势计划具有影响，并将建立当地的研究能力。 ISU在ISU的荣誉和妇女计划中，女性少数民族学生继续参与该项目的科学与工程计划有助于整合研究和教育，并增强了代表性不足的科学的参与。