EVOLUTION OF THE AUDITORY COMPLEX OF MYSTICETI (CETACEA): PHYLOGENETIC AND MORPHOLIGIC EVIDENCE FROM TOOTHED, EDENTULOUS ?CETOTHERE?, AND EXTANT BALEEN WHALES

神秘鲸（鲸类）听觉复合体的进化：来自有齿鲸、无牙鲸和现存须鲸的系统发育和形态学证据

• 批准号: 1146371
• 负责人: Annalisa Berta
• 金额: $ 32.8万
• 依托单位: San Diego State University Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-02-01 至 2015-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1146371&HistoricalAwards=false
• 关键词: EVOLUTION; AUDITORY; COMPLEX; MYSTICETI; CETACEA

This project will reconstruct the evolutionary relationships among baleen whales (mysticetes) spanning 34 million years of Earth History through detailed anatomical comparisons using state of the art technologies, including high resolution CT images. The phenotypic focus is anatomy associated with low frequency hearing. It is unknown if extinct species were as sensitive to low frequency sounds as are their living descendants. Some fossil mysticetes share ear morphology similar to living whales, but hypotheses of when or how many times morphologies associated with auditory physiology evolved throughout mysticete phylogeny remain unresolved and will be studied using phylogenetic comparative methods. The novel morphologic descriptions and analyses produced by the research will add important new information concerning the anatomical structures involved with hearing perception, and it will also lead to an increased comprehension of the effect of human activities on living whales. In addition, the data will form a foundation for newly developed science curricula for public schools through provision of novel data to California educators for use in the classroom.

该项目将通过使用最先进的技术（包括高分辨率 CT 图像）进行详细的解剖比较，重建须鲸（须鲸）之间跨越 3400 万年地球历史的进化关系。表型焦点是与低频听力相关的解剖学。目前尚不清楚灭绝的物种是否像它们现存的后代一样对低频声音敏感。一些化石须鲸的耳朵形态与现生鲸鱼相似，但与听觉生理相关的形态在整个须鲸系统发育过程中何时或多少次进化的假设仍未得到解决，将使用系统发育比较方法进行研究。该研究产生的新颖的形态描述和分析将增加有关与听觉感知有关的解剖结构的重要新信息，并且还将加深对人类活动对活鲸鱼影响的理解。此外，这些数据还将通过向加州教育工作者提供在课堂上使用的新颖数据，为公立学校新开发的科学课程奠定基础。