International Research Fellowship Program: Song Evolution and Species-Limits in the Xiphorhynchus Guttatus Species-Complex\(Dendrocolaptidae)

国际研究奖学金计划：剑吻龙物种复合体（Dendrocolaptidae）的歌曲进化和物种限制

• 批准号: 0502407
• 负责人: Curtis Marantz
• 金额: --
• 依托单位: Marantz Curtis A
• 依托单位国家: 美国
• 项目类别: Fellowship
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-12-01 至 2010-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0502407&HistoricalAwards=false
• 关键词: International; Research; Fellowship; Program; Song

0502407MarantzThe International Research Fellowship Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support a twenty-two-month research fellowship by Dr. Curtis A. Marantz to work with Dr. Jorge L. Perez Eman at the Universidad Central de Venezuela in Caracas, Venezuela.Vocalizations are believed to promote reproductive isolation in many animal taxa, but only recently have they been used in studies of Neotropical birds. To better understand regional biogeography and vocal evolution in the Buff-throated Woodcreeper complex, the present work seeks to 1) document the geographical distribution of the two species (X. guttatus and the Cocoa Woodcreeper, X. susurrans) and four subspecies groups in this complex that occur in Venezuela, 2) determine how many evolutionary lineages are represented, 3) examine song evolution in this complex using a comparative method, and 4) assess the importance of vocalizations in the reproductive isolation of these birds. The Pis will record songs and collect specimens of woodcreepers from sites across Venezuela. These sites were chosen both to elucidate potential geographical gaps and to locate areas of contact between taxa in this group. It appears that this species complex is represented in Venezuela by evolutionary lineages that have affinities to Central America, the Caribbean, the Guianas, and Amazonia. The Venezuelan Llanos likely represents a contact zone for X. guttatus and X. susurrans, so it is key to the study of reproductive isolation in these taxa. It is likely that examination of vocal data in a phylogenetic context will reveal both rapid evolution of some vocalizations and that reproductive isolation involves more than just songs. This project represents one of few studies to examine song evolution using a comparative method and it will be the first to incorporate vocal variation within individuals.Collaboration with Venezuelan institutions strengthens the research capabilities of the host country, while at the same time it provides vocal and genetic samples from a region that, despite its importance to regional biogeography, is underrepresented in studies of avian phylogeography. All specimens collected in Venezuela will be deposited at the Phelps Ornithological Collection in Caracas, and all sound recordings will be archived at the Library of Natural Sounds, Cornell Laboratory of Ornithology, Ithaca, New York, with copies remaining in Venezuela.

马兰茨国际研究奖学金计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。该项目的奖项提供了联合研究的机会，并利用国外独特或互补的设施、专业知识和实验条件。该奖项将支持柯蒂斯·A·马兰茨博士与委内瑞拉加拉加斯中央大学的豪尔赫·L·佩雷斯·埃曼博士合作的为期22个月的研究奖学金。职称被认为在许多动物类群中促进生殖隔离，但直到最近才被用于新热带鸟类的研究。为了更好地了解浮喉爬行动物复合体的区域生物地理和发声进化，本工作试图1)记录委内瑞拉该复合体中两个物种(X.guttatus和X.susurrans)和四个亚种群的地理分布，2)确定有多少进化谱系，3)使用比较方法检查该复合体中的鸣叫进化，以及4)评估发声在这些鸟类生殖隔离中的重要性。PIS将录制歌曲，并从委内瑞拉各地收集爬木动物标本。选择这些地点既是为了阐明潜在的地理差距，也是为了确定这一组中分类群之间的联系区域。这一物种复合体似乎在委内瑞拉表现为与中美洲、加勒比海、圭亚那和亚马逊地区有亲缘关系的进化谱系。委内瑞拉的Llanos很可能代表了牙根X.guttatus和X.susurrans的接触区，因此它是研究这些分类群生殖隔离的关键。在系统发育的背景下对发声数据的研究很可能会揭示出一些发声方式的快速进化，以及生殖隔离涉及的不仅仅是歌曲。这个项目是为数不多的使用比较方法研究歌声演变的研究之一，它将是第一个将声音变异纳入个体的研究。与委内瑞拉机构的合作加强了东道国的研究能力，同时它提供了来自该地区的声音和遗传样本，尽管该地区对区域生物地理学很重要，但在鸟类系统发育研究中却没有得到充分的代表。在委内瑞拉收集的所有标本将保存在加拉加斯的菲尔普斯鸟类收藏馆，所有声音录音将保存在纽约伊萨卡康奈尔鸟类学实验室的自然声音图书馆，副本留在委内瑞拉。