Convergences in the diversification of bats  

作　　者：M.Brock FENTON 

机构地区：[1]Department of Biology, University of Western Ontario

出　　处：《Current Zoology》2010年第4期454-468,共15页动物学报（英文版）

基　　金：supported by grants from the Natural Sciences and Engineering Research Council of Canada;the K.E Molson Foundation;WWF Canada

摘　　要：Twenty-five characters or suites of characters from bats are considered in light of changes in bat classification. Thecharacters include some associated with flower-visiting (two), echolocation (12), roosting (six), reproduction (two) and three areof unknown adaptive function. In both the 1998 and 2006 classifications of bats into suborders (Megachiroptera and Microchiropteraversus Yinpterochiroptera and Yangochiroptera, respectively), some convergences between suborders are the same (e.g.,foliage roosting, tent building), but others associated with echolocation differ substantially. In the 1998 phylogeny convergencesassociated with echolocation (high duty cycle echolocation, nasal emission of echolocation calls) occurred among the Microchiroptera.In the 2006 phylogeny, they occur between Yinpterochiroptera and Yangochiroptera. While some traits apparently aroseindependently in two suborders (e.g., foliage-roosting, tent building, low intensity echolocation calls, noseleafs, nasal emission ofecholocation calls, high duty cycle echolocation behaviour), others appear to have been ancestral (roosting in narrow spaces,laryngeal echolocation, stylohyal-tympanic contact, oral emission of echolocation calls, and small litter size). A narrow profilethrough the chest is typical of bats reflecting the thoracic skeleton. This feature suggests that the ancestors of bats spent the day insmall crevices. Features associated with laryngeal echolocation appear to be ancestral, suggesting that echolocation evolved earlyin bats but was subsequently lost in one yinpterochiropteran lineage .

关 键 词：Flower-visiting ECHOLOCATION ROOSTING REPRODUCTION Ancestral bat 

分 类 号：Q958[生物学—动物学]