{"title":"PCA和DFA作为解决博物馆藏品中模糊物种关系的多元工具","authors":"K. Tuttle","doi":"10.2988/17-00020","DOIUrl":null,"url":null,"abstract":"Abstract Taxonomic relationships in genus Berylmys (B. bowersi, B. mackenziei, B. manipulus, B. berdmorei) have traditionally been ambiguous and made difficult by their geographically disjunct and scattered populations. Several specimens held in museum collections are still of unknown or disputed species assignations. Nor have cranial characters in this genus been tested for significance in variance or for usefulness in separating species. Appropriate species identifications are important for any museum-based study of phylogeny, phylogeography, population biology, functional morphology, or conservation. This study tested diagnostic characters and species assignments on one-hundred two specimens of Berylmys housed in American Museum of Natural History (AMNH), Smithsonian Museum of Natural History (NMNH), and Field Museum of Natural History (FMNH) collections. Discriminant function (DFA), principal components (PCA), and linear regression were used to analyze sixteen morphometric measurements. DFA correctly assigned >90% of specimens to their predefined species group. Length of palate (PL) and auditory bulla (LAB), length (RL) and depth of rostrum (RD), and breadth of incisive foramina (BIF) were the best discriminators among species. Six specimens of B. bowersi were re-classified as B. mackenziei, and two B. mackenziei were re-classifed as B. bowersi. One specimen of B. bowersi, of unknown locality, is indicative of Malaysian affinity under DFA.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/17-00020","citationCount":"1","resultStr":"{\"title\":\"PCA and DFA as multivariate tools to resolve ambiguous species relationships in museum collections\",\"authors\":\"K. Tuttle\",\"doi\":\"10.2988/17-00020\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Taxonomic relationships in genus Berylmys (B. bowersi, B. mackenziei, B. manipulus, B. berdmorei) have traditionally been ambiguous and made difficult by their geographically disjunct and scattered populations. Several specimens held in museum collections are still of unknown or disputed species assignations. Nor have cranial characters in this genus been tested for significance in variance or for usefulness in separating species. Appropriate species identifications are important for any museum-based study of phylogeny, phylogeography, population biology, functional morphology, or conservation. This study tested diagnostic characters and species assignments on one-hundred two specimens of Berylmys housed in American Museum of Natural History (AMNH), Smithsonian Museum of Natural History (NMNH), and Field Museum of Natural History (FMNH) collections. Discriminant function (DFA), principal components (PCA), and linear regression were used to analyze sixteen morphometric measurements. DFA correctly assigned >90% of specimens to their predefined species group. Length of palate (PL) and auditory bulla (LAB), length (RL) and depth of rostrum (RD), and breadth of incisive foramina (BIF) were the best discriminators among species. Six specimens of B. bowersi were re-classified as B. mackenziei, and two B. mackenziei were re-classifed as B. bowersi. One specimen of B. bowersi, of unknown locality, is indicative of Malaysian affinity under DFA.\",\"PeriodicalId\":54578,\"journal\":{\"name\":\"Proceedings of the Biological Society of Washington\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2018-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.2988/17-00020\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the Biological Society of Washington\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.2988/17-00020\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Agricultural and Biological Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Biological Society of Washington","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.2988/17-00020","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 1
摘要
Berylmys属(B. bowersi, B. iei, B. manipulus, B. berdmorei)的分类关系由于地理上的脱节和分散而变得模糊和困难。博物馆收藏的一些标本仍然是未知的或有争议的物种分配。在这个属中也没有测试颅性状在变异上的显著性或在分离种方面的有用性。适当的物种鉴定对于任何基于博物馆的系统发育、系统地理学、种群生物学、功能形态学或保护研究都是重要的。本文对美国自然历史博物馆(AMNH)、美国史密森尼自然历史博物馆(NMNH)和美国菲尔德自然历史博物馆(FMNH)收藏的102个Berylmys标本进行了诊断特征和物种分配测试。判别函数(DFA)、主成分(PCA)和线性回归分析了16个形态计量学测量值。DFA正确地将90%的标本分配到他们预定的物种组。腭长(PL)和听球长(LAB)、喙长(RL)和喙深(RD)、锐孔宽度(BIF)是物种间最好的鉴别指标。6个布氏白僵菌标本被重新分类为布氏mackenzie白僵菌,2个布氏白僵菌被重新分类为布氏白僵菌。一个地点不明的B. bowersi标本表明在DFA下与马来西亚有亲缘关系。
PCA and DFA as multivariate tools to resolve ambiguous species relationships in museum collections
Abstract Taxonomic relationships in genus Berylmys (B. bowersi, B. mackenziei, B. manipulus, B. berdmorei) have traditionally been ambiguous and made difficult by their geographically disjunct and scattered populations. Several specimens held in museum collections are still of unknown or disputed species assignations. Nor have cranial characters in this genus been tested for significance in variance or for usefulness in separating species. Appropriate species identifications are important for any museum-based study of phylogeny, phylogeography, population biology, functional morphology, or conservation. This study tested diagnostic characters and species assignments on one-hundred two specimens of Berylmys housed in American Museum of Natural History (AMNH), Smithsonian Museum of Natural History (NMNH), and Field Museum of Natural History (FMNH) collections. Discriminant function (DFA), principal components (PCA), and linear regression were used to analyze sixteen morphometric measurements. DFA correctly assigned >90% of specimens to their predefined species group. Length of palate (PL) and auditory bulla (LAB), length (RL) and depth of rostrum (RD), and breadth of incisive foramina (BIF) were the best discriminators among species. Six specimens of B. bowersi were re-classified as B. mackenziei, and two B. mackenziei were re-classifed as B. bowersi. One specimen of B. bowersi, of unknown locality, is indicative of Malaysian affinity under DFA.
期刊介绍:
The official publication of the Biological Society of Washington, the Proceedings of the Biological Society of Washington is an international journal containing peer-reviewed papers that broadly bear on systematics in the biological sciences (botany and zoology), paleontology, and notices of business transacted at Society meetings.