Markolf, Matthias

[["dc.bibliographiccitation.artnumber","216"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Evolutionary Biology"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Brameier, Markus"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:53Z"],["dc.date.available","2017-09-07T11:48:53Z"],["dc.date.issued","2011"],["dc.description.abstract","BACKGROUND:Although most taxonomists agree that species are independently evolving metapopulation lineages that should be delimited with several kinds of data, the taxonomic practice in Malagasy primates (Lemuriformes) looks quite different. Several recently described lemur species are based solely on evidence of genetic distance and diagnostic characters of mitochondrial DNA sequences sampled from a few individuals per location. Here we explore the validity of this procedure for species delimitation in lemurs using published sequence data.RESULTS:We show that genetic distance estimates and Population Aggregation Analysis (PAA) are inappropriate for species delimitation in this group of primates. Intra- and interspecific genetic distances overlapped in 14 of 17 cases independent of the genetic marker used. A simulation of a fictive taxonomic study indicated that for the mitochondrial D-loop the minimum required number of individuals sampled per location is 10 in order to avoid false positives via PAA.CONCLUSIONS:Genetic distances estimates and PAA alone should not be used for species delimitation in lemurs. Instead, several nuclear and sex-specific loci should be considered and combined with other data sets from morphology, ecology or behavior. Independent of the data source, sampling should be done in a way to ensure a quantitative comparison of intra- and interspecific variation of the taxa in question. The results of our study also indicate that several of the recently described lemur species should be reevaluated with additional data and that the number of good species among the currently known taxa is probably lower than currently assumed."],["dc.identifier.doi","10.1186/1471-2148-11-216"],["dc.identifier.gro","3150897"],["dc.identifier.pmid","21777472"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6852"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7695"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","1471-2148"],["dc.rights","CC BY 2.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.0"],["dc.title","On species delimitation: Yet another lemur species or just genetic variation?"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","233"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Evolutionary Biology"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Rakotonirina, Hanitriniaina"],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","von Grumbkow, Phillip"],["dc.contributor.author","Brameier, Markus"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:20Z"],["dc.date.available","2017-09-07T11:48:20Z"],["dc.date.issued","2013"],["dc.description.abstract","Background: Species are the fundamental units in evolutionary biology. However, defining them as evolutionaryindependent lineages requires integration of several independent sources of information in order to develop robusthypotheses for taxonomic classification. Here, we exemplarily propose an integrative framework for speciesdelimitation in the “brown lemur complex” (BLC) of Madagascar, which consists of seven allopatric populations ofthe genus Eulemur (Primates: Lemuridae), which were sampled extensively across northern, eastern and westernMadagascar to collect fecal samples for DNA extraction as well as recordings of vocalizations. Our data base wasextended by including museum specimens with reliable identification and locality information for skull shape andpelage color analysis.Results: Between-group analyses of principal components revealed significant heterogeneity in skull shape, pelagecolor variation and loud calls across all seven populations. Furthermore, post-hoc statistical tests between pairs ofpopulations revealed considerable discordance among different data sets for different dyads. Despite a high degreeof incomplete lineage sorting among nuclear loci, significant exclusive ancestry was found for all populations,except for E. cinereiceps, based on one mitochondrial and three nuclear genetic loci.Conclusions: Using several independent lines of evidence, our results confirm the species status of the members ofthe BLC under the general lineage concept of species. More generally, the present analyses demonstrate theimportance and value of integrating different kinds of data in delimiting recently evolved radiations."],["dc.identifier.doi","10.1186/1471-2148-13-233"],["dc.identifier.gro","3150784"],["dc.identifier.pmid","24159931"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7574"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1471-2148"],["dc.subject","Species delimitation; Eulemur; Madagascar; Taxonomic inflation; Integrative taxonomy"],["dc.title","True lemurs…true species - species delimitation using multiple data sources in the brown lemur complex"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]