Adolfo Amézquita, Fernando Vargas-Salinas, Iván Ramos, Pablo Palacios-Rodríguez, Erika Nathalia Salazar, Michelle Quiroz, Wilmar Bolívar, Diana M Galindo-Uribe, Luis A Mazariegos-H
{"title":"Molecular phylogenetics uncovers two new species in the genus <i>Phyllobates</i> (Anura, Dendrobatidae): the terrible frog gets two new sisters.","authors":"Adolfo Amézquita, Fernando Vargas-Salinas, Iván Ramos, Pablo Palacios-Rodríguez, Erika Nathalia Salazar, Michelle Quiroz, Wilmar Bolívar, Diana M Galindo-Uribe, Luis A Mazariegos-H","doi":"10.3897/zookeys.1212.126733","DOIUrl":null,"url":null,"abstract":"<p><p>True poison-dart frogs (<i>Phyllobates</i>, Dendrobatidae) evolved the ability to secrete batrachotoxins, the most powerful alkaloids known to date. The genus comprises five species whose systematics, at first glance, appeared clear. The most derived clade would include two Colombian species (<i>P.terribilis</i> and <i>P.bicolor</i>) with the highest toxicity, the largest body size, and predominantly yellow body colouration. The other three species (<i>P.aurotaenia</i>, <i>P.vittatus</i>, and <i>P.lugubris</i>) are less toxic on average, have smaller size, and are predominantly black with bright dorsolateral stripes. Recent research has revealed the existence of two major lineages among the three Colombian species. The northern lineage appears to result from a complex evolutionary history, including perhaps introgression among yellow and black taxa. The southern lineage instead revealed the existence of new clades closely related to <i>P.terribilis</i>, black and yellow, that arguably deserve their recognition as new species. Here, available evidence is combined to support the erection of southern populations of <i>P.aurotaenia</i> as a new highly toxic species, sister to <i>P.terribilis</i>, and much closer to it than to any other yellow or black-bodied species, <i>Phyllobatessamperi</i> <b>sp. nov.</b> Their common ancestor is sister to an additional yellow species, which we also describe here as <i>Phyllobatesbezosi</i> <b>sp. nov.</b> Both new species can be externally diagnosed using colouration. Our previous and current analyses also suggest the existence of additional taxa and corroborate multiple transitions in colouration across these hypertoxic taxa.</p>","PeriodicalId":24051,"journal":{"name":"ZooKeys","volume":"1212 ","pages":"217-240"},"PeriodicalIF":1.3000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11420536/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ZooKeys","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3897/zookeys.1212.126733","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"ZOOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
True poison-dart frogs (Phyllobates, Dendrobatidae) evolved the ability to secrete batrachotoxins, the most powerful alkaloids known to date. The genus comprises five species whose systematics, at first glance, appeared clear. The most derived clade would include two Colombian species (P.terribilis and P.bicolor) with the highest toxicity, the largest body size, and predominantly yellow body colouration. The other three species (P.aurotaenia, P.vittatus, and P.lugubris) are less toxic on average, have smaller size, and are predominantly black with bright dorsolateral stripes. Recent research has revealed the existence of two major lineages among the three Colombian species. The northern lineage appears to result from a complex evolutionary history, including perhaps introgression among yellow and black taxa. The southern lineage instead revealed the existence of new clades closely related to P.terribilis, black and yellow, that arguably deserve their recognition as new species. Here, available evidence is combined to support the erection of southern populations of P.aurotaenia as a new highly toxic species, sister to P.terribilis, and much closer to it than to any other yellow or black-bodied species, Phyllobatessamperisp. nov. Their common ancestor is sister to an additional yellow species, which we also describe here as Phyllobatesbezosisp. nov. Both new species can be externally diagnosed using colouration. Our previous and current analyses also suggest the existence of additional taxa and corroborate multiple transitions in colouration across these hypertoxic taxa.
期刊介绍:
ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography.
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