Sympatric and independently evolving lineages in the Thoropa miliaris - T. taophora species complex (Anura: Cycloramphidae)

Autor(es)

Sabbag, Ariadne F. ^{[1, 2]} ; Thome, Maria Tereza C. ^{[1, 2]} ; Lyra, Mariana L. ^{[1, 2]} ; Brasileiro, Cinthia A. ^[3] ; Lemmon, Emily Moriarty ^[4] ; Lemmon, Alan ^[5] ; Haddad, Celio F. B. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Dept Biodiversidade, Inst Biociencias, BR-13506900 Rio Claro, SP - Brazil

^[2] Univ Estadual Paulista UNESP, Ctr Aquicultura CAUNESP, Inst Biociencias, BR-13506900 Rio Claro, SP - Brazil

^[3] Univ Fed Sao Paulo, Dept Ecol & Biol Evolut, BR-09972270 Diadema, SP - Brazil

^[4] Florida State Univ, Dept Biol Sci, Tallahassee, FL 32306 - USA

^[5] Florida State Univ, Dept Sci Comp, Tallahassee, FL 32306 - USA

• Tipo de documento: Artigo Científico
• Fonte: Molecular Phylogenetics and Evolution; v. 166, JAN 2022.
• Citações Web of Science: 0

Resumo

Species delimitation can be challenging and affected by subjectivity. Sibling lineages that occur in sympatry constitute good candidates for species delimitation regardless of the adopted species concept. The Thoropa miliaris + T. taophora species complex exhibits high genetic diversity distributed in several lineages that occur sympatrically in the southeastern Atlantic Forest of Brazil. We used 414 loci obtained by anchored hybrid enrichment to characterize genetic variation in the Thoropa miliaris species group (T. saxatilis, T megatympanum, T. miliaris, and T. taophora), combining assignment analyses with traditional and coalescent phylogeny reconstruction. We also investigated evolutionary independence in co-occurring lineages by estimating gene flow, and validated lineages under the multispecies coalescent. We recovered most previously described lineages as unique populations in assignment analyses; exceptions include two lineages within T. miliaris that are further sub-structured, and the merging of all T. taophora lineages. We found very low probabilities of gene flow between sympatric lineages, suggesting independent evolution. Species tree inferences and species delimitation yielded resolved relationships and indicate that all lineages constitute putative species that diverged during the Pliocene and Pleistocene, later than previously estimated. (AU)

• Processo FAPESP: 13/50741-7 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 17/26162-8 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Mariana Lúcio Lyra
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico