[1, 2, 3]
Arredondo, Juan C.
Grazziotin, Felipe G.
da Silva, Ariane A. A.
Prudente, Ana L. C.
Rodrigues, Miguel T.
Bonatto, Sandro L.
Número total de Autores: 8
Afiliação do(s) autor(es):
 Univ Sao Paulo, Museu Zool, Sao Paulo - Brazil
 Univ Estadual Paulista, Programa Posgrad Zool, Rio Claro - Brazil
 Museu Paraense Emilio Goeldi, Lab Herpetol Coordenacao Zool, Belem, Para - Brazil
 Inst Butantan, Lab Colecoes Zool, Sao Paulo - Brazil
 Univ Fed Para, Programa Posgrad Zool, Belem, Para - Brazil
 Inst Nacl de Pesquisas da Amazonia, Programa Colecoes & Acervos Cient, Manaus, Amazonas - Brazil
 Univ Sao, Inst Biociencias, Dept Zool, Sao Paulo - Brazil
 Pontificia Univ Catolica Rio Grande do Sul, Escola Ciencias, Lab Biol Genom & Mol, Porto Alegre, RS - Brazil
Número total de Afiliações: 8
Tipo de documento:
Citações Web of Science:
Typhlopidae is the most diverse family of Scolecophidia, with 269 species. Amerotyphlops was recently erected within subfamily Typhlopinae and comprises fifteen species distributed from Mexico to Argentina and the southern Lesser Antilles. Despite recent advances, affinities among typhlopines remain poorly explored, and the phylogenetic relationships and morphology of the South American (SA) species were never accessed before. Here, we performed a phylogenetic analysis including 106 species of Typhlopidae and ten genes. Our dataset represents the most comprehensive for SA species, containing seven of eight recognized species. Corroborating previous studies, we recovered the main groups of Typhlopoidea, and for typhlopines, we recovered with strong support two clades: (a) the Greater Antilles radiation, and the (b) Lesser Antilles and SA radiation. Within the SA radiation, we recovered four main lineages: (a) a clade formed by A. tasymicris and A. minuisquamus; (b) a clade composed by A. reticulatus as the sister group of all other SA species; (c) a clade composed by A. brongersmianus as the sister group of a clade comprising all Northeast Brazilian Species (NBS); and (d) a clade of the NBS, including A. yonenagae, A. arenensis, A. paucisquamus, and A. amoipira. We supplemented our phylogenetic result with the description of hemipenial morphology for seven SA species and comment their relevance to the systematics of Typhlopinae. Hemipenes of SA Amerotyphlops follow the general pattern in scolecophidians (single organ with undivided sulcus). Only A. reticulatus and A. minuisquamus have organs with calcified spines. According to our results, hemipenial ornamentation have shown highly informative and could represent a potential source of systematic and taxonomic characters in that group. We also present an extensive review of the geographical distribution for all SA species. Our study represents the first integrative analysis of a poorly known evolutionary radiation of one of the most widespread SA fossorial snakes. (AU)