title: Molecular phylogeny of the genus Lolliguncula steenstrup, 1881 based on nuclear and mitochondrial DNA sequences indicates genetic isolation of populations from north and South atlantic, and the possible presence of further cryptic species.
abstract: Squid of the genus Lolliguncula Steenstrup, 1881 are small bodied, coastal species capable of tolerating low salinity. Lolliguncula sp. are found exclusively in the New World, although only one of the four recognized species (Lolliguncula brevis) occurs in the Atlantic Ocean. Preliminary morphological analyses suggest that Lolliguncula brevis populations in the North and South Atlantic may represent distinct species. The principal objective of the present study was to verify the phylogenetic relationships within the genus and test for the presence of possible cryptic species. Both gene and species tree topologies indicated that Lolliguncula brevis specimens from the North and South Atlantic represent distinct phylogenetic clades. In contrast with previous studies, L. panamensis was identified as the basal species of the genus. Our results provide important insights into the phylogenetic relationships among the Lolliguncula specimens analyzed, and confirm the genetic separation of Lolliguncula brevis populations of the North and South Atlantic at the level of sister species.
authors.affiliation: Universidade Federal do Pará, Campus Universitário de Bragança, Bragança, Pará, Brazil.
authors.forename: João Bráullio L
authors.initials: JB
authors.lastname: Sales
authors.affiliation: Línea de Pesquerías Artesanales, El Colegio da la Frontera Sur, Lerma, Campeche, Mexico.
authors.forename: Unai
authors.initials: U
authors.lastname: Markaida
authors.affiliation: Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, Dyfed, United Kingdom.
authors.forename: Paul W
authors.initials: PW
authors.lastname: Shaw
authors.affiliation: Laboratório de Recursos Demersais e Cefalópodes, Universidade Federal do Rio Grande, Caixa Postal 474, Rio Grande, Rio Grande do Sul, Brazil.
authors.forename: Manuel
authors.initials: M
authors.lastname: Haimovici
authors.affiliation: Universidade Federal do Pará, Campus Universitário de Bragança, Bragança, Pará, Brazil.
authors.forename: Jonathan S
authors.initials: JS
authors.lastname: Ready
authors.affiliation: Universidade Federal do Pará, Campus Universitário de Bragança, Bragança, Pará, Brazil.
authors.forename: Wilsea M B
authors.initials: WM
authors.lastname: Figueredo-Ready
authors.affiliation: Universidade Federal do Pará, Campus Universitário de Bragança, Bragança, Pará, Brazil.
authors.forename: Fabricio
authors.initials: F
authors.lastname: Angioletti
authors.affiliation: Universidade Federal do Pará, Campus Universitário de Bragança, Bragança, Pará, Brazil.
authors.forename: Manoela A
authors.initials: MA
authors.lastname: Carneiro
authors.affiliation: Universidade Federal do Pará, Campus Universitário de Bragança, Bragança, Pará, Brazil.
authors.forename: Horacio
authors.initials: H
authors.lastname: Schneider
authors.affiliation: Universidade Federal do Pará, Campus Universitário de Bragança, Bragança, Pará, Brazil.
authors.forename: Iracilda
authors.initials: I
authors.lastname: Sampaio
mesh_terms: D000818:Animals; D001267:Atlantic Ocean; D001483:Base Sequence / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics*; D049832:Decapodiformes / Q000235:genetics*; D019143:Evolution, Molecular; D010802:Phylogeny; D011153:Population / Q000235:genetics*; D060047:Reproductive Isolation; D017422:Sequence Analysis, DNA / Q000379:methods
chemical_list: D004272:DNA, Mitochondrial