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      A new species of Curculionichthys (Siluriformes: Loricariidae) from the north edge of the Brazilian Shield, lower Amazon basin

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          Abstract

          ABSTRACT A new species of Curculionichthys is described from the rio Curuá-Una basin, in the northern edge of the Brazilian Shield, State of Pará, Brazil. The new species is diagnosed from congeners by possessing a single rostral plate, by having darkened tooth-crowns, and by a series of morphometric and meristic data. A close examination of the species of Curculionichthys revealed the presence of hyperthrophied odontodes on both dorsal and ventral margins of the snout tip, which are illustrated by electronic microscopy. A discussion is provided on possible phylogenetic relationships of the new taxon. The new species is provisionally accessed as Least Concern (not threatened).

          Translated abstract

          RESUMO Uma nova espécie de Curculionichthys é descrita da bacia do rio Curuá-Una, na borda norte do Escudo Brasileiro, Estado do Pará, Brasil. A nova espécie é diagnosticada de seus congêneres por possuir uma placa rostral única, a coroa dos dentes escurecida e por uma séria de dados morfométricos e merísticos. Um exame detalhado das espécies de Curculionichthys revelou a presença de odontódeos hipertrofiados nas margens dorsal e ventral da ponta do focinho, que são ilustrados por microscopia eletrônica. Uma discussão é apresentada sobre as possíveis relações filogenéticas do novo táxon. A nova espécie é provisoriamente categorizada como Menos Preocupante (não ameaçada).

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          The Neotropical cascudinhos: systematics and biogeography of the Otocinclus catfishes (Siluriformes: Loricariidae).

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            GenSeq: An updated nomenclature and ranking for genetic sequences from type and non-type sources

            Abstract An improved and expanded nomenclature for genetic sequences is introduced that corresponds with a ranking of the reliability of the taxonomic identification of the source specimens. This nomenclature is an advancement of the “Genetypes” naming system, which some have been reluctant to adopt because of the use of the “type” suffix in the terminology. In the new nomenclature, genetic sequences are labeled “genseq,” followed by a reliability ranking (e.g., 1 if the sequence is from a primary type), followed by the name of the genes from which the sequences were derived (e.g., genseq-1 16S, COI). The numbered suffix provides an indication of the likely reliability of taxonomic identification of the voucher. Included in this ranking system, in descending order of taxonomic reliability, are the following: sequences from primary types – “genseq-1,” secondary types – “genseq-2,” collection-vouchered topotypes – “genseq-3,” collection-vouchered non-types – “genseq-4,” and non-types that lack specimen vouchers but have photo vouchers – “genseq-5.” To demonstrate use of the new nomenclature, we review recently published new-species descriptions in the ichthyological literature that include DNA data and apply the GenSeq nomenclature to sequences referenced in those publications. We encourage authors to adopt the GenSeq nomenclature (note capital “G” and “S” when referring to the nomenclatural program) to provide a searchable tag (e.g., “genseq”; note lowercase “g” and “s” when referring to sequences) for genetic sequences from types and other vouchered specimens. Use of the new nomenclature and ranking system will improve integration of molecular phylogenetics and biological taxonomy and enhance the ability of researchers to assess the reliability of sequence data. We further encourage authors to update sequence information on databases such as GenBank whenever nomenclatural changes are made.
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              Phylogenomic reappraisal of the Neotropical catfish family Loricariidae (Teleostei: Siluriformes) using ultraconserved elements

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                ni
                Neotropical Ichthyology
                Neotrop. ichthyol.
                Sociedade Brasileira de Ictiologia (Maringá, PR, Brazil )
                1679-6225
                1982-0224
                May 2019
                : 17
                : 2
                : e190001
                Affiliations
                [2] Washington DC orgnameSmithsonian Institution orgdiv1National Museum of Natural History orgdiv2Department of Vertebrate Zoology USA
                [1] Porto Alegre Rio Grande do Sul orgnamePontifícia Universidade Católica do Rio Grande do Sul orgdiv1Laboratório de Sistemática de Vertebrados Brazil suelengamarra@ 123456gmail.com
                Article
                S1679-62252019000200201
                10.1590/1982-0224-20190001
                d06025fc-9964-4699-bfe0-461d8d0d5a3b

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 03 January 2019
                : 28 March 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 0
                Product

                SciELO Brazil

                Categories
                Original Article

                Cascudinho,Fishes,Neotropical,Systematics,Taxonomy,Peixes,Sistemática,Taxonomia

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