Artigo

Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon)

Palaemon carteri (Gordon, 1935) and P. ivonicus (Holthuis, 1950) are morphologically similar species of South American freshwater shrimps. Past studies have questioned the taxonomic status of both species, which are supposed to have partially sympatric geographic distributions in the Amazon basin. W...

ver descrição completa

Autor principal: Carvalho, Fabrício Lopes
Outros Autores: Magalhães, Célio, Mantelatto, Fernando L.
Grau: Artigo
Idioma: English
Publicado em: ZooKeys 2020
Assuntos:
Decapoda (crustacea)
Palaemon
Palaemonidae
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/15256
id oai:repositorio:1-15256
recordtype dspace
spelling oai:repositorio:1-15256 Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon) Carvalho, Fabrício Lopes Magalhães, Célio Mantelatto, Fernando L. Decapoda (crustacea) Palaemon Palaemonidae Palaemon carteri (Gordon, 1935) and P. ivonicus (Holthuis, 1950) are morphologically similar species of South American freshwater shrimps. Past studies have questioned the taxonomic status of both species, which are supposed to have partially sympatric geographic distributions in the Amazon basin. We analyzed a 550 bp fragment of the mitochondrial 16S rRNA gene from these Amazonian Palaemon species as well as from 11 palaemonids as the outgroup. Additionally, we checked diagnostic characters of the genus and family as well as other morphological characters that have been little explored before. Palaemon carteri and P. ivonicus are allocated in two sister lineages, with wide genetic divergence and little morphological differentiation. The divergence time between these lineages was estimated as approximately 10 million years ago. Both molecular and morphological data support the taxonomic validity of both Palaemon carteri and P. ivonicus, refuting the hypothesis of synonymy. In addition, a new species, Palaemon yuna sp. n., closely related to P. ivonicus, is described. Our findings indicate that these species can be differentiated using the projection of the anterolateral margin and anterolateral spine of the first antennular segment, shape of the rostrum, and relative size of the appendix masculina. © Fabrício Lopes Carvalho et al. 2020-05-07T14:21:51Z 2020-05-07T14:21:51Z 2014 Artigo https://repositorio.inpa.gov.br/handle/1/15256 10.3897/zookeys.457.6771 en Volume 457, Pags. 79-108 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf ZooKeys
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Decapoda (crustacea)
Palaemon
Palaemonidae
spellingShingle Decapoda (crustacea)
Palaemon
Palaemonidae
Carvalho, Fabrício Lopes
Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon)
topic_facet Decapoda (crustacea)
Palaemon
Palaemonidae
description Palaemon carteri (Gordon, 1935) and P. ivonicus (Holthuis, 1950) are morphologically similar species of South American freshwater shrimps. Past studies have questioned the taxonomic status of both species, which are supposed to have partially sympatric geographic distributions in the Amazon basin. We analyzed a 550 bp fragment of the mitochondrial 16S rRNA gene from these Amazonian Palaemon species as well as from 11 palaemonids as the outgroup. Additionally, we checked diagnostic characters of the genus and family as well as other morphological characters that have been little explored before. Palaemon carteri and P. ivonicus are allocated in two sister lineages, with wide genetic divergence and little morphological differentiation. The divergence time between these lineages was estimated as approximately 10 million years ago. Both molecular and morphological data support the taxonomic validity of both Palaemon carteri and P. ivonicus, refuting the hypothesis of synonymy. In addition, a new species, Palaemon yuna sp. n., closely related to P. ivonicus, is described. Our findings indicate that these species can be differentiated using the projection of the anterolateral margin and anterolateral spine of the first antennular segment, shape of the rostrum, and relative size of the appendix masculina. © Fabrício Lopes Carvalho et al.
format Artigo
author Carvalho, Fabrício Lopes
author2 Magalhães, Célio
Mantelatto, Fernando L.
author2Str Magalhães, Célio
Mantelatto, Fernando L.
title Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon)
title_short Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon)
title_full Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon)
title_fullStr Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon)
title_full_unstemmed Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon)
title_sort molecular and morphological differentiation between two miocene-divergent lineages of amazonian shrimps, with the description of a new species (decapoda, palaemonidae, palaemon)
publisher ZooKeys
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/15256
_version_ 1787143171515351040
score 11.755432

Registros relacionados