Combined multigene and morphological analysis reveals lineage-specific diversification of the neotropical freshwater crabs of the genus Fredius Pretzmann, 1967 (Brachyura, Pseudothelphusidae)

The pseudothelphusid freshwater crabs of the genus Fredius Pretzmann, 1967 are distributed throughout northern South America and currently include 15 species. We investigated the phylogenetic relationship within the genus using mitochondrial (16S rRNA and COI) and nuclear (H3) genes for most of its...

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Bibliographic Details
Published inSystematics and biodiversity Vol. 20; no. 1; pp. 1 - 15
Main Authors Mantelatto, F.L., Souza-Carvalho, E.A., Araujo, S.R., Magalhães, C.
Format Journal Article
LanguageEnglish
Published Oxford Taylor & Francis 31.12.2022
Taylor & Francis Ltd
Subjects
Amazon region
Crabs
Crustaceans
Cryptic species
Decapoda
Kingsleyinae
Mitochondria
Morphology
nanoCT scan
Phylogeny
rRNA 16S
Species
systematics
Topology
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Summary:The pseudothelphusid freshwater crabs of the genus Fredius Pretzmann, 1967 are distributed throughout northern South America and currently include 15 species. We investigated the phylogenetic relationship within the genus using mitochondrial (16S rRNA and COI) and nuclear (H3) genes for most of its representatives. Our set of molecular results (10 species) indicate that Fredius, as currently recovered, is formed by species included in three main lineages. In addition, the results revealed inconsistencies in the morphological identification of some species against the molecular positioning in the topology and suggested the presence of cryptic species, which must be morphologically reanalysed.
ISSN:1477-2000
1478-0933
DOI:10.1080/14772000.2021.2008042