@ARTICLE{TreeBASE2Ref27571,
author = {Nathaniel Evans},
title = {Molecular phylogenetics of swimming crabs (Portunoidea Rafinesque, 1815) supports a revised family-level classification and suggests a single derived origin of symbiotic taxa},
year = {2018},
keywords = {Evolution, Taxonomy, Phylogeny, Portunidae, Portunoidea, Symbiosis, Decapoda, Brachyura, Systematics, Swimming crab},
doi = {10.7717/peerj.4260},
url = {http://peerj.com/articles/4260/},
pmid = {},
journal = {PeerJ},
volume = {6:e4260},
number = {},
pages = {56},
abstract = {Portunoidea is a diverse lineage of ecologically and economically important marine crabs comprising 8 families and 14 subfamilies. Closely related portunid subfamilies Caphyrinae and Thalamitinae constitute some of this group?s greatest morphological and taxonomic diversity, and are the only known lineages to include symbiotic taxa. Emergence of symbiosis in decapods remains poorly studied and portunoid crabs provide an interesting, but often overlooked example. Yet the paucity of molecular phylogenetic data available for Portunoidea makes it challenging to investigate the evolution and systematics of the group. Phylogenetic analyses, though limited, suggest that many putative portunoid taxa are para- or polyphyletic. Here I augment existing molecular data?significantly increasing taxon sampling of Caphyrinae, Thalamitinae, and several disparate portunoid lineages?to investigate the phylogenetic origin of symbiosis within Portunoidea and reevaluate higher- and lower-level portunoid classifications. Phylogenetic analyses were carried out on sequences of H3, 28S rRNA, 16S rRNA, and CO1 for up to 168 portunoid taxa; this included, for the first time, molecular data from the genera Atoportunus, Brusinia, Caphyra, Coelocarcinus, Gonioinfradens, Raymanninus, and Thalamonyx. Results support the placement of all symbiotic taxa (Caphyra, Lissocarcinus, and two Thalamita) in a single clade derived within the thalamitine genus Thalamita. Caphyrina Paulson, 1875, nom. trans. is recognized here as a subtribe within the subfamily Thalamitinae. Results also support the following taxonomic actions: Cronius is reclassified as a thalamitine genus; Thalamonyx is reestablished as a valid genus; Goniosupradens is raised to the generic rank; and three new genera (Zygita gen. nov., Thranita gen. nov., and Trierarchus gen. nov.) are described to accommodate some Thalamita s.l. taxa rendered paraphyletic by Caphyrina. A new diagnosis of Thalamitinae is provided. Results also support a more conservative classification of Portunoidea comprising three instead of eight extant families: Geryonidae (Geryonidae + Ovalipidae; new diagnosis provided), Carcinidae (Carcinidae + Pirimelidae + Polybiidae + Thiidae + Coelocarcinus; new diagnosis provided) and Portunidae. Finally, 16s rRNA data suggests that family Brusiniidae might not be a portunoid lineage.}
}
Matrices for Study 21486
Citation title:
"Molecular phylogenetics of swimming crabs (Portunoidea Rafinesque, 1815) supports a revised family-level classification and suggests a single derived origin of symbiotic taxa".
Study name:
"Molecular phylogenetics of swimming crabs (Portunoidea Rafinesque, 1815) supports a revised family-level classification and suggests a single derived origin of symbiotic taxa".
This study is part of submission 21486
(Status: Published).
Matrices
ID |
Matrix Title |
Description |
Data type |
NTAX |
NCHAR |
Taxa |
|
|
|
|
M42440
|
Portunoidea H3-Only Alignment |
123 taxa, partial H3 sequence data, alignment 327 bps |
Nucleic Acid |
123 |
327 |
View Taxa
|
|
|
|
|
M42444
|
Portunoidea 138 taxa concatenated alignment |
138 taxa, concatenated partial 16S rRNA +tRNA-leu+NADH1, CO1, 28S rRNA, and H3 sequence data, alignment 3313 bps |
Nucleic Acid |
138 |
3313 |
View Taxa
|
|
|
|
|
M42447
|
Brusinia-16S alignment |
309 taxa, partial 16S rRNA sequence data, alignment 447 bps |
Nucleic Acid |
309 |
447 |
View Taxa
|
|
|
|
|
M42442
|
Portunoidea CO1-Only Alignment |
148 taxa, partial CO1 sequence data, alignment 657 bps |
Nucleic Acid |
148 |
657 |
View Taxa
|
|
|
|
|
M42443
|
Portunoidea 28S-Only Alignment |
66 taxa, partial 28S rRNA sequence data, alignment 1224 bps |
Nucleic Acid |
66 |
1224 |
View Taxa
|
|
|
|
|
M42441
|
Portunoidea 16S-Only Alignment |
163 taxa, partial 16S rRNA+tRNA-leu+NADH1 sequence data, alignment 1105 bps |
Nucleic Acid |
163 |
1105 |
View Taxa
|
|
|
|
|
M42446
|
Portunoidea 163 taxa concatenated alignment |
163 taxa, concatenated partial 16S rRNA +tRNA-leu+NADH1, CO1, 28S rRNA, and H3 sequence data, alignment 3313 bps |
Nucleic Acid |
163 |
3313 |
View Taxa
|
|
|
|
|
M42445
|
Portunoidea 174 taxa concatenated alignment |
174 taxa, concatenated partial 16S rRNA +tRNA-leu+NADH1, CO1, 28S rRNA, and H3 sequence data, alignment 3313 bps |
Nucleic Acid |
174 |
3313 |
View Taxa
|
|
|
|
|