The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile

Speciation is a direct consequence of isolated populations in taxa with low dispersal potential. The brooding crustacean Excirolana braziliensis, with a presumably wide geographic range of distribution (~16° N-41° S in the Pacific and ~19° N-35° S in the Atlantic), has been detected to correspond to...

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Autores principales:	VARELA,ANDREA I, HAYE,PILAR A
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2012
Materias:	cryptic species genetic differentiation genetic distance marine peracarids phylogenetics
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400011
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spelling	oai:scielo:S0716-078X20120004000112013-07-26The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of ChileVARELA,ANDREA IHAYE,PILAR A cryptic species genetic differentiation genetic distance marine peracarids phylogenetics Speciation is a direct consequence of isolated populations in taxa with low dispersal potential. The brooding crustacean Excirolana braziliensis, with a presumably wide geographic range of distribution (~16° N-41° S in the Pacific and ~19° N-35° S in the Atlantic), has been detected to correspond to cryptic species on the coast of Panama. Latitudinal variations in reproductive features in E. braziliensis have been attributed to phenotypic plasticity, however, the differences may be the result of divergent populations. Considering that the taxon has been reported to be a complex of cryptic species in other geographic areas and given the phenotypic differences detected along its distribution range, we hypothesized that E. braziliensis is a complex of species in the coast of Chile. We used partial cytochrome c oxidase subunit I (COI) sequences from 132 individuals with the diagnostic morphology of E. braziliensis collected along ~2200 km of coast to determine the genetic structure of E. braziliensis. Phylogenetic and phylogeographic analyses showed three distinct clades with 14 to 19 % of genetic divergence and high values of genetic differentiation. Intra and inter-clade divergence revealed the existence of a species complex of E. braziliensis on the coast of Chile, supporting growing evidence of the high abundance of cryptic species in marine invertebrate taxa.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.85 n.4 20122012-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400011en10.4067/S0716-078X2012000400011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	cryptic species genetic differentiation genetic distance marine peracarids phylogenetics
spellingShingle	cryptic species genetic differentiation genetic distance marine peracarids phylogenetics VARELA,ANDREA I HAYE,PILAR A The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile
description	Speciation is a direct consequence of isolated populations in taxa with low dispersal potential. The brooding crustacean Excirolana braziliensis, with a presumably wide geographic range of distribution (~16° N-41° S in the Pacific and ~19° N-35° S in the Atlantic), has been detected to correspond to cryptic species on the coast of Panama. Latitudinal variations in reproductive features in E. braziliensis have been attributed to phenotypic plasticity, however, the differences may be the result of divergent populations. Considering that the taxon has been reported to be a complex of cryptic species in other geographic areas and given the phenotypic differences detected along its distribution range, we hypothesized that E. braziliensis is a complex of species in the coast of Chile. We used partial cytochrome c oxidase subunit I (COI) sequences from 132 individuals with the diagnostic morphology of E. braziliensis collected along ~2200 km of coast to determine the genetic structure of E. braziliensis. Phylogenetic and phylogeographic analyses showed three distinct clades with 14 to 19 % of genetic divergence and high values of genetic differentiation. Intra and inter-clade divergence revealed the existence of a species complex of E. braziliensis on the coast of Chile, supporting growing evidence of the high abundance of cryptic species in marine invertebrate taxa.
author	VARELA,ANDREA I HAYE,PILAR A
author_facet	VARELA,ANDREA I HAYE,PILAR A
author_sort	VARELA,ANDREA I
title	The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile
title_short	The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile
title_full	The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile
title_fullStr	The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile
title_full_unstemmed	The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile
title_sort	marine brooder excirolana braziliensis (crustacea: isopoda) is also a complex of cryptic species on the coast of chile
publisher	Sociedad de Biología de Chile
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400011
work_keys_str_mv	AT varelaandreai themarinebrooderexcirolanabraziliensiscrustaceaisopodaisalsoacomplexofcrypticspeciesonthecoastofchile AT hayepilara themarinebrooderexcirolanabraziliensiscrustaceaisopodaisalsoacomplexofcrypticspeciesonthecoastofchile AT varelaandreai marinebrooderexcirolanabraziliensiscrustaceaisopodaisalsoacomplexofcrypticspeciesonthecoastofchile AT hayepilara marinebrooderexcirolanabraziliensiscrustaceaisopodaisalsoacomplexofcrypticspeciesonthecoastofchile
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The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile

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