Genetic divergence of tanaidaceans (Crustacea: Peracarida) with low dispersal abilityReport as inadecuate




Genetic divergence of tanaidaceans (Crustacea: Peracarida) with low dispersal ability - Download this document for free, or read online. Document in PDF available to download.

Materias : 241705 Biología marina

Fecha de publicación : 2014

Fecha de depósito: 29-mar-2014

Tipo de documento: Artículo

Resumen : EN In this study, the phylogeographic patterns of nuclear, ribosomal and mtDNA gene fragments of five tanaidacean species (Zeuxo, Tanaidae) from the Atlantic, Pacific and Mediterranean Sea were investigated.ES En este estudio, investigamos los patrones filogeográficos de fragmentos de ADN nuclear, ribosómico y mitocondrial de 5 especies de tanaidáceos (Zeuxo, Tanaidae) del Atlántico, Pacífico y Mediterráneo.

En : Scientia marina, Institut de Ciències del Mar, 0214-8358, v. 78, n, 1, p. 81-90





Author: Larsem, KimTuya, F.Froufe, Elsa

Source: https://acceda.ulpgc.es


Teaser



Scientia Marina 78(1) March 2014, 000-000, Barcelona (Spain) ISSN-L: 0214-8358 doi: http:--dx.doi.org-10.3989-scimar.03878.19A Genetic divergence of tanaidaceans (Crustacea: Peracarida) with low dispersal ability Kim Larsen 1, Fernando Tuya 2, Elsa Froufe 1 1 CIIMAR (Centro Interdisciplinar de Investigação Marinha e Ambiental), LMCEE (Laboratory of Marine Community Ecology and Evolution), Rua dos Bragas 289, 4050-123 Porto, Portugal.
E-mail: tanaids@hotmail.com 2 BIOGES, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de G.C., Spain. Summary: In this study, the phylogeographic patterns of nuclear, ribosomal and mtDNA gene fragments of five tanaidacean species (Zeuxo, Tanaidae) from the Atlantic, Pacific and Mediterranean Sea were investigated.
We aimed to interpret results in the framework of current hypotheses on the distribution of small invertebrates with very limited dispersal ability.
Evidence for a surprisingly high genetic divergence was found for intertidal tanaidaceans from the North Atlantic.
This is a result of poor dispersal potential, as tanaidaceans have direct development, no pelagic stage, and very limited swimming capacity. However, lower genetic divergence was found between an intertidal tanaid species from the North Atlantic and two from the North Pacific, which suggests a scenario of recent colonization following the last glacial maximum.
The species Zeuxo normani was found to be a species complex consisting, at least, of Z.
normani (California), Z.
cf.
normani (Japan), Z. cf.
normani (Australia), Z.
sp.
A (Korea), and Z.
holdichi (Spain and France).
Our results showed that traditional species identification underestimates tanaidacean diversity and that what have been previously perceived as reliable diagnostic morphological characters, are, however, variable and unreliable. Keywords: genetic divergence; morphological differences; 28S; H3; COI; Crustacea; Tanaidacea; Zeuxo. Divergencia genética de tanaidáceos (Crustacea: Perac...






Related documents