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Genetic diversity of Pomatoschistus microps (Perciformes: Gobiidae) in ecologically differentiated estuarine systems

Marques, Joana F LU ; Fonseca, Vanessa F.; Shao, Zhaojun; Cabral, Henrique N.; Tougard, Christelle and Berrebi, Patrick (2012) In Folia Zoologica 61(2). p.106-117
Abstract
A landscape genetics approach was applied to common goby (Pomatoschistus microps) sampled from three estuaries (six sites) of the Portuguese coast. Individuals of each site were genotyped for eight microsatellite loci and levels of genetic diversity and differentiation were correlated to present-day estuarine characteristics and historical events. A general ecological state for each sampling site was obtained from a principal component analysis (PCA) applied to estuarine geomorphologic characteristics and levels of heavy metals and total polycyclic aromatic hydrocarbons contamination. Genetic diversity was higher than that previously reported for common goby in the Atlantic and Mediterranean. F-ST were generally very low (0.000-0.049), as... (More)
A landscape genetics approach was applied to common goby (Pomatoschistus microps) sampled from three estuaries (six sites) of the Portuguese coast. Individuals of each site were genotyped for eight microsatellite loci and levels of genetic diversity and differentiation were correlated to present-day estuarine characteristics and historical events. A general ecological state for each sampling site was obtained from a principal component analysis (PCA) applied to estuarine geomorphologic characteristics and levels of heavy metals and total polycyclic aromatic hydrocarbons contamination. Genetic diversity was higher than that previously reported for common goby in the Atlantic and Mediterranean. F-ST were generally very low (0.000-0.049), as well as Nei's genetic distances (0.000-0.167), although the later were statistically significant. Estuarine geomorphology and heavy metal contamination contributed the most to estuarine ecological differentiation but no trend was detected in the relationship between these characteristics and samples' genetic diversity. Mantel tests also revealed no significant relationships between geographic, genetic and ecological distances. Null alleles only contributed to explain significant Hardy-Weinberg departures in two of the eight loci scored, although disequilibria were detected in at least two loci per sample. Notwithstanding its exploratory character, results suggest an important role for historical factors in the timing and direction of P. microps colonization of the Portuguese estuaries. Environmental variation and P. microps ability to cope with it are also structuring factors in establishing and maintaining the patchy genetic diversity detected in the studied estuaries. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
common goby, contamination, estuarine geomorphology, historical factors, microsatellites, landscape genetics
in
Folia Zoologica
volume
61
issue
2
pages
106 - 117
publisher
Inst Vertebrate Biology AS CR
external identifiers
  • wos:000306090900002
ISSN
0139-7893
language
English
LU publication?
yes
id
48c814d9-dd31-47c1-82fd-7f5ebaefd56f (old id 3001755)
date added to LUP
2012-08-21 09:57:11
date last changed
2016-04-16 00:51:20
@article{48c814d9-dd31-47c1-82fd-7f5ebaefd56f,
  abstract     = {A landscape genetics approach was applied to common goby (Pomatoschistus microps) sampled from three estuaries (six sites) of the Portuguese coast. Individuals of each site were genotyped for eight microsatellite loci and levels of genetic diversity and differentiation were correlated to present-day estuarine characteristics and historical events. A general ecological state for each sampling site was obtained from a principal component analysis (PCA) applied to estuarine geomorphologic characteristics and levels of heavy metals and total polycyclic aromatic hydrocarbons contamination. Genetic diversity was higher than that previously reported for common goby in the Atlantic and Mediterranean. F-ST were generally very low (0.000-0.049), as well as Nei's genetic distances (0.000-0.167), although the later were statistically significant. Estuarine geomorphology and heavy metal contamination contributed the most to estuarine ecological differentiation but no trend was detected in the relationship between these characteristics and samples' genetic diversity. Mantel tests also revealed no significant relationships between geographic, genetic and ecological distances. Null alleles only contributed to explain significant Hardy-Weinberg departures in two of the eight loci scored, although disequilibria were detected in at least two loci per sample. Notwithstanding its exploratory character, results suggest an important role for historical factors in the timing and direction of P. microps colonization of the Portuguese estuaries. Environmental variation and P. microps ability to cope with it are also structuring factors in establishing and maintaining the patchy genetic diversity detected in the studied estuaries.},
  author       = {Marques, Joana F and Fonseca, Vanessa F. and Shao, Zhaojun and Cabral, Henrique N. and Tougard, Christelle and Berrebi, Patrick},
  issn         = {0139-7893},
  keyword      = {common goby,contamination,estuarine geomorphology,historical factors,microsatellites,landscape genetics},
  language     = {eng},
  number       = {2},
  pages        = {106--117},
  publisher    = {Inst Vertebrate Biology AS CR},
  series       = {Folia Zoologica},
  title        = {Genetic diversity of <i>Pomatoschistus microps</i> (Perciformes: Gobiidae) in ecologically differentiated estuarine systems},
  volume       = {61},
  year         = {2012},
}