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How to detect polymorphisms undergoing selection in marine fishes? A review of methods and case studies, including flatfishes
Guinand, B.; Lemaire, C.; Bonhomme, F. (2004). How to detect polymorphisms undergoing selection in marine fishes? A review of methods and case studies, including flatfishes. J. Sea Res. 51(3-4): 167-182. https://dx.doi.org/10.1016/j.seares.2003.10.002
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414
Also appears in:
Geffen, A.J.; Nash, R.D.M.; van der Veer, H.W. (Ed.) (2004). Proceedings of the Fifth International Symposium on Flatfish Ecology, Part II. Port Erin, Isle of Man, 3-7 November 2002. Journal of Sea Research, 51(3-4). Elsevier: Amsterdam. 167-338 pp., more
Peer reviewed article  

Available in  Authors 

Keywords
    Adaptation
    Analysis > Mathematical analysis > Statistical analysis
    Aquatic organisms > Marine organisms > Fish > Marine fish
    Biological phenomena > Adaptations
    Biopolymorphism
    Evolution > Adaptation
    Molecules
    Selection
    Selection
    Pleuronectidae Rafinesque, 1815 [WoRMS]
    Marine/Coastal
Author keywords
    selection; molecular markers; statistical tests; adaptation

Authors  Top 
  • Guinand, B.
  • Lemaire, C.
  • Bonhomme, F., correspondent

Abstract
    Populations of marine organisms are potentially affected by numerous selective pressures such as temperature and salinity, or anthropogenic pressures such as xenobiotics that may preclude adaptation to particular habitats. Such selective pressures may also affect their demography. Examples include modifications of the population dynamics through shifts in growth rate, and in life history traits affecting fitness such as size or age of first reproduction. However, the documentation of variation in phenotypically plastic traits specific to distinct environments cannot be taken as the ultimate proof that natural selection has occurred. Measurement of the impact of selection and subsequent local adaptation of fish populations based exclusively on morphological or physiological characters is one of the most difficult things to achieve because it depends on the use of phenotypic characters that closely match the genotype. Molecular markers can help to overcome this problem and, under some circumstances, can record the footprints of selection. A combination of polymorphisms that are under selection and those that are not can provide complementary information. In this paper, we review how and why selection can be detected at the molecular level, using genetic markers analysed in a population genetic framework. We then report and discuss case studies in fish.

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