Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla )
International audience Positive correlations between individual genetic heterozygosity and fitness-related traits (HFCs) have been observed in organisms as diverse as plants, marine bivalves, fish or mammals. HFCs are not universal and the strength and stability of HFCs seem to be variable across sp...
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ftunivnantes:oai:HAL:hal-02661903v1 2023-05-15T13:28:05+02:00 Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla ) Pujolar, Jose M. Bevacqua, Danièle Capoccioni, Fabrizio Ciccotti, Eleonora de Leo, Giulio Alessandro Zane, Lorenzo Università degli Studi di Padova = University of Padua (Unipd) Dipartimento di Scienze Ambientali Università degli studi di Parma = University of Parma (UNIPR) Università degli Studi di Roma Tor Vergata Roma 2009 https://hal.inrae.fr/hal-02661903 https://doi.org/10.1111/j.1365-294X.2009.04390.x en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-294X.2009.04390.x hal-02661903 https://hal.inrae.fr/hal-02661903 doi:10.1111/j.1365-294X.2009.04390.x PRODINRA: 369534 WOS: 000271468800011 ISSN: 0962-1083 EISSN: 1365-294X Molecular Ecology https://hal.inrae.fr/hal-02661903 Molecular Ecology, 2009, 18 (22), pp.4604-4616. ⟨10.1111/j.1365-294X.2009.04390.x⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2009 ftunivnantes https://doi.org/10.1111/j.1365-294X.2009.04390.x 2022-11-30T01:10:26Z International audience Positive correlations between individual genetic heterozygosity and fitness-related traits (HFCs) have been observed in organisms as diverse as plants, marine bivalves, fish or mammals. HFCs are not universal and the strength and stability of HFCs seem to be variable across species, populations and ages. We analysed the relationship between individual genetic variability and two different estimators of fitness in natural samples of European eel, growth rate (using back-calculated length-at-age 1, 2 and 3) and parasite infestation by the swimbladder nematode Anguillicola crassus . Despite using a large data set of 22 expressed sequence tags-derived microsatellite loci and a large sample size of 346 individuals, no heterozygote advantage was observed in terms of growth rate or parasite load. The lack of association was evidenced by (i) nonsignificant global HFCs, (ii) a Multivariate General Linear Model showing no effect of heterozygosity on fitness components, (iii) single-locus analysis showing a lower number of significant tests than the expected false discovery rate, (iv) sign tests showing only a significant departure from expectations at one component, and, (v) a random distribution of significant single-locus HFCs that was not consistent across fitness components or sampling sites. This contrasts with the positive association observed in farmed eels in a previous study using allozymes, which can be explained by the nature of the markers used, with the allozyme study including many loci involved in metabolic energy pathways, while the expressed sequence tags-linked microsatellites might be located in genes or in the proximity of genes uncoupled with metabolism ⁄ growth. Article in Journal/Newspaper Anguilla anguilla European eel Université de Nantes: HAL-UNIV-NANTES Molecular Ecology 18 22 4604 4616 |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
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[SDV]Life Sciences [q-bio] |
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[SDV]Life Sciences [q-bio] Pujolar, Jose M. Bevacqua, Danièle Capoccioni, Fabrizio Ciccotti, Eleonora de Leo, Giulio Alessandro Zane, Lorenzo Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla ) |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
International audience Positive correlations between individual genetic heterozygosity and fitness-related traits (HFCs) have been observed in organisms as diverse as plants, marine bivalves, fish or mammals. HFCs are not universal and the strength and stability of HFCs seem to be variable across species, populations and ages. We analysed the relationship between individual genetic variability and two different estimators of fitness in natural samples of European eel, growth rate (using back-calculated length-at-age 1, 2 and 3) and parasite infestation by the swimbladder nematode Anguillicola crassus . Despite using a large data set of 22 expressed sequence tags-derived microsatellite loci and a large sample size of 346 individuals, no heterozygote advantage was observed in terms of growth rate or parasite load. The lack of association was evidenced by (i) nonsignificant global HFCs, (ii) a Multivariate General Linear Model showing no effect of heterozygosity on fitness components, (iii) single-locus analysis showing a lower number of significant tests than the expected false discovery rate, (iv) sign tests showing only a significant departure from expectations at one component, and, (v) a random distribution of significant single-locus HFCs that was not consistent across fitness components or sampling sites. This contrasts with the positive association observed in farmed eels in a previous study using allozymes, which can be explained by the nature of the markers used, with the allozyme study including many loci involved in metabolic energy pathways, while the expressed sequence tags-linked microsatellites might be located in genes or in the proximity of genes uncoupled with metabolism ⁄ growth. |
author2 |
Università degli Studi di Padova = University of Padua (Unipd) Dipartimento di Scienze Ambientali Università degli studi di Parma = University of Parma (UNIPR) Università degli Studi di Roma Tor Vergata Roma |
format |
Article in Journal/Newspaper |
author |
Pujolar, Jose M. Bevacqua, Danièle Capoccioni, Fabrizio Ciccotti, Eleonora de Leo, Giulio Alessandro Zane, Lorenzo |
author_facet |
Pujolar, Jose M. Bevacqua, Danièle Capoccioni, Fabrizio Ciccotti, Eleonora de Leo, Giulio Alessandro Zane, Lorenzo |
author_sort |
Pujolar, Jose M. |
title |
Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla ) |
title_short |
Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla ) |
title_full |
Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla ) |
title_fullStr |
Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla ) |
title_full_unstemmed |
Genetic variability is unrelated to growth and parasite infestation in natural populations of the European eel ( Anguilla anguilla ) |
title_sort |
genetic variability is unrelated to growth and parasite infestation in natural populations of the european eel ( anguilla anguilla ) |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.inrae.fr/hal-02661903 https://doi.org/10.1111/j.1365-294X.2009.04390.x |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
ISSN: 0962-1083 EISSN: 1365-294X Molecular Ecology https://hal.inrae.fr/hal-02661903 Molecular Ecology, 2009, 18 (22), pp.4604-4616. ⟨10.1111/j.1365-294X.2009.04390.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-294X.2009.04390.x hal-02661903 https://hal.inrae.fr/hal-02661903 doi:10.1111/j.1365-294X.2009.04390.x PRODINRA: 369534 WOS: 000271468800011 |
op_doi |
https://doi.org/10.1111/j.1365-294X.2009.04390.x |
container_title |
Molecular Ecology |
container_volume |
18 |
container_issue |
22 |
container_start_page |
4604 |
op_container_end_page |
4616 |
_version_ |
1766402141248815104 |