Breeding for robustness: Investigating the genotype-by-environment interaction and micro-environmental sensitivity of Genetically Improved Farmed Tilapia (Oreochromis niloticus)

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dc.contributor.authorAgha, S.
dc.contributor.authorMekkawy, W.
dc.contributor.authorIbanez-Escriche, N.
dc.contributor.authorLind, C. E.
dc.contributor.authorKumar, J.
dc.contributor.authorMandal, A.
dc.contributor.authorBenzie, John A. H.
dc.contributor.authorDoeschl-Wilson, A.
dc.contributor.funder
dc.contributor.funderH2020 Marie Skłodowska-Curie Actions
dc.contributor.funderBiotechnology and Biological Sciences Research Council
dc.contributor.funderBritish Council
dc.date.accessioned2018-09-27T12:08:25Z
dc.date.available2018-09-27T12:08:25Z
dc.date.issued2018
dc.description.abstractRobustness has become a highly desirable breeding goal in the globalized agricultural market. Both genotype‐by‐environment interaction (G × E) and micro‐environmental sensitivity are important robustness components of aquaculture production, in which breeding stock is often disseminated to different environments. The objectives of this study were (i) to quantify the degree of G × E by assessing the growth performance of Genetically Improved Farmed Tilapia (GIFT) across three countries (Malaysia, India and China) and (ii) to quantify the genetic heterogeneity of environmental variance for body weight at harvest (BW) in GIFT as a measure of micro‐environmental sensitivity. Selection for BW was carried out for 13 generations in Malaysia. Subsets of 60 full‐sib families from Malaysia were sent to China and India after five and nine generations respectively. First, a multi‐trait animal model was used to analyse the BW in different countries as different traits. The results indicate a strong G × E. Second, a genetically structured environmental variance model, implemented using Bayesian inference, was used to analyse micro‐environmental sensitivity of BW in each country. The analysis revealed the presence of genetic heterogeneity of both BW and its environmental variance in all environments. The presence of genetic variation in residual variance of BW implies that the residual variance can be modified by selection. Incorporating both G × E and micro‐environmental sensitivity information may help in selecting robust genotypes with high performance across environments and resilience to environmental fluctuations.en
dc.description.sponsorshipBritish Council (Newton Grant); Biotechnology and Biological Sciences Research Council (Institute Strategic Programme Grants (BB/J004235/1 (ISP1); BBS/E/D/30002276 (ISP3)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationAgha, S., Mekkawy, W., Ibanez-Escriche, N., Lind, C. E., Kumar, J., Mandal, A., Benzie, J. A. H. and Doeschl-Wilson, A. 'Breeding for robustness: investigating the genotype-by-environment interaction and micro-environmental sensitivity of Genetically Improved Farmed Tilapia (Oreochromis niloticus)', Animal Genetics, pp. 1-7. doi: 10.1111/age.12680en
dc.identifier.doi10.1111/age.12680
dc.identifier.endpage7
dc.identifier.issn0268-9146
dc.identifier.issn1365-2052
dc.identifier.journaltitleAnimal Geneticsen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/6948
dc.language.isoenen
dc.publisherBlackwell Publishing Ltden
dc.relation.projectinfo:eu-repo/grantAgreement/EC/H2020::MSCA-IF-EF-ST/653216/EU/Understanding how selection for body weight in mouse operates at the RNA level/MICEXPRESS
dc.relation.urihttps://onlinelibrary.wiley.com/doi/abs/10.1111/age.12680
dc.rights© 2018, the Authors. Animal Genetics published by John Wiley & Sons Ltd on behalf of Stichting International Foundation for Animal Genetics. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAquaculture breedingen
dc.subjectGenetic heterogeneity of environmental varianceen
dc.subjectNile tilapia resilienceen
dc.titleBreeding for robustness: Investigating the genotype-by-environment interaction and micro-environmental sensitivity of Genetically Improved Farmed Tilapia (Oreochromis niloticus)en
dc.typeArticle (peer-reviewed)en
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