IBSEM: an individual-based Atlantic salmon population model
Ecology and genetics can influence the fate of individuals and populations in multiple ways. However, to date, few studies consider them when modelling the evolutionary trajectory of populations faced with admixture with non-local populatons. For the Atlantic salmon, a model incorporating these elem...
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ftiiasalaxendare:oai:pure.iiasa.ac.at:11331 2023-05-15T15:30:50+02:00 IBSEM: an individual-based Atlantic salmon population model Castellani, M. Heino, M. Gilbey, J. Araki, H. Svasand, T. Glover, K.A. 2015-09 text http://pure.iiasa.ac.at/id/eprint/11331/ http://pure.iiasa.ac.at/id/eprint/11331/1/IBSEM%20An%20Individual-Based%20Atlantic%20Salmon%20Population%20Model.PDF en eng Public Library of Science (PLoS) http://pure.iiasa.ac.at/id/eprint/11331/1/IBSEM%20An%20Individual-Based%20Atlantic%20Salmon%20Population%20Model.PDF Castellani, M., Heino, M. <http://pure.iiasa.ac.at/view/iiasa/122.html> orcid:0000-0003-2928-3940 , Gilbey, J., Araki, H., Svasand, T., & Glover, K.A. (2015). IBSEM: an individual-based Atlantic salmon population model. PLoS ONE 10 (9) e0138444. 10.1371/journal.pone.0138444 <https://doi.org/10.1371/journal.pone.0138444>. cc_by CC-BY Article PeerReviewed 2015 ftiiasalaxendare 2022-04-15T12:35:10Z Ecology and genetics can influence the fate of individuals and populations in multiple ways. However, to date, few studies consider them when modelling the evolutionary trajectory of populations faced with admixture with non-local populatons. For the Atlantic salmon, a model incorporating these elements is urgently needed because many populations are challenged with gene-flow from non-local and domesticated conspecifics. We developed an Individual-Based Salmon Eco-genetic Model (IBSEM) to simulate the demogaphic and population genetic change of an Atlantic salmon population through its entire life-cycle. Processes such as growth, mortality, and maturation are simulated through stochastic procedures, which take into account environmental variables as well as the genotype of the individuals. IBSEM is based upon detailed empirical data from salmon biology, and parameterized to reproduce the environmental conditions and the characteristics of a wild population inhabiting a Norwegian river. Simulations demonstrated that the model consistently and reliably reproduces the characteristics of the population. Moreover, in absence of farmed escapees, the modelled populations each an evolutionary equilibrium that is similar to our definition of a 'wild' genotype. We assessed the sensitivity of the model in the face of assumptions made on the fitness differences between farm and wild salmon, and evaluated the role of straying as a buffering mechanism against the intrusion of farm genes into wild populations. These results demonstrate that IBSEM is able to capture the evolutionary forces shaping the life history of wild salmon and is therefore able to model the response of populations under environmental and genetic stressors. Article in Journal/Newspaper Atlantic salmon IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis) |
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IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis) |
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ftiiasalaxendare |
language |
English |
description |
Ecology and genetics can influence the fate of individuals and populations in multiple ways. However, to date, few studies consider them when modelling the evolutionary trajectory of populations faced with admixture with non-local populatons. For the Atlantic salmon, a model incorporating these elements is urgently needed because many populations are challenged with gene-flow from non-local and domesticated conspecifics. We developed an Individual-Based Salmon Eco-genetic Model (IBSEM) to simulate the demogaphic and population genetic change of an Atlantic salmon population through its entire life-cycle. Processes such as growth, mortality, and maturation are simulated through stochastic procedures, which take into account environmental variables as well as the genotype of the individuals. IBSEM is based upon detailed empirical data from salmon biology, and parameterized to reproduce the environmental conditions and the characteristics of a wild population inhabiting a Norwegian river. Simulations demonstrated that the model consistently and reliably reproduces the characteristics of the population. Moreover, in absence of farmed escapees, the modelled populations each an evolutionary equilibrium that is similar to our definition of a 'wild' genotype. We assessed the sensitivity of the model in the face of assumptions made on the fitness differences between farm and wild salmon, and evaluated the role of straying as a buffering mechanism against the intrusion of farm genes into wild populations. These results demonstrate that IBSEM is able to capture the evolutionary forces shaping the life history of wild salmon and is therefore able to model the response of populations under environmental and genetic stressors. |
format |
Article in Journal/Newspaper |
author |
Castellani, M. Heino, M. Gilbey, J. Araki, H. Svasand, T. Glover, K.A. |
spellingShingle |
Castellani, M. Heino, M. Gilbey, J. Araki, H. Svasand, T. Glover, K.A. IBSEM: an individual-based Atlantic salmon population model |
author_facet |
Castellani, M. Heino, M. Gilbey, J. Araki, H. Svasand, T. Glover, K.A. |
author_sort |
Castellani, M. |
title |
IBSEM: an individual-based Atlantic salmon population model |
title_short |
IBSEM: an individual-based Atlantic salmon population model |
title_full |
IBSEM: an individual-based Atlantic salmon population model |
title_fullStr |
IBSEM: an individual-based Atlantic salmon population model |
title_full_unstemmed |
IBSEM: an individual-based Atlantic salmon population model |
title_sort |
ibsem: an individual-based atlantic salmon population model |
publisher |
Public Library of Science (PLoS) |
publishDate |
2015 |
url |
http://pure.iiasa.ac.at/id/eprint/11331/ http://pure.iiasa.ac.at/id/eprint/11331/1/IBSEM%20An%20Individual-Based%20Atlantic%20Salmon%20Population%20Model.PDF |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
http://pure.iiasa.ac.at/id/eprint/11331/1/IBSEM%20An%20Individual-Based%20Atlantic%20Salmon%20Population%20Model.PDF Castellani, M., Heino, M. <http://pure.iiasa.ac.at/view/iiasa/122.html> orcid:0000-0003-2928-3940 , Gilbey, J., Araki, H., Svasand, T., & Glover, K.A. (2015). IBSEM: an individual-based Atlantic salmon population model. PLoS ONE 10 (9) e0138444. 10.1371/journal.pone.0138444 <https://doi.org/10.1371/journal.pone.0138444>. |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
_version_ |
1766361306831519744 |