Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity
Population genetic analyses have been highly successful in predicting inter- and intraspecific evolutionary relationships, levels of gene flow, genetic divergence, and effective population sizes. Parameters estimated are evolutionary averages and are therefore relevant for addressing contemporary ec...
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Online Access: | http://hdl.handle.net/11615/27400 https://doi.org/10.1093/icesjms/fsm086 |
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ftunivthessaly:oai:ir.lib.uth.gr:11615/27400 2023-05-15T15:32:51+02:00 Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity Exadactylos, A. Rigby, M. J. Geffen, A. J. Thorpe, J. P. 2007 http://hdl.handle.net/11615/27400 https://doi.org/10.1093/icesjms/fsm086 unknown doi:10.1093/icesjms/fsm086 1054-3139 http://hdl.handle.net/11615/27400 <Go to ISI>://WOS:000250937800010 conservation genetics flatfish genetic diversity hatchery stocks natural populations BIOLOGICAL CONSERVATION PHYLOGENETIC TREES VIABILITY ANALYSIS ALLOZYME VARIATION ATLANTIC SALMON HATCHERY SPECIATION DEMOGRAPHY DISTANCE MODELS Fisheries Marine & Freshwater Biology Oceanography journalArticle 2007 ftunivthessaly https://doi.org/10.1093/icesjms/fsm086 2021-07-02T06:22:26Z Population genetic analyses have been highly successful in predicting inter- and intraspecific evolutionary relationships, levels of gene flow, genetic divergence, and effective population sizes. Parameters estimated are evolutionary averages and are therefore relevant for addressing contemporary ecological or conservation issues. Changes in genetic variation within the range of a species may indicate patterns of population structure resulting from past ecological and demographic events that are otherwise difficult to infer, so may provide an insight into evolutionary development. Genetic data, drawn from 14 enzyme loci amplified from two populations of turbot (Scophthalmus maximus) and five populations of Dover sole (Solea solea) from the Irish Sea were used to examine population structure estimated from measures of genetic diversity. The aim was to provide an empirical assessment of whether artificial propagation poses a genetic threat to conservation of naturally spawning populations, and whether the fitness for natural spawning and rearing can be rapidly and substantially reduced or increased by artificial propagation. Because of prolonged overfishing, turbot and sole populations in the region are below natural levels, and survive in small local populations in fragmented habitats. Genetic data derived from allozymes have shown that populations are characterized by relatively low levels of genetic diversity. A hypothetical model supporting genetic population substructure, such as range expansion with founder-flush effects, and subsequent population decline with small effective population sizes was considered. Observations support our belief that conservation measures based on genetic diversity have to be developed to ensure the survival of this diverse gene pool. Article in Journal/Newspaper Atlantic salmon Scophthalmus maximus Turbot University of Thessaly Institutional Repository Dover ENVELOPE(-55.753,-55.753,-83.777,-83.777) ICES Journal of Marine Science 64 6 1173 1181 |
institution |
Open Polar |
collection |
University of Thessaly Institutional Repository |
op_collection_id |
ftunivthessaly |
language |
unknown |
topic |
conservation genetics flatfish genetic diversity hatchery stocks natural populations BIOLOGICAL CONSERVATION PHYLOGENETIC TREES VIABILITY ANALYSIS ALLOZYME VARIATION ATLANTIC SALMON HATCHERY SPECIATION DEMOGRAPHY DISTANCE MODELS Fisheries Marine & Freshwater Biology Oceanography |
spellingShingle |
conservation genetics flatfish genetic diversity hatchery stocks natural populations BIOLOGICAL CONSERVATION PHYLOGENETIC TREES VIABILITY ANALYSIS ALLOZYME VARIATION ATLANTIC SALMON HATCHERY SPECIATION DEMOGRAPHY DISTANCE MODELS Fisheries Marine & Freshwater Biology Oceanography Exadactylos, A. Rigby, M. J. Geffen, A. J. Thorpe, J. P. Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity |
topic_facet |
conservation genetics flatfish genetic diversity hatchery stocks natural populations BIOLOGICAL CONSERVATION PHYLOGENETIC TREES VIABILITY ANALYSIS ALLOZYME VARIATION ATLANTIC SALMON HATCHERY SPECIATION DEMOGRAPHY DISTANCE MODELS Fisheries Marine & Freshwater Biology Oceanography |
description |
Population genetic analyses have been highly successful in predicting inter- and intraspecific evolutionary relationships, levels of gene flow, genetic divergence, and effective population sizes. Parameters estimated are evolutionary averages and are therefore relevant for addressing contemporary ecological or conservation issues. Changes in genetic variation within the range of a species may indicate patterns of population structure resulting from past ecological and demographic events that are otherwise difficult to infer, so may provide an insight into evolutionary development. Genetic data, drawn from 14 enzyme loci amplified from two populations of turbot (Scophthalmus maximus) and five populations of Dover sole (Solea solea) from the Irish Sea were used to examine population structure estimated from measures of genetic diversity. The aim was to provide an empirical assessment of whether artificial propagation poses a genetic threat to conservation of naturally spawning populations, and whether the fitness for natural spawning and rearing can be rapidly and substantially reduced or increased by artificial propagation. Because of prolonged overfishing, turbot and sole populations in the region are below natural levels, and survive in small local populations in fragmented habitats. Genetic data derived from allozymes have shown that populations are characterized by relatively low levels of genetic diversity. A hypothetical model supporting genetic population substructure, such as range expansion with founder-flush effects, and subsequent population decline with small effective population sizes was considered. Observations support our belief that conservation measures based on genetic diversity have to be developed to ensure the survival of this diverse gene pool. |
format |
Article in Journal/Newspaper |
author |
Exadactylos, A. Rigby, M. J. Geffen, A. J. Thorpe, J. P. |
author_facet |
Exadactylos, A. Rigby, M. J. Geffen, A. J. Thorpe, J. P. |
author_sort |
Exadactylos, A. |
title |
Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity |
title_short |
Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity |
title_full |
Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity |
title_fullStr |
Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity |
title_full_unstemmed |
Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity |
title_sort |
conservation aspects of natural populations and captive-bred stocks of turbot (scophthalmus maximus) and dover sole (solea solea) using estimates of genetic diversity |
publishDate |
2007 |
url |
http://hdl.handle.net/11615/27400 https://doi.org/10.1093/icesjms/fsm086 |
long_lat |
ENVELOPE(-55.753,-55.753,-83.777,-83.777) |
geographic |
Dover |
geographic_facet |
Dover |
genre |
Atlantic salmon Scophthalmus maximus Turbot |
genre_facet |
Atlantic salmon Scophthalmus maximus Turbot |
op_source |
<Go to ISI>://WOS:000250937800010 |
op_relation |
doi:10.1093/icesjms/fsm086 1054-3139 http://hdl.handle.net/11615/27400 |
op_doi |
https://doi.org/10.1093/icesjms/fsm086 |
container_title |
ICES Journal of Marine Science |
container_volume |
64 |
container_issue |
6 |
container_start_page |
1173 |
op_container_end_page |
1181 |
_version_ |
1766363331606609920 |