Putative selected markers in the Chionodraco genus detected by interspecific outlier tests
The identification of loci under selection (outliers) is a major challenge in evolutionary biology, being critical to comprehend evolutionary processes leading to population differentiation and speciation, and for conservation purposes, also in light of recent climate change. However, detection of s...
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ftunivpadovairis:oai:www.research.unipd.it:11577/2695095 2024-04-21T07:47:10+00:00 Putative selected markers in the Chionodraco genus detected by interspecific outlier tests AGOSTINI, CECILIA PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO MARINO, ILARIA ANNA MARIA Felix C. Mark Agostini, Cecilia Papetti, Chiara Patarnello, Tomaso Felix C., Mark Zane, Lorenzo Marino, ILARIA ANNA MARIA 2013 STAMPA http://hdl.handle.net/11577/2695095 https://doi.org/10.1007/s00300-013-1370-0 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000324142700011 volume:36 firstpage:1509 lastpage:1518 numberofpages:10 journal:POLAR BIOLOGY http://hdl.handle.net/11577/2695095 doi:10.1007/s00300-013-1370-0 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84883750836 Genome-wide selection scan genetic differentiation local adaptation EST-linked microsatellite Standardized Fst Antarctic icefish info:eu-repo/semantics/article 2013 ftunivpadovairis https://doi.org/10.1007/s00300-013-1370-0 2024-03-28T01:53:24Z The identification of loci under selection (outliers) is a major challenge in evolutionary biology, being critical to comprehend evolutionary processes leading to population differentiation and speciation, and for conservation purposes, also in light of recent climate change. However, detection of selected loci can be difficult when populations are weakly differentiated. This is the case of marine fish populations, often characterized by high levels of gene flow and connectivity, and particularly of fish living in the Antarctic marine environment, characterized by a complex and strong circulating system promoting individual dispersal all around the continent. With the final aim of identifying outlier loci putatively under selection in the Chionodraco genus, we used 21 microsatellites, including both genomic (Type II) and EST-linked loci (Type I), to investigate the genetic differentiation among the three recently derived Chionodraco species that are endemic to the freezing Antarctic waters. Neutrality tests were applied in interspecific comparisons in order to identify candidate loci showing high levels of genetic differentiation, which might reveal imprints of past selection. Three outlier loci were identified, detecting a higher differentiation between species than did neutral loci. Outliers showed sequence similarity to a calmodulin gene, to an antifreeze glycoprotein/trypsinogen-like protease gene and to nonannotated fish mRNAs. Selective pressures acting on outlier loci identified in this study might reflect past evolutionary processes, which led to species divergence and local adaptation in the Chionodraco genus. Used loci will provide a valuable tool for future population genetic studies in Antarctic notothenioids. Article in Journal/Newspaper Antarc* Antarctic Icefish Padua Research Archive (IRIS - Università degli Studi di Padova) Polar Biology 36 10 1509 1518 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Genome-wide selection scan genetic differentiation local adaptation EST-linked microsatellite Standardized Fst Antarctic icefish |
spellingShingle |
Genome-wide selection scan genetic differentiation local adaptation EST-linked microsatellite Standardized Fst Antarctic icefish AGOSTINI, CECILIA PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO MARINO, ILARIA ANNA MARIA Felix C. Mark Putative selected markers in the Chionodraco genus detected by interspecific outlier tests |
topic_facet |
Genome-wide selection scan genetic differentiation local adaptation EST-linked microsatellite Standardized Fst Antarctic icefish |
description |
The identification of loci under selection (outliers) is a major challenge in evolutionary biology, being critical to comprehend evolutionary processes leading to population differentiation and speciation, and for conservation purposes, also in light of recent climate change. However, detection of selected loci can be difficult when populations are weakly differentiated. This is the case of marine fish populations, often characterized by high levels of gene flow and connectivity, and particularly of fish living in the Antarctic marine environment, characterized by a complex and strong circulating system promoting individual dispersal all around the continent. With the final aim of identifying outlier loci putatively under selection in the Chionodraco genus, we used 21 microsatellites, including both genomic (Type II) and EST-linked loci (Type I), to investigate the genetic differentiation among the three recently derived Chionodraco species that are endemic to the freezing Antarctic waters. Neutrality tests were applied in interspecific comparisons in order to identify candidate loci showing high levels of genetic differentiation, which might reveal imprints of past selection. Three outlier loci were identified, detecting a higher differentiation between species than did neutral loci. Outliers showed sequence similarity to a calmodulin gene, to an antifreeze glycoprotein/trypsinogen-like protease gene and to nonannotated fish mRNAs. Selective pressures acting on outlier loci identified in this study might reflect past evolutionary processes, which led to species divergence and local adaptation in the Chionodraco genus. Used loci will provide a valuable tool for future population genetic studies in Antarctic notothenioids. |
author2 |
Agostini, Cecilia Papetti, Chiara Patarnello, Tomaso Felix C., Mark Zane, Lorenzo Marino, ILARIA ANNA MARIA |
format |
Article in Journal/Newspaper |
author |
AGOSTINI, CECILIA PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO MARINO, ILARIA ANNA MARIA Felix C. Mark |
author_facet |
AGOSTINI, CECILIA PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO MARINO, ILARIA ANNA MARIA Felix C. Mark |
author_sort |
AGOSTINI, CECILIA |
title |
Putative selected markers in the Chionodraco genus detected by interspecific outlier tests |
title_short |
Putative selected markers in the Chionodraco genus detected by interspecific outlier tests |
title_full |
Putative selected markers in the Chionodraco genus detected by interspecific outlier tests |
title_fullStr |
Putative selected markers in the Chionodraco genus detected by interspecific outlier tests |
title_full_unstemmed |
Putative selected markers in the Chionodraco genus detected by interspecific outlier tests |
title_sort |
putative selected markers in the chionodraco genus detected by interspecific outlier tests |
publishDate |
2013 |
url |
http://hdl.handle.net/11577/2695095 https://doi.org/10.1007/s00300-013-1370-0 |
genre |
Antarc* Antarctic Icefish |
genre_facet |
Antarc* Antarctic Icefish |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000324142700011 volume:36 firstpage:1509 lastpage:1518 numberofpages:10 journal:POLAR BIOLOGY http://hdl.handle.net/11577/2695095 doi:10.1007/s00300-013-1370-0 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84883750836 |
op_doi |
https://doi.org/10.1007/s00300-013-1370-0 |
container_title |
Polar Biology |
container_volume |
36 |
container_issue |
10 |
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1509 |
op_container_end_page |
1518 |
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1796945667439984640 |