Managing Polyploidy in Ex Situ Conservation Genetics: The Case of the Critically Endangered Adriatic Sturgeon (Acipenser naccarii)
Identifieur interne : 000048 ( Pmc/Curation ); précédent : 000047; suivant : 000049Managing Polyploidy in Ex Situ Conservation Genetics: The Case of the Critically Endangered Adriatic Sturgeon (Acipenser naccarii)
Auteurs : Leonardo Congiu [Italie] ; Jose Martin Pujolar [Italie] ; Anna Forlani [Italie] ; Silvia Cenadelli [Italie] ; Isabelle Dupanloup [Suisse] ; Federica Barbisan [Italie] ; Andrea Galli [Italie] ; Francesco Fontana [Italie]Source :
- PLoS ONE [ 1932-6203 ] ; 2011.
Abstract
While the current expansion of conservation genetics enables to address more efficiently the management of threatened species, alternative methods for genetic relatedness data analysis in polyploid species are necessary. Within this framework, we present a standardized and simple protocol specifically designed for polyploid species that can facilitate management of genetic diversity, as exemplified by the ex situ conservation program for the tetraploid Adriatic sturgeon
Url:
DOI: 10.1371/journal.pone.0018249
PubMed: 21483472
PubMed Central: 3066226
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Conservation Genetics: The Case of the Critically Endangered Adriatic Sturgeon (<italic>Acipenser naccarii</italic>
)</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Managing Polyploidy in <italic>Ex Situ</italic>
Conservation Genetics: The Case of the Critically Endangered Adriatic Sturgeon (<italic>Acipenser naccarii</italic>
)</title>
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<front><div type="abstract" xml:lang="en"><p>While the current expansion of conservation genetics enables to address more efficiently the management of threatened species, alternative methods for genetic relatedness data analysis in polyploid species are necessary. Within this framework, we present a standardized and simple protocol specifically designed for polyploid species that can facilitate management of genetic diversity, as exemplified by the ex situ conservation program for the tetraploid Adriatic sturgeon <italic>Acipenser naccarii</italic>
. A critically endangered endemic species of the Adriatic Sea tributaries, its persistence is strictly linked to the <italic>ex situ</italic>
conservation of a single captive broodstock currently decimated to about 25 individuals, which represents the last remaining population of Adriatic sturgeon of certain wild origin. The genetic variability of three F1 broodstocks available as future breeders was estimated based on mitochondrial and microsatellite information and compared with the variability of the parental generation. Genetic data showed that the F1 stocks have only retained part of the genetic variation present in the original stock due to the few parent pairs used as founders. This prompts for the urgent improvement of the current F1 stocks by incorporating new founders that better represent the genetic diversity available. Following parental allocation based on band sharing values, we set up a user-friendly tool for selection of candidate breeders according to relatedness between all possible parent-pairs that secures the use of non-related individuals. The approach developed here could also be applied to other endangered tetraploid sturgeon species overexploited for caviar production, particularly in regions lacking proper infrastructure and/or expertise.</p>
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</subj-group>
<subj-group subj-group-type="Discipline-v2"><subject>Biology</subject>
<subj-group><subject>Ecology</subject>
<subj-group><subject>Biodiversity</subject>
<subject>Conservation Science</subject>
<subject>Freshwater Ecology</subject>
</subj-group>
</subj-group>
<subj-group><subject>Evolutionary Biology</subject>
<subj-group><subject>Population Genetics</subject>
<subj-group><subject>Ploidy</subject>
</subj-group>
</subj-group>
<subj-group><subject>Evolutionary Ecology</subject>
</subj-group>
</subj-group>
<subj-group><subject>Genetics</subject>
</subj-group>
</subj-group>
</article-categories>
<title-group><article-title>Managing Polyploidy in <italic>Ex Situ</italic>
Conservation Genetics: The Case of the Critically Endangered Adriatic Sturgeon (<italic>Acipenser naccarii</italic>
)</article-title>
<alt-title alt-title-type="running-head">Conservation of the Polyploid Adriatic Sturgeon</alt-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Congiu</surname>
<given-names>Leonardo</given-names>
</name>
<xref ref-type="aff" rid="aff1"><sup>1</sup>
</xref>
<xref ref-type="corresp" rid="cor1"><sup>*</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Pujolar</surname>
<given-names>Jose Martin</given-names>
</name>
<xref ref-type="aff" rid="aff1"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Forlani</surname>
<given-names>Anna</given-names>
</name>
<xref ref-type="aff" rid="aff1"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Cenadelli</surname>
<given-names>Silvia</given-names>
</name>
<xref ref-type="aff" rid="aff2"><sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Dupanloup</surname>
<given-names>Isabelle</given-names>
</name>
<xref ref-type="aff" rid="aff3"><sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Barbisan</surname>
<given-names>Federica</given-names>
</name>
<xref ref-type="aff" rid="aff1"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Galli</surname>
<given-names>Andrea</given-names>
</name>
<xref ref-type="aff" rid="aff2"><sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Fontana</surname>
<given-names>Francesco</given-names>
</name>
<xref ref-type="aff" rid="aff4"><sup>4</sup>
</xref>
</contrib>
</contrib-group>
<aff id="aff1"><label>1</label>
<addr-line>Dipartimento di Biologia, Università di Padova, Padova, Italy</addr-line>
</aff>
<aff id="aff2"><label>2</label>
<addr-line>Istituto Sperimentale Lazzaro Spallanzani, Rivolta d'Adda, Italy</addr-line>
</aff>
<aff id="aff3"><label>3</label>
<addr-line>Institute of Ecology and Evolution, University of Bern, Bern, Switzerland</addr-line>
</aff>
<aff id="aff4"><label>4</label>
<addr-line>Dipartimento di Biologia, Università di Ferrara, Ferrara, Italy</addr-line>
</aff>
<contrib-group><contrib contrib-type="editor"><name><surname>Joly</surname>
<given-names>Simon</given-names>
</name>
<role>Editor</role>
<xref ref-type="aff" rid="edit1"></xref>
</contrib>
</contrib-group>
<aff id="edit1">Montreal Botanical Garden, Canada</aff>
<author-notes><corresp id="cor1">* E-mail: <email>leonardo.congiu@unipd.it</email>
</corresp>
<fn fn-type="con"><p>Conceived and designed the experiments: LC. Performed the experiments: AF SC FB. Analyzed the data: LC ID AG. Contributed reagents/materials/analysis tools: LC FF. Wrote the paper: LC MP. Designed the software used in analysis: ID.</p>
</fn>
</author-notes>
<pub-date pub-type="collection"><year>2011</year>
</pub-date>
<pub-date pub-type="epub"><day>29</day>
<month>3</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="ecorrected"><day>31
</day>
<month>3</month>
<year>2011</year>
</pub-date>
<volume>6</volume>
<issue>3</issue>
<elocation-id>e18249</elocation-id>
<history><date date-type="received"><day>25</day>
<month>10</month>
<year>2010</year>
</date>
<date date-type="accepted"><day>1</day>
<month>3</month>
<year>2011</year>
</date>
</history>
<permissions><copyright-statement>Congiu et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</copyright-statement>
</permissions>
<abstract><p>While the current expansion of conservation genetics enables to address more efficiently the management of threatened species, alternative methods for genetic relatedness data analysis in polyploid species are necessary. Within this framework, we present a standardized and simple protocol specifically designed for polyploid species that can facilitate management of genetic diversity, as exemplified by the ex situ conservation program for the tetraploid Adriatic sturgeon <italic>Acipenser naccarii</italic>
. A critically endangered endemic species of the Adriatic Sea tributaries, its persistence is strictly linked to the <italic>ex situ</italic>
conservation of a single captive broodstock currently decimated to about 25 individuals, which represents the last remaining population of Adriatic sturgeon of certain wild origin. The genetic variability of three F1 broodstocks available as future breeders was estimated based on mitochondrial and microsatellite information and compared with the variability of the parental generation. Genetic data showed that the F1 stocks have only retained part of the genetic variation present in the original stock due to the few parent pairs used as founders. This prompts for the urgent improvement of the current F1 stocks by incorporating new founders that better represent the genetic diversity available. Following parental allocation based on band sharing values, we set up a user-friendly tool for selection of candidate breeders according to relatedness between all possible parent-pairs that secures the use of non-related individuals. The approach developed here could also be applied to other endangered tetraploid sturgeon species overexploited for caviar production, particularly in regions lacking proper infrastructure and/or expertise.</p>
</abstract>
<counts><page-count count="10"></page-count>
</counts>
</article-meta>
</front>
</pmc>
</record>
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