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dc.contributor.authorDenoël, Mathieu
dc.date.accessioned2019-01-09T21:28:57Z
dc.date.available2019-01-09T21:28:57Z
dc.date.issued2018
dc.identifier.citationDenoël, M. (2018). Intraspecific diversity, a hidden decline: A focus on paedomorphic newts in the context of fish introductions. 5th European Congress of Conservation Biology. doi: 10.17011/conference/eccb2018/107225
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/61780
dc.description.abstractIntraspecific variation such as polymorphisms, significant evolutionary units, and local adaptations are essential parts of biodiversity. However, conservation assessments and guidelines usually focus on the species level making therefore intraspecific variability less considered. This is particularly the case for common species that are far from extinction but not from intraspecific homogenization. Facultative paedomorphosis is a polymorphism expressed in some newt populations and which is considered of major importance in both micro and macro-evolution. Whereas most localities have only metamorphosing individuals, some have also individuals remaining aquatic all their life by retaining larval traits such as gills at the adult stage. By doing long-term surveys in the main facultative paedomorphic populations of three newt species in ponds and lakes across several European countries, we showed that paedomorphs became extirpated from most sites during the last decades (1-3). The common phenotype, the metamorph, often persisted but also declined and sometimes disappeared afterwards. The main frequent cause of decline was the introduction of alien species, specifically fish. There is some hope as resilience of paedomorphs was shown in ponds, but not yet in lakes suggesting a possible definitive loss of paedomorphosis. Globally, the situation is dramatic, particularly in a few Balkan countries where all the main populations of paedomorphs, i.e. those that received a subspecific status, disappeared from the only mountain lakes where they were described. Consequently, both management actions to remove threats, such as alien fish, and an improvement of tools to preserve intraspecific diversity of common species are urgently needed. Cited references: 1. Denoël M, Džukić G, Kalezić ML. 2005. Effect of widespread fish introductions on paedomorphic newts in Europe. Conservation Biology 19:162-170. 2. Denoël M, Ficetola GF, Ćirović R, Radović D, Džukić G, Kalezić ML, Vukov TD. 2009. A multi-scale approach to facultative padomorphosis of European newts in the Montenegrin karst: distribution pattern, environmental variables and conservation. Biological Conservation 142:509-517. 3. Denoël M, Winandy L. 2015. The importance of phenotype diversity in conservation: Resilience of palmate newt morphotypes after fish removal in Larzac ponds (France). Biological Conservation 192:402-408.
dc.format.mimetypetext/html
dc.language.isoeng
dc.publisherOpen Science Centre, University of Jyväskylä
dc.relation.urihttps://peerageofscience.org/conference/eccb2018/107225/
dc.rightsCC BY 4.0
dc.titleIntraspecific diversity, a hidden decline: A focus on paedomorphic newts in the context of fish introductions
dc.typeArticle
dc.type.urihttp://purl.org/eprint/type/ConferenceItem
dc.identifier.doi10.17011/conference/eccb2018/107225
dc.type.coarconference paper not in proceedings
dc.description.reviewstatuspeerReviewed
dc.type.versionpublishedVersion
dc.rights.copyright© the Authors, 2018
dc.rights.accesslevelopenAccess
dc.type.publicationconferenceObject
dc.relation.conferenceECCB2018: 5th European Congress of Conservation Biology. 12th - 15th of June 2018, Jyväskylä, Finland
dc.format.contentfulltext
dc.rights.urlhttp://creativecommons.org/licenses/by/4.0/


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    5th European Congress of Conservation Biology. 12th - 15th of June 2018, Jyväskylä, Finland

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