{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T08:53:04Z","timestamp":1765961584371,"version":"build-2065373602"},"reference-count":58,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,9,21]],"date-time":"2022-09-21T00:00:00Z","timestamp":1663718400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Foundation for Science and Technology","award":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"],"award-info":[{"award-number":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"]}]},{"name":"European Union LIFE program","award":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"],"award-info":[{"award-number":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"]}]},{"DOI":"10.13039\/501100001871","name":"Foundation for Science and Technology through the strategic plan of the Marine and Environmental Sciences Centre (MARE)","doi-asserted-by":"publisher","award":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"],"award-info":[{"award-number":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Centre for Ecology, Evolution, and Environmental Changes (cE3c)","award":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"],"award-info":[{"award-number":["LIFE13\/NAT\/PT\/000786","UIDB\/04292\/2020","UIDB\/00329\/2020","UIDP\/00329\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Fishes"],"abstract":"<jats:p>Hybridization between native and nonnative fish species is a major conservation issue, especially in ecosystems with high levels of endemism, such as Iberian streams. To date, hybridization with the invasive bleak Alburnus alburnus has been reported for the Iberian chub Squalius alburnoides and S. pyrenaicus and in scattered locations only. However, the bleak is spreading in the region, potentially increasing the risks of hybridization with other Squalius species. To gather a more comprehensive picture on the current geography of hybridization, we compiled records on hybrids between bleak and chub in Portugal and conducted genetical assessments of hybrids between bleak and S. carolitertii. We found that hybridization with bleak is widespread throughout Portuguese river basins and involves at least S. alburnoides, S. pyrenaicus and S. carolitertii. Hybridization with bleak may not only cause waste of reproductive effort and damage the genetic integrity of these endemic species but also promote shifts in the reproductive dynamics of the S. alburnoides hybrid complex, which includes individuals with various ploidy levels and combinations of parental genomes, reproducing sexually and asexually. We recommend that future studies characterize the fitness of bleak hybrids and their ecological and genetic interactions with native fish, in order to design effective conservation measures.<\/jats:p>","DOI":"10.3390\/fishes7050247","type":"journal-article","created":{"date-parts":[[2022,9,21]],"date-time":"2022-09-21T21:22:23Z","timestamp":1663795343000},"page":"247","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Widespread Hybridization between Invasive Bleak (Alburnus alburnus) and Iberian Chub (Squalius spp.): A Neglected Conservation Threat"],"prefix":"10.3390","volume":"7","author":[{"given":"Manuel","family":"Curto","sequence":"first","affiliation":[{"name":"MARE\u2014Marine and Environmental Sciences Centre\/ARNET\u2014Aquatic Research Network, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"}]},{"given":"Miguel","family":"Morgado-Santos","sequence":"additional","affiliation":[{"name":"MARE\u2014Marine and Environmental Sciences Centre\/ARNET\u2014Aquatic Research Network, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"}]},{"given":"Carlos M.","family":"Alexandre","sequence":"additional","affiliation":[{"name":"MARE\u2014Marine and Environmental Sciences Centre\/ARNET\u2014Aquatic Research Network, Institute for Research and Advanced Training (IIFA), University of \u00c9vora, 7002-554 \u00c9vora, Portugal"}]},{"given":"Maria Judite","family":"Alves","sequence":"additional","affiliation":[{"name":"MUHNAC\u2014National Museum of Natural History and Science, University of Lisbon, 1250-102 Lisbon, Portugal"},{"name":"cE3c\u2014Centre for Ecology, Evolution and Environmental Change, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"}]},{"given":"Hugo F.","family":"Gante","sequence":"additional","affiliation":[{"name":"cE3c\u2014Centre for Ecology, Evolution and Environmental Change, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"},{"name":"Fish Eco-Evo-Devo and Conservation Lab, KU Leuven, Charles Deberiotstraat 32\u2014Box 2439, 3000 Leuven, Belgium"},{"name":"Royal Museum for Central Africa, Section Vertebrates, Biology Department, Leuvensesteenweg 17, 3080 Tervuren, Belgium"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9863-2289","authenticated-orcid":false,"given":"Christos","family":"Gkenas","sequence":"additional","affiliation":[{"name":"MARE\u2014Marine and Environmental Sciences Centre\/ARNET\u2014Aquatic Research Network, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"}]},{"given":"Jo\u00e3o P.","family":"Medeiros","sequence":"additional","affiliation":[{"name":"MARE\u2014Marine and Environmental Sciences Centre\/ARNET\u2014Aquatic Research Network, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4302-1958","authenticated-orcid":false,"given":"Paulo J.","family":"Pinheiro","sequence":"additional","affiliation":[{"name":"AQUALOGUS, Engineering and Environment Lda, Rua do Mar da China 1, Office 2.4, Parque das Na\u00e7\u00f5es, 1990-137 Lisbon, Portugal"}]},{"given":"Pedro R.","family":"Almeida","sequence":"additional","affiliation":[{"name":"MARE\u2014Marine and Environmental Sciences Centre\/ARNET\u2014Aquatic Research Network, Institute for Research and Advanced Training (IIFA), University of \u00c9vora, 7002-554 \u00c9vora, Portugal"},{"name":"Department of Biology, School of Science and Technology, University of \u00c9vora, 7004-516 \u00c9vora, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7308-2279","authenticated-orcid":false,"given":"Maria Filomena","family":"Magalh\u00e3es","sequence":"additional","affiliation":[{"name":"cE3c\u2014Centre for Ecology, Evolution and Environmental Change, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"}]},{"given":"Filipe","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"MARE\u2014Marine and Environmental Sciences Centre\/ARNET\u2014Aquatic Research Network, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"133","DOI":"10.1016\/0169-5347(93)90025-K","article-title":"Biological Invasions: Lessons for Ecology","volume":"8","author":"Lodge","year":"1993","journal-title":"Trends Ecol. 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