Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax
Abstract Hybridization dynamics between co‐occurring species in environments where human‐mediated changes take place are important to quantify for furthering our understanding of human impacts on species evolution and for informing management. The allis shad Alosa alosa (Linnaeus, 1758) and twaite s...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-04-01
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| Series: | Evolutionary Applications |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/eva.12889 |
| _version_ | 1818027151774973952 |
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| author | Laura Taillebois Stephen Sabatino Aurélie Manicki Françoise Daverat David José Nachón Olivier Lepais |
| author_facet | Laura Taillebois Stephen Sabatino Aurélie Manicki Françoise Daverat David José Nachón Olivier Lepais |
| author_sort | Laura Taillebois |
| collection | DOAJ |
| description | Abstract Hybridization dynamics between co‐occurring species in environments where human‐mediated changes take place are important to quantify for furthering our understanding of human impacts on species evolution and for informing management. The allis shad Alosa alosa (Linnaeus, 1758) and twaite shad Alosa fallax (Lacépède, 1803), two clupeids sister species, have been severely impacted by human activities across Europe. The shrinkage of A. alosa distribution range along with the decline of the remaining populations' abundance threatens its persistence. The main objective was to evaluate the extent of hybridization and introgression between those interacting species. We developed a set of 77 species‐specific SNP loci that allowed a better resolution than morphological traits as they enabled the detection of hybrids up to the third generation. Variable rates of contemporary hybridization and introgression patterns were detected in 12 studied sites across the French Atlantic coast. Mitochondrial markers revealed a cyto‐nuclear discordance almost invariably involving A. alosa individuals with an A. fallax mitochondrial DNA and provided evidence of historical asymmetric introgression. Overall, contemporary and historical introgression revealed by nuclear and mitochondrial markers strongly suggests that a transfer of genes occurs from A. fallax toward A. alosa genome since at least four generations. Moreover, the outcomes of introgression greatly depend on the catchments where local processes are thought to occur. Undoubtedly, interspecific interaction and gene flow should not be overlooked when considering the management of those species. |
| first_indexed | 2024-12-10T04:43:21Z |
| format | Article |
| id | doaj.art-b8beb88dd92c4723bbbef9cc931b8165 |
| institution | Directory Open Access Journal |
| issn | 1752-4571 |
| language | English |
| last_indexed | 2024-12-10T04:43:21Z |
| publishDate | 2020-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Evolutionary Applications |
| spelling | doaj.art-b8beb88dd92c4723bbbef9cc931b81652022-12-22T02:01:50ZengWileyEvolutionary Applications1752-45712020-04-0113463665110.1111/eva.12889Variable outcomes of hybridization between declining Alosa alosa and Alosa fallaxLaura Taillebois0Stephen Sabatino1Aurélie Manicki2Françoise Daverat3David José Nachón4Olivier Lepais5ECOBIOP INRA Université de Pau et Pays de l’Adour Saint‐Pée‐sur‐Nivelle FranceCIBIO‐InBIO Universidade do Porto Vairão PortugalECOBIOP INRA Université de Pau et Pays de l’Adour Saint‐Pée‐sur‐Nivelle FranceEABX IRSTEA Cestas Cedex FranceEABX IRSTEA Cestas Cedex FranceECOBIOP INRA Université de Pau et Pays de l’Adour Saint‐Pée‐sur‐Nivelle FranceAbstract Hybridization dynamics between co‐occurring species in environments where human‐mediated changes take place are important to quantify for furthering our understanding of human impacts on species evolution and for informing management. The allis shad Alosa alosa (Linnaeus, 1758) and twaite shad Alosa fallax (Lacépède, 1803), two clupeids sister species, have been severely impacted by human activities across Europe. The shrinkage of A. alosa distribution range along with the decline of the remaining populations' abundance threatens its persistence. The main objective was to evaluate the extent of hybridization and introgression between those interacting species. We developed a set of 77 species‐specific SNP loci that allowed a better resolution than morphological traits as they enabled the detection of hybrids up to the third generation. Variable rates of contemporary hybridization and introgression patterns were detected in 12 studied sites across the French Atlantic coast. Mitochondrial markers revealed a cyto‐nuclear discordance almost invariably involving A. alosa individuals with an A. fallax mitochondrial DNA and provided evidence of historical asymmetric introgression. Overall, contemporary and historical introgression revealed by nuclear and mitochondrial markers strongly suggests that a transfer of genes occurs from A. fallax toward A. alosa genome since at least four generations. Moreover, the outcomes of introgression greatly depend on the catchments where local processes are thought to occur. Undoubtedly, interspecific interaction and gene flow should not be overlooked when considering the management of those species.https://doi.org/10.1111/eva.12889cyto‐nuclear discordancehybridizationintrogressionShadssingle nucleotide polymorphism |
| spellingShingle | Laura Taillebois Stephen Sabatino Aurélie Manicki Françoise Daverat David José Nachón Olivier Lepais Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax Evolutionary Applications cyto‐nuclear discordance hybridization introgression Shads single nucleotide polymorphism |
| title | Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax |
| title_full | Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax |
| title_fullStr | Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax |
| title_full_unstemmed | Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax |
| title_short | Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax |
| title_sort | variable outcomes of hybridization between declining alosa alosa and alosa fallax |
| topic | cyto‐nuclear discordance hybridization introgression Shads single nucleotide polymorphism |
| url | https://doi.org/10.1111/eva.12889 |
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