Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation
Speciation through homoploid hybridization (HHS) is considered extremely rare in animals. This is mainly because the establishment of reproductive isolation as a product of hybridization is uncommon. Additionally, many traits are underpinned by polygeny and/or incomplete dominance, where the hybrid...
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Online Access: | https://doi.org/10.1093/molbev/msz090 https://jlupub.ub.uni-giessen.de//handle/jlupub/153 https://doi.org/10.22029/jlupub-98 |
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ftubgiessen:oai:jlupub.ub.uni-giessen.de:jlupub/153 2024-05-12T07:56:40+00:00 Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation Masello, Juan F Quillfeldt, Petra Sandoval-Castellanos, Edson Alderman, Rachael Calderón, Luciano Cherel, Yves Cole, Theresa L Cuthbert, Richard J Marin, Manuel Massaro, Melanie Navarro, Joan Phillips, Richard A Ryan, Peter G Shepherd, Lara D Suazo, Cristián G Weimerskirch, Henri Moodley, Yoshan 2021-07-28T15:03:31Z application/pdf https://doi.org/10.1093/molbev/msz090 https://jlupub.ub.uni-giessen.de//handle/jlupub/153 https://doi.org/10.22029/jlupub-98 en eng https://doi.org/10.1093/molbev/msz090 https://jlupub.ub.uni-giessen.de//handle/jlupub/153 http://dx.doi.org/10.22029/jlupub-98 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ Procellariiformes additive traits homoploid hybrid speciation increased hybrid fitness reproductive isolation seabird ddc:570 article 2021 ftubgiessen https://doi.org/10.1093/molbev/msz09010.22029/jlupub-98 2024-04-17T09:59:53Z Speciation through homoploid hybridization (HHS) is considered extremely rare in animals. This is mainly because the establishment of reproductive isolation as a product of hybridization is uncommon. Additionally, many traits are underpinned by polygeny and/or incomplete dominance, where the hybrid phenotype is an additive blend of parental characteristics. Phenotypically intermediate hybrids are usually at a fitness disadvantage compared with parental species and tend to vanish through backcrossing with parental population(s). It is therefore unknown whether the additive nature of hybrid traits in itself could lead successfully to HHS. Using a multi-marker genetic data set and a meta-analysis of diet and morphology, we investigated a potential case of HHS in the prions (Pachyptila spp.), seabirds distinguished by their bills, prey choice, and timing of breeding. Using approximate Bayesian computation, we show that the medium-billed Salvin's prion (Pachyptila salvini) could be a hybrid between the narrow-billed Antarctic prion (Pachyptila desolata) and broad-billed prion (Pachyptila vittata). Remarkably, P. salvini's intermediate bill width has given it a feeding advantage with respect to the other Pachyptila species, allowing it to consume a broader range of prey, potentially increasing its fitness. Available metadata showed that P. salvini is also intermediate in breeding phenology and, with no overlap in breeding times, it is effectively reproductively isolated from either parental species through allochrony. These results provide evidence for a case of HHS in nature, and show for the first time that additivity of divergent parental traits alone can lead directly to increased hybrid fitness and reproductive isolation. Article in Journal/Newspaper Antarc* Antarctic Antarctic prion Pachyptila desolata Publication Server of the Justus-Liebig-University of Giessen Antarctic |
institution |
Open Polar |
collection |
Publication Server of the Justus-Liebig-University of Giessen |
op_collection_id |
ftubgiessen |
language |
English |
topic |
Procellariiformes additive traits homoploid hybrid speciation increased hybrid fitness reproductive isolation seabird ddc:570 |
spellingShingle |
Procellariiformes additive traits homoploid hybrid speciation increased hybrid fitness reproductive isolation seabird ddc:570 Masello, Juan F Quillfeldt, Petra Sandoval-Castellanos, Edson Alderman, Rachael Calderón, Luciano Cherel, Yves Cole, Theresa L Cuthbert, Richard J Marin, Manuel Massaro, Melanie Navarro, Joan Phillips, Richard A Ryan, Peter G Shepherd, Lara D Suazo, Cristián G Weimerskirch, Henri Moodley, Yoshan Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation |
topic_facet |
Procellariiformes additive traits homoploid hybrid speciation increased hybrid fitness reproductive isolation seabird ddc:570 |
description |
Speciation through homoploid hybridization (HHS) is considered extremely rare in animals. This is mainly because the establishment of reproductive isolation as a product of hybridization is uncommon. Additionally, many traits are underpinned by polygeny and/or incomplete dominance, where the hybrid phenotype is an additive blend of parental characteristics. Phenotypically intermediate hybrids are usually at a fitness disadvantage compared with parental species and tend to vanish through backcrossing with parental population(s). It is therefore unknown whether the additive nature of hybrid traits in itself could lead successfully to HHS. Using a multi-marker genetic data set and a meta-analysis of diet and morphology, we investigated a potential case of HHS in the prions (Pachyptila spp.), seabirds distinguished by their bills, prey choice, and timing of breeding. Using approximate Bayesian computation, we show that the medium-billed Salvin's prion (Pachyptila salvini) could be a hybrid between the narrow-billed Antarctic prion (Pachyptila desolata) and broad-billed prion (Pachyptila vittata). Remarkably, P. salvini's intermediate bill width has given it a feeding advantage with respect to the other Pachyptila species, allowing it to consume a broader range of prey, potentially increasing its fitness. Available metadata showed that P. salvini is also intermediate in breeding phenology and, with no overlap in breeding times, it is effectively reproductively isolated from either parental species through allochrony. These results provide evidence for a case of HHS in nature, and show for the first time that additivity of divergent parental traits alone can lead directly to increased hybrid fitness and reproductive isolation. |
format |
Article in Journal/Newspaper |
author |
Masello, Juan F Quillfeldt, Petra Sandoval-Castellanos, Edson Alderman, Rachael Calderón, Luciano Cherel, Yves Cole, Theresa L Cuthbert, Richard J Marin, Manuel Massaro, Melanie Navarro, Joan Phillips, Richard A Ryan, Peter G Shepherd, Lara D Suazo, Cristián G Weimerskirch, Henri Moodley, Yoshan |
author_facet |
Masello, Juan F Quillfeldt, Petra Sandoval-Castellanos, Edson Alderman, Rachael Calderón, Luciano Cherel, Yves Cole, Theresa L Cuthbert, Richard J Marin, Manuel Massaro, Melanie Navarro, Joan Phillips, Richard A Ryan, Peter G Shepherd, Lara D Suazo, Cristián G Weimerskirch, Henri Moodley, Yoshan |
author_sort |
Masello, Juan F |
title |
Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation |
title_short |
Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation |
title_full |
Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation |
title_fullStr |
Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation |
title_full_unstemmed |
Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation |
title_sort |
additive traits lead to feeding advantage and reproductive isolation, promoting homoploid hybrid speciation |
publishDate |
2021 |
url |
https://doi.org/10.1093/molbev/msz090 https://jlupub.ub.uni-giessen.de//handle/jlupub/153 https://doi.org/10.22029/jlupub-98 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic prion Pachyptila desolata |
genre_facet |
Antarc* Antarctic Antarctic prion Pachyptila desolata |
op_relation |
https://doi.org/10.1093/molbev/msz090 https://jlupub.ub.uni-giessen.de//handle/jlupub/153 http://dx.doi.org/10.22029/jlupub-98 |
op_rights |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1093/molbev/msz09010.22029/jlupub-98 |
_version_ |
1798836869134286848 |