Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback.
Spatial variation in parasitic infections is common, and has the potential to drive population divergence and reproductive isolation of hosts. However, despite support from theory and model laboratory systems, not much strong evidence has been forthcoming from the wild. Here we show that parasites a...
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| Format: | Article |
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The Royal Society
2016
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| Online Access: | https://eprints.nottingham.ac.uk/35567/ |
| _version_ | 1848795109780357120 |
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| author | El Nagar, Aliya MacColl, Andrew D.C. |
| author_facet | El Nagar, Aliya MacColl, Andrew D.C. |
| author_sort | El Nagar, Aliya |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Spatial variation in parasitic infections is common, and has the potential to drive population divergence and reproductive isolation of hosts. However, despite support from theory and model laboratory systems, not much strong evidence has been forthcoming from the wild. Here we show that parasites are likely to cause reproductive isolation in the adaptive radiation of three-spined stickleback. Adjacent wild populations on the Scottish island of North Uist differ greatly and consistently in the occurrence of different parasites that have substantial effects on fitness. Lab-reared fish are more resistant to experimental infection by parasite species from their own population. Furthermore, hybrid backcrosses between the host populations are more resistant to the parasites from the parental population to which they are more closely related. These patterns provide strong evidence that parasites can cause ecological speciation, by contributing to selection against migrants and ecologically dependent postmating isolation. |
| first_indexed | 2025-11-14T19:26:52Z |
| format | Article |
| id | nottingham-35567 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:26:52Z |
| publishDate | 2016 |
| publisher | The Royal Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-355672020-05-04T18:06:42Z https://eprints.nottingham.ac.uk/35567/ Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. El Nagar, Aliya MacColl, Andrew D.C. Spatial variation in parasitic infections is common, and has the potential to drive population divergence and reproductive isolation of hosts. However, despite support from theory and model laboratory systems, not much strong evidence has been forthcoming from the wild. Here we show that parasites are likely to cause reproductive isolation in the adaptive radiation of three-spined stickleback. Adjacent wild populations on the Scottish island of North Uist differ greatly and consistently in the occurrence of different parasites that have substantial effects on fitness. Lab-reared fish are more resistant to experimental infection by parasite species from their own population. Furthermore, hybrid backcrosses between the host populations are more resistant to the parasites from the parental population to which they are more closely related. These patterns provide strong evidence that parasites can cause ecological speciation, by contributing to selection against migrants and ecologically dependent postmating isolation. The Royal Society 2016-08-17 Article PeerReviewed El Nagar, Aliya and MacColl, Andrew D.C. (2016) Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. Proceedings of the Royal Society B, 283 (1836). p. 20160691. ISSN 1471-2954 Speciation; Divergent evolution; Local adaptation; Gasterosteus aculeatus; Parasites http://rspb.royalsocietypublishing.org/content/283/1836/20160691 doi:10.1098/rspb.2016.0691 doi:10.1098/rspb.2016.0691 |
| spellingShingle | Speciation; Divergent evolution; Local adaptation; Gasterosteus aculeatus; Parasites El Nagar, Aliya MacColl, Andrew D.C. Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. |
| title | Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. |
| title_full | Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. |
| title_fullStr | Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. |
| title_full_unstemmed | Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. |
| title_short | Parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. |
| title_sort | parasites contribute to ecologically dependent postmating isolation in the adaptive radiation of three-spined stickleback. |
| topic | Speciation; Divergent evolution; Local adaptation; Gasterosteus aculeatus; Parasites |
| url | https://eprints.nottingham.ac.uk/35567/ https://eprints.nottingham.ac.uk/35567/ https://eprints.nottingham.ac.uk/35567/ |