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Gut Microbiome Communities Vary Across Translocated Populations of the Seychelles Warbler.

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Title: Gut Microbiome Communities Vary Across Translocated Populations of the Seychelles Warbler.
Authors: Worsley, Sarah F.1 (AUTHOR) s.worsley@uea.ac.uk, Crighton, Zoe1 (AUTHOR), Lee, Chuen Zhang1 (AUTHOR), Burke, Terry2 (AUTHOR), Komdeur, Jan3 (AUTHOR), Dugdale, Hannah L.3,4 (AUTHOR), Richardson, David S.1,5 (AUTHOR) david.richardson@uea.ac.uk
Source: Ecology & Evolution (20457758). Jun2026, Vol. 16 Issue 6, p1-15. 15p.
Subject Terms: *Wildlife reintroduction, *Biological extinction, Gut microbiota, Population genetics, Ecological resilience, Microbial diversity
Geographic Terms: Seychelles
Abstract: Conservation translocations are an increasingly common tool used to help combat species extinction and global biodiversity loss. However, their success is dependent on a wide range of abiotic and biotic factors. To date, the potential role of host‐associated microbiomes in translocation success has been overlooked despite their fundamental contribution to host health and fitness. Here, we use faecal samples to evaluate how gut microbiome communities vary across the last remnant (source) population, and all four translocated populations (established between 1988 and 2011), of the Seychelles warbler (Acrocephalus sechellensis). Gut microbiome alpha diversity was lower in all translocated populations compared to the source population on Cousin Island. Gut microbiome composition also varied, with several short‐chain fatty acid producing bacterial families being lost from the core microbiome in some translocated populations; such taxa have been shown to play an important role in maintaining host metabolic health. Furthermore, the two translocated populations that were established the longest time ago, and with the fewest individuals, had reduced inter‐individual gut microbiome variability compared to the source population. While it was not possible to directly assess the specific drivers of these differences due to samples being collected after the translocation event, it is likely that the size of the founding population, subsequent loss of host genetic variation and environmental factors all contribute to shaping gut microbiome variation amongst these populations. Future work should assess whether taxonomic variation translates into differences in gut microbiome function and the possible consequences for host population health and long‐term resilience to environmental change. [ABSTRACT FROM AUTHOR]
Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Gut Microbiome Communities Vary Across Translocated Populations of the Seychelles Warbler.
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  Data: <searchLink fieldCode="AR" term="%22Worsley%2C+Sarah+F%2E%22">Worsley, Sarah F.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> s.worsley@uea.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Crighton%2C+Zoe%22">Crighton, Zoe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Chuen+Zhang%22">Lee, Chuen Zhang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burke%2C+Terry%22">Burke, Terry</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Komdeur%2C+Jan%22">Komdeur, Jan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dugdale%2C+Hannah+L%2E%22">Dugdale, Hannah L.</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Richardson%2C+David+S%2E%22">Richardson, David S.</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> david.richardson@uea.ac.uk</i>
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  Data: <searchLink fieldCode="JN" term="%22Ecology+%26+Evolution+%2820457758%29%22">Ecology & Evolution (20457758)</searchLink>. Jun2026, Vol. 16 Issue 6, p1-15. 15p.
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  Data: *<searchLink fieldCode="DE" term="%22Wildlife+reintroduction%22">Wildlife reintroduction</searchLink><br />*<searchLink fieldCode="DE" term="%22Biological+extinction%22">Biological extinction</searchLink><br /><searchLink fieldCode="DE" term="%22Gut+microbiota%22">Gut microbiota</searchLink><br /><searchLink fieldCode="DE" term="%22Population+genetics%22">Population genetics</searchLink><br /><searchLink fieldCode="DE" term="%22Ecological+resilience%22">Ecological resilience</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+diversity%22">Microbial diversity</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Seychelles%22">Seychelles</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Conservation translocations are an increasingly common tool used to help combat species extinction and global biodiversity loss. However, their success is dependent on a wide range of abiotic and biotic factors. To date, the potential role of host‐associated microbiomes in translocation success has been overlooked despite their fundamental contribution to host health and fitness. Here, we use faecal samples to evaluate how gut microbiome communities vary across the last remnant (source) population, and all four translocated populations (established between 1988 and 2011), of the Seychelles warbler (Acrocephalus sechellensis). Gut microbiome alpha diversity was lower in all translocated populations compared to the source population on Cousin Island. Gut microbiome composition also varied, with several short‐chain fatty acid producing bacterial families being lost from the core microbiome in some translocated populations; such taxa have been shown to play an important role in maintaining host metabolic health. Furthermore, the two translocated populations that were established the longest time ago, and with the fewest individuals, had reduced inter‐individual gut microbiome variability compared to the source population. While it was not possible to directly assess the specific drivers of these differences due to samples being collected after the translocation event, it is likely that the size of the founding population, subsequent loss of host genetic variation and environmental factors all contribute to shaping gut microbiome variation amongst these populations. Future work should assess whether taxonomic variation translates into differences in gut microbiome function and the possible consequences for host population health and long‐term resilience to environmental change. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/ece3.73750
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        Text: English
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        Type: general
      – SubjectFull: Biological extinction
        Type: general
      – SubjectFull: Gut microbiota
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      – SubjectFull: Population genetics
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      – SubjectFull: Ecological resilience
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      – SubjectFull: Microbial diversity
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      – SubjectFull: Seychelles
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      – TitleFull: Gut Microbiome Communities Vary Across Translocated Populations of the Seychelles Warbler.
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              Text: Jun2026
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              Y: 2026
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