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Like a rolling stone: Colonization and migration dynamics of the gray reef shark (Carcharhinus amblyrhynchos).

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Title: Like a rolling stone: Colonization and migration dynamics of the gray reef shark (Carcharhinus amblyrhynchos).
Authors: Lesturgie, Pierre1 (AUTHOR), Braun, Camrin D.2 (AUTHOR), Clua, Eric3,4 (AUTHOR), Mourier, Johann3,5 (AUTHOR), Thorrold, Simon R.2 (AUTHOR), Vignaud, Thomas3 (AUTHOR), Planes, Serge3,4 (AUTHOR), Mona, Stefano1,4 (AUTHOR) stefano.mona@mnhn.fr
Source: Ecology & Evolution (20457758). Jan2023, Vol. 13 Issue 1, p1-15. 15p.
Subject Terms: *Colonization (Ecology), *Reefs, *Coral reefs & islands, Long distance swimming, Sharks, Life history theory
Abstract: Designing appropriate management plans requires knowledge of both the dispersal ability and what has shaped the current distribution of the species under consideration. Here, we investigated the evolutionary history of the endangered gray reef shark (Carcharhinus amblyrhynchos) across its range by sequencing thousands of RADseq loci in 173 individuals in the Indo‐Pacific (IP). We first bring evidence of the occurrence of a range expansion (RE) originating close to the Indo‐Australian Archipelago (IAA) where two stepping‐stone waves (east and westward) colonized almost the entire IP. Coalescent modeling additionally highlighted a homogenous connectivity (Nm ~ 10 per generation) throughout the range, and isolation by distance model suggested the absence of barriers to dispersal despite the affinity of C. amblyrhynchos to coral reefs. This coincides with long‐distance swims previously recorded, suggesting that the strong genetic structure at the IP scale (FST ~ 0.56 between its ends) is the consequence of its broad current distribution and organization in a large number of demes. Our results strongly suggest that management plans for the gray reef shark should be designed on a range‐wide rather than a local scale due to its continuous genetic structure. We further contrasted these results with those obtained previously for the sympatric but strictly lagoon‐associated Carcharhinus melanopterus, known for its restricted dispersal ability. Carcharhinus melanopterus exhibits a similar RE dynamic but is characterized by a stronger genetic structure and a nonhomogeneous connectivity largely dependent on local coral reefs availability. This sheds new light on shark evolution, emphasizing the roles of IAA as source of biodiversity and of life‐history traits in shaping the extent of genetic structure and diversity. [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: Like a rolling stone: Colonization and migration dynamics of the gray reef shark (Carcharhinus amblyrhynchos).
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  Data: <searchLink fieldCode="AR" term="%22Lesturgie%2C+Pierre%22">Lesturgie, Pierre</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Braun%2C+Camrin+D%2E%22">Braun, Camrin D.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Clua%2C+Eric%22">Clua, Eric</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mourier%2C+Johann%22">Mourier, Johann</searchLink><relatesTo>3,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Thorrold%2C+Simon+R%2E%22">Thorrold, Simon R.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vignaud%2C+Thomas%22">Vignaud, Thomas</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Planes%2C+Serge%22">Planes, Serge</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mona%2C+Stefano%22">Mona, Stefano</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> stefano.mona@mnhn.fr</i>
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  Data: <searchLink fieldCode="JN" term="%22Ecology+%26+Evolution+%2820457758%29%22">Ecology & Evolution (20457758)</searchLink>. Jan2023, Vol. 13 Issue 1, p1-15. 15p.
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  Data: *<searchLink fieldCode="DE" term="%22Colonization+%28Ecology%29%22">Colonization (Ecology)</searchLink><br />*<searchLink fieldCode="DE" term="%22Reefs%22">Reefs</searchLink><br />*<searchLink fieldCode="DE" term="%22Coral+reefs+%26+islands%22">Coral reefs & islands</searchLink><br /><searchLink fieldCode="DE" term="%22Long+distance+swimming%22">Long distance swimming</searchLink><br /><searchLink fieldCode="DE" term="%22Sharks%22">Sharks</searchLink><br /><searchLink fieldCode="DE" term="%22Life+history+theory%22">Life history theory</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Designing appropriate management plans requires knowledge of both the dispersal ability and what has shaped the current distribution of the species under consideration. Here, we investigated the evolutionary history of the endangered gray reef shark (Carcharhinus amblyrhynchos) across its range by sequencing thousands of RADseq loci in 173 individuals in the Indo‐Pacific (IP). We first bring evidence of the occurrence of a range expansion (RE) originating close to the Indo‐Australian Archipelago (IAA) where two stepping‐stone waves (east and westward) colonized almost the entire IP. Coalescent modeling additionally highlighted a homogenous connectivity (Nm ~ 10 per generation) throughout the range, and isolation by distance model suggested the absence of barriers to dispersal despite the affinity of C. amblyrhynchos to coral reefs. This coincides with long‐distance swims previously recorded, suggesting that the strong genetic structure at the IP scale (FST ~ 0.56 between its ends) is the consequence of its broad current distribution and organization in a large number of demes. Our results strongly suggest that management plans for the gray reef shark should be designed on a range‐wide rather than a local scale due to its continuous genetic structure. We further contrasted these results with those obtained previously for the sympatric but strictly lagoon‐associated Carcharhinus melanopterus, known for its restricted dispersal ability. Carcharhinus melanopterus exhibits a similar RE dynamic but is characterized by a stronger genetic structure and a nonhomogeneous connectivity largely dependent on local coral reefs availability. This sheds new light on shark evolution, emphasizing the roles of IAA as source of biodiversity and of life‐history traits in shaping the extent of genetic structure and diversity. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  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/ece3.9746
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        Text: English
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      – SubjectFull: Colonization (Ecology)
        Type: general
      – SubjectFull: Reefs
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      – SubjectFull: Coral reefs & islands
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      – SubjectFull: Long distance swimming
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      – SubjectFull: Sharks
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      – SubjectFull: Life history theory
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      – TitleFull: Like a rolling stone: Colonization and migration dynamics of the gray reef shark (Carcharhinus amblyrhynchos).
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              Text: Jan2023
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