Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae)
ABSTRACT Mutualistic relationships such as the one between Trapezia crabs and coral colonies are common in reef organisms and play a crucial role in coral resilience and resistance to climate‐induced stressor, yet very little is known about the taxonomic diversity and evolutionary history of the spe...
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| Format: | Article |
| Language: | English |
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Wiley
2025-02-01
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| Series: | Ecology and Evolution |
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| Online Access: | https://doi.org/10.1002/ece3.70960 |
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| author | Kenzie Pollard Carlos Leiva Heloise Rouzé Sarah Lemer |
| author_facet | Kenzie Pollard Carlos Leiva Heloise Rouzé Sarah Lemer |
| author_sort | Kenzie Pollard |
| collection | DOAJ |
| description | ABSTRACT Mutualistic relationships such as the one between Trapezia crabs and coral colonies are common in reef organisms and play a crucial role in coral resilience and resistance to climate‐induced stressor, yet very little is known about the taxonomic diversity and evolutionary history of the species involved. Despite being essential actors of coral reefs and threatened by the ongoing degradation of their habitat, little genetic information is available for Trapezia crabs, including the exact number of species and their relationships. To overcome this limitation, we sampled Natural History Collections, an important and underutilized source of genomic data. We used a novel approach optimized for degraded DNA to generate high‐quality genomic data from a combination of 166 museum tissues and freshly collected samples and recovered a strongly supported phylogeny of the Trapezia genus, clarifying species relationships of a majority of taxa and suggesting the potential division of Trapezia into two genera. We then focused on the most widespread species T. bidentata and identified four distinct genetic clusters, suggesting high divergence and cryptic speciation in the Indian Ocean and the Marquesas Islands. Populations of the Central and West Pacific showed signs of admixture across a heterogeneous seascape, attributing to a potentially long pelagic dispersal phase and expansive gene pool. Our results highlight the need to further explore the genetic diversity within other Trapezia species and other coral‐associated organisms, as they are likely to exhibit more complex genetic patterns than previously understood. |
| format | Article |
| id | doaj-art-6007cb7a59d948dabaed0ea01dfa742b |
| institution | DOAJ |
| issn | 2045-7758 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecology and Evolution |
| spelling | doaj-art-6007cb7a59d948dabaed0ea01dfa742b2025-08-20T02:46:58ZengWileyEcology and Evolution2045-77582025-02-01152n/an/a10.1002/ece3.70960Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae)Kenzie Pollard0Carlos Leiva1Heloise Rouzé2Sarah Lemer3Marine Laboratory University of Guam Mangilao Guam USAMarine Laboratory University of Guam Mangilao Guam USAMarine Laboratory University of Guam Mangilao Guam USAMarine Laboratory University of Guam Mangilao Guam USAABSTRACT Mutualistic relationships such as the one between Trapezia crabs and coral colonies are common in reef organisms and play a crucial role in coral resilience and resistance to climate‐induced stressor, yet very little is known about the taxonomic diversity and evolutionary history of the species involved. Despite being essential actors of coral reefs and threatened by the ongoing degradation of their habitat, little genetic information is available for Trapezia crabs, including the exact number of species and their relationships. To overcome this limitation, we sampled Natural History Collections, an important and underutilized source of genomic data. We used a novel approach optimized for degraded DNA to generate high‐quality genomic data from a combination of 166 museum tissues and freshly collected samples and recovered a strongly supported phylogeny of the Trapezia genus, clarifying species relationships of a majority of taxa and suggesting the potential division of Trapezia into two genera. We then focused on the most widespread species T. bidentata and identified four distinct genetic clusters, suggesting high divergence and cryptic speciation in the Indian Ocean and the Marquesas Islands. Populations of the Central and West Pacific showed signs of admixture across a heterogeneous seascape, attributing to a potentially long pelagic dispersal phase and expansive gene pool. Our results highlight the need to further explore the genetic diversity within other Trapezia species and other coral‐associated organisms, as they are likely to exhibit more complex genetic patterns than previously understood.https://doi.org/10.1002/ece3.70960coral reefsCrustaceacryptic speciesexosymbiontgenomeGuam |
| spellingShingle | Kenzie Pollard Carlos Leiva Heloise Rouzé Sarah Lemer Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae) Ecology and Evolution coral reefs Crustacea cryptic species exosymbiont genome Guam |
| title | Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae) |
| title_full | Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae) |
| title_fullStr | Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae) |
| title_full_unstemmed | Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae) |
| title_short | Genomic Insights From Natural History Collections Reveal Cryptic Speciation in Coral Guard Crabs (Family: Trapeziidae) |
| title_sort | genomic insights from natural history collections reveal cryptic speciation in coral guard crabs family trapeziidae |
| topic | coral reefs Crustacea cryptic species exosymbiont genome Guam |
| url | https://doi.org/10.1002/ece3.70960 |
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