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Distinct development trajectories and symbiosis modes in vent shrimps

Distinct development trajectories and symbiosis modes in vent shrimps
Distinct development trajectories and symbiosis modes in vent shrimps

Most animal species have a singular developmental pathway and adult ecology, but developmental plasticity is well-known in some such as honeybees where castes display profoundly different morphology and ecology. An intriguing case is the Atlantic deep-sea hydrothermal vent shrimp pair Rimicaris hybisae and R. chacei that share dominant COI haplotypes and could represent very recently diverging lineages or even morphs of the same species. Rimicaris hybisae is symbiont-reliant with a hypertrophied head chamber (in the Mid-Cayman Spreading Centre), while R. chacei is mixotrophic with a narrow head chamber (on the Mid-Atlantic Ridge). Here, we use X-ray micro-computed tomography and fluorescence in situ hybridization to show that key anatomical shifts in both occur during the juvenile–subadult transition, when R. hybisae has fully established symbiosis but not R. chacei. On the Mid-Atlantic Ridge, the diet of R. chacei has been hypothetically linked to competition with the obligatorily symbiotic congener R. exoculata, and we find anatomical evidence that R. exoculata is indeed better adapted for symbiosis. We speculate the possibility that the distinct development trajectories in R. hybisae and R. chacei may be determined by symbiont colonization at a “critical period” before subadulthood, though further genetic studies are warranted to test this hypothesis along with the true relationship between R. hybisae and R. chacei.

development, phenotypic plasticity, symbiosis
0014-3820
413-422
Methou, Pierre
41670cbb-ab03-4c09-bca3-1a8a4e13e9c8
Gueganton, Marion
70ffaffb-4af1-42fe-9493-691a753049f0
Copley, Jonathan T.
5f30e2a6-76c1-4150-9a42-dcfb8f5788ef
Kayana Watanabe, Hiromi
f780a7dd-1d1f-45a4-9e0e-b7baceb6e459
Pradillon, Florence
f0623aca-40be-488b-bfd4-e21777d19816
Cambon-Bonavita, Marie-Anne
13ead15d-864c-4c43-aa18-b96399ce942a
Chen, Chong
b1230ad7-5b60-4105-a03b-1a89eeb6ce61
Methou, Pierre
41670cbb-ab03-4c09-bca3-1a8a4e13e9c8
Gueganton, Marion
70ffaffb-4af1-42fe-9493-691a753049f0
Copley, Jonathan T.
5f30e2a6-76c1-4150-9a42-dcfb8f5788ef
Kayana Watanabe, Hiromi
f780a7dd-1d1f-45a4-9e0e-b7baceb6e459
Pradillon, Florence
f0623aca-40be-488b-bfd4-e21777d19816
Cambon-Bonavita, Marie-Anne
13ead15d-864c-4c43-aa18-b96399ce942a
Chen, Chong
b1230ad7-5b60-4105-a03b-1a89eeb6ce61

Methou, Pierre, Gueganton, Marion, Copley, Jonathan T., Kayana Watanabe, Hiromi, Pradillon, Florence, Cambon-Bonavita, Marie-Anne and Chen, Chong (2024) Distinct development trajectories and symbiosis modes in vent shrimps. Evolution, 78 (3), 413-422. (doi:10.1093/evolut/qpad217).

Record type: Article

Abstract

Most animal species have a singular developmental pathway and adult ecology, but developmental plasticity is well-known in some such as honeybees where castes display profoundly different morphology and ecology. An intriguing case is the Atlantic deep-sea hydrothermal vent shrimp pair Rimicaris hybisae and R. chacei that share dominant COI haplotypes and could represent very recently diverging lineages or even morphs of the same species. Rimicaris hybisae is symbiont-reliant with a hypertrophied head chamber (in the Mid-Cayman Spreading Centre), while R. chacei is mixotrophic with a narrow head chamber (on the Mid-Atlantic Ridge). Here, we use X-ray micro-computed tomography and fluorescence in situ hybridization to show that key anatomical shifts in both occur during the juvenile–subadult transition, when R. hybisae has fully established symbiosis but not R. chacei. On the Mid-Atlantic Ridge, the diet of R. chacei has been hypothetically linked to competition with the obligatorily symbiotic congener R. exoculata, and we find anatomical evidence that R. exoculata is indeed better adapted for symbiosis. We speculate the possibility that the distinct development trajectories in R. hybisae and R. chacei may be determined by symbiont colonization at a “critical period” before subadulthood, though further genetic studies are warranted to test this hypothesis along with the true relationship between R. hybisae and R. chacei.

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qpad217 - Version of Record
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Accepted/In Press date: 4 December 2023
e-pub ahead of print date: 9 December 2023
Published date: 1 March 2024
Keywords: development, phenotypic plasticity, symbiosis

Identifiers

Local EPrints ID: 488877
URI: http://eprints.soton.ac.uk/id/eprint/488877
ISSN: 0014-3820
PURE UUID: 3d6a2357-94ae-4e20-b7af-e95c7c20d405
ORCID for Jonathan T. Copley: ORCID iD orcid.org/0000-0003-3333-4325

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Date deposited: 09 Apr 2024 09:59
Last modified: 06 Jun 2024 01:35

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Contributors

Author: Pierre Methou
Author: Marion Gueganton
Author: Hiromi Kayana Watanabe
Author: Florence Pradillon
Author: Marie-Anne Cambon-Bonavita
Author: Chong Chen

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