| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Integrative taxonomy revisits the ontogeny and trophic niches of Rimicaris vent shrimps
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| Autores: |
Methou, Pierre
Michel, Loic
Segonzac, Michel
Cambon-bonavita, Marie-anne
Pradillon, Florence
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| Data: |
2020-07
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| Ano: |
2020
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| Palavras-chave: |
Hydrothermal vents
Stable isotopes
Taxonomy
Crustaceans
Life history
Trophic shift
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| Resumo: |
Among hydrothermal vent species, Rimicaris exoculata is one of the most emblematic, hosting abundant and diverse ectosymbioses that provide most of its nutrition. Rimicaris exoculata co-occurs in dense aggregates with the much less abundant Rimicaris chacei in many Mid-Atlantic Ridge vent fields. This second shrimp also houses ectosymbiotic microorganisms but has a mixotrophic diet. Recent observations have suggested potential misidentifications between these species at their juvenile stages, which could have led to misinterpretations of their early-life ecology. Here, we confirm erroneous identification of the earliest stages and propose a new set of morphological characters unambiguously identifying juveniles of each species. On the basis of this reassessment, combined use of C, N and S stable isotope ratios reveals distinct ontogenic trophic niche shifts in both species, from photosynthesis-based nutrition before settlement, towards a chemosynthetic diet afterwards. Furthermore, isotopic compositions in the earliest juvenile stages suggest differences in larval histories. Each species thus exhibits specific early-life strategies that would, without our re-examination, have been interpreted as ontogenetic variations. Overall, our results provide a good illustration of the identification issues persisting in deep-sea ecosystems and the importance of integrative taxonomy in providing an accurate view of fundamental aspects of the biology and ecology of species inhabiting these environments.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00640/75227/75368.pdf
https://archimer.ifremer.fr/doc/00640/75227/75369.pdf
https://archimer.ifremer.fr/doc/00640/75227/75370.pdf
DOI:10.1098/rsos.200837
https://archimer.ifremer.fr/doc/00640/75227/
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| Editor: |
The Royal Society
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| Formato: |
application/pdf
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| Fonte: |
Royal Society Open Science (2054-5703) (The Royal Society), 2020-07 , Vol. 7 , N. 7 , P. 200837 (13p.)
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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