A New Shrimp Genus (Crustacea: Decapoda) from the Deep Atlantic and an Unusual Cleaning Mechanism of Pelagic Decapods
| Autor: | Alexander L. Vereshchaka, Anastasiia A Lunina, Dmitry N. Kulagin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
new taxon QH301-705.5 Zoology Oplophoridae phylogeny 010603 evolutionary biology 01 natural sciences Hymenodora 03 medical and health sciences Caridea Genus biology.animal morphology 14. Life underwater Biology (General) Clade 030304 developmental biology Nature and Landscape Conservation Appendage 0303 health sciences Ecology biology Ecological Modeling biology.organism_classification Agricultural and Biological Sciences (miscellaneous) Taxon Sister group Oplophoroidea |
| Zdroj: | Diversity, Vol 13, Iss 536, p 536 (2021) Diversity Volume 13 Issue 11 Diversity-basel (1424-2818) (MDPI AG), 2021-11, Vol. 13, N. 11, P. 536 (14p.) |
| ISSN: | 1424-2818 |
| Popis: | The deep sea is the largest biome on Earth and hosts the majority of as yet undescribed species description of these may trigger a new mindset about evolution and function of characters. We describe and diagnose a new genus and species Sclerodora crosnieri sp. nov. belonging to the superfamily Oplophoroidea. We examined and coded 81 characters for morphological analyses and used four gene markers for molecular analyses involving the new taxon and representatives of all other genera of Oplophoroidea. Retrieved morphological and molecular trees were similar and suggested that the new genus is a sister group to Hymenodora and both form a clade sister to the rest of Acanthephyridae. We provide an amended key to all genera of Oplophoroidea. We found an unusual chelate structure on the dactyl of the fifth pereopod, tested and confirmed a hypothesis that this structure is common for the whole family Acanthephyridae. We suggest that this derived structure is linked to an active cleaning of branchia—a function associated with chelipeds in some other carid shrimps. Convergent chelate structures are likely efficient for cleaning branchia, whichever appendage is adapted for these functions. In Oplophoridae (sister to Acanthephyridae), cleaning function is carried out by well-developed epipods. |
| Databáze: | OpenAIRE |
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