Chaceon ramosae   Manning, Tavares & Albuquerque, 1989

Royal crab

Native range | All suitable habitat | Point map | Year 2050
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Chaceon ramosae  AquaMaps  Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Malacostraca | Decapoda | Geryonidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic; depth range 601 - 1228 m (Ref. 105069).  Subtropical; 21°S - 35°S, 52°W - 39°W (Ref. 105421)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Southwest Atlantic: Brazil, from Rio de Janeiro to Rio Grande do Sul.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 15.8 cm CW male/unsexed; (Ref. 105069)

Short description Morphology

A large Chaceon, CL to 143 mm, CW to 158 mm in adults, with 5 anterolateral teeth on the carapace and dorsoventrally depressed dactyli on the walking legs. Carapace 1.1 to 1.2 times broader than long. Median pair of frontal teeth separated by U-shaped sinus. Distance between submedian frontal teeth less than distance between them and lateral frontal teeth. Second, third, and fourth anterolateral teeth obsolete in adults, second and fourth smallest of all; distance from first to third tooth less than that from third to fifth tooth. Carapace with distinct raised ridge mesial to fifth anterolateral tooth, carapace surface finely granular, especially posterolaterally, smooth only at hepatic regions. Suborbital tooth short and broad in adults, not extending to level of lateral frontal teeth. Cheliped merus with sharp tooth subdistally, lacking distal tooth or angled lobe; carpus roughened dorsally, usually with irregular, curved granular ridge extending from middle of proximal margin to inner spine, anterior margin of carpus with at most an angled lobe but no spine; propodus with at most distal angled projection dorsally. Meri of walking legs with at most indistinct distal, dorsal tooth. Dactyli of walking legs depressed, height at midlength less than width. Fifth leg: merus usually less than 5.0 times (range 4.6-4.9 in adults, 6.4 in juvenile male) times longer than high, length 0.65 to 0.66 cb in adult; carpus with line of sharp granules dorsally; propodus length 4.1 to 4.3 times height in adult, 5.1 times height in juvenile, longer than dactylus.

Biology     Glossary (e.g. epibenthic)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

Manning, R.B., M.S. Tavares and E.F. Albuquerque. 1989. (Ref. 105069)

IUCN Red List Status (Ref. 130435: Version 2024-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses

Fisheries: commercial
| FishSource |

Tools

E-book | Field guide

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Trophic Ecology
Food items
Diet
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Predators
Ecology
Ecology
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Population dynamics
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Age/Size
Length-weight
Length-length
Length-frequencies
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Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
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Larvae
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Distribution
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FAO areas
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Introductions
Human Related
Aquaculture profile
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Taxonomy
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Synonyms
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References
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Vulnerability (Ref. 71543): Low vulnerability (10 of 100).

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