Chaceon affinis   (Milne-Edwards & Bouvier, 1894)

Native range | All suitable habitat | Year 2100
This map was computer-generated and has not yet been reviewed.
Chaceon affinis   AquaMaps   Data sources: GBIF OBIS

Malacostraca | Decapoda | Geryonidae
Common names | Synonyms | CoL | ITIS | WoRMS

Main reference
Abellán, L.J.L., E. Balguerías and V. Fernández-Vergaz. 2002. (Ref. 2677)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age
Max length : 15.5 cm CL male/unsexed; (Ref. 101417); max. published weight: 863 g (Ref. 2720)

Benthic; depth range 130 - 2047 m (Ref. 2704)

Climate / Range
Tropical; 15°N - 64°N (Ref. 2747)

Southeast Pacific and the Atlantic.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Biology     Glossary (e.g. epibenthic)

This is the largest epibenthic brachyuran crab of the Family Geryonidae (Ref. 2689). Bimodal length frequency for males and unimodal for females. More males and larger individuals in shallower substratum and increasing number of females and smaller individuals in deeper substratum (Ref. 2677, 2747). This is also a target species of gillnet operators in Northeast Atlantic fisheries (Ref. 2740). Inhabits a variety of bottom substrates from mud to rock (Ref. 2708, 2725 and 2747); at a depth of 700 m and deeper; it prefers soft substrata (Ref. 2753), and it is found on seamount and escarpments (Ref. 2740). Recruitment of individuals occurs in the deepest substrata. Sacculina sp. is parasitic on this species, infecting individuals in deeper substratum around 1000 to 1100 m (Ref. 2677). Males parasitized by Sacculina are feminized behaviorally and morphologically (Ref. 2694), whereas females are castrated (Ref. 2696). Epibionts Poecilasma crassa and Poecilasma aurantia are found on the exoskeleton of the crab (Ref. 2747 and 2752). This is an allopatric species (Ref. 2763). Inferred from the gonadosomatic index (GDI), presence of ovigerous females and evolution of the maturity stages, occurs in autumn and winter. This supports an annual reproductive cycle. Sexual maturity with carapace lengths from 7.3 to 9.7 cm (Ref. 2747, 2751).

IUCN Red List Status (Ref. 96402)

CITES status (Ref. 94142)

Not Evaluated

Threat to humans

Human uses
Fisheries: of potential interest
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More information

FAO areas
Food items
Mass conversion

Internet sources
BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | ispecies | National databases | PubMed | Scirus | Sea Around Us | FishBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimation of some characteristics with mathematical models

Price category (Ref. 80766)