Ranina ranina, Spanner crab : fisheries
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Ranina ranina   (Linnaeus, 1758)

Spanner crab

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Ranina ranina  AquaMaps  Data sources: GBIF OBIS
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Ranina ranina

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Malacostraca | Decapoda | Raninidae

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

Reef-associated; depth range 1 - 200 m (Ref. 343).  Tropical; 35°N - 34°S, 29°E - 139°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-Pacific: From East Africa, Japan to Australia and Hawaii.

Length at first maturity / Size / Weight / Age

Maturity: Lm 7.2  range ? - 6.19 cm Max length : 17.5 cm CL male/unsexed; (Ref. 343); 12 cm CL (female); max. published weight: 900.00 g (Ref. 343); max. published weight: 900.00 g

Short description Morphology

Carapace very elongate, much longer than broad; anterior part much broader than narrow, posterior waist-like. Abdomen clearly visible from dorsal view. Chelae greatly outsized in males; chelae and legs laterally flattened, spade-like. Color: orange to red overall.

Biology     Glossary (e.g. epibenthic)

Minimum depth from Ref. 114541. Maximum length (umsexed) from Ref. 85185. Occupies the sublittoral zone (Ref. 77016). Occurs at depths greater than 100 m in open sandy areas (Ref. 343) in which they bury (Ref. 106934). Feeds on a variety of worms and soft shelled mollusks (Ref. 343).

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

Members of the order Decapoda are mostly gonochoric. Mating behavior: Precopulatory courtship ritual is common (through olfactory and tactile cues); usually indirect sperm transfer.

Main reference References | Coordinator | Collaborators

Ng, P.K.L. 1998 Crabs. p. 1045-1155. In K.E. Carpenter and V.H. Niem (eds) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 2. Cephalopods, crustaceans, holothurians and sharks. Rome, FAO. 1998. pp. 687-1396. (Ref. 343)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

Fisheries: commercial
| FishSource | Sea Around Us

Tools

E-book | Field guide

More information

Trophic Ecology
Food items (preys)
Diet composition
Food consumption
Predators
Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
Collaborators
Taxonomy
Common names
Synonyms
Morphology
Pictures
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

Preferred temperature (Ref. 115969): 18.2 - 28.8, mean 27.4 (based on 1084 cells).
Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.12-0.24).
Prior r = 0.93, 95% CL = 0.61 - 1.40, Based on 2 data-limited stock assessments.
Fishing Vulnerability (Ref. 71543): Low vulnerability (24 of 100).
Price category (Ref. 80766): Unknown.
Nutrients :  Calcium = 109 [35, 184] mg/100g; Iron = 1.59 [1.21, 1.97] mg/100g; Protein = 20.2 [19.2, 21.3] %; Omega3 = 0.285 [0.185, 0.386] g/100g; Selenium = 48.3 [-31.7, 128.3] μg/100g; VitaminA = 0 μg/100g; Zinc = 1.79 [1.17, 2.40] mg/100g (wet weight); based on nutrient studies.

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