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Scylla - Species in
Portunidae - - Classification -
- Portunidae
- Decapoda
- Malacostraca
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Scylla serrata (Forsskål, 1775)
Indo-Pacific swamp crab| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Scylla serrata AquaMaps Data sources: GBIF OBIS |
Classification / Names Populärnamn | synonymer | CoL | ITIS | WoRMS
Malacostraca | Decapoda | Portunidae
Environment: milieu / climate zone / djupintervall / distribution range Ekologi
; brackvatten; djupintervall 0 - 50 m (Ref. 343). Tropical; 26°C - 30°C (Ref. 111153), preferred 25°C (Ref. 107945); 34°N - 37°S, 22°E - 134°W
Distribution Länder | FAO områden | Ekosystem | Förekomster | Utplanteringar
Indo-West Pacific. Introduced in Hawaii and USA.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm 6.9, range 8 - ? cm Max length : 28.0 cm CW hane/ej könsbestämd; (Ref. 343); publicerad maxvikt: 3.0 kg (Ref. 343)
Short description Morfologi
Carapace smooth, with strong transverse ridges; H-shaped gastric groove deep; relatively broad frontal lobes, all more or less in line with each other; broad anterolateral teeth, projecting obliquely outwards. Well-developed present on outer surface of chelipedal carpus and anterior and posterior dorsal parts of the palm. Color: carapace green to almost black; legs may be marbled.
Maximum carapace width: between 25 and 28 cm. Maximum weight between 2 and 3 kg. Also collected by baited wire mesh pots. Sold in Taiwan, Hong Kong and Singapore, where the large crabs (so called "meat crabs") and females with ripe ovaries ("roe crabs") command a price from US$5 to US$10 per kg. Largest exporters of this species are Indonesia, Sri Lanka, India, and Bangladesh. There have been attempts to culture the crabs in captivity, but none of the closed-cycle enterprise have gone commercial. Tide is relied upon by farms to bring megalopae or late zoeae into grow-out ponds. Prefers oceanic waters, usually found just offshore on soft muddy bottoms (Also Ref. 9773). Can be caught up to 50 m offshore as it migrates offshore to spawn (Ref. 343). Subtidal (Ref. 106854). Digs deep burrows in mangroves and soft substrates in shallow or intertidal waters (Refs. 343, 9773). Found in brackish to sea water (Ref. 77016). Forages at night. Major predator (Also Ref. 128960) of small invertebrates colonizing mangrove swamps (Ref. 8752). Feeds on shrimps, crabs, fishes, and bivalves (Refs. 99886, 102679). Benthic scavenger but prefers oysters (Ref. 9773).
Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae
Gonochoric; sexually dimorphic based on secondary characteristics. The male traps the female under its chest, holding the latter with its chelipers, forming a pair. When the female is about to molt, the male releases but remains nearby. After moulting, the female is again trapped by the male and the latter opens its genitals towards the female's abdomen. Coupling may last from seven to twelve hours (Ref. 99880) and occurs at the bottom of the burrows; spawning occurs five weeks after mating. Migration: young crabs (2 cm CL) attend to estuarine waters and leave to enter the mangroves at lengths 7-9 cm for males and 8 cm for females; after which they return to the sea (Ref. 99886).
Main reference
referenser | Koordinator | Medarbetare
Ng, P.K.L. 1998. (Ref. 343)
IUCN Red List Status
(Ref. 130435: Version 2024-2)
CITES status (Ref. 108899)
Not Evaluated
CMS (Ref. 116361)
Not Evaluated
Threat to humans
Human uses
Fiskeri: kommersiell
FAO - Vattenbruk: production, species profile; fiskeri: landings, species profile | FishSource | Sea Around Us
Verktyg
Ytterligare information
Trophic Ecology
Ekologi
Population dynamics
Tillväxt
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Rekrytering
Abundans
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Rekrytering
Abundans
Life cycle
Human Related
Aquaculture profiles
Stamps, coins, misc.
Stamps, coins, misc.
Outreach
referenser
Internet-källor
BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Vattenbruk: species profile; fiskeri: species profile; publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, sök) | Zoological Record
Estimates based on models
Preferred temperature
(Ref. 115969): 24.5 - 29.1, mean 28.1 (based on 1290 cells).
Resiliens
(Ref. 69278):
Hög, lägsta populationsfördubblingstid mindre än 15 månader (K=0.43).
Prior r = 1.17, 95% CL = 0.77 - 1.75, Based on 3 data-limited stock assessments.
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.