Common names from other countries
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Υφάλμυρο; εύρος βάθους 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
Indo-West Pacific. Introduced in Hawaii and USA.
Length at first maturity / Μέγεθος / Βάρος / Age
Maturity: Lm 6.9, range 8 - ? cm Max length : 28.0 cm CW αρσενικό/απροσδιόριστο; (Ref. 343); μεγ. δημοσιευμένο βάρος: 3.0 kg (Ref. 343)
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.
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).
Ng, P.K.L. 1998. (Ref. 343)
IUCN Red List Status (Ref. 130435: Version 2024-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Human uses
αλιεία: Εμπορικό(ά)
FAO - Υδατοκαλλιέργειες: Παραγωγή, species profile; αλιεία: landings, species profile | FishSource | Η θάλασσα γύρω μας
Εργαλεία
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 24.5 - 29.1, mean 28.1 (based on 1290 cells).
Ελαστικότητα
Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (K=0.43).
Prior r = 1.17, 95% CL = 0.77 - 1.75, Based on 3 data-limited stock assessments.
Vulnerability
Low vulnerability (21 of 100).
