Malacostraca |
Decapoda |
Portunidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
Sống nổi và đáy; Nước ngọt; Thuộc về nước lợ; Mức độ sâu 0 - 40 m (Tài liệu tham khảo 101596). Tropical; 34°N - 28°S, 98°W - 34°W
Western Atlantic: USA to Brazil.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ?  range ? - ? cm Max length : 16.0 cm WD con đực/không giới tính; (Tài liệu tham khảo 367); 15 cm WD (female)
Carapace almost twice as broad as long; 9 teeth on moderately arched anterolateral margin, all except outer orbital teeth and strong lateral spine swept, forward front (excluding inner orbital angles) bearing 4 well-developed teeth (excluding outer orbital angles), outer pair obtuse. Marginal slopes of convex dorsal surface smooth and glistening (when wet), central part and transverse lines granulate. Pincers remarkably smooth except for usual spines, obsolescent granules on ridges; fingers of major hand heavily toothed; fifth legs flattened in form of paddles. Male with T-shaped abdomen reaching nearly to juncture between thoracic sternites 3 and 4; slender first pleopods sinuously curved, overlapping in 2 places proximally, diverging distally but often exceeding telson, crossed near tips and armed distally with dorsolateral band of large and small retrogressive spinules. Color: variable. Overall cast olive green with prominent reddish markings. Carapace olive, greyish green, greenish chestnut or forest green with variable purplish to red markings, especially on branchial, hepatic, cardiac, and gastric areas, individuals of large sizes are sometimes dark chestnut tinted blackish brown on gastric and metagastric areas, with an oblique spot on subbranchial region; anterolateral teeth olive green with brown to red tints and yellowish white tips. Chelipeds red to dark reddish brown above and whitish below with bluish tints, main colors being sharply separated on outer surface of palm; fingers red to reddish brown, a purplish cast on internal articulation of merus with carpus and this member with chela; tubercles, tips of fingers and spines, on articulations cream; remaining legs reddish, variable. Underparts of body mainly dirty white to purplish red with suffusion of blue marginally.
Benthopelagic (Ref. 97531). Inhabits shallow brackish waters ranging in salinity from nearly fresh to nearly full marine, on sand or rock-shell bottoms. Tolerant of stagnant polluted environments. Feeds on a variety of materials including mollusks, other bottom invertebrates, some fishes, carrion and detritus (Ref. 367).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | 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.
Tavares, M. 2003 True Crabs. pp. 327-352. In Carpenter, K.E. (ed.) The living marine resources of the Western Central Atlantic. Volume1: introdution, molluscs, crustaceans, hagfishes, sharks, batoid fishes, and chimaeras. FAO Species Identification Guide for Fishery Purposes and American Society of Ichthyologists and Herpetologists Special PublicationNo. 5. Rome, FAO. pp. 1-600. (Tài liệu tham khảo 367)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2025-1)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Human uses
Các nghề cá: Tính thương mại
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Các công cụ
Thêm thông tin
Population dynamicsSự sinh trưởngMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionSự phong phú Life cycleSự tái sinh sảnChín muồi sinh dụcSự sinh sảnĐẻ trứngEggsEgg developmentLarvae PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
Các nguồn internet
Estimates based on models
Preferred temperature
(Ref.
115969): 23.6 - 28, mean 26.7 (based on 270 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).