Malacostraca |
Decapoda |
Portunidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
. Tropical
Western Central Atlantic: confined to the Lake Maracaibo estuarine system.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ? range ? - ? cm Max length : 16.0 cm WD جنس نر / بدون خواص جنسي; (مرجع 367); 12 cm WD (female)
Carapace almost twice as broad as long; 9 teeth on moderately arched anterolateral margin (including outer orbital tooth and strong lateral spine) tending to be acuminate especially in outer part of row, with tips directed outward; front (excluding inner orbital angles) bearing 4 well-developed teeth, lateral pair moderately acute. Marginal slopes of convex dorsal surface smooth and glistening (when wet), central part and transverse lines variably granulate. Pincers granulate on ridges, fingers of major hand heavily toothed; fifth legs flattened in form of paddles. Male with T-shaped abdomen reaching to anterior 1/4 of thoracic sternite 4; slender first pleopods sinuously curved overlapping in 2 places proximally, diverging distally then recurving to termination near midline and tip of telson, armed distally with dorsolateral band of large and small retrogressive spinules. Color: carapace olive green with variable tints of brown and blue distally, articulations and spines of legs orange and blue; underparts cream and light yellow with suffusion of light blue.
Inhabits brackish to occasionally fresh waters containing much silt and decomposing organic material, usually below 16‰ salinity, on sandy and muddy bottoms and among roots of mangroves (Ref. 367).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | 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.
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
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. (مرجع 367)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
وضعيت از نظر سايتس (مرجع 108899)
Not Evaluated
Not Evaluated
خطر برای انسان ها
استفاده انسانی
ماهي گيري – شيلات: ارزش تحاري اندك
| FishSource |
ابزارها
اطلاعات بيشتر
Trophic EcologyFood items (preys)
تركيب غذايي
مصرف غذايي
شکارچیان
Population dynamicsرشد
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
فراواني
Life cycleتولید مثلبلوغFecundityتخم ریزیEggsنمو تخمLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
منابع اينترنتي
Estimates based on models
Fishing Vulnerability
Low vulnerability (10 of 100).
