Common names from other countries
Classification / Names / Names
俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS
Environment: milieu / climate zone / depth range / distribution range
生態學
; 深度上下限 0 - 2 m (Ref. 367). ; 30°N - 29°S, 98°W - 34°W
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | 簡介
Western Atlantic: From USA, the Gulf of Mexico, the Antilles, throughout the Caribbean and Brazil.
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 5.3 range ? - ? cm Max length : 15.0 cm CW 雄魚/尚未辨別雌雄; (Ref. 82656)
Carapace broadly egg-shaped, narrow posteriorly and greatly inflated anterolaterally in adults; lateral margins not sharply defines; fronto-orbital distance (space between outer orbital angles) about 2/3 of maximum carapace width in adult males, nearly 3/4 in females. Pincers distinctly unequal, relatively smooth; fingers meeting only at tips, more gaping in larger hand, size of larger hand increasing disproportionately with age, especially in males. Walking legs sparsely hairy on margins, dactyls with 4 rows of spines. Color: juveniles dark brown; transitional stage dark purple and orange; adults lavender blue, females change to white or dull yellow at time of ovulation (once attained, color remains through autumn and winter in Florida population); males sometimes undergo less frequent and usually incomplete color changes.
Adults are terrestrial and can live as far as 5 miles away from the shore. They only return to the sea to drink and breed (Ref. 82656). Supratidal to intertidal (Ref. 97531). Nearly terrestrial species. Lives in great concentration in burrows (to 1.5 m deep) in relatively low lying ground, but also along canals or ditches among rocks and debris. Common in mangrove areas. Burrows may be as far as 8 km from the sea but always where the water table (fresh or salt) can be reached. Normally lives sub-aerially, occasionally wetting the gills, but can survive long periods of immersion and can adapt easily to great variations in water salinity. Females return briefly to the sea where eggs must hatch and larvae undergo developmental changes before transformation to the emergent crab stage. Feeds on a wide variety of plant material, occasionally some carrion. Cannibal (Ref. 367). Herbivore. Also an opportunistic feeder, consuming fiddler crabs, insects and carrion (Ref. 112918). Functionally an omnivore (Ref. 112923).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Reproductive activity peaks during full moons in summer (Ref. 82656).
主要參考資料
參考文獻 | 合作者 | 合作者
Tavares, M. 2003. (Ref. 367)
IUCN 瀕危狀態 (Ref. 130435)
CITES狀態 (Ref. 108899)
Not Evaluated
Not Evaluated
人類使用
漁業: 商業性
| FishSource | 周邊海洋
工具
網路資源
Estimates based on models
Preferred temperature
(Ref.
115969): 25.3 - 28.3, mean 27.4 (based on 395 cells).
回復力
中等的, 族群倍增時間最少 1.4 - 4.4年 (K=0.13-0.19).
Prior r = 1.05, 95% CL = 0.69 - 1.58, Based on 1 data-limited stock assessment.
價格種類
Unknown.
