Common names from other countries
Classification / Names / Names
俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS
Environment: milieu / climate zone / depth range / distribution range
生态学
; 深度上下限 0 - 2 m (Ref. 367). ; 30°N - 29°S, 98°W - 34°W
分布
国家 | FAO区域 | 生态系 | 标本纪录 | 简介
Western Atlantic: From USA, the Gulf of Mexico, the Antilles, throughout the Caribbean and Brazil.
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm 5.3 range ? - ? cm Max length : 15.0 cm CW 雄鱼/尚未辨别雌雄; (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 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Reproductive activity peaks during full moons in summer (Ref. 82656).
主要参考文献
参考文献 | 合作者 | 合作者
Tavares, M. 2003. (Ref. 367)
世界自然保护联盟红皮书 (Ref. 130435)
Not Evaluated
Not Evaluated
人类利用
渔业: 商业性
| FishSource | 周边海洋
工具
网络资源
Estimates based on models
Preferred temperature
(Ref.
115969): 25.3 - 28.3, mean 27.4 (based on 395 cells).
回复力
中等的, 族群倍增时间最少 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.
价格分类
Unknown.
