Not assigned |
Testudines |
Cheloniidae
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
居於水底的; 深度上下限 0 - 50 m (參考文獻 138107). Tropical; 60°N - 9°N, 98°W - 17°E
Atlantic Ocean and the Mediterranean: from Mexico, south to Venezuela,, north to UK and east to Italy .
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm 60.0 range ? - ? cm Max length : 74.8 cm CL 雄魚/尚未辨別雌雄; (參考文獻 74991); 65.7 cm CL (female); common length : 65.6 cm CL 雄魚/尚未辨別雌雄; (參考文獻 1397); 最大體重: 0.00 g
Body mass lower than 50,000 g. Carapace of adults are nearly round. Head: moderate-sized; subtriangular. Hatchlings: longer carapace and larger head. As it grows, carapace changes its shape and becomes a little wider. Head with 2 pairs of prefrontal scales. Carapace: with 5 central, 5 pairs of lateral and 12 pairs of marginal scutes; bridge areas have 4 scutes. Each with a pore which is the opening of the Rathke’s gland. This gland plays a pheromonal role in maintaining the integrity of the massed nesting assemblage of females just off the beaches in which it releases an odoriferous substance before and during their arrival. One visible claw on fore flippers; hatchlings show two, in rear flippers 1 or 2 claws. Color: in adults, plain olive-grey dorsally, white or yellowish underneath; in hatchlings, jet black when wet; changes significantly with age; after 10 months, plastron is nearly white.
One of the smallest of the sea turtles. Usually inhabits sandy and muddy bottoms that are rich in crustaceans. A carnivorous species mostly feeds on crustaceans, mollusks, fishes and vegetable fragments. Mating season occurs from April to the end of July. Females are occasionally escorted or seen mating at the near surf area. This turtle are known to be day-time nesters and mass nesting takes place on windy days. The females lay eggs from 1.4 to 1.55 times each season with a number of 102 eggs per clutch. Incubation period lasts for 45 to 58 days depending on temperature and humidity. Commercial exploitation of this species is not allowed throughout its distribution range (Ref. 1397). Usually inhabits sandy and muddy bottoms that are rich in crustaceans (Ref. 1397). A carnivorous species that mostly feeds on crustaceans, mollusks, fishes, vegetable fragments and so on.
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Mating season occurs from April to the end of July. Females are occasionally escorted or seen mating at the near surf area. This turtle are known to be day-time nesters and mass nestings takes place on windy days. The females lay eggs from 1.4 to 1.55 times each season with a number of 102 eggs per clutch. Eggs looks like ping-pong balls with size ranging between 3.4 and 4.5 cm; and weigh from 24 to 40 g. Incubation period lasts for 45 to 58 days depending on temperature and humidity (Ref. 1397). Temperature-dependent Sex Determination (TSD) is demonstrated in this species (Ref. 83971).
主要參考資料
參考文獻 | 合作者 | 合作者
Hirth, H.F. 1993 Chapter 10. Marine turtles. pp. 329-370. In A. Wright and L. Hill (eds) Nearshore marine resources of the South Pacific. Forum Fisheries Agency (Honiara), Institute of Pacific Studies (Suva) and International Centre for Ocean Development (Canada), 710 p. (參考文獻 97534)
IUCN 瀕危狀態
(參考文獻 130435: Version 2025-2 (Global))
極危 (CR) (A2bd); Date assessed: 14 January 2019
CITES狀態 (參考文獻 108899)
對人類具威脅
人類使用
漁業: 商業性
FAO - Publication: search | FishSource | 周邊海洋
工具
網路資源
基於模型的估計
回復力
(Ref. 69278): |
高度, 族群倍增時間少於 15個月 (K=0.13-1.3; tm=9.5) |
釣魚的脆弱性
(參考文獻 71543) |
Moderate to high vulnerability (48 of 100). |
價格種類
(參考文獻 80766): |
Unknown. |
![Image of Lepidochelys kempii (Kemp\](/images/thumbnails/gif/Tn_Lekem_u0.gif "Image of Lepidochelys kempii (Kemp\")