Not assigned |
Testudines |
Cheloniidae
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
Dasar (demersal); kisaran kedalaman 0 - 50 m (Acuan 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 .
Panjang pada saat jatuh tempo pertama / Ukuran / Berat / umur
Kematangan: Lm 60.0 range ? - ? cm Max length : 74.8 cm CL jantan/; (Acuan 74991); 65.7 cm CL (female); common length : 65.6 cm CL jantan/; (Acuan 1397); Berat maksimum terpublikasi: 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.
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).
rujukan utama
Acuan | Koordinator | mitra
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. (Acuan 97534)
Status IUCN Red List
(Acuan 130435: Version 2025-2 (Global))
status CITES (Acuan 108899)
ancaman kepada manusia
penggunaan manusia
Perikanan: komersial
FAO - Publication: search | FishSource | Laut di Sekitar Kita
Alat, peralatan
informasi lanjut
FisiologiKonsumsi oksigen
Yang berhubungan dengan manusiaPerangko, koin, dll.
Sumber internet
Estimasi berdasarkan model
Daya lenting
(Ref. 69278): |
Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (K=0.13-1.3; tm=9.5) |
Kerentanan Penangkapan Ikan
(Acuan 71543) |
Moderate to high vulnerability (48 of 100). |
kategori harga
(Acuan 80766): |
Unknown. |
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