Pearsonothuria graeffei (Semper, 1868)

Blackspotted sea cucumber

Native range | All suitable habitat | Point map | Year 2050

This map was computer-generated and has not yet been reviewed.

Pearsonothuria graeffei AquaMaps Data sources: GBIF OBIS

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Pearsonothuria graeffei

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | CoL | ITIS | WoRMS

Holothuroidea | Holothuriida | Holothuriidae

Environment: milieu / climate zone / Mức độ sâu / distribution range Sinh thái học

Cùng sống ở rạn san hô; Mức độ sâu 0 - 30 m (Tài liệu tham khảo 122). Tropical

Distribution Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Những chỉ dẫn

Indo-Pacific, excluding the Persian Gulf and Hawaii.

Length at first maturity / Bộ gần gũi / Weight / Age

Chín muồi sinh dục: L_m ? range ? - ? cm Max length : 45.0 cm TL con đực/không giới tính; (Tài liệu tham khảo 122); common length : 35.0 cm TL con đực/không giới tính; (Tài liệu tham khảo 122); Khối lượng cực đại được công bố: 1.3 kg (Tài liệu tham khảo 122)

Short description Hình thái học

Mean live weight 700 to 1,300 g; body-wall thickness 0.4 cm. Body sub cylindrical, arched dorsally (bivium) and slightly flattened ventrally (trivium). White conical papillae sparsely distributed on bivium; podia on trivium long and large, their calcareous disc around 240 micrometer in diameter. Mouth ventral, surrounded by 25 large, black brown dots and numerous small black spots; trivium grey, also with small black spots. Spicules on dorsal and ventral tegument with pseudo-tables and rosettes; pseudo-tables consisting of large base with a large hole, and a spiny spire; rosettes numerous, those in the tegument simple, but more complicated in the dorsal papillae and ventral podia; also present around anus are rods, small plates, and tables with very spiny crown; tentacles containing a few rods and large plates derived from rosettes.

Maximum depth from Ref. 85218. Not harvested for bêche-de-mer production (Ref. 122). A coral reef species rarely found in depths of more than 25 m; mostly found on reef slopes close to the coast (Ref. 122, 85218); abundant on corals mixed with calcareous red algae. Population densities generally less than 0.005 per square meter (Ref. 122). In times of considerable irritation, this animal ejects Cuvierian tubules (Ref. 85218). Feeds on the surface of coral colonies and sponges (Ref. 101700).

Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | Larvae

Members of the class Holothuroidea are gonochoric and have only one gonad. Spawning and fertilization are both external and some exhibit brooding. Life cycle: Embryos develop into planktotrophic larvae (auricularia) then into doliolaria (barrel-shaped stage) which later metamorphose into juvenile sea cucumbers.