Polyplacophora | Chitonida
Environment: milieu / climate zone / depth range / distribution range
Benthic; depth range 0 - 80 m (Ref. 289). Subtropical
Northwest Pacific: Korea, Japan, and China.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 2.5 cm TL male/unsexed; (Ref. 283)
Body elongate, oval shaped; moderately elevated. Valve slate-blue, dark olive-grey or dark grayish brown with blotches of creamy white. Central areas minutely pitted in a chevron-like or quincuncial pattern. Lateral areas slightly raised, clearly marked; sculptured with flat, radiating costae. Girdle narrow; colored like the valves, sometimes with alternating bands of lighter and darker tones; covered with imbricating scales.
Occurs in stony bottoms and in oyster beds (Ref. 289); undersurfaces of stones and rocks (Ref. 1867). Found from intertidal to 80 m (Ref. 75835). Members of the class Polyplacophora are mostly gonochoric. Life cycle: Eggs hatch into lecitotrophic planktonic trocophore larvae (no veliger stage) which later metamorphose and settle on the bottom as young adults (Ref. 833).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the class Polyplacophora are mostly gonochoric. Life cycle: Eggs hatch into lecitotrophic planktonic trocophore larvae (no veliger stage) which later metamorphose and settle on the bottom as young adults.
Burghardt, G. and L. Burghardt. 2006. (Ref. 283)
IUCN Red List Status (Ref. 120744)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models
): 10.2 - 23.9, mean 17.1 (based on 60 cells).
Low vulnerability (10 of 100)