Polyplacophora | Chitonida
Environment: milieu / climate zone / depth range / distribution range
Northwest Atlantic and Eastern Pacific: USA and Mexico.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 5.1 cm TL male/unsexed; (Ref. 296)
Girdle: Medium wide; sandy, fleshy and thickly covered with bristles. Murco: Highly posterior. Central areas: Granulose cross ribbing with those cross ribs coming from the jugal area heavier until they meet midway the heavier cross ribs coming from the lateral areas. Lateral areas: Broad-ribbed. Color of valves: Black with occasional white stripe down sides of dorsal ridge. Color of girdle: Cream with reddish brown hairs and granular (Ref. 296).
Habitat: Intertidal (Ref. 289); found in mid to high tide zones from Puget Sound to Mexico on rocks, in crevices or among barnacles and mussels (Ref. 312). Occurs from mid to high tide mark. 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. 296)
IUCN Red List Status (Ref. 123251)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models
): 9.6 - 20.2, mean 12.9 (based on 161 cells).
Low vulnerability (10 of 100)