Polyplacophora |
Callochitonida |
Callochitonidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; depth range 0 - 50 m (Ref. 290). Temperate
Eastern Pacific: Canada and Mexico.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 2.4 cm TL male/unsexed; (Ref. 290)
Body: Elongate oval. Tegmentum color: Variable, may be orange, dark red, greyish brown, with or without large patches of black; Some brightly colored specimens have tail valves that are completely black. Sculpture: Radiating, often branching rows of large granules on the head valve (30-36 rows) and lateral areas (5-8), the rows usually not reaching the apex. Central areas: Fine, close-set lines of granules, the lines becoming larger and further apart towards the outer margins of the valves. Postmucronal area: Scarce, scattered granules. Mucro: Submedian in younger specimens; subterminal in full-grown specimens. Girdle: Rather narrow, evenly orange-brown or greyish brown; with spicules of varying types and sizes; a marginal fringe of straight spicules (290). Valves: Range from bright orange with black tail valve (and white spot) to ashy green with same markings (Ref. 296).
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.
Dickson, R. 2002 Chitons of British Columbia. Royal British Columbia Museum. http://www.royalbcmuseum.bc.ca/nh_papers/chitonkey/intro.htm[accessed25/01/06] (Ref. 290)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Tools
More information
Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
Preferred temperature
(Ref.
115969): 8.7 - 28.2, mean 10.6 (based on 52 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.
