Polyplacophora |
Chitonida |
Ischnochitonidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; depth range 0 - 72 m (Ref. 290). Subtropical
Eastern Pacific: Canada, USA and Alaska.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 2.5 cm TL male/unsexed; (Ref. 296)
Girdle: scaled, where the scales are larger near the valves progressing down in size to smaller ones near the outer edge. Lateral areas: Not distinctly defined. Surface: smooth, even though it looks smooth to the naked eye, is minutely granulated. Mucro: Anti-median. This chiton highly colored and greatly variable (Ref. 296). Tegmentum color: Variable, mostly uniformly creamy yellow, orange, or reddish brown, or dark olive with whitish and brownish streaks radiating from the apices; some are completely white or black, and some have a combination of colors, often with ultramarine blue (Ref. 290).
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 West Coast Chitons. A Gallery of Worlwide Chitons: http://home.inreach.com/burghart/wcoast.html[accessed20/01/06] (Ref. 296)
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): 6.9 - 10.7, mean 8.9 (based on 98 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.