Polyplacophora |
Chitonida |
Ischnochitonidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic. Subtropical
Western Pacific: Japan, south to the Philippines.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 2.5 cm TL male/unsexed; (Ref. 283)
Valves broad; mostly light grayish brown; variously blotched with white, cream, pink, reddish chestnut or blackish brown; some specimens are olive colored mottled with white. Valve surface microgranulose, sculptured with numerous weak, glossy, radiating riblets. Girdle scaly and colored in alternating yellowish and grayish or brownish bands.
Found from intertidal to 50 m, on rocks and gravel (Ref. 75835). Also found under stones, just before Sargassum sp. (Ref. 128661).
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 Selected Chitons of Asia, Japan and Pacific region. A Gallery of Worldwide Chitons: http://home.inreach.com/burghart/asia.html[accessed20/01/06] (Ref. 283)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Tools
More information
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
Fishing Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.
