Aquafind.com Aquatic Fish Database est. 1991



Search For Tropical Fish Suppliers
    Add Your Company
    Change/Update Your Listing
New Tropical Fish Supplier Additions
Fish Fact Sheets

Search Equipment & Services
    Add Your Company
    Change/Update Your Listing
New Aquarium Equipment Suppliers

Wholesale Ornamental Fish Traders
Aquarist Tropical Fish Traders
Pet Products Traders

Follow Aquafind on Twitter


Events Calendar
Tropical Fish Resources
Tropical Fish Articles
Tropical Fish Books
Featured Product Pages
   Suzhou Hitarget Goldfish Farm
   MAC Certified Fish
Koi Links
Preferred Trader List
Preferred Trader Pending List
Preferred Trader Listing Submission
Scientific Aquacultrue Papers
Tropical Fish Stores

About Aquafind
Aquatic Posters
Contact AquaFind
Currency Converter
Finance/Credit
Weather
World Clock




LANGUAGE
Chinese French German Italian Spanish Russian


Custom Search

Cryptochiton stelleri - Gumboot chiton

Geographic range:
Alaska to southern California

Key features:
Large size and burgundy color.

Similar species:
--

Habitat(s):
bay (rocky shore), exposed rocky shore, kelp forest, protected rocky shore
Cryptochiton stelleri - Gumboot chiton image

 

Primary common name:
Gumboot chiton
  ITIS code:
79032
Synonymous name(s):
--
General grouping:
Snails, limpets, abalone, chitons


Geographic Range
Range description:
Aleutian Islands in Alaska to the southern Channel Islands, California
Northern latitude extent:
--
  Southern latitude extent:
--
East longitude extent:
--
  West longitude extent:
--


Intertidal Height
Lowest intertidal height:
meters OR -1 feet
  Highest intertidal height:
meters OR -2 feet
Intertidal height notes:
Low intertidal, in tide pools and surge channels.


Subtidal Depth Range
Minimum depth:
0 meters OR 0 feet
  Maximum depth:
20 meters OR feet
Subtidal depth notes:
Maximum depth not found, but at least to 20 m.


Habitats
Habitat(s):
bay (rocky shore), exposed rocky shore, kelp forest, protected rocky shore
Habitat notes:
Rare in the low intertidal, but relatively common in kelp forests. Found both on the rocky reef as well as adjacent sandy areas.


Abundance
Relative abundance:
Uncommon


Species Description
General description:
This is the largest chiton in the world and is a monospecific genus (i.e. there are no other Cryptochiton species.). All chitons have eight calcareous plates (or shells), but the mantle of this species completely covers the plates in a burgundy red sheath covered with small bumps (fascicles). Adults tend to be uniform in color, although they can have green algal or other growths on the mantle. The foot is a lighter golden-yellow, and the ventral surface of the mantel is a pale orange-red, often mottled. The mantle of juveniles can be very splotchy, with large light purple patches mixed in with the red.
Distinctive features:
Large size, burgundy color and ability to roll into a sphere if disturbed. This species looks like a rugby ball cut lengthwise but with the coloring of a football.
Size:
Length: up to 33 cm


Natural History
General natural history:
Chitons are an odd kind of mollusk, with eight overlapping plates replacing a single shell. Like other mollusks, they have a powerful foot to firmly grip the rocky substratum. They are very slow moving, and graze the rocks, scraping off algal films or feeding directly on larger algae.

Females lay spiral strings of eggs that re up to 1 m long and a reddish color. These strings are quickly broken by wave action and surge, but this stimulates males to release sperm into the water column. Five days after fertilization, a free-swimming larval stage remains in the water for less than one day, then settles out and develops into a juvenile.

Individuals remain in the same area for multiple years, and may live up to 20 years.
Predator(s):
Predators of juveniles include fishes and sea stars. Adults are parasitized by various snails, most of which rasp into the tissue and consume body fluids.
Prey:
Algal film and algae.


Feeding behavior
Feeding behavior(s):
Herbivore
Feeding behavior notes:
Chitons have a radula and use it to rasp the surface of rocks or algae, scraping off tissue layers. Adults feed mostly on red algae, including Chondracanthus, Mazzaella and Plocamium, but also drift kelp.
 
March - May  
Reproduction:
Spawning can last up to one week and individuals may lose up to 5 percent of their body weight.

 
Cordell Bank National Marine Sanctuary:
--
 
Gulf of Farallones National Marine Sanctuary:
--
 
Monterey Bay National Marine Sanctuary:
None known.
 
Listing Status:
--
 
Monitoring Trends:
--
 
References:
Carlton, J.T. 2007.
The Light and Smith Manual, 4th edition
Intertidal Invertebrates from Central California to Oregon
University of California Press. 1001 p.

Lamb, A. and B. P. Hanby. 2005. Marine life of the Pacific Northwest. Harbour Publishing. 398 p.

Morris, R.H., D.P Abbott, and E.C. Haderlie. 1980. Intertidal Invertebrates of California. Stanford University Press, Stanford, California. 690 p.

 
Data supplied by SIMoN Sanctuary Integrated Monitoring Network
Anthopleura xanthogrammica - Giant green anemone

Contact | Terms of Use | Article Submission Terms | Advertising | Fish Supplier Registration | Equipment Supplier Registration
© 2017 Aquafind All Rights Reserved