ADW: Cryptochiton stelleri: INFORMATION

<!DOCTYPE html> <html xmlns:og="http://ogp.me/ns#" lang="en" xml:lang="en"> <head> <title>ADW: Cryptochiton stelleri: INFORMATION</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="canonical" href="https://animaldiversity.org/accounts/Cryptochiton_stelleri/" /> <script type="text/javascript" src="//code.jquery.com/jquery-3.6.0.min.js"></script> <script type="text/javascript" src="//code.jquery.com/jquery-migrate-3.3.2.min.js"></script> <script type="text/javascript" src="/static/js/compat.js"></script> <link rel="shortcut icon" href="https://animaldiversity.org/favicon.ico" /> <link href="//fonts.googleapis.com/css?family=Gentium+Book+Basic:400,400italic,700,700italic" rel="stylesheet" type="text/css" /> <link href="//fonts.googleapis.com/css?family=PT+Sans:400,700,400italic,700italic" rel="stylesheet" type="text/css" /> <link rel="stylesheet" type="text/css" href="/static/bootstrap/css/bootstrap.css" /> <link rel="stylesheet" href="/static/css/pica.styles.css" /> <link rel="stylesheet" href="/static/css/pica.print.css" media="print" />  <link rel="stylesheet" type="text/css" href="/static/colorbox/colorbox.css" /> <meta property="og:url" content="https://animaldiversity.org/accounts/Cryptochiton_stelleri/" /> <meta content="Cryptochiton stelleri (Giant Pacific Chiton)" property="og:title" /> <meta content="website" property="og:type" /> <meta content="Animal Diversity Web" property="og:site_name" /> <meta content="https://animaldiversity.org/collections/contributors/Grzimek_inverts/Polyplacophora/Cryptochiton_stelleri/medium.jpg" property="og:image" /> <meta name="twitter:card" content="summary" /> <meta name="twitter:site" content="@AnimalDiversity" /> <meta name="twitter:title" content="Cryptochiton stelleri (Giant Pacific Chiton)" /> <meta name="twitter:description" content="Read about Cryptochiton stelleri (Giant Pacific Chiton) on the Animal Diversity Web." /> <meta name="twitter:image:src" content="https://animaldiversity.org/collections/contributors/Grzimek_inverts/Polyplacophora/Cryptochiton_stelleri/medium.jpg" /> <meta name="twitter:image:height" content="452" /> <meta name="twitter:image:width" content="640" /> <meta name="twitter:url" content="https://animaldiversity.org/accounts/Cryptochiton_stelleri/" /> <script type="text/javascript" src="/static/js/Hyphenator.js"></script> <link rel="stylesheet" href="/static/social-likes/social-likes_birman.css" /> <style> .social-likes { margin: 0; } .social-likes__widget { margin: 0; } </style>   </head> <body> <div id="outerwrap"> <div id="header" aria-role="header"> <h1> <a id="homelink" href="/">Animal Diversity Web</a> </h1> <div class="umlinks"> <div class="relative"> <a href="https://lsa.umich.edu/ummz/" id="ummzlink">University of Michigan Museum of Zoology</a> <a href="https://www.umich.edu/" id="umlink">University of Michigan</a> </div> </div> </div> <div id="wrap" class="gradient"> <div class="container-fluid"> <div class="row-fluid"> <div class="span2 sidebar left"> <ul class="nav nav-tabs nav-stacked" id="sitemap"> <li> <a href="/">Home</a> </li> <li> <a href="/about/">About Us</a> </li> <li> <a href="/animal_names/">About Animal Names</a> </li> <li> <a href="/teach/">Educational Resources</a> </li> <li> <a href="/collections/">Special Collections</a> </li> <li> <a href="/glossary/">Glossary</a> </li> <li> <a href="/accounts/Animalia/">Browse Animalia</a> </li> </ul> <h2 class="offscreen">More Information</h2> <div class="well"> <h3>Additional Information</h3> <ul class="unstyled"> <li> <a href="http://eol.org/search/?q=Cryptochiton stelleri&search=Go">Encyclopedia of Life</a> </li> </ul> </div> </div> <div class="span7_5 blahblahblah main" aria-role="main"> <h2 class="rank-species">Cryptochiton stelleri<span class="vernacular-name">Giant Pacific Chiton</span></h2> <div class="social-likes" data-counters="no"> <div class="facebook" title="Share link on Facebook">Facebook</div> <div class="twitter" title="Share link on Twitter">Twitter</div> </div> <div class="snapshots" aria-hidden="true"> <ul> <li> <a href="/accounts/Cryptochiton_stelleri/pictures/collections/contributors/Grzimek_inverts/Polyplacophora/Cryptochiton_stelleri/"> <img alt=" " src="/collections/contributors/Grzimek_inverts/Polyplacophora/Cryptochiton_stelleri/button.jpg" border="0" /> </a> </li> </ul> </div> <div class="byline">By Almaz Kinder</div> <nav class="contents"> <ul> <li> <a href="#geographic_range">Geographic Range</a> </li> <li> <a href="#habitat">Habitat</a> </li> <li> <a href="#physical_description">Physical Description</a> </li> <li> <a href="#reproduction">Reproduction</a> </li> </ul> <ul> <li> <a href="#behavior">Behavior</a> </li> <li> <a href="#food_habits">Food Habits</a> </li> <li> <a href="#economic_importance_positive">Economic Importance for Humans: Positive</a> </li> <li> <a href="#conservation_status">Conservation Status</a> </li> </ul> <ul> <li> <a href="#comments">Other Comments</a> </li> <li> <a href="#contributors">Contributors</a> </li> <li> <a href="#references">References</a> </li> </ul> </nav> <div class="inner-wrap"> <section class="hyphenate"> <h3 id="geographic_range">Geographic Range</h3> <p audience="intermediate advanced">Alaska to Channel Islands, California to Japan</p> <ul class="keywords donthyphenate last"> <li class="keywords-header">Biogeographic Regions</li> <li> <a class="gloss" href="#20020915001348">oriental</a> <ul> <li> <a class="gloss" href="#20020904145365">native</a> </li> </ul> </li> <li> <a class="gloss" href="#20020904145571">oceanic islands</a> <ul> <li> <a class="gloss" href="#20020904145365">native</a> </li> </ul> </li> <li> <a class="gloss" href="#20020917114731">pacific ocean</a> <ul> <li> <a class="gloss" href="#20020904145365">native</a> </li> </ul> </li> </ul> </section> <section class="hyphenate"> <h3 id="habitat">Habitat</h3> <p audience="intermediate advanced">Among rocks, near low-tide level to water 60' (18 m) deep. May be found in shallow waters during spawning season in May.</p> <ul class="keywords donthyphenate last"> <li class="keywords-header">Aquatic Biomes</li> <li> <a class="gloss" href="#20020904145825">coastal</a> </li> </ul> </section> <section class="hyphenate"> <h3 id="physical_description">Physical Description</h3> <p audience="advanced intermediate">Commonly called the gumboot "chiton," <span rank="Species" class="taxon-link rank-species">Cryptochiton stelleri</span> is the world's largest chiton species, reaching a length of 14 inches.</p> <ul class="keywords donthyphenate last"> <li class="keywords-header">Other Physical Features</li> <li> <a class="gloss" href="#20020916131519">ectothermic</a> </li> <li> <a class="gloss" href="#20020904145642">bilateral symmetry</a> </li> </ul> </section> <section class="hyphenate"> <h3 id="reproduction">Reproduction</h3> <p audience="intermediate advanced">Separate sexes; males deposit sperm into water and females lay eggs in strings, clusters or spiral arrangements. Eggs may be free-floating single cells or enclosed in jelly-like capsules or strings.</p> </section> <section class="hyphenate"> <h3 id="behavior">Behavior</h3> <p audience="intermediate advanced">Usually nocturnal, browse surface of intertidal rocks for food. They also have an amazing ablility to cling to rocks.</p> </section> <section class="hyphenate"> <h3 id="food_habits">Food Habits</h3> <p audience="intermediate advanced">Feeds on various fleshy and coraline algae such as sea lettuce, also on bryzoans and diatoms.</p> </section> <section class="hyphenate"> <h3 id="economic_importance_positive">Economic Importance for Humans: Positive</h3> <p audience="intermediate advanced">Some species of chitons are often found in Indian and West Indian foods, and they are used as bait.</p> </section> <section class="hyphenate"> <h3 id="conservation_status">Conservation Status</h3> <p audience="intermediate advanced">Common.</p> <ul class="aside block-grid donthyphenate one-up"> <li> <dl> <dt>IUCN Red List <a href="http://www.iucnredlist.org/">[Link]</a></dt> <dd>Not Evaluated</dd> </dl> </li> </ul> </section> <section class="hyphenate"> <h3 id="comments">Other Comments</h3> <p audience="intermediate advanced">There are over 600 species of chitons, and one of the most diverse groups is found on the Pacific Coast. To keep its surface clean of other organisms, a chiton secretes a mucus that swells on contact with water. This touh mantle completely covers the chiton's eight transverse shell plates, and prevents foreign organisms from attaching to the spines of the girdle.</p> </section> <section class="hyphenate"> <h3 id="contributors">Contributors</h3> <p>Almaz Kinder (author), University of Michigan-Ann Arbor. </p> </section> <section class="offscreen"> <h3 id="glossary">Glossary</h3> <div id="20020917114731"> <dl> <dt>Pacific Ocean</dt> <dd> <p>body of water between the southern ocean (above 60 degrees south latitude), Australia, Asia, and the western hemisphere. This is the world's largest ocean, covering about 28% of the world's surface.</p> <p align="center"> <img alt="World Map" src="/images/worldmap.2001.jpg" /> </p> </dd> </dl> </div> <div id="20020904145642"> <dl> <dt>bilateral symmetry</dt> <dd> <p>having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.</p> </dd> </dl> </div> <div id="20020904145825"> <dl> <dt>coastal</dt> <dd> <p>the nearshore aquatic habitats near a coast, or shoreline.</p> </dd> </dl> </div> <div id="20020916131519"> <dl> <dt>ectothermic</dt> <dd> <p>animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature</p> </dd> </dl> </div> <div id="20020904145365"> <dl> <dt>native range</dt> <dd> <p>the area in which the animal is naturally found, the region in which it is endemic.</p> </dd> </dl> </div> <div id="20020904145571"> <dl> <dt>oceanic islands</dt> <dd> <p>islands that are not part of continental shelf areas, they are not, and have never been, connected to a continental land mass, most typically these are volcanic islands.</p> </dd> </dl> </div> <div id="20020915001348"> <dl> <dt>oriental</dt> <dd> <p>found in the oriental region of the world. In other words, India and southeast Asia.</p> <p align="center"> <img alt="World Map" src="/images/worldmap.2001.jpg" /> </p> </dd> </dl> </div> </section> <section class="hyphenate"> <h3 id="references">References</h3> <p id="f3884754545db72fc86163cbb2375abc">Abbott, R.T. 1954. American Seashells. D. Van Nostrand Co., Inc.</p> <p id="66c0fbd63eee65586be9b53be66dac53">Abbott, R.T. 1986. A Guide to Field Identification: Seashells of North America. Golden Press, New York.</p> <p id="dd7127f73c5e311b79417dca90717c0a">Cernohursky, W.O. 1967. Marine Shells of the Pacific. Pacific Publications.</p> <p id="9835a949cdbc641e39837a162332e549">Morris, P.A. 1966. A Field Guide to Shells of the Pacific Coast and Hawaii. Houghton Mifflin Company,Boston.</p> <p id="ae26775bbea1967d9e1a42ecd744de65">Rehder, H.A.1994. National Audobon Society Field Guide to North American Seashells. Chanticleer Press, Inc., New York.</p> <p id="f2e12c68ec67b403ec126233db642fbc">Rogers, J.E. 1908. The Shell Book. Charles T. Branford Co., Publishers, Boston.</p> <p id="b25df58b9cf7d187974a98ebdf5d4165">Sabelli, B. 1979. Simon & Shuster's Guide to Shells. Simon & Shuster, Inc.</p> </section> </div> </div> <div class="span2_5 right sidebar"> <div class="well" id="pocket-guide-link"> <a href="https://itunes.apple.com/us/app/adw-pocket-guide/id916179421?mt=8" target="_blank"><i class="icon-download icon-white" style="vertical-align: bottom"></i> ADW Pocket Guides on the iOS App Store! </a> <p>The Animal Diversity Web team is excited to announce ADW Pocket Guides!</p> <p> <a href="/news/5009059054038197651/">Read more...</a> </p> </div> <h2 class="offscreen">Search</h2> <div id="site-search"> <form action="/search" method="GET"> <label for="q" class="offscreen">Enter search text</label> <input value="" id="q" name="q" class="span12" size="15" type="text" placeholder="Search ADW" /> <button class="btn"> <i class="icon-zoom-in"></i> <span class="offscreen">Search</span> </button> <p style="max-height: 35px"> <label for="feature-list" class="offscreen">Search in feature</label> <select size="1" name="feature" class="feature-list input-medium" 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class="feature-off feature-maps"></span> </div> </li> <li class="active"> <span class="rank">Species</span> <a href="/accounts/Cryptochiton_stelleri/" class="taxon-name rank-species">Cryptochiton stelleri</a> <span class="vernacular-name">Giant Pacific Chiton</span> <div class="features"> <a href="/accounts/Cryptochiton_stelleri/" class="feature feature-information" rel="tooltip" data-original-title="Cryptochiton stelleri: information (1)" data-delay="250" data-total="1">Cryptochiton stelleri: information (1)</a> <a href="/accounts/Cryptochiton_stelleri/pictures/" class="feature feature-pictures" rel="tooltip" data-original-title="Cryptochiton stelleri: pictures (1)" data-delay="250">Cryptochiton stelleri: pictures (1)</a> <span class="feature-off feature-specimens"></span> <span class="feature-off feature-sounds"></span> <span class="feature-off feature-maps"></span> </div> </li> </ul> </div> </div> </div> </div> </div> <div id="footer" aria-role="contentinfo"> <div class="inner-footer"> <div class="page-citation"> <p class="content">To cite this page: Kinder, A. 1999. "Cryptochiton stelleri" (On-line), Animal Diversity Web. Accessed November 25, 2024 at https://animaldiversity.org/accounts/Cryptochiton_stelleri/</p> </div> <div class="disclaimer"> <p class="content"><strong>Disclaimer:</strong> The Animal Diversity Web is an educational resource <strong>written largely by and for college students</strong>. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. 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ADW: Cryptochiton stelleri: INFORMATION