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Modiolus modiolus

(Kurilean Horse Mussel)

Common Names

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Common Names in English:

Bearded Mussel, Fan Mussel, Giant Horse Mussel, Horse Mussel, Kurile Horsemussel, Kurilean Horse Mussel, Northern Horsemussel

Description

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Physical Description

Species Modiolus modiolus

This mussel is longer than high, umbones are not quite terminal , attaches by byssal threads to firm substrates, length is about 2-3 times the height , periostracum is usually brown (or black in large individuals) and grown out into long, soft bristles , especially in small individuals and near the margin of the shell . Up to 15 cm long.[1]

Habitat

Muddy bottoms with shell hash. Depth Range : Usually subtidal . Occasionally intertidal (mostly on the underside of rocks)[1]

Typically found in the intertidal zone at the water's edge at a mean distance from sea level of -4 meters (-12 feet).[2]

Ecology: May have a symbiont , the pea crabs Fabia subquadrata or Opisthopus transversus.[1]

Biology

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Diet

[Migration]

Behavior

M. modiolus tends to form aggregates attached to one another and to empty shells .[1]

Predators:

Predators include the sunflower star Pycnopodia helianthoides.[1]

Taxonomy

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Unambiguous Synonyms

  1. Modiolus kurilensis Bernard, 1983


Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 13-Mar-2003.

Similar Species

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M. rectus is about 3x as long as wide and not likely found north of California. M. senshousia is smaller--up to 3 cm long and its periostracum is greenish. (Ref. 109953)

Members of the genus Modiolus

There are approximately 132 species in this genus. Here are just 100 of them:

M. adriaticus · M. adriaticus ovalis · M. aequalis · M. agglutinans · M. agripetus · M. albicostata · M. albicostatus · M. albicostus · M. ameghinoi · M. americana · M. americanus (American Horsemussel) · M. aratus · M. arborescens · M. arcuatula · M. areolatus · M. auriculatus · M. aurum · M. ausiensis · M. australis · M. barbatellus · M. barbatus (Bearded Horse Mussel) · M. bipartitus · M. brasiliensis · M. braziliensis · M. bukharensis · M. capax (Fat Horsemussel) · M. capitatus · M. carpenteri (California Horsemussel) · M. carvalhoi · M. cercadicus · M. chejsleveemensis · M. chiesai · M. coloradoensis · M. comptus · M. copax · M. coralliophagus · M. cottoni · M. cylindricus · M. demissus · M. demissus granosissimus · M. difficilis · M. directus · M. ducatelli · M. ducatellii · M. eiseni (Eisen Horsemussel) · M. elegans · M. elongatus · M. falcatus · M. flabellatus · M. flavida · M. flavidus · M. fornicatus · M. fusca · M. gabbi subconvexus · M. hanleyi · M. hannonicus · M. harrimani · M. hillana · M. hillanus · M. imbricatus · M. incrassatus · M. leckenbyi · M. ligneus · M. lithophaga · M. maedae · M. martorelli · M. matris · M. meeki · M. metcalfei · M. metcalfi · M. micropterus · M. minimus · M. minutus · M. modiolus (Kurilean Horse Mussel) · M. modiolus difficilis · M. modiolus modiolus · M. modiolus squamosus · M. neglectus (Neglected Horsemussel) · M. neozelandic · M. neozelanicus · M. nipponicus · M. nitens · M. ornatus · M. paroni · M. patagonicus · M. peasi · M. peronianus · M. phaseolina · M. phaseolinus · M. philippinarum · M. plicatulus · M. plicatus · M. plumescens · M. politus · M. proclivis · M. pseudotulipus · M. pulex · M. pulvillus · M. pygmaeus · M. radiatus

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 17, 2007:

Identifiers

Footnotes

  1. Cowles, Dave. Key to Invertebrates Found At or Near The Rosario Beach Marine Laboratory (a campus of Walla Walla University) Fidalgo Island, Anacortes, WA May 2009. [back]
  2. Standard Deviation = 426.530 based on 3,026 observations. Terrestrial altitude and ocean depth information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 2009-06-09