Tresus

Tresus is a genus of saltwater clams, marine bivalve mollusks in the family Mactridae. Many of them are known under the common name the horse clam or as species of gaper clam. They are similar to geoducks.

Species

Species within the genus Tresus include:

  • Tresus allomyax (Coan & Scott, 2000) – strange gaper
  • Tresus capax (Gould, 1850) – fat gaper
  • Tresus keenae (Kuroda & Habe, 1950) – mirugai clam
  • Tresus nuttallii (Conrad, 1837) – Pacific gaper
  • Tresus pajaroanus (Conrad, 1857) – lost gaper

    • Habitat

    These species' habitat is the lower intertidal zones on out to waters as deep as 50–60 feet (13–15 m). They prefer sand, mud, and gravel substrates, normally burying themselves 12–16 inches (30–41 cm), so they are much easier to dig than geoducks. Their preferred substrates are also preferred by butter and littleneck clams, so horse clams are often taken incidentally in commercial harvesting.

    Tresus clams often have a relationship with small commensal pea crabs, often a mating pair, which enter through the large siphon and live within the mantle cavity of the horse clam. The crabs are easily seen and in no way affect the clam as food. The meat is good and makes excellent chowder. They tend to be ignored by sport diggers in Washington but not in Oregon.

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    Cursed Be Iron

    by: Turisas

    Curses on thee, cruel iron
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    Once thou wert of little value
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    On the borders of the cloudlets
    In the blue vault of the heavens
    Thou wert once of little value
    Having neither form nor beauty
    Neither strength nor great importance
    When like water thou wert resting
    On the broad back of the marshes
    On the steep declines of mountains
    When thou wert but formless matter
    Only dust of rusty color
    Curses on thee, cruel iron
    Curses on the steel thou givest
    Curses on thee, tongue of evil
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    Surely thou hadst little value
    When the skillful Ilmarinen
    First of all the iron-workers
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    Truly thou hadst little vigor
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    When thou in the fire wert hissing
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    From the furnace of the smithy
    When thou gavest oath the strongest
    By the furnace, by the anvil
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    Curses on thee, cruel iron
    Curses on the steel thou givest
    Curses on thee, tongue of evil
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    Now forsooth thou hast grown mighty
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    Tell who drove thee to this mischief
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    Tell me! Now tell me!
    Did thy father, or thy mother
    Did the eldest of thy brothers
    Did the youngest of thy sisters
    Did the worst of all thy kindred
    Not thy father, nor thy mother
    Not the eldest of thy brothers
    Not the youngest of thy sisters
    Not the worst of all thy kindred
    But thyself hast done this mischief
    Thou the cause of all our trouble
    Come and view thine evil doings
    And amend this flood of damage
    Curses on thee, cruel iron
    Curses on the steel thou givest
    Curses on thee, tongue of evil




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