[A]
Acanthostyles < 91 μm. Sponge made up of anastomosing branches. Habitat: bays (Introduced to San Francisco Bay). |
(Ellis & Solander, 1786) |
Sponge:
Encrusting when immature, made up of anastomosing branches when mature.
Color: Alive: Red, orange, brown.
Spicules: Megascleres:
(1) Acanthostyles:
80 - 90 um.
x 7.0 - 8.0 um.
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(2) Styles to Subtylostyles:
155 - 175 um.
x 3.0 -3.5 um.
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(3) Styles to Subtylostyles with microspined heads:
180 - 225 um.
x 10.0 -12.5 um.
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Microscleres:
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(1) Palmate Isochelae:
16 - 20 um.
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(2) Toxas:
15 - 100 um.
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Skeleton:
Ectosome: Smaller Styles to Subtylostyles grouped at surface.
Choanosome: Ascending plumose tracts of large styles to Subtylostyles with terminal tufts that extend beyond the surface. Smaller Styles to Subtylostyles grouped at surface. Acanthostyles sparsely echinating tracts.
Distribution: Central California. Introduced.
Depth: Intertidal.
Note: Was Microciona prolifera.
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Acanthostyles size > 100 μm. Sponge encrusting. Habitat: coast.
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