Botrylloides violaceus Image 10-B diegensis
Closeup of an orange colony of
Botrylloides diegensis in San Francisco Bay.
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Botrylloides violaceus Image 9-larva
A
Botrylloides violaceus larva. Note the large number of fingerlike larval ampullae (about 18 visible in the photo) on the head (at left in image).
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Botrylloides violaceus Image 8-closeup adjoining colonies
Closeup of two adjoining colonies of
Botrylloides violaceus in San Francisco Bay. The pigmented ends of blood vessels are visible between the zooids.
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Botrylloides violaceus Image 7-closeup small tan colony
Closeup of a small tan colony of
Botrylloides violaceus, growing on a solitary sea squirt
Molgula manhattensis, in San Francisco Bay. The pigmented ends of numerous blood vessels are visible along the right side of the colony.
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Botrylloides violaceus Image 6-with Jim
A large orange colony of
Botrylloides violaceus growing on seaweed in Puget Sound.
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Botrylloides violaceus Image 5-red colony
A red colony of
Botrylloides violaceus overgrowing the sponge
Halichondria bowerbanki in San Francisco Bay.
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Botrylloides violaceus Image 4-orange & red colonies
Orange and red colonies of
Botrylloides violaceus growing on ropes in Tomales and San Francisco bays. A yellow sponge (
Halichondria bowerbanki) and a tan bushy bryozoan (
Bugula sp.) are also present in the right-hand photo.
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Botrylloides violaceus Image 3-different colors on tire
Botrylloides violaceus colonies of several different colors growing on a tire hanging from a dock in Willapa Bay, Washington.
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Botrylloides violaceus Images 2 & Key-zooids appear in oval systems
A Botrylloides violaceus colony in which many of the zooids appear to be in oval systems like those in Botryllus schlosseri. However, the narrow ends of the teardrop-shaped zooids point away from the ovals, and the ends of blood vessels appear as small blobs within the ovals (see enlarged image).
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Botrylloides violaceus Image 1-orange colony on mussel
An orange
Botrylloides violaceus colony on a bay mussel (
Mytilus trossulus-galloprovincialis complex) in San Francisco Bay. Note the meandering double rows of zooids that are characteristic of this species.
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