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Latest Ascidiacea Stories

2011-08-02 14:11:11

An international team of molecular scientists have discovered that star ascidians, also known as sea squirts, have pacemaker cells similar to that of the human heart.

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2011-07-05 08:00:47

Woods Hole Oceanographic Institution (WHOI) researchers have filled an important gap in the study of tunicate evolution by genetically sequencing 40 new specimens of thaliaceans, gelatinous, free-swimming types of tunicates.

2011-04-19 12:51:24

Animals that reproduce asexually by somatic cloning have special mechanisms that delay ageing provide exceptionally good health.

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2011-04-11 11:32:26

A filter-feeding sea animal holds the promise of unraveling the complex mechanisms underlying heart formation and developing new diagnostics for congenital heart defects.

2010-07-30 16:10:33

Using the model organism Ciona intestinalis, commonly known as the sea squirt, researchers at the University of California, Berkeley, have uncovered the origins of the second heart field in vertebrates.

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2010-05-14 07:35:31

An aggressive, invasive aquatic organism that is on the state’s most dangerous species list has been discovered in both Winchester Bay and Coos Bay, and scientists say this “colonial tunicate” – Didemnum vexillum – has serious economic and environmental implications.

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2010-03-02 09:30:20

Alzheimer's disease affects an estimated 27 million people worldwide.


Latest Ascidiacea Reference Libraries

Vase Tunicate, Ciona intestinalis
2014-01-12 00:00:00

The Vase Tunicate (Ciona intestinalis) is a species of sea squirt widely distributed in Northern European waters. It has also spread to other parts of the world, where it is considered invasive. It grows in dense aggregations on any floating or submerged substrate, especially on artificial structures like pilings, aquaculture gear, floats and boat hulls. It is found in the lower intertidal and subtidal zones. Sea squirts have been long recognized as being possibly the closest invertebrate...

Atlantic Fire Ascidian, Pyrosoma atlanticum
2014-01-12 00:00:00

Pyrosoma atlanticum is a species of colonial tunicate found in temperate waters worldwide, usually between 50°N and 50°S. It is most plentiful at depths below 800 feet. It is found in colonies that are pelagic and move throughout the water column. In the evening the colony will move closer to the surface and descend back by dawn. Large colonies can rise and descend more than 2,500 feet in a single day. A colony of this species is cylindrical and can grow up to 2 feet long and 2.5 inches...

Sea Pineapple, Halocynthia roretzi
2014-01-12 00:00:00

The Sea Pineapple (Halocynthia roretzi) is an edible species of tunicate. It is known as the Meongge in Korea and the Hoya or Maboya in Japan. This creature lives in shallow water, usually attached to rocks and artificial substrate. It is adapted to cold water temperatures between 36 and 75 degrees Fahrenheit, but prefer temperatures close to 54 degrees F. This creature is known for both its peculiar appearance, described by journalist Nick Tosches as “something that could exist only in...

Phallusia nigra
2014-01-12 00:00:00

Phallusia nigra is a species of sea squirt (tunicate) found in tropical seas around the world. It is usually found in shallow waters attached to any hard substrate. It is a solitary animal rather than living in colonies. Although the native range of this animal is unknown, the tropical western Atlantic Ocean, the Red Sea and the Indian Ocean are possibilities. Like all ascidians, this species has a thick leathery envelope (tunic) containing cellulosic material. The tunic encloses a...

Painted Tunicate, Clavelina picta
2014-01-12 00:00:00

The Painted Tunicate (Clavelina picta) is a species of sea squirt (tunicate) in the genus Clavelina (known as “little bottles.”). It is found in the waters of Florida, the Bahamas, and the Caribbean. It often occurs in large clusters attached to black coral, sponges, and gorgonians. Colonies may contain hundreds of individuals. This animal, like all ascidians, is a sessile filter feeder. It is about 0.75 inches long and comes in a variety of colors, including reds, purples and yellows....

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Word of the Day
saggar
  • A ceramic container used inside a fuel-fired kiln to protect pots from the flame.
The word 'saggar' may come from 'safeguard'.
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