Light bulb tunicates

Light bulb tunicates

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Credit: DR GEORGE GORNACZ/SCIENCE PHOTO LIBRARY

Caption: Light bulb tunicates, Clavelina lepadiformis, a chordate from waters off Lundy Island, North Devon, U.K. They feed by cilary currents, have gill slits for gas exchange and a reduced nervous system. Blood vessels are not present in tunicates instead only a few blood channels. The tubular heart, situated on the ventral side posterior to the pharynx, contracts in a wave like manner; this has the effect of pumping blood through the body. When mature all tunicates are haemaphrodite, though the gonads mature at different times reducing the possibility of self-fertilization.

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Keywords: animal, clavelina lepadiformis, light bulb, light bulb tunicates, nature, tunicates, urochordata, wildlife, zoology

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