The Salps (Class Thaliacea)
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Description: Information from the Earthlife Web on the colony-forming Pyrosomida and the non-colonial Salpida and Doliolida, including their description and their complex life cycle.
The class Thaliacea contains about 70 species of small barrel shaped animals that spend their lives swimming slowly through the warmer seas of the world. They swim as they feed, or visa versa because like all the Urochordates they are filter feeders and they have their inhalant and exhalent siphons at opposite ends of their bodies. The class is divided into 3 orders; the Pyrosomida which are colonial living and the Salpida and Doliolida which are not colonial. Like the Tunicates they feed by drawing a current of water in through their inhalant siphon and out through the exhalent siphon. Between the two siphons the water passes through the many pore or slats of the enlarged pharynx which occupies most of the body cavity. The water current is driven by beating cilia. Small particles of plankton are collected on a film of mucous which continuously passes across the pharynx. This mucous is secreted by special cells and is kept moving by the beating of numerous small cilia until it is swept into the digestive tract.
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| Page title: | The Salps (Class Thaliacea) |
| Keywords: | |
| Description: | An introduction to the biology, classification and ecology of salps, the class Thaliacea |
| IP-address: | 65.254.231.108 |
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| NS | Name Server: NS1.READYHOSTING.COM Name Server: NS2.READYHOSTING.COM |
| WHOIS | Status: clientTransferProhibited |
| Date | Creation Date: 08-jun-1999 Expiration Date: 08-jun-2020 |