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Bristle worms (Polychaeta) | |
 | Katalog / Natur / Liv / Animals (Animalia) / Annelid worms (Annelida) / Bristle worms (Polychaeta) |
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Class Polychaeta
Polychaetes include such forms as sand worms, tube worms, and clam worms. Most have well developed, paired, paddle-like appendages (parapodia), well developed sense organs, and numerous setae (usually on the parapodia; "polychaete" means "many hairs"). Polychaetes usually have a well-developed head, often complete with well-developed eyes, antennae, and sensory palps. They lack any permanent sex organs (in contrast to other kinds of annelids); gonads appear as swellings during the breeding season. Gametes are shed into the coelom and carried outside the body through the nephridia or as a result of the body wall actually rupturing. Fertilization is external, and development proceeds indirectly through a trochophore larva. [eng] |
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Introduction to the Polychaeta
Polychaetes are known by many names: lugworms, clam worms, bristleworms, fire worms, palolo worms, sea mice, featherduster worms, etc., but all possess an array of bristles on their many leg-like parapodia -- the name polychaete, in fact, means "many bristles". The many common names reflect the wide array of body forms found in this group, unlike the earthworms and leeches which all have the same general appearance. [eng] |
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Beachworms (Onuphid)
Details of the current research on beachworms being conducted at the University of Queensland (Department of Zoology) by Matthew O'Brien for his PhD. [eng] |
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Index to Delta treatment of polychaetes
This site is the output of a project aimed to coordinate polychaete taxonomy from environmental surveys in south-eastern Australia. [eng] |
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Guide to Singapore Polychaetes
An introduction to Polychaetes, a list of families, a very nice interactive system for Polychaete identification, a glossary, references and more! [eng] |
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