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Polychaete - Revision history
2026-05-13T12:31:48Z
Revision history for this page on the wiki
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https://wikimd.org/index.php?title=Polychaete&diff=6326952&oldid=prev
Prab: CSV import
2025-02-18T12:15:27Z
<p>CSV import</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 12:15, 18 February 2025</td>
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Prab
https://wikimd.org/index.php?title=Polychaete&diff=5289852&oldid=prev
Prab: CSV import
2024-02-25T14:10:00Z
<p>CSV import</p>
<p><b>New page</b></p><div>'''Polychaetes''' or '''polychaeta''' ([[Greek language|Greek]]: πολύς, ''polys''; "many" and χαίτη, ''chaite''; "long hair") are a [[paraphyletic]] class of [[annelid]] worms, generally marine. They are also known as '''bristle worms''' due to the presence of bristles, or chaetae, which are arrayed along their parapodia (lateral "feet").<br />
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== Anatomy and Morphology ==<br />
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Polychaetes exhibit a wide range of morphologies, but are typically characterized by well-developed heads and segmented bodies. Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, or chaetae, which are made of chitin.<br />
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== Ecology and Life Cycle ==<br />
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Polychaetes occupy a wide range of marine environments, from tidal zones to hydrothermal vents. They play key roles in the benthic (bottom-dwelling) ecology of many marine communities. The life cycle of polychaetes varies widely, but can generally be characterized by both sexual and asexual reproduction.<br />
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== Classification ==<br />
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Polychaetes are a class within the phylum Annelida. They are divided into many families and include over 10,000 species. Some well-known groups include the lugworms (Arenicolidae), the clam worms (Nereididae), and the fan worms (Sabellidae).<br />
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== Research and Importance ==<br />
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Polychaetes are important both ecologically and economically. They are a major part of the diet of many marine animals, and their burrowing activities play a significant role in sediment mixing. Economically, some species are harvested for bait, while others are important in the degradation of organic pollutants.<br />
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== See Also ==<br />
* [[Annelid]]<br />
* [[Marine biology]]<br />
* [[Benthic zone]]<br />
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== References ==<br />
<references /><br />
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[[Category:Polychaetes]]<br />
[[Category:Annelida]]<br />
[[Category:Marine biology]]<br />
[[Category:Invertebrates]]<br />
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{{stub}}</div>
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