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Oligochaeta (/ ˌ ɒ l ɪ ɡ ə ˈ k iː t ə,-ɡ oʊ-/) [1] is a subclass of soft-bodied animals in the phylum Annelida, which is made up of many types of aquatic and terrestrial worms, including all of the various earthworms.
The Naididae (including the former family Tubificidae) are a family of clitellate oligochaete worms like the sludge worm, Tubifex tubifex. They are key components of the benthic communities of many freshwater and marine ecosystems. In freshwater aquaria they may be referred to as detritus worms. [1]
Oligochaete worms without any mouth, gut, or nephridial excretory system were first discovered in the 1970s-1980s near Bermuda. [6] They were later found to contain symbiotic chemosynthetic bacteria which serve as their primary food source. O. algarvensis is the species where this symbiosis has been studied in the most detail.
Limnodrilus hoffmeisteri is a segmented oligochaete worm with tapering end and typical body length of 25–40 mm. It has a simple conical shaped head without eyespots and a long cylindrical body with 55-95 segments. Each of segments can regenerate into a new individual when separated from the worm body.
The group is divided into the subclasses Oligochaeta and Hirudinea. The oligochaetes contain the tubificids (Naididae, Lumbricidae, and Lumbriculidae - commonly the tube worms and the earthworms. Hirudinea contains leeches (Hirudinida), Acanthobdellida, and Branchiobdellida. [10] Hirudinea is monophyletic, but the clade is embedded among the ...
Enchytraeus buchholzi/Grindal worms are cultured by aquarists as a fish food, often on a bed of ground coconut shells, or coir, with oatmeal. They are used for conditioning tropical fish before spawning, or for young fast-growing fish. In laboratory testing, Enchytraeus buchholzi were kept in an incubator at 15 ± 2 °C. Water loss and food ...
Limnodriloides is a genus of clitellate oligochaete worms. Species ... (Oligochaeta, Tubificidae)." Journal of Zoology 248.4 (1999): 467–482.
Aeolosoma is a genus of minute annelid worms, variously attributed either to oligochaetes or polychaetes. [2] Unlike most polychaetes, they reside in freshwater environments in various parts of the world. Aeolosoma are transparent worms, very thin and of the length of 1.5–2 mm. [3] They usually reproduce asexually. [4]