|
Home >> Science >> Biology >> Flora and Fauna >> Animalia >> Annelida >> Oligochaeta |
|
Arhynchobdellida Haplotaxida Rhynchobdellida A Oligochaeta or even "few-bristled" worms (singular Oligochaete worm, IPA /ˈɒlɪgoʊˌkit/) come easily-segmented Annelids, most using the spacious coelom that is used as a hydroskeleton. Their setae (chaetae) or "bristles" come typically couple of around total & it lack a parapodia of the polychaeta. It own external fertilization, however copulate & store sperm cell around the receptacle known as the spermatheca. Such as a leeches, they have a clitellum which secretes a "cocoon" into which two eggs & spermatozoon come deposited & which acts as an brooder for the embryonic worms. It lack the trochophore larval stage. This taxonomic category contains in a main freshwater & semi-terrestrial forms, including the earthworms (some of which are then fully terrestrial), a tubificids, pot worms, ice worms and numerous interstitial marine worms. Virtually all come detritus feeders. A bit of genera come predaceous (Agriodrilus and Phagodrilus).
de:Wenigborster pt:Oligochaeta sv:Fåborstmaskar | |
|
Oligochaeta A nice summary of the families of freshwater Oligochaetes found in North America. Earthworm Biology and Production Information circular from University of Florida, Institute of Food and Agricultural Sciences. Earthworm Information Extensive information about individual species, ecology and biology, and role in agriculture. |
© 2005 GeneralAnswers.org