Harpacticoida is an order of , in the subphylum Crustacean. This order comprises 463 genus and about 3,000 species; its members are benthic found throughout the world in the marine environment (most families) and in fresh water (essentially the Ameiridae, Parastenocarididae and the Canthocamptidae). A few of them are or live in association with other organisms. Harpacticoida represents the second-largest group in , after . In Arctic and Antarctic seas, Harpacticoida are common inhabitants of sea ice. The name Harpacticoida comes from the Greek noun harpacticon (rapacious predator) and the suffix -oid (akin to) and means reminiscent of a predator .
Harpacticoids are distinguished from other copepods by the presence of only a very short pair of first antennae. The second pair of antennae are biramous, and the major joint within the body is located between the fourth and fifth body segments. They typically have a wide abdomen, and often have a somewhat worm-like body.
Families
- Adenopleurellidae
- Aegisthidae
- Ameiridae
- Ancorabolidae
- Arenopontiidae
- Argestidae
- Balaenophilidae
- Canthocamptidae
- Chappuisiidae
- Cletodidae
- Cletopsyllidae
- Cristacoxidae
- Cylindropsyllidae
- Dactylopusiidae
- Darcythompsoniidae
- Ectinosomatidae
- Hamondiidae
- Harpacticidae
- Idyanthidae
- Laophontidae
- Laophontopsidae
- Latiremidae
- Leptastacidae
- Leptopontiidae
- Louriniidae
- Metidae
- Miraciidae
- Nannopodidae
- Neobradyidae
- Normanellidae
- Novocriniidae
- Orthopsyllidae
- Parameiropsidae
- Paramesochridae
- Parastenheliidae
- Parastenocarididae
- Peltidiidae
- Phyllognathopodidae
- Pontostratiotidae
- Porcellidiidae
- Protolatiremidae
- Pseudotachidiidae
- Rhizothricidae
- Rometidae
- Rotundiclipeidae
- Superornatiremidae
- Tachidiidae
- Tegastidae
- Tetragonicipitidae
- Thalestridae
- Thompsonulidae
- Tisbidae
- Zosimeidae
External links
- Harpacticoida, Guide to the marine zooplankton of south eastern Australia, Tasmanian Aquaculture and Fisheries Institute
|
|
