Information

Ecological parameter:  feeding habits according to Tachet

Parameter group: life parameters

Explanation:
Eight categories have been defined. Absorbers ("abs") gather organisms able to directly uptake macromolecules from the environment across tegument (e.g. some worms, Eristalis larvae). Deposit-feeders ("dpf") use small organic debris often deposited at the surface of (fine) sediments. Shredders ("shr"; e.g. arthropods with a feeding apparatus of the primitive shredding type) eat coarse detritus, plant or animal material. Carvers, engulfers and swallowers have been included in a single category ("pre"; predators). Scrapers ("scr") are grazing fine organic particles, microphytes and microinvertebrates of the periphyton (around macrophytes) and/or the perilithon (on hard substrates). Despite the variety of feeding strategies in filterers, they have been included in a single category ("fif"). Invertebrates that feed by piercing plants (e.g. filamentous algae for some Trichoptera Hydroptilidae) or animals (e.g. some Heteroptera or Diptera Tabanidae, Rhagionidae and Tabanidae) have been gathered in the "piercer" category ("pie"). Parasites, with specialized feeding apparatus, form the last category ("par").

Additional information:
Note that Several classifications of the Tachet database are on higher taxonomic level than on species level. To display them in the list please enable "include higher taxonomic units" in the "advanced search".

Abbreviations:
AbbreviationExplanation
absabsorber
dpfdeposit feeder
shrshredder
scrscraper
fiffilter-feeder
piepiercer (plants or animals)
prepredator (carver/engulfer/swallower)
parparasite
Assigned taxa for each higher systematic unit
TaxagroupNumber of assigned taxa / total number of taxa - percentage
Porifera3 / 9 - 33.3%
Coelenterata2 / 13 - 15.3%
Turbellaria4 / 60 - 6.6%
Kamptozoa1 / 1 - 100%
Nemertini1 / 1 - 100%
Gastropoda15 / 230 - 6.5%
Bivalvia3 / 66 - 4.5%
Polychaeta1 / 13 - 7.6%
Oligochaeta16 / 234 - 6.8%
Hirudinea10 / 66 - 15.1%
Crustacea11 / 255 - 4.3%
Ephemeroptera16 / 344 - 4.6%
Odonata17 / 158 - 10.7%
Plecoptera9 / 571 - 1.5%
Heteroptera10 / 124 - 8%
Planipennia1 / 12 - 8.3%
Coleoptera53 / 3342 - 1.5%
Trichoptera38 / 1428 - 2.6%
Lepidoptera4 / 18 - 22.2%
Diptera (excl. Chironomidae)2 / 2342 - 0%
Bryozoa6 / 16 - 37.5%