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Rotifer Identification: Trichocercidae

Rotifer Identification: Trichocercidae. Rotifer Identification: Trichocercidae. Classification Morphology : Lorica Trophi Identification do’s and don’ts Biogeography Ecology Problems. Classification. Trichocercidae Harring, 1913

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Rotifer Identification: Trichocercidae

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  1. Rotifer Identification: Trichocercidae

  2. Rotifer Identification: Trichocercidae • Classification • Morphology: • Lorica • Trophi • Identification do’s and don’ts • Biogeography • Ecology • Problems

  3. Classification Trichocercidae Harring, 1913 • Ascomorphella Wiszniewski, 1953 (1 sp., in Volvox colonies) • Elosa Lord, 1891 (2 spp., psammobiontic or littoral) • Trichocerca Lamarck, 1801(67 spp.) • subgenus Diurella Bory de St. Vincent, 1824, • subgenus Trichocerca

  4. Morphology: lorica asymmetry! Trichocerca wanarraSegers & Shiel: 7-9 Trichocerca myersi (Hauer): 10 - 13 Trichocerca plaka Myers: 14-17

  5. Morphology: lorica Trichocerca edmondsoni (Myers). 1-4 Trichocerca mollis Edmondson 5-8 Trichocerca maior Hauer. 9-11

  6. Morphology: lorica Trichocerca ornata Myers. 12–14; T. rotundata Myers. 15-19; Trichocerca lata Myers. 20-22

  7. Morphology: trophi asymmetry!

  8. Morphology: trophi

  9. Identification do’s and don’ts • Do: • Always: 1000x, immersion oil • Well-contracted specimens! • Asymmetry: different viewing angle • BOTH trophi and external morphology • Don’t: • Squeeze the animals

  10. Biogeography

  11. Ecology • Marine: 1 species • Freshwater: the rest • Pelagic • Littoral • Psammobiontic • Habitat requirements: mostly “good” quality water (seeSladecek: Brachionus/Trichocerca index) • Feeding: specialized (e.g., T. capucina)

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