Classifying Worm Species - PowerPoint PPT Presentation

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Classifying Worm Species

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  1. Classifying Worm Species

  2. Worms species come in three general categories • Litter dwelling (Epigeic) • Soil dwelling (Endogenic) • And deep burrowing (Anecic)

  3. Identifying Adult Worms • Adult worms have a thickened segment in their mid section that houses their reproductive organs, the clitellum

  4. Litter Dwelling Earthworms • Do not build permanent burrows • Live in and consume the leaf-litter layers of the forest floor • Are typically the kind of worm you would find in a compost heap • Only grow to between 2 cm and 7 cm long

  5. Epigenic Earthworms

  6. Soil Dwelling Earthworms • Build permanent burrows and rarely come to the surface • Are unpigmented • Only come to the surface if there is very heavy rainfall

  7. Endogenic Earthworms

  8. Deep Burrowing Earthworms • Burrow deep into the ground (up to six feet) • Burrows are covered by a pile of feaces and leaves called a “midden” • Deeply pigmented with a lighter tail • Adults can grow up to 15 cm long • Typically used as fishing bait

  9. Deep Burrowing Earthworms

  10. Deep Burrowing Earthworms Burrows

  11. Deep Burrowing Earthworms Midden