and Plecoptera dominated in control sites of the Virvyte River.
Studies on clay pans in arid Australia, ponds in the UK, and African saline lakes likewise revealed many Coleoptera, Diptera, Trichoptera
and Crustacea that are represented in the perennial pans of Mpumalanga at a generic and even species level (Seaman et al.
1) with out-stretched pedipalps that grasped flying prey such as Trichoptera
Preliminary Survey of the Trichoptera
of North Dakota.
taxa]) orders Ephemeroptera (mayflies), Plecoptera (stoneflies), and Trichoptera
Ross who considered that ancient lines of Trichoptera
had never adapted to the tropics'.
Samples typically yielded less than 10 specimens each, and were mostly composed of Plecoptera, Ephemeroptera, Trichoptera
, and Diptera.
1) Ephemeroptera, Plecoptera, and Trichoptera
taxa (EPT)--These taxa are typically less tolerant of perturbation than many other taxa.
The Invertebrate Community Index (Ohio EPA 1989) and Qualitative EPT richness index (the sum of the number of Ephemeroptera (mayflies), Plecoptera (stoneflies), and Trichoptera
(caddisflies) taxa present) are high both upstream and downstream of the Flat Branch.
The myriapods were the most abundant prey recovered with 24 individuals, followed by slugs with 13 individuals, Trichoptera
with 11, Araneae with 6 and Carabidae with 5.
Surface sculpin stomachs contained an average of 76% fish including Percina and Notropis, and 16% invertebrates including Ephemeroptera, Trichoptera
, Zygoptera and Gammaridae.
1999) also found that Trichoptera
was a substantial part of the diet for E.