From the same paper and for clarity:
"Overall, vegetation, fish, and Cambaridae made up the highest mean proportion of stomach contents by weight (27.5%, 20.6%, and 19.9% respectively;F 5 6.31, d.f. 5 7207, P , 0.001; Fig. 1). Trichopterans constituted the next highest proportion (4.6%), while Collembola, Coleoptera, Odonata, and Bivalvia were minor proportions. A plot of prey items on axes of prey-specific abundance and percent occurrence indicated that for the majority of prey items, both prey-specific abundance and percent occurrence were relatively low (Fig. 2). Other prey items of interest, but that were rarely found in the diet, included glass shrimp (Palaemonetes kadiakensis), smartweed (Polygonum spp.) fruits, beggar's ticks (Bidens spp.) fruits, corn (Zea mays) kernels, Asian clams (Corbicula fluminea) and zebra mussel (Dreissena polymorpha). Other larger vertebrates that were also found included a false map turtle (Graptemys pseudogeographica), a vole (Microtus ochrogaster), and an unidentifiable passerine bird. A few fish had consumed larger inorganic items, such as rocks, silicone caulking, and rubber."
Fish and Crayfish made up over 40% by mass of gut contents.
From Discussion: "This pattern indicates a generalist feeding habit, with no especially dominant food items (Amundsen et al., 1996), though vegetation, Cambaridae, and fish remains were the most commonly encountered items in catfish stomachs, and constituted the largest proportion of food items in channel catfish diets."
If you search the title on Google Scholar, and open all versions, you can select a pdf version and see all the text.
Last edited by RAH; 09/08/19 09:11 AM.
