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Table 3 Insects escaping from the four-hand neta

From: Processing insect abundance: trading and fishing of zazamushi in Central Japan (Nagano Prefecture, Honshū Island)

Class Order Family Species No. of individuals (%) Wet weight (%)
Insects Ephemeroptera Potamanthidae  
   Baetidae   0.4 0.05
   Ephemerellidae   12.5 27.2
   Heptageniidae   4.8 6.8
  Plecoptera Perlidae   0.04 0.5
   Taeniopterygidae  
   Nemouridae   0.1 0
   Capniidae   0.1 0.05
   Others   0.3 0.05
  Hemiptera Aphelocheiridae  
  Megaloptera Corydalidae Protohermes grandis
  Trichoptera Hydropsychidae   7.1 13.2
   Stenopsychidae Stenopsyche marmorata 0.2b 6
   Rhyacophilidae   1.4 1.8
   Others   0.04 0.05
  Coleoptera Elmidae   0.04 0
   Psephenidae   3.7 11.1
  Diptera    69.5 (Est.) 33 (Est.)
     Total: 2269 Total: 18.7 g
Crustacea Amphipoda   
Annelida Oligochaeta   
Platyhelminthes Tubellaria   
Pisces    Rhinogobius flumineus
  1. aThe fishing session lasted 9 min in total. The fisherman prospected the riverbed one meter and half away from the four-hand net. Insects were caught behind the four-hand net with a seine net (size: 400 cm (long), 70 cm (high), 1 mm (mesh size). Insects escaped from both sizes on 20 cm
  2. bAll instars are of stage 5