Necturus iewisi Study: Distribution & Ecology 



27 



Table 11. Contents of digestive tracts from 14 larval and 20 adult Necturus 

 punctatus collected in streams with N. Iewisi. NF = number of food 

 items; % = percentage of total number of food items for each size group. 



Necturus punctatus 



Food items 



Mollusca 

 Gastropoda 

 Pelecypoda 



Annelida 

 Oligochaeta 



Arthropoda 



Arachnida (pseudoscorpion) 



Crustacea 

 Cladocera 

 Ostracoda 

 Copepoda 

 Isopoda 

 Amphipoda 



Chilopoda 



Insecta 



Ephemeroptera 



Plecoptera 



Trichoptera 



Megaloptera 



Diptera 



Simuliidae 



Ceratopogonidae 



Tendipedidae 



Anthomyiidae 



Tipulidae 



Chironomidae 



unidentified 



Hymenoptera 

 Coleoptera (Dytiscidae) 

 Lepidoptera (larva) 

 unidentified 



Unidentified arthropod 

 Totals 



Larvae 

 20-50 mm SVL (14) 91-150 



NF % NF 



Adi 

 mm 



ilts 

 SVL (20) 



% 



15 

 1 



15.2 

 1.0 



1.7 



12.3 



1.0 



2 



3.5 



- 



- 



14 



24.6 



- 



- 



2 



3.5 



- 



- 



3 



5.3 



22 



22.2 



1 



1.7 



6 



6.1 



1.0 



3 



5.3 



6 



6.1 



- 



- 



5 



5.1 



1 



1.7 



22 



22.2 



- 



- 



1 



1.0 



7 



12.3 



l 



_ 



4 



24.6 



- 



- 



1 



1.7 



- 



- 



1 



1.7 



- 



- 



57 



100% 



5 



5.1 



3 



3.0 



1 



1.0 



1 



1.0 



3 



3.0 



1 



1.0 



4 



4.0 



1 



1.0 



99 



100% 



Mean # food items/ specimen 



4.1 



5.0 



