Main Ref. | Johnson, J.H. and D.S. Dropkin, 1995 | ||
Fish stage | adults | Mean length | 18.40 TL |
Sample size | 5 | Percent empty | 20 |
Country | USA | Locality | Juniata River, Pennsylvania, 1990 |
Period |
|
Diet percent | Food I | Food II | Food III | Prey stage | Item Name | Comments |
---|---|---|---|---|---|---|
5.90 % | detritus | detritus | debris | n.a./others | debris | |
0.90 % | zoobenthos | insects | insects | nymphs | Chironomidae | Chironomidae |
3.00 % | zoobenthos | insects | insects | nymphs | Ephemerellidae | Ephemerellidae |
5.50 % | zoobenthos | insects | insects | nymphs | Baetidae | Baetidae |
6.80 % | zoobenthos | insects | insects | nymphs | Ephemeroptera | Ephemroptera |
9.30 % | zoobenthos | insects | insects | nymphs | Hydropsychidae | 5.9% misc. Trichoptera, 3.4% Hydropsychidae |
15.50 % | zoobenthos | insects | insects | nymphs | Heptageniidae | Heptageniidae |
16.90 % | zoobenthos | insects | insects | nymphs | insects | misc. aquatic insects |
33.80 % | zoobenthos | insects | insects | nymphs | Ephemeridae | Ephemeridae |
2.40 % | zoobenthos | benth. crust. | n.a./other benth. crustaceans | juv./adults | Decapoda | Decapoda |