Main Ref. | Weatherly, N.S., 1987 | ||
Fish stage | recruits/juv. | Mean length | 2.00 FL |
Sample size | 20 | Percent empty | |
Country | UK | Locality | 126 m stretch on west bank of River Dee, 3.9 km upstream of Chester weir, 1982 |
Period |
|
Diet percent | Food I | Food II | Food III | Prey stage | Item Name | Comments |
---|---|---|---|---|---|---|
2.89 % | detritus | detritus | debris | n.a./others | debris | 2.7% |
1.67 % | plants | phytoplankton | diatoms | n.a./others | Diatomaceae | 1.6% Diatomaceae |
20.35 % | zoobenthos | insects | insects | larvae | Chironomid larvae | 19.5% Chironomid larvae |
44.59 % | zoobenthos | insects | insects | larvae | aerial insects | 42.8% aerial insects |
19.40 % | zoobenthos | insects | insects | pupae | Chironomid pupae | 18.6% Chironomid pupae |
5.21 % | zoobenthos | worms | non-annelids | juv./adults | Tubificidae | 5% Tubificidae |
0.20 % | zooplankton | plank. crust. | plank. copepods | adults | copepod adults | 0.2% copepod adults |
5.74 % | zooplankton | plank. crust. | plank. copepods | larvae | copepod nauplii | 5.5% copepod nauplii |