Main Ref. | Ferriz, R.A., 1989 | ||
Fish stage | juv./adults | Mean length | 29.70 TL |
Sample size | 75 | Percent empty | |
Country | Argentina | Locality | Ramos MexĂa Reservoir, autumn 1983 |
Period |
|
Diet percent | Food I | Food II | Food III | Prey stage | Item Name | Comments |
---|---|---|---|---|---|---|
8.80 % | nekton | finfish | bony fish | juv./adults | Galaxias maculatus | Galaxias maculatus |
3.70 % | zoobenthos | mollusks | gastropods | juv./adults | Biomphalaria peregrina | 2.3% Biomphalaria peregrina, 1.4% Chilina gibbosa, 0.3% Littoridina sp. |
7.60 % | zoobenthos | insects | insects | larvae | Aeshnidae | Aeshnidae |
12.30 % | zoobenthos | insects | insects | larvae | Nectopsiche sp. | Nectopsiche sp. |
49.40 % | zoobenthos | insects | insects | larvae | Chironomidae | 49.1% Chironomidae, 0.3% other |
13.70 % | zoobenthos | worms | n.a./other annelids | juv./adults | Hirudinea | Hirudinea |
4.50 % | zoobenthos | benth. crust. | ostracods | juv./adults | ostracods |