| Popis: |
A technique was developed for differentially infecting juvenile rainbow trout, Salmo gairdneri, by introduction of the parasitic gut nematode, Bulbodacnitis ampullastoma. Desired infection levels were induced in trout with 80% success. B. ampullastoma affected growth and food consumption of trout in the laboratory. The effects of the parasite were evident at low and high ration levels. At low and starvation ration levels the parasite effected a withdrawal of the energy stores of the fish. At higher ration levels, the direct effects of the parasite were compounded by apparent parasite interference with food assimilation by the fish.B. ampullastoma was directly infective to a warmwater fish, Lepomis cyanellus. |
