Effect of simulated acid rain on the growth performance of the European pine sawfly (Neodiprion sertifer)
1990
Neuvonen, S. (Aabo Univ. (Finland). Dept. of Biology) | Saikkonen, K. | Suomela, J.
The effect of simulated acid rain on the performance of Neodiprion sertifer larvae fed on treated Scots pine needles was tested in a subarctic area with low ambient pollution level. Acid rain treatments (pH 4 and pH 3, both with H2SO4 and HNO3) did not significantly affect the relative growth rates or cocoon weights of N. sertifer 2 or 3 years after the start of the treatments. The relative growth rate of N. sertifer larvae was slightly (nonsignificantly) higher on plots receiving only ambient rain than on irrigated control plots. The quality of foliage before the start of the treatments expained a significant proportion of the variation in the performance of N. sertifer larvae in the bioassay conducted 3 years later.
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