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The effects of simulated acid mist on the growth rates of conifer aphids and the implications for tree health


, : The effects of simulated acid mist on the growth rates of conifer aphids and the implications for tree health. Journal of Applied Entomology 110(5): 524-529

Scots pine trees, Pinus sylvestris, were sprayed with simulated acid mist in the laboratory to test the effects on the nymphal and population growth rates of three species of pine aphid, Schizolachnns pineti, Eulachnus agilis and Cinara pini. The acid treatment was found to promote the mean relative growth rates of both S. pineti and C. pini, while population growth rates were significantly enhanced in S. pineti and E. agilis. The acid treatment was also found to cause necrosis and chlorotic mottlings of needles. The only significant adverse effect of aphids on needles was shown by E. agilis, which was found to further exacerbate the chlorotic mottling of needles caused by acid mist. The possible implications of these findings for field populations of aphids and trees are discussed.

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Accession: 002249484

DOI: 10.1111/j.1439-0418.1990.tb00152.x

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