Effect of Microbial Pesticide on Growth of Micro Animals
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概要
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This study was conducted to determine the effect of microbial pesticide on growth of micro animals such as protozoa and metazoa from measuring specific growth rate (μ) and maximum individual number (N<SUB>max</SUB>) of these micro animals. As a result, protozoa such as<I>Cyclidium glaucoma, Tetrahymena pyriformis</I>and<I>Colpidium campylum</I>and<I>metazoa</I>such as<I>Philodina erythrophthalma</I>and<I>Aeolosoma</I>hemprichi were able to grow in culture of bacterial insecticide such as<I>Bacillus thuringiensis</I>subsp.<I>aizawai</I>KH, <I>B.t.kurstaki</I>and<I>Pseudomonas fluorescens</I>IID5115, but could not grow in culture of fungal insecticide such as<I>Bcauveria bassiana</I>and<I>Trichoderma harzianum</I>.These outcomes suggest that bacterial insecticide will decrease after spreading to environment, but fungal insecticide will survive. So, it was considered that environmental assessment have to be done carefully before using microbial pesticide.
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