Animal ecology Animal Ecology 6 Plant Pests, (New March 2000) 5 Animal behavior 4 Behaviour 4 Biological Control 4 Biological control 4 Natural enemies 4 Taxonomy and Evolution 4 Behaviour (Wild Animals), (New March 2000) 3 Biodiversity 3 Feeding behaviour 3 Insects 3 Pest control 3 Plant pests 3 Taxonomy 3 Anatomy and Morphology (Wild Animals), (New March 2000) 2 Animal behaviour 2 Animal populations-Ecology 2 Biodiversity conservation 2 Biological Resources (Animal) 2 Chemical control 2 Ecology 2 Evolution 2 Genetic Engineering, Gene Transfer and Transgenics, (New June 2002) 2 Genetic engineering 2 Genetically engineered organisms 2 Genetics and Molecular Genetics (Wild Animals), (New March 2000) 2 Geographical distribution 2 Horticultural Crops, (New March 2000) 2