Escape from natural enemies depends on the enemies, the invader, and competition

The Natural Enemies of Locusts

Fig. T. Redwing Locust, dead from Beauucria globlllifera. (Natural size). that death occurs about six to eight days after infection. The infected insect ceases feeding, wanders aimlessly about, and just before death hides in a shady spot on or near the ground. The bottom of the cane stools are favourite places. After death, the whole of the inside of the insect is full of a white growth of fung...

Indirect Effects of Pesticides on Natural Enemies

Pesticides including insecticides and miticides are primarily used to regulate arthropod (insect and mite) pest populations in agricultural and horticultural crop production systems. However, continual reliance on pesticides may eventually result in a number of potential ecological problems including resistance, secondary pest outbreaks, and/or target pest resurgence [1,2]. Therefore, implement...

Responses of Crop Pests and Natural Enemies to Wildflower Borders Depends on Functional Group

Increased homogeneity of agricultural landscapes in the last century has led to a loss of biodiversity and ecosystem services. However, management practices such as wildflower borders offer supplementary resources to many beneficial arthropods. There is evidence that these borders can increase beneficial arthropod abundance, including natural enemies of many pests. However, this increase in loc...

Distribution and natural enemies of russian wheat aphid in the fars provience

Assessing the Influence of Bt Crops on Natural Enemies

Transgenic Bt crops expressing proteins derived from Bacillus thuringiensis (Bt) currently are grown commercially in ten countries on over 20 million hectares. Assessing their environmental safety is a critical part of the regulatory approval process and product stewardship for Bt crops. The environmental safety testing process for Bt crops follows a standard risk assessment approach, and invol...