insect development stage Articles

  • Elevated major ion concentrations inhibit larval mayfly growth and development

    Anthropogenic disturbances, including those from developing energy resources, can alter stream chemistry significantly by elevating total dissolved solids. Field studies have indicated that mayflies (Order Ephemeroptera) are particularly sensitive to high total dissolved solids. In the present study, the authors measured 20‐d growth and survivorship of larval Neocloeon triangulifer exposed to ...


    By John Wiley & Sons, Ltd.

  • Evaluating exposure and potential effects on honeybee brood (Apis mellifera) development using glyphosate as an example

    This study aimed to develop an approach to evaluate potential effects of plant protection products on honeybee brood with colonies at realistic worst‐case exposure rates. The approach comprised two stages. In the first stage, honeybee colonies were exposed to a commercial formulation of glyphosate applied to flowering Phacelia tanacetifolia with glyphosate residues quantified in relevant ...


    By John Wiley & Sons, Ltd.

  • Polyphagy and primary host plants: oviposition preference versus larval performance in the lepidopteran pest Helicoverpa armigera

    Oviposition preference and several measures of offspring performance of Helicoverpa armigera (Hübner) were investigated on a subset of its host plants that were selected for their reputed importance in the field in Australia. They included cotton, pigeon pea, sweet corn, mungbean, bean and common sowthistle. Plants were at their flowering stage when presented to gravid female moths. Flowering ...


    By Springer

  • What’s Happening to the Birds?

    Following in Rachel Carson’s footsteps, a new generation of scientists investigates a new generation of pesticides. Christy Morrissey is driving her white pickup truck along Canada’s endless prairie highway, windows open, listening for birds. She points to the scatter of ponds glinting in the landscape, nestled among fields of canola that stretch as far as the eye ...


    By Ensia

  • Biotechnology for Environmentally Safe Agriculture

    Issue: In Europe some uses of biotechnology are meeting vocal opposition from certain quarters. Nevertheless, the vast amount of knowledge acquired recently in biology can be used to develop and apply biotechnology for an environmentally safe agriculture. Public acceptance and a new policy impetus can serve to promote the introduction of safe and competitive agricultural technologies that have a ...

  • Ontario Horticulture Research Priority Report 2016

    Sector Consultation The Ontario Fruit and Vegetable Growers Association partnered with Vineland to host a research strategy workshop in November 2014 with the goal of defining the top five research priorities for each crop group. Grower organizations were invited to nominate two representatives to participate on their behalf and a number of researchers from relevant fields were invited to ...

  • Marine Resources : Chitin Research Opens Up Crab Shell Profits

     Building Human Resources Instead of Landfills “The product originally designed was a chipboard four-drawer dresser that retailed for $20,” explains McDonald. The material used was chipboard “blows” or imperfect boards that would normally go to the dump. While durable, it was suitable only for garage or storage use. Manufacturing this dresser allowed the woodshop to learn the process and ...


    By BioCycle Magazine

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