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Studies of elemental composition as a biological marker in insects. II. The elemental composition of apterae of Rhopalosiphum padi (L.) and Metopolophium dirhodum (Walker) (Hemiptera: Aphididae) from
TLDR
The uniformity of elemental content in the apterae of both aphid species may be a consequence of genetic uniformity within clones of parthenogenetically reproducing species.
A survey of cutworm attacks in England and Wales, and a descriptive population model for Agrotis segetum (Lepidoptera: Noctuidae)
TLDR
A model suggests that weather conditions alone were responsible for the last major cutworm outbreak in 1976, and an index of larval survival to third instar is estimated, based on temperature-rate of development relationships and mortality due to daily rainfall.
A METHOD FOR MASS‐REARING THE CUTWORM AGROTIS SEGETUM IN THE LABORATORY
TLDR
This technique has been used to rear A. segetum continuously for more than twenty generations; cannibalism and infectious disease are rare.
The natural incidence of disease in the cutworm Agrotis segetum in England and Wales
TLDR
Soil-dwelling noctuids, mostly cutworm larvae were collected from various arable crops, from 39 sites in England and Wales between 1975 and 1978, and the possibility of controlling cutworms with their pathogens is discussed.
Some pathogenic effects of a species ofPleistophora [Protozoa, Microsporida] forAgrotis exclamationis and other noctuids
TLDR
Larvae of noctuids were inoculatedper os with spores of a species ofPleistophora isolated from Agrotis exclamationis, except that is was non-infective for the typehost A. segetum, probably insufficiently pathogenic for use in the biological control of noCTuids.
Evaluation of Rehabilitation Alternatives for Small Hydropower Plants
This paper describes methods for comparative evaluation of alternative rehabilitation measures for aging small-scale hydroelectric power plants located on storage reservoirs. The evaluation criteria
Studies of the pathogenicity of a cytoplasmic polyhedrosis virus isolated from Noctua pronuba (L.) (Lepid., Noctuidae)
TLDR
Third and fourth instar larvae of Noctua pronuba (L.) were inoculated per os with polyhedral inclusion bodies (PIB's) of a cytoplasmic polyhedrosis virus (CPV) isolated from N. pronuba, finding this isolate of CPV is of low pathogenicity and causes only a chronic infection it is unsuitable for use against N. pronounceuba in Britain where rapid control is required.
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