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Ralph W. Howard

Researcher at Agricultural Research Service

Publications -  71
Citations -  4137

Ralph W. Howard is an academic researcher from Agricultural Research Service. The author has contributed to research in topics: Fatty acid & Arachidonic acid. The author has an hindex of 34, co-authored 71 publications receiving 3930 citations. Previous affiliations of Ralph W. Howard include United States Department of Agriculture.

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Journal ArticleDOI

Ecological, behavioral, and biochemical aspects of insect hydrocarbons*

Ralph W. Howard, +1 more
- 01 Jan 2005 - 
TL;DR: This review covers selected literature from 1982 to the present on some of the ecological, behavioral, and biochemical aspects of hydrocarbon use by insects and other arthropods.
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Insect immune response to bacterial infection is mediated by eicosanoids

David W. Stanley-Samuelson, +5 more
- 01 Feb 1991 - 
TL;DR: The results strongly suggest that eicosanoids mediate transduction of bacterial infection signals into the complex of cellular and humoral responses that comprise invertebrate immunity.
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Diatomaceous earth increases the efficacy of Beauveria bassiana against Tribolium castaneum larvae and increases conidia attachment

Waseem Akbar, +3 more
- 01 Apr 2004 - 
TL;DR: The hypothesis that diatomaceous earth enhances the efficacy of B. bassiana against larval T. castaneum, at least in part by damaging the insect cuticle, thus increasing conidial attachment and making nutrients more available to conidia for their germination is supported.
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Cuticular hydrocarbons ofReticulitermes virginicus (Banks) and their role as potential species- and caste-recognition cues.

Ralph W. Howard, +5 more
- 01 Sep 1982 - 
TL;DR: A bioassay was developed to test the species-recognition hypothesis and the experimental results supporting the hypothesis suggest that cuticular hydrocarbons might serve as species- and caste- Recognition cues.
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Chemical mimicry as an integrating mechanism: cuticular hydrocarbons of a termitophile and its host.

Ralph W. Howard, +2 more
- 24 Oct 1980 - 
TL;DR: The staphylinid beetle Trichopsenius frosti Seevers has the same cuticular hydrocarbons as those of its host termite Reticulitermes flavipes (Kollar) and it biosynthesizes them.