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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Death by desiccation: Effects of hermetic storage on cowpea bruchids
Journal of Stored Products Research, Volume 49, Year 2012
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Description
When cowpea grain is stored in airtight containers, destructive populations of the cowpea bruchid (. Callosobruchus maculatus) don't develop even though the grain put into the store is already infested with sufficient . C. maculatus to destroy the entire store within a few months. The surprising effectiveness of hermetic storage for preserving grain against insect pests has long been linked with the depletion of oxygen in the hermetic container and with the parallel rise in carbon dioxide. With . C. maculatus, low oxygen (hypoxia) leads to cessation of larval feeding activity, whereas elevated levels of carbon dioxide (hypercarbia) have little or no effect on feeding. Cessation of feeding arrests the growth of the insects, which don't mature and don't reproduce. As a result, population growth ceases and damaging infestations don't develop. . C. maculatus eggs, larvae, and pupae subjected to hypoxia eventually die after exposures of various duration. The cause of death is desiccation resulting from an inadequate supply of water. We demonstrate that blocking the supply of oxygen interdicts the main supply of water for . C. maculatus. This leads to inactivity, cessation of population growth, desiccation and eventual death. © 2012 Elsevier Ltd.
Authors & Co-Authors
Murdock, Larry L.
United States, West Lafayette
Purdue University
Margam, Venu Madhav
United States, West Lafayette
Purdue University
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Baoua, Ibrahim Boukary
Niger
L'institut National de la Recherche Agronomique du Niger Inran
Balfe, Susan
United States, West Lafayette
Purdue University
United States, Urbana
University of Illinois Urbana-champaign
Shade, Richard E.
United States, West Lafayette
Purdue University
Statistics
Citations: 202
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1016/j.jspr.2012.01.002
ISSN:
0022474X
Research Areas
Environmental
Study Design
Cross Sectional Study