Death by desiccation: Effects of hermetic storage on cowpea bruchids

Handle URI:
http://hdl.handle.net/10754/565966
Title:
Death by desiccation: Effects of hermetic storage on cowpea bruchids
Authors:
Murdock, Larry L.; Margam, Venu; Baoua, Ibrahim B.; Balfe, Susan; Shade, Richard E.
Abstract:
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.
KAUST Department:
Computational Bioscience Research Center (CBRC)
Publisher:
Elsevier BV
Journal:
Journal of Stored Products Research
Issue Date:
Apr-2012
DOI:
10.1016/j.jspr.2012.01.002
Type:
Article
ISSN:
0022474X
Appears in Collections:
Articles; Computational Bioscience Research Center (CBRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorMurdock, Larry L.en
dc.contributor.authorMargam, Venuen
dc.contributor.authorBaoua, Ibrahim B.en
dc.contributor.authorBalfe, Susanen
dc.contributor.authorShade, Richard E.en
dc.date.accessioned2015-08-12T08:57:16Zen
dc.date.available2015-08-12T08:57:16Zen
dc.date.issued2012-04en
dc.identifier.issn0022474Xen
dc.identifier.doi10.1016/j.jspr.2012.01.002en
dc.identifier.urihttp://hdl.handle.net/10754/565966en
dc.description.abstractWhen 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.en
dc.publisherElsevier BVen
dc.subjectCallosobruchus maculatusen
dc.subjectCowpea bruchiden
dc.subjectHermetic storageen
dc.subjectMode of actionen
dc.subjectPostharvesten
dc.subjectWater supplyen
dc.titleDeath by desiccation: Effects of hermetic storage on cowpea bruchidsen
dc.typeArticleen
dc.contributor.departmentComputational Bioscience Research Center (CBRC)en
dc.identifier.journalJournal of Stored Products Researchen
kaust.authorMargam, Venuen
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