Cumulative oxygen consumption during development of two postharvest insect pests: Callosobruchus maculatus Fabricius and Plodia interpunctella Hübner

Insect pests such as Callosobruchus maculatus Fabricius and Plodia interpunctella Hübner cause substantial losses to grain during postharvest storage. In the last few years, hermetic storage technologies have been successfully used by smallholder farmers in Africa and Asia to protect their harvested grain against insect pests. Hermetic technologies owe much of their effectiveness to restricting oxygen availability to insects confined in the containers. There is a need to better understand the biology of specific storage insect pests and their responses to hypoxia. We employed a novel and non-invasive analytical technology, the OxySense 5250i, to measure oxygen levels in closed containers, and evaluated its effectiveness in measuring the total oxygen consumption of two insect pests during their development: C. maculatus and P. interpunctella. The total amount of oxygen consumed by C. maculatus during its larval development period determined with the OxySense apparatus was not different from that previously recorded using another instrument, the Mocon Pac Check 325 gas analyzer. Using the OxySense 5250i, we found that P. interpunctella consumes nearly three times as much oxygen per insect over its larval-to-adult developmental period compared to C. maculatus. Information on the lifetime oxygen consumption of insects provides relevant information to the effectiveness and ability of hermetic technologies to protect stored products against insect pests.

[1]  Thomas J. Brumm,et al.  Hermetic storage systems for maize stored on subsistence farms , 2013 .

[2]  D. Calvin,et al.  Indian meal moth in stored grain. , 1990 .

[3]  S. Bailey.  Air-tight storage of grain; its effect on insect pests—IV Rhyzopertha dominica (F.) and some other Coleoptera that infest stored grain , 1965 .

[4]  L. Murdock,et al.  Safe storage of maize in alternative hermetic containers , 2017 .

[5]  V. Margam,et al.  Death by desiccation: Effects of hermetic storage on cowpea bruchids , 2012 .

[6]  J. Santos,et al.  Damage to germination of seed corn caused by maize weevil (Sitophilus zeamais)and Angoumois grain moth (Sitotroga cerealella). , 1990 .

[7]  Mohamed N. Sallam,et al.  INSECT DAMAGE : Damage on Post-harvest , 2013 .

[8]  G. L. Miller,et al.  Growth and Development of the Indian Meal Moth, Plodia interpunctella (Lepidoptera: Phycitidae), Under Laboratory Mass-Rearing Conditions , 1972 .

[9]  J. Santos,et al.  Efeito da infestação pelo gorgulho (Sitophilus zeamais) e traça (Sitotroga cerealella) sobre a germinação de sementes de milho. , 1990 .

[10]  L. Birch.  The Oxygen Consumption of the Small Strain of Calandra Oryzae L. and Rhizopertha Dominica Fab. as Affected by Temperature and Humidity , 1947 .

[11]  Effects of Hermetic Storage on Adult Sitophilus oryzae L. (Coleoptera: Curculionidae) Acoustic Activity Patterns and Mortality , 2017, Journal of Economic Entomology.

[12]  C. Woloshuk,et al.  Impact of opening hermetic storage bags on grain quality, fungal growth and aflatoxin accumulation , 2016, Journal of stored products research.

[13]  H. D. Bhasine.  Air-tight Storage of Grain. , 1924 .

[14]  Shlomo Navarro,et al.  Respiration of Tribolium castaneum (Herbst) at reduced oxygen concentrations , 2002 .

[15]  Robert H. Smith,et al.  Host suitability, respiration rate and the outcome of larval competition in strains of the cowpea weevil, Callosobruchus maculatus , 2003 .

[16]  Joseph M. Awika,et al.  Advances in cereal science : implications to food processing and health promotion , 2011 .

[17]  L. Murdock,et al.  PICS bags protect wheat grain, Triticum aestivum (L.), against rice weevil, Sitophilus oryzae (L.) (Coleoptera: Curculionidae) , 2015 .

[18]  L. Murdock,et al.  Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure , 2016, Insects.