Journal ArticleDOI
Pest management of psocids in milled rice stores in the humid tropics
TLDR
Fumigation failure and low milling degree of the rice stock were confirmed as important factors encouraging rapid and substantial psocid population growth while fungal infection rates, routine spraying of store and bag stack and variations in ambient climatic conditions made no obvious contribution to observed fluctuations in Psocid numbers.Abstract:
Psocids (Liposcelis spp.) are often abundant in tropical storage systems where very large populations can develop relatively soon after fumigation treatments. In order to improve pest management strategies against these pest some factors governing the potential of psocid populations to increase under tropical conditions were investigated in a large‐scale milled rice store and in the laboratory. The factors studied included the success of pest control, rice milling degree, fungal growth and variations in ambient temperature and humidity. Fumigation failure and low milling degree of the rice stock were confirmed as important factors encouraging rapid and substantial psocid population growth while fungal infection rates, routine spraying of store and bag stack and variations in ambient climatic conditions made no obvious contribution to observed fluctuations in psocid numbers. Suggestions are made for improved pest management strategies that need to be tested under operational conditions.read more
Citations
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Journal ArticleDOI
The effect of the insecticide dichlorvos on esterase activity extracted from the psocids, Liposcelis bostrychophila and L. entomophila
TL;DR: The inhibition kinetics of dichlorvos on carboxylesterase and acetylcholinesterase (AChE) activity extracted from Liposcelis bostrychophila and L. entomophila showed significantly greater specific activity and higher affinity to the substrate 1-naphthyl acetate than for the other species.
Journal ArticleDOI
Biology and Management of Psocids Infesting Stored Products
TL;DR: This work investigates what is known about the biology, behavior, and population dynamics of major pest species to ascertain their strengths, and perhaps find weaknesses, as a basis for a rational pest management strategy.
Journal ArticleDOI
Development and Reproduction of the Psocid Liposcelis bostrychophila (Psocoptera: Liposcelididae) as a Function of Temperature
TL;DR: The population reared at 30°C had the highest intrinsic rate of increase (0.0946), net reproductive rate (59.59), the shortest population doubling time (7.3 d), and shorter mean generation time (43.2 d) compared with the populations rearing at 6 other constant temperatures.
Journal ArticleDOI
The mortality of three species of Psocoptera, Liposcelis bostrychophila Badonnel, Liposcelis decolor Pearman and Liposcelis paeta Pearman, at moderately elevated temperatures
S.J. Beckett,Richard M. Morton +1 more
TL;DR: The psocids were considerably more vulnerable to heat disinfestation at moderate temperatures than either Rhyzopertha dominica or Sitophilus oryzae and the heat tolerance of a range of species that might reasonably be expected to differ in heat tolerance was determined.
Journal ArticleDOI
Weight losses of wheat grains caused by psocid infestation (Liposcelis bostrychophyla: Liposcelididae: Psocoptera)
TL;DR: Weight losses of wheat grains caused by psocid infestation (Liposcelis bostrychophila: Liposcelididae: Psocoptera): weight losses were positively correlated with progeny production.
References
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Book
Fungi and food spoilage
John I. Pitt,Ailsa D. Hocking +1 more
TL;DR: The Ecology of Fungal Food Spoilage: Naming and Classifying Fungi and Methods for Isolation, Enumeration and Identification is presented.
Journal ArticleDOI
The effect of temperature and relative humidity on population growth of three Liposcelis species (Psocoptera: Liposcelidae) infesting stored products in tropical countries
D.P. Rees,A.J. Walker +1 more
TL;DR: The effect of a range of temperatures (15–42°C) and relative humidities (40–80%) on growth of populations of Liposcelis entomophilus (Enderlein), LipOScelis bostrychophilus Badonnel and Liposcareis paetus Pearman infesting a rice-based medium was investigated.
Journal ArticleDOI
Methyl bromide—Is there any future for this noteworthy fumigant?
TL;DR: Methyl bromide has been formally listed as an ozone-depleting substance by the Parties to the Montreal Protocol, with agreement from 1995 to limit future production as discussed by the authors, and it is the only remaining fumigant in worldwide use other than phosphine.
Journal ArticleDOI
The response of Liposcelis bostrychophila Badonnel and L. entomophila (Enderlein) (Psocoptera) to phosphine
S.H. Ho,R.G. Winks +1 more
TL;DR: Eggs and adults of Liposcelis bostrychophila were exposed to fixed phosphine concentrations for varying exposure periods, and the eggs were more tolerant of phosphine than the adults, but the former showed no change in tolerance with age.
Related Papers (5)
The response of Liposcelis bostrychophila Badonnel and L. entomophila (Enderlein) (Psocoptera) to phosphine
S.H. Ho,R.G. Winks +1 more