A review of diapause and tolerance to extreme temperatures in dermestids (Coleoptera)

Wilches, Diana; Laird, Robert A.; Floate, Kevin D.; Fields, Paul G.

doi:10.1016/j.jspr.2016.04.004

Cited by 57 publications

(36 citation statements)

References 93 publications

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“…In our study, groups were exposed on the treated arenas, and a better approach may be to expose individual larvae. The drawback in this approach is that dermestids tend to go into diapause at low densities (Wilches et al, 2016), which may also create issues in evaluating the data. This is also the first published study evaluating susceptibility of larval L. serricorne to residues from an aerosol application involving the current formulation of methoprene that is labeled in the USA.…”

Section: Discussionmentioning

confidence: 99%

Laboratory evaluation of particle size, food contamination, and residual efficacy of pyrethrin + methoprene aerosol

Arthur

Campbell

Donaldson

2017

Journal of Stored Products Research

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Efficacy of aerosol applications of pyrethrin+methoprene was assessed through emergence of morphologically-normal adults exposed as larvae and through a developmental index. Concrete arenas were treated with aerosol droplets (particles) averaging 2µm or 16µm, food material was placed on the arenas at 1-8 weeks post-treatment, and 3-4-week-old larvae of one of four stored product insect species placed on the arenas at the same time. No exposed Lasioderma serricorne (DeGeer) larvae reached the adult stage at either particle size, though they developed further when exposed residual deposits of the 2 µm aerosol particles compared to residual deposits of 16 µm particles. No exposed larvae of either Tribolium confusum Jacqueline duVal or Trogoderma variabile (Ballion) reached the adult stage when exposed to residues of the 16 µm particles, but most of the larvae exposed to the 2 µm residues completed development. Exposed Dermestes maculatus (DeGeer) larvae completed development to the adult stage after exposure to both particle sizes, indicating low susceptibility to methoprene residues. When food material in the arenas was also treated with the two particle sizes and bioassays conducted using only larvae of L. serricorne, T. confusum, and T. variable, results were similar to those described above. In a final experiment, only the 16 µm particle size aerosol was used to treat arenas with or without food, with arenas without food having it added one day after treatment. At 1-8 weeks post-treatment, the food was transferred to new untreated arenas and food was replaced in the arenas originally treated with aerosol. Bioassays were conducted using only larvae of T. confusum and T. variabile. The food material blocked deposition of the aerosol on the arenas or absorbed some of the residues, indicating transference of the methoprene residues from the treated surfaces onto the food.

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Section: Discussionmentioning

confidence: 99%

Laboratory evaluation of particle size, food contamination, and residual efficacy of pyrethrin + methoprene aerosol

Arthur

Campbell

Donaldson

2017

Journal of Stored Products Research

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“…This could be due to high persistence of these pesticides under the relatively low temperature environments which prevailed in Harare. The superior performance of Shumba Low levels of grain damage in Mbire can be attributed to the high temperatures which suppressed many insect pests, with the exception of T. castaneum (Fleurat-Lessard and Dupuis, 2010;Wilches et al, 2016). When temperatures go beyond the optimum range of most of the pest species capable of damaging whole grains, lower grain damage is likely to occur (Fleurat-Lessard and Dupuis, 2010).…”

Section: Grain Moisture Content and Storage Room Temperaturesmentioning

confidence: 99%

Blanket application rates for synthetic grain protectants across agro-climatic zones: Do they work? Evidence from field efficacy trials using sorghum grain

et al. 2018

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Many smallholder farmers in sub-Saharan Africa rely on synthetic pesticides for protecting stored-grain. Recommendations on use of these grain protectants are typically based on "blanket" application rates which are fixed rates that are not varied according to grain type, pest range or agro-climatic regions. There are numerous anecdotal reports of storage pesticide failure or reduced efficacy from farmers. Might rising global temperatures be a contributory factor? Smallholder farmers are responding by over-applying pesticides, increasing the application frequency or switching to non-recommended pesticides; leading to a pesticide treadmill. Trials to determine the efficacy and persistence of five commercially-available synthetic pesticides applied at manufacturer's recommended rates on stored sorghum grain under contrasting climatic conditions were conducted in Mbire (mean temperatures of 32-42 o C and 30-50 % rh) and Harare (18-32 o C; 42-75 % rh) districts in Zimbabwe. Grain samples were collected at 8-*Manuscript Click here to view linked References week intervals throughout a 10 month period in the 2014/15 and 2015/16 storage seasons. The samples were analyzed for insect grain damage, weight loss, total number of storage insects by species) and grain moisture content. Results showed significant differences in the performance of treatments (p < 0.001). Grain damage was consistently higher in Harare than in Mbire. Tribolium castaneum was the dominant pest in Mbire, while Sitotroga cerealella and Sitophilus oryzae were dominant in Harare. Tribolium castaneum populations were high in the Shumba Super dust ® (fenitrothion 1% + deltamethrin 0.13%) treatment in Mbire, while S. cerealella was dominant in Super guard ® (pirimiphos-methyl 1.6% + permethrin 0.4%) and Actellic Gold dust ® (pirimiphos-methyl 1.6% + thiamethoxam 0.36%) treated grain in Harare. Grain moisture content varied with ambient conditions, and was high in treatments with high insect pest levels. The results show that differences in climatic conditions influence insect pest species dynamics and response to pesticide treatments. Storage pesticides are not equally effective across different climatic conditions; thus more context-specific application recommendations are required.

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“…During overwintering, insects are exposed to fluctuating, freezing temperatures accompanied by adversities such as a risk of dehydration, lack of food and reduction in oxygen levels (Holmstrup et al, 2002). Among environmental factors, low temperature is a critical factor that affects the metabolic rate, distribution and ultimately the survival ability of insects (Wilches et al, 2016). As the metabolic rate of insects is temperature-dependent, low temperature causes indirect injuries such as persistent suppression of cellular metabolism, loss of ion homeostasis and accumulation of toxic metabolic end products (Dollo et al, 2010;Koštál et al, 2011; Teets and Denlinger, 2013;Sinclair, 2015).…”

Section: Introductionmentioning

confidence: 99%

TMT-Based Quantitative Proteomic Profiling of Overwintering Lissorhoptrus oryzophilus

et al. 2020

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Adaptations to low temperature play a critical role in restricting the geographical distribution of insects. Decreasing day lengths and temperatures trigger seasonal cold adaptations in insects. These adaptions include changes in expression at the miRNA, mRNA and protein levels. The rice water weevil (RWW), Lissorhoptrus oryzophilus, introduced from the Mississippi River, is a globally invasive pest of wetland rice that can survive at the northern border of China. To investigate the changes in expression at the protein level in overwintering female RWW adults, 6-plex tandem mass tags (TMTs) were used in overwintering and summer adults. By using a proteome database available for Curculionidae, 1077 proteins were quantified, 183 of which differed significantly between the overwintering and summer samples. To further understand these differentially expressed proteins (DEPs), bioinformatics analyses such as gene ontology (GO) enrichment analyses were performed. DEPs associated with the terms binding, structural molecule activity, catalytic activity, multicellular organismal process, extracellular region, chitin binding, metabolic process, intracellular part and organic cyclic compound binding were altered by selection during winter. The changes in the expression of these proteins suggest that the proteins are important for RWW survival in winter.

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A review of diapause and tolerance to extreme temperatures in dermestids (Coleoptera)

Cited by 57 publications

References 93 publications

Laboratory evaluation of particle size, food contamination, and residual efficacy of pyrethrin + methoprene aerosol

Laboratory evaluation of particle size, food contamination, and residual efficacy of pyrethrin + methoprene aerosol

Blanket application rates for synthetic grain protectants across agro-climatic zones: Do they work? Evidence from field efficacy trials using sorghum grain

TMT-Based Quantitative Proteomic Profiling of Overwintering Lissorhoptrus oryzophilus

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