Functional responses of predatory mites, Cheyletus eruditus (Schrank) and Cheyletus malaccensis Oudemans (Trombidiformes: Cheyletidae) to Liposcelis decolor (Pearman) (Psocodea: Liposcelididae)

Danso, J.K.; Opit, George P.; Goad, Carla L.; Noden, Bruce H.

doi:10.1016/j.jspr.2023.102141

Cited by 3 publications

(6 citation statements)

References 37 publications

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“…Rearing methods for C. eruditus and C. malaccensis were as described in [ 6 , 23 ]. These methods are modified from a mass rearing protocol for C. eruditus as described by [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

“…These methods are modified from a mass rearing protocol for C. eruditus as described by [ 24 ]. Only adult female (♀) predatory mites were used for this study and were selected based on what is described in [ 6 , 21 , 23 , 25 ].…”

Section: Methodsmentioning

confidence: 99%

“…Experimental arenas consisted of two 6.0 cm diameter Petri dishes (forming a total cylindrical surface area of 113.04 cm 2 ; the total migration area of the individual predator in a closed cylinder) (60 × 15 mm, Style Polystyrene, Becton Dickinson and Company, Franklin Lakes, NJ, USA). Other aspects of the arenas were as described in [ 6 , 23 ]. The total migration area of individual prey was 47.12 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

“…Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) and Cheyletus malaccensis Oudemans are the most dominant and widely distributed cheyletid species in post-harvest agricultural systems in temperate and tropical regions [ 1 , 2 , 3 ]. Both predatory mites are natural enemies of multiple arthropods and prey on mite and non-mite pests of stored products [ 4 , 5 , 6 ], including psocids (Psocodea: Liposcelididae) [ 7 ]. Predator–prey interactions are linked through trophic relationships, and individual population dynamics are a function of multiple interactions among many biotic and abiotic variables [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…For example, susceptible laboratory strains of L. decolor can tolerate higher concentrations of phosphine up to 249.76 ppm [ 22 ]. Previous data [ 6 , 23 ] on the foraging behaviors of C. eruditus and C. malaccensis showed that these cheyletids had the potential to suppress L. decolor population under the same temperature (24 ± 1 °C) and RH (85 ± 5%) conditions. Given that the general performance of an effective biocontrol agent is a function of multiple ecological interactions among many biotic and abiotic variables, the evaluation of predator–prey interaction based on other variables such as predatory-to-prey ratio and thermo-hygrometric factors is necessary to investigate.…”

Section: Introductionmentioning

confidence: 99%

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Ecological Interactions of Predatory Mites, Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) and Cheyletus malaccensis Oudemans, and Prey, Liposcelis decolor (Pearman) (Psocodea: Liposcelididae), under Different Thermo-Hygrometric Regimes

Danso,

Opit,

Giles

et al. 2023

Insects

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Predator–prey interactions are linked through trophic relationships, and individual population dynamics are a function of multiple interactions among many ecological factors. The present study considered the efficacy of the predatory mites Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) and Cheyletus malaccensis Oudemans to manage Liposcelis decolor (Pearman) (Psocodea: Liposcelididae). Prey population suppression and progeny replacement efficiency of the predators were assessed under different predator–prey ratios (0:20, 1:20, 2:20, 4:20, and 10:20), temperatures (20, 24, 28, and 32 °C), and relative humidities (RH) (63, 75, and 85%) over 40 days under laboratory conditions of 0:24 (L:D) photoperiod. Suppression of L. decolor population when C. eruditus-related predator-to-prey ratios of 1:20, 2:20, 4:20, and 10:20 were used was ~61.7, 79.7, 85.1, and 87.5%, respectively, relative to the Control ratio (0:20). In the case of C. malaccensis, suppression of 70, 82.1, 92.9, and 96.5%, respectively, was achieved. Although the low 63% RH limited efficacy of these cheyletid mites, both predatory mites caused pest population suppression of ~67.1–97.2% and increased their progeny by ~96.7–844.4% fold for the predator–prey ratios of 1:20, 2:20, 4:20, and 10:20, temperatures of 20, 24, 28, and 32 °C, and RH levels of 63, 75, and 85%. The levels of psocid population suppression achieved indicate the potential of both predatory mites for psocid management.

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“…Rearing methods for C. eruditus and C. malaccensis were as described in [ 6 , 23 ]. These methods are modified from a mass rearing protocol for C. eruditus as described by [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ecological Interactions of Predatory Mites, Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) and Cheyletus malaccensis Oudemans, and Prey, Liposcelis decolor (Pearman) (Psocodea: Liposcelididae), under Different Thermo-Hygrometric Regimes

Danso,

Opit,

Giles

et al. 2023

Insects

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Numerical responses of the predatory mites,Cheyletus eruditus(Trombidiformes: Cheyletidae) andCheyletus malaccensis, toLiposcelis decolor(Psocodea: Liposcelididae)

Danso

Opit

Noden

2023

Journal of Economic Entomology

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Predatory mites display diverse ecological mechanisms to suppress pest population density below certain thresholds known to cause economic loss. The current study explored the numerical responses of the predatory mites, Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) and Cheyletus malaccensis Oudemans, to Liposcelis decolor (Pearman) (Psocodea: Liposcelididae). The numerical responses of these 2 cheyletid mites to nymphs, adult males, and adult females of L. decolor were determined under laboratory conditions at 24 ± 1 °C, 85 ± 5 RH, and 0:24 (L:D) photoperiod. Oviposition rate, oviposition efficiency, and efficiency of conversion of ingested (ECI) food resources were the key numerical response parameters assessed. The present study revealed a general trend of a strong negative and positive correlation between oviposition rates and increase in prey densities (number of prey per 16.98 cm2) for C. eruditus and C. malaccensis, respectively. The oviposition efficiency was mostly similar for both predatory mites and was inversely related to prey density. Generally, ECI (%) decreased considerably with increasing prey density across different prey types for both predators, however, C. malaccensis was more efficient than C. eruditus in utilizing prey biomass. Given the relatively weak numerical responses, we recommended further assessment of these predatory mites before recommending their use for managing stored-product insect pests in the United States.

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Maternal Care Behavior and Its Consequences in Competition

Li,

Liu

2024

Insects

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Parental care behavior has evolved as a life history strategy to improve reproductive success, particularly in organisms facing challenging environments. However, the variation in maternal care, such as egg-guarding behavior in response to the social environment and the associated ecological consequence of competition, remains largely unknown. This study addresses a gap in current knowledge by examining the plasticity of maternal care behavior in the predatory mite C. eruditus and its impact on offspring survival and intra- and interspecific competition. Our results demonstrated that the reproductive females frequently exhibit egg-guarding behaviors, with enhanced maternal care efforts when the interspecific competitor is present. Egg masses are significantly more vulnerable to predation in the absence of maternal care. Guarding females increased egg survival rates and adversely influenced the survival of both con- and heterospecific competitors, with higher mortality rates being detected. Our findings highlight the ecological significance of maternal care behaviors and suggest that releasing C. eruditus and Neoseiulus cucumeris (Oudemans) together is not recommended for pest management in storage products.

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Functional responses of predatory mites, Cheyletus eruditus (Schrank) and Cheyletus malaccensis Oudemans (Trombidiformes: Cheyletidae) to Liposcelis decolor (Pearman) (Psocodea: Liposcelididae)

Cited by 3 publications

References 37 publications

Ecological Interactions of Predatory Mites, Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) and Cheyletus malaccensis Oudemans, and Prey, Liposcelis decolor (Pearman) (Psocodea: Liposcelididae), under Different Thermo-Hygrometric Regimes

Ecological Interactions of Predatory Mites, Cheyletus eruditus (Schrank) (Trombidiformes: Cheyletidae) and Cheyletus malaccensis Oudemans, and Prey, Liposcelis decolor (Pearman) (Psocodea: Liposcelididae), under Different Thermo-Hygrometric Regimes

Numerical responses of the predatory mites,Cheyletus eruditus(Trombidiformes: Cheyletidae) andCheyletus malaccensis, toLiposcelis decolor(Psocodea: Liposcelididae)

Maternal Care Behavior and Its Consequences in Competition

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