Intraguild predation between Amblyseius swirskii and two native Chinese predatory mite species and their development on intraguild prey

In this study, we examined biological control Thirps palmi Karny of a predatory mite Amblyseius (Typhlodromips) swirskii (AthiasHenriot), the anthocorid bug Orius sp. and combination of Amblyseius swirskii and Orius sp. The experiments in laboratory condition showed that combination of these two species have the ability to prey consumtion is higher than using only predator (Orius sp. or Amblyseius swirskii). The fecundity of Orius sp. in the absence of Amblyseius swirskii (the total number of eggs/ females = 45.5 ± 2.25 eggs, the oviposition period = 16.49 ± 0.5 days) were higher than in the presence of Amblyseius swirskii (the total number of eggs/ females = 35.6 ± 2.33 eggs, the oviposition period = 13.1 ± 0.63 days). Similar with Amblyseius swirskii, the fecundity of Amblyseius swirskii in the absence of Orius sp. (the total number of eggs/females = 35.57 ± 3.62 eggs, the oviposition period = 21.33 ± 0.7 days) were higher than in the presence of Amblyseius swirskii (the total number of eggs/ females = 24.1 ± 1.67 eggs, the oviposition period = 13 ± 1.43 days). In the greenhouse with area of 300m2, the experiments were conducted when used two-predator were average aduts (Orius sp. were 3.47 adult/ leaf, A. swirskii were 6.96 adult/ leaf) were aqual as release of only Orius sp. (average adult = 3.81 adult/ leaf) or only Amblyseius swirskii (average adult = 6.49 adult/ leaf). This study also provides further evidence that intraguild predation does not necessarily have negative effects on biological control.

Download Full-text

Phytoseiid predatory mites can disperse entomopathogenic fungi to prey patches

Scientific Reports ◽

10.1038/s41598-019-55499-8 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 3

Author(s):

Gongyu Lin ◽

Claude Guertin ◽

Sean-Anthony Di Paolo ◽

Silvia Todorova ◽

Jacques Brodeur

Keyword(s):

Frankliniella Occidentalis ◽

Predatory Mites ◽

Mite Species ◽

Predatory Mite ◽

Amblyseius Swirskii ◽

Infection Rates ◽

Neoseiulus Cucumeris ◽

Phytoseiid Mites ◽

First Instar ◽

Young Leaves

AbstractRecent studies have shown that predatory mites used as biocontrol agents can be loaded with entomopathogenic fungal conidia to increase infection rates in pest populations. Under laboratory conditions, we determined the capacity of two phytoseiid mites, Amblyseius swirskii and Neoseiulus cucumeris to deliver the entomopathogenic fungus Beauveria bassiana to their prey, Frankliniella occidentalis. Predatory mites were loaded with conidia and released on plants that had been previously infested with first instar prey clustered on a bean leaf. We examined each plant section to characterize the spatial distribution of each interacting organism. Our results showed that A. swirskii delivered high numbers of conidia to thrips infested leaves, thereby increasing the proportion of thrips that came into contact with the fungus. The effect was larger when thrips infestation occurred on young leaves than on old leaves. Neoseiulus cucumeris delivered less conidia to the thrips infested leaves. These patterns result from differences in foraging activity between predatory mite species. Amblyseius swirskii stayed longer on plants, especially within thrips colonies, and had a stronger suppressing effect on thrips than N. cucumeris. Our study suggests that loading certain predatory mite species with fungal conidia can increase their capacity to suppress thrips populations by combining predation and dispersing pathogens.

Download Full-text

Side effects of fungicides and insecticides on predatory mites, in laboratory conditions

Journal of Plant Protection Research ◽

10.2478/jppr-2014-0052 ◽

2014 ◽

Vol 54 (4) ◽

pp. 349-353 ◽

Cited By ~ 4

Author(s):

Żaneta Fiedler ◽

Danuta Sosnowska

Keyword(s):

Integrated Control ◽

Phytoseiulus Persimilis ◽

Predatory Mites ◽

Mite Species ◽

Predatory Mite ◽

Control Treatment ◽

Amblyseius Swirskii ◽

Lambda Cyhalothrin ◽

Low Toxicity ◽

Active Substances

Abstract Experiments were carried out on the toxicity of selected insecticides and fungicides to the predatory mites species: Amblyseius swirskii, A. andersoni, and Phytoseiulus persimilis. Among the tested active substances: abamectin, hexytiazox, and spinosad were safe to the predators. The mortality level of the tested predator was comparable to the control treatment, seven days after application. The percentage values of these predatory mites’ mortality caused by these insecticides, applied at one and a half of the recommended dose did not exceed a low toxicity – 25% (referring to International Organisation for Biological and Integrated Control (IOBC) classification on the toxicity to beneficial organisms). The results of the tests revealed that imidaclopryd, lambda-cyhalothrin, and fenpyroksymat were highly toxic to the predatory mites. It was found that toxicity of fungicides to the tested predatory mite species depended on the date of the chemical treatment and the date the predators were introduced. The fungicide Topsin M 500 SC – thiophanate-methyl, appeared to be selective to the species A. swirskii and it could be used in the Integrated Pest Management (IPM) programs for greenhouse grown crops.

Download Full-text

What habitat does spiny snout mite occupy in Tasmania

New Zealand Plant Protection ◽

10.30843/nzpp.2015.68.5854 ◽

2015 ◽

Vol 68 ◽

pp. 446-446

Author(s):

D.J. Wilson ◽

P.J. Gerard

Keyword(s):

New Zealand ◽

Sand Dune ◽

Biocontrol Agent ◽

Predatory Mites ◽

Mite Species ◽

Predatory Mite ◽

Habitat Specificity ◽

Nontarget Organisms ◽

Flea Control ◽

Potential Biocontrol Agent

Spiny snout mite (Neomolgus capillatus) is a potential biocontrol agent for clover flea (Sminthurus viridis) a white clover pest on dairy farms in warmer and wetter parts of New Zealand In the 1990s this mite was introduced from Brittany France into Tasmania for clover flea control Results during the release programme were highly promising and subsequent anecdotal farmer reports indicate widespread decreases in damage As N capillatus is a predatory mite and already known to attack nontarget organisms habitat specificity will determine whether it could be introduced into New Zealand without risk to native insects To assess this pastures on nine of the original Tasmanian release farms and adjacent nontarget habitats ranging from bush wetlands eucalypt stands to sand dune country were sampled in April 2014 Litter samples were collected heat extracted and mite species identified Neomolgus capillatus was found at effective densities in pastures that had good clover cover Where present it displaced Bdellodes spp mites that are ineffective against clover flea No N capillatus were found in the nontarget habitats all of which lacked clover and contained other predatory mites including Bdellodes spp Therefore the preference by N capillatus for lush pastures makes it an excellent prospect for introduction as a biocontrol agent into clover flea prone regions of New Zealand

Download Full-text

Investigation in the storage of the predatory mite Amblyseius swirskii under the condition of low temperature

Visnyk agrarnoi nauky ◽

10.31073/agrovisnyk202002-11 ◽

2020 ◽

Vol 98 (2) ◽

pp. 72-77

Author(s):

V. Krutiakova ◽

I. Limar'

Keyword(s):

Low Temperature ◽

Predatory Mite ◽

Amblyseius Swirskii

Download Full-text

Benefit-cost Trade-offs of Early Learning in Foraging Predatory Mites Amblyseius Swirskii

Scientific Reports ◽

10.1038/srep23571 ◽

2016 ◽

Vol 6 (1) ◽

Cited By ~ 13

Author(s):

Inga C. Christiansen ◽

Sandra Szin ◽

Peter Schausberger

Keyword(s):

Early Life ◽

Biocontrol Agent ◽

Early Learning ◽

Predatory Mites ◽

Predatory Mite ◽

Amblyseius Swirskii ◽

Trade Offs ◽

Fitness Benefits ◽

Benefit Cost ◽

Juvenile Development

Abstract Learning is changed behavior following experience, and ubiquitous in animals including plant-inhabiting predatory mites (Phytoseiidae). Learning has many benefits but also incurs costs, which are only poorly understood. Here, we addressed learning, especially its costs, in the generalist predatory mite Amblyseius swirskii, a biocontrol agent of several herbivores, which can also survive on pollen. The goals of our research were (1) to scrutinize if A. swirskii is able to learn during early life in foraging contexts and, if so, (2) to determine the costs of early learning. In the experiments, we used one difficult-to-grasp prey, i.e., thrips, and one easy-to-grasp prey, i.e., spider mites. Our experiments show that A. swirskii is able to learn during early life. Adult predators attacked prey experienced early in life (i.e., matching prey) more quickly than they attacked unknown (i.e., non-matching) prey. Furthermore, we observed both fitness benefits and operating (physiological) costs of early learning. Predators receiving the matching prey produced the most eggs, whereas predators receiving the non-matching prey produced the least. Thrips-experienced predators needed the longest for juvenile development. Our findings may be used to enhance A. swirskii’s efficacy in biological control, by priming young predators on a specific prey early in life.

Download Full-text

Control of major pests by released of Amblyseius swirskii Athias-Henriot and effect of furrow surface sulfur dust application on predatory mite density in green bell pepper greenhouses.

Kyushu Plant Protection Research ◽

10.4241/kyubyochu.58.66 ◽

2012 ◽

Vol 58 (0) ◽

pp. 66-72

Author(s):

Shin-ichiro Okazaki ◽

Katsunori Tamashima ◽

Kimihiro Amekawa ◽

Mitsutoshi Momoshita ◽

Masami Takagi

Keyword(s):

Predatory Mite ◽

Bell Pepper ◽

Amblyseius Swirskii ◽

Mite Density

Download Full-text

Mites in dried figs of Turkey: diversity, species composition and density

Systematic and Applied Acarology ◽

10.11158/saa.24.6.4 ◽

2019 ◽

Vol 24 (6) ◽

pp. 992-997 ◽

Cited By ~ 2

Author(s):

Hulya Dizlek ◽

Mehmet Karagoz ◽

Farid Faraji ◽

Ibrahim Cakmak

Keyword(s):

Species Composition ◽

Mite Species ◽

Predatory Mite ◽

Infestation Rate ◽

Pest Species ◽

Tyrophagus Putrescentiae ◽

Acarus Siro ◽

Blattisocius Tarsalis ◽

Cheyletus Eruditus ◽

Over Time

This study was conducted to determine mite species in dried figs in Aydin, Turkey between August 2014 and November 2016. A total of 141 dried fig samples were taken from producers’ storage, commercial storages and fig processing factories in Buharkent, Germencik, Incirliova, Kocarli, Kosk, Kuyucak, Merkez, Nazilli, Sultanhisar and Yenipazar districts. In addition, 24 dried fig samples were kept in storage for 8 months and the changes in mite species composition and their densities in stored figs were determined. As a result, 8 mite species belonging to 3 orders and 5 families were identified from the dried figs. Acarus siro L., Carpoglyphus lactis (L.), Glycyphagus destructor (Schrank), G. domesticus (De Geer) and Tyrophagus putrescentiae (Schrank) as pest species, and Blattisocius tarsalis (Berlese), B. mali (Oudemans) and Cheyletus eruditus (Schrank) as predatory mite species were found. Out of 141 samples, 133 were infested with mites and the infestation ratio was 94.3%. Tyrophagus putrescentiae was the most common pest species with an infestation rate of 72.3%, followed by C. lactis with 34.8%, A. siro, G. destructor and G. domesticus with 0.7% contamination, respectively. Carpoglyphus lactis was found to have the highest density with 10,488 individuals/kg in contaminated fig samples. Blattisocius tarsalis was the most common predatory mite species with an infestation rate of 77.3%. Blattisocius mali and C. eruditus were found in 9.2% and 4.3% of dried figs, respectively. This study showed that the dried fig samples kept in storage were always vulnerable to contamination with mites. Mite species composition and their densities also fluctuated over time.

Download Full-text