Preliminary evaluation of the control effect of two predatory mite species on Eotetranychus sexmaculatus in rubber trees in Hainan Province, China

2021 ◽  
Author(s):  
Huihua Hao ◽  
Peizheng Li ◽  
Tianwei Xu ◽  
Qiqi Wu ◽  
Fangping Zhang ◽  
...  
Keyword(s):  
Population Density ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Field Population ◽  
Control Efficiency ◽  
Low Field ◽  
Field Release ◽  
High Predation ◽  
High Control

In this study, we aimed to clarify the effect of predatory mites on controlling the rubber tree pest mite Eotetranychus sexmaculatus (Riley) and explored basic application of the biocontrol technology “using predatory mites to control pest mites” to rubber trees. We selected two commercial species with high predation capacity from five species of predatory mites for further field-release tests. The results showed that among the five predatory mite species, Phytoseiulus persimilis (Athias‐Henriot) and Neoseiulus cucumeris (Oudemans) showed the highest and lowest daily average predation amounts on E. sexmaculatus, respectively, and that the commercial predatory mites Amblyseius swirskii (Athias‐Henriot) and Neoseiulus barkeri (Hughes) were demonstrated relatively high predation capacities on E. sexmaculatus and represent the ideal species for field release. Additionally, we found that field release by a hanging release sachet was suitable for a low field-population density of pest mites, and that predatory mites could be released at a dose of one sachet per tree and/or every other row or every other tree according to the actual situation of the pest mites. If the field population of E. sexmaculatus is at the peak egg-laying period, the release of A. swirskii should be top priority, which will lead to high control efficiency within 2 to 3 weeks. In case of low field-population density of E. sexmaculatus or a rainy season, top priority should be given to the release of N. barkeri, which might lead to high control efficiency within 3 to 4 weeks. The results showed that the release of A. swirskii had a more fast-acting effect with a higher control efficiency than N. barkeri at the early stage of release, whereas N. barkeri exhibited a better release effect with greater persistence than A. swirskii at the late stage of release.

What habitat does spiny snout mite occupy in Tasmania

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

Impact of Predatory Mite Releases on the Abundance of Pecan Leaf Scorch Mite (Acari: Tetranychidae)

2007 ◽  
Vol 42 (4) ◽  
pp. 517-524 ◽  
Author(s):  
James D. Dutcher
Keyword(s):  
Population Density ◽  
Predatory Mites ◽  
Predatory Mite ◽  
Mite Infestation ◽  
Effective Management ◽  
High Population Density ◽  
Release Date ◽  
Leaf Scorch ◽  
Galendromus Occidentalis ◽  
Release Area

Release of the predatory mites, Galendromus occidentalis (Nesbitt) and Phytoseuilis persimilis Athias-Henriot, suppressed or controlled populations of pecan leaf scorch mite (Eotetranychus hicoriae McGregor [Acari:Tetranychidae]) in an 18-yr-old ‘Desirable’ pecan orchard. Predators controlled a low population (4.4 pecan leaf scorch mites and eggs per leaf in untreated trees) of pecan leaf scorch mites in the 2002 season at 28 days after the release date. In 2003, both species of predatory mites were released at 500 and 1000 mites per tree in the center tree of a 25-tree, square plot (0.41 ha). Untreated trees had 63, 240, and 38 pecan leaf scorch mites and eggs per leaf at 6, 10, and 24 d postrelease, respectively. Pecan leaf scorch mites were controlled at this high population density in the release area 24 d after the release. Release of the mites at 500 and 1000 G. occidentalis mites per tree reduced the pecan leaf scorch mite infestation by 67 and 91%, respectively. Release of 500 and 1000 P. persimilis mites per tree reduced the pecan leaf scorch mite infestation by 90 and 98%, respectively. Predatory mite releases appear to provide an effective management tactic for pecan leaf scorch mite for pecan producers in Georgia.

scholarly journals Evaluation of Miticides and Predatory Mites for Managing Twospotted Spider Mites on A Herba-Ceous Perennial Goutweed, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 345-346
Author(s):  
T. Abbey ◽  
L. Pundt
Keyword(s):  
Predatory Mites ◽  
Spider Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Untreated Check ◽  
Shipment Container ◽  
Twospotted Spider

Abstract A test was conducted in Cheshire, CT, to determine the efficacy of five miticides and two predatory mite species for control of TSSM. There was also an untreated check. Treatments were arranged in a RCBD with four replications. Plots consisted of 12 container-grown plants in a 1.7 ft2 plastic flat. The trial cultivar ‘Variegate’ was planted on 1 Apr. Miticides were applied to the foliage from the top and sides with a Solo backpack sprayer at 60 psi with 35.3 gpa. Predatory mites were placed into the treatment plots by gently brushing them off of the lip of the shipment container. All treatments were applied on 18 Jul. Five leaves were removed from each treatment plot on 17, 25 Jul and 1, 8 and 15 Aug to count the eggs and motile TSSM. Data were analyzed by ANOVA and LSD.

Predatory mites of the Phytoseiidae family in integrated and ecological pest management systems in orchards in Slovakia

Biologia ◽  
2009 ◽  
Vol 64 (5) ◽  
Author(s):  
Ján Praslička ◽  
Andrea Barteková ◽  
Janka Schlarmannová ◽  
Radovan Malina
Keyword(s):  
Pest Management ◽  
Management System ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Typhlodromus Pyri ◽  
Apple Orchards ◽  
Amblyseius Andersoni ◽  
Phytoseiulus Macropilis ◽  
The Family

AbstractDuring 2005–2007, 1,332 individuals of predatory mites were found in integrated and ecological orchards in Slovakia. Seven predatory mite species of the family Phytoseiidae, namely Phytoseius echinus, Phytoseiulus macropilis, Euseius finlandicus, Typhlodromus pyri, Paraseiulus triporus, Amblyseius andersoni and Neoseiulella tiliarum, were identified. Out of 1,332 individuals, 519 (39.0%) were found in the apple orchards and 813 (61.0%) in the pear orchards. Out of all predatory mite individuals, 460 (34.5%) were found in the integrated pest management system (IPM) and 872 (65.5%) in the ecological pest management system (EPM). In apple orchards, P. echinus was dominant and constituted 49.3% of the detected mites. In pear orchards, E. finlandicus was dominant and constituted 48.7% of the detected mites. Typhlodromus pyri was also abundant, especially in pear orchards. The other species were less abundant.

scholarly journals Predatory Mite, Neoseiulus californicus (McGregor) (Arachnida: Acari: Phytoseiidae)

EDIS ◽  
2019 ◽  
Vol 2005 (13) ◽  
Author(s):  
Elena M. Rhodes ◽  
Oscar E. Liburd
Keyword(s):  
Spider Mite ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Neoseiulus Californicus ◽  
Publication Date ◽  
Type Ii ◽  
Twospotted Spider Mite ◽  
The World ◽  
Tetranychus Urticae Koch

The predatory mite Neoseiulus californicus (McGregor) has characteristics of both type II specialist predatory mites and type III generalist predatory mites. N. californicus prefers Tetranychid mites as food, but will also consume other mite species, small insects, such as thrips, and even pollen when the primary prey is unavailable. N. californicus is often used to control the twospotted spider mite, Tetranychus urticae Koch, and other phytophagous mites on various crops in temperate and subtropical regions around the world.  This document is EENY-359, one of a series of the Entomology and Nematology Department, UF/IFAS Extension. Original publication date November 2005. EENY-359/IN639: Predatory Mite, Neoseiulus californicus (McGregor) (Arachnida: Acari: Phytoseiidae) (ufl.edu)

scholarly journals Assays to determine the predatory ability of Pergamasus against clover flea

2005 ◽  
Vol 58 ◽  
pp. 131-134 ◽  
Author(s):  
T.M. Eden ◽  
D.J. Wilson ◽  
D.L. Hackell
Keyword(s):  
New Zealand ◽  
White Clover ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Poor Survival ◽  
The North ◽  
Significant Difference ◽  
Economic Pest ◽  
Significant Mortality

Clover flea (Sminthurus viridis) is found throughout New Zealand and is a major economic pest of white clover (Trifolium repens) in localised areas of the North Island Predatory mites are important biocontrol agents of clover flea in Australia but little is known of the efficacy of the predatory mite species present in New Zealand A major challenge to assessing mite efficacy has been poor survival of clover flea in laboratory assays It was found that adult clover flea survival was higher when they were contained with soil whereas soil was not essential for the survival of younger nymphs The predatory ability of Pergamasus is still unclear as there was significant mortality in one experiment containing the mites but no significant difference in mortality in the assay that followed

scholarly journals Dispersal of entomopathogenic fungi, Metarhizium anisopliae and its synergistic with predatory mite, Phytoseiulus macropilis for controlling Tetranychus urticae

2021 ◽  
Author(s):  
Dalia A. Waked ◽  
Mohamed Elewea ◽  
Abdel Aziz ElNasharty Basha ◽  
Mohamed Hendawy ◽  
Galal Shabaan Saleh
Keyword(s):  
Tetranychus Urticae ◽  
Entomopathogenic Fungi ◽  
Metarhizium Anisopliae ◽  
Entomopathogenic Fungus ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Infection Rates ◽  
Phytoseiulus Macropilis ◽  
Predator Mite

Abstract The entomopathogenic fungus “Metarhizium anisopliaeˮ and predatory mite “Phytoseiulus macropilisˮ are effective biological controlling agents of Tetranychus urticae. Recent studies have shown that predatory mites, used as biocontrol agents can be loaded with entomopathogenic fungal conidia to increase infection rates in pest populations. It was necessary to study the effect of M. anisopliae against P. macropilis before executing the experiment. The results showed that the predator mite was more effected by 1×109 conidia/ml of M. anisopliae, while the predator had low effect with 1×106 conidia/ml of M. anisopliae. It was found that the predator had poor effect at indirect spray. Results showed that dispersal of M. anisopliae loaded on P. macropilis delivered high numbers of conidia to T. urticae infested leaves, thereby increased the proportion of T. urticae that came into contact with the fungus.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 when releasing the loading predatory mite with M. anisopliae for controlling T. urticae on cucumber crop under greenhouse conditions

scholarly journals Compatibility of Three Miticides with the Predatory Mites Neoseiulus californicus McGregor and Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae)

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 707-710 ◽  
Author(s):  
Raymond A. Cloyd ◽  
Cindy L. Galle ◽  
Stephen R. Keith
Keyword(s):  
Spider Mite ◽  
Production Systems ◽  
Phytoseiulus Persimilis ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Neoseiulus Californicus ◽  
Twospotted Spider Mite ◽  
Greenhouse Production ◽  
Twospotted Spider

In this study, we report on the compatibility of two commercially available predatory mites, Neoseiulus californicus and Phytoseiulus persimilis, with three miticides used in greenhouse production systems to control the twospotted spider mite, Tetranychus urticae. We determined the lethal effects of the miticides chlorfenapyr, spiromesifen, and bifenazate to both predatory mite species 24 hours after exposure to spray applications in petri dishes. Two rates of chlorfenapyr (0.40 and 0.81 mL/2-L) and spiromesifen (0.15 and 0.31 mL·L–1), and one rate of bifenazate (0.62 mL·L–1) were used. All rates were based on the manufacturer label recommendations for twospotted spider mite. Both rates of chlorfenapyr and spiromesifen, and the single rate of bifenazate were not harmful to N. californicus with percent live mite values ≥85% for chlorfenapyr and ≥95% for spiromesifen, and 93% for bifenazate. However, these same miticides were substantially toxic to P. persimilis with percent live mite values of ≤63% for all the miticides tested. Based on the results of this study, the miticides chlorfenapyr, spiromesifen, and bifenazate are compatible with N. californicus whereas these miticides are toxic to P. persimilis indicating a difference in susceptibility based on predatory mite species.

SEASONAL INCIDENCE OF PREDATORY MITE SPECIES, AMBLYSEIUS INDICUS AND AMBLYSEIUS TERTANYCHIVORUS ON OKRA AND BRINJAL CROPS

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
MANOJ KUMAR TRIPATHI ◽  
D.K. SRIVASTAVA
Keyword(s):  
Population Dynamics ◽  
Field Condition ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Vegetable Crops ◽  
Seasonal Incidence

A study was conducted to assess the population dynamics of two predatory mite Amblyseius indicus and Amblyseius tertanychivorus under field condition on two summer vegetable crops, viz . brinjal and okra. Maximum population of Amblyseius indicus and A. tetranychivorus mites were recorded in crops brinjal (12.40), okra (09.60) and crop brinjal (09.20), okra (11.10), respectively. The population of predatory mites, recorded in the summer months in all crops varied from 2.00 to 8.00. Minimum incidence of predatory mites A. indicus was recorded in the month of March 1st fortnight in both crops and both mites i.e. brinjal (0.20) and okra (1.20). Similar trend was observed to A. tetranychivorus in crop brinjal (0.90) and okra (1.40), respectively.

scholarly journals Phytoseiid predatory mites can disperse entomopathogenic fungi to prey patches

2019 ◽  
Vol 9 (1) ◽  
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.

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