Interactions of two natural enemies ofTetranychus urticae, the fungal entomopathogenBeauveria bassianaand the predatory mite,Phytoseiulus persimilis

Seiedy, Marjan; Saboori, Alireza; Allahyari, Hossein

doi:10.1080/09583157.2012.695010

Cited by 34 publications

(26 citation statements)

References 25 publications

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“…Offspring of arthropods infected with B. bassiana may exhibit reduced survival and fecundity, moulting problems and malformations (Torrado-Leon et al 2006). Egg hatching success can be significantly reduced for gravid B. bassiana-treated N. californicus (Castagnoli et al 2005) and P. persimilis (Pozzebon and Duso 2010), but, contrary to these findings, treatment of P. persimilis with B. bassiana has also been reported to have no effect on egg hatching success (Duso et al 2008;Seiedy et al 2012). The results of the current study are consistent with the latter: no significant effect was observed on egg viability, juvenile survival or the sex ratio of offspring from B. bassiana-treated A. swirskii.…”

Section: Discussioncontrasting

confidence: 43%

“…Sublethal effects of an entomopathogen on nontarget predators can be manifested by a change in fecundity, predation rates, longevity and fitness of subsequent offspring (Duso et al 2008;Seiedy et al 2012;Shipp et al 2012). There was an overall trend of reduced fecundity in B. bassiana-treated A. swirskii in the present study, except for adult mites exposed to dry residue only, indicating an effect on the fitness of the mites.…”

Section: Discussionmentioning

confidence: 99%

“…Interactions between arthropods and entomopathogens are however complex (Agboton et al 2013;Aqueel and Leather 2013) and the impact of sublethal effects is poorly understood (Pozzebon and Duso 2010;Seiedy et al 2012;Shipp et al 2012). The aim of this study was to establish the potential of the commercially available B. bassiana strain GHA to infect and kill A. swirskii under optimal conditions for the pathogen and to investigate the effects on specific population parameters when subjected to topical application of B. bassiana conidial suspensions and/ or dry residues on leaf discs.…”

Section: Introductionmentioning

confidence: 99%

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Compatibility of Amblyseius swirskii with Beauveria bassiana: two potentially complimentary biocontrol agents

et al. 2016

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The two biocontrol agents Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) and Beauveria bassiana (Balsamo) Vuillemin (Hypocreales: Cordycipitaceae) have the potential to complement one another as part of an integrated pest management programme. While both can suppress whitefly and thrips infestations in protected crops, A. swirskii is primarily used preventatively whereas B. bassiana can be used as a curative treatment at higher pest levels. With this concomitant use in mind, the research presented here aimed to identify potential negative effects of the commercial B. bassiana strain GHA on A. swirskii in a laboratory study. Adult A. swirskii were found to be susceptible to B. bassiana infection with slight to moderate virulence (20.74 ± 3.89 to 48.33 % ± 3.07) depending on the type of exposure and with a reduction in fecundity over time. There was however no negative effect on juvenile survival neither on dry residue nor on the offspring of infected mites. Thus, these two biocontrol agents do have the potential to be complementary. Further trials in the field are still required before a final conclusion can be reached.

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Section: Discussioncontrasting

confidence: 43%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compatibility of Amblyseius swirskii with Beauveria bassiana: two potentially complimentary biocontrol agents

et al. 2016

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“…Recognition and response to such dangers is an important trait for the survival of any species (Mburu et al, 2009). Most studies on interactions between arthropod natural enemies and entomopathogenic fungi have involved parasitoids, while intraguild interactions involving entomopathogenic fungi and predators have not been extensively investigated (e.g., Rosenheim et al, 1995;Roy and Pell, 2000;Jaronski et al, 2003, Seiedy et al, 2012a, 2012b. Entomopathogenic fungi have negative effects on natural enemies after direct exposure (Roy et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Detection and avoidance of pathogens are important for predator survival, longevity, and ultimately fitness (Simelane et al, 2008;Seiedy et al, 2012a).…”

Section: Introductionmentioning

confidence: 99%

Orientation of Hippodamia variegata (Coleoptera: Coccinellidae) to healthy andBeauveria bassiana-infected Aphis fabae (Hemiptera: Aphididae) in an olfactometer system

Seiedy¹,

Heydari²,

Tork³

2015

Turk J Zool

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Determination of attractive and avoidance behavior of Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae) is very important in the concomitant use of Beauveria bassiana for control of Aphis fabae (Hemiptera: Aphididae). We investigated the olfactory response of the predatory insect H. variegata when receiving odors pertaining to Aphis fabae infected by B. bassiana EUT116 at 0-, 24-, 48-, and 72-h intervals in a Y-tube olfactometer set-up. Behavioral assays were conducted to assess the ability of adult H. variegata to avoid A. fabae infected with B. bassiana conidia on plants. In these experiments, H. variegata exhibited significant attraction towards the control when the predator alternative option was B. bassiana with 24-h intervals (P = 0.04) and 48-and 72-h intervals (P < 0.01 in both cases). We suggest that under laboratory conditions H. variegata could detect and avoid B. bassiana conidia; thus, B. bassiana would be a negligible threat to this predator.

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Inter‐ and intraspecific variation of spider mite susceptibility to fungal infections: Implications for the long‐term success of biological control

Zélé

Altıntaş

Santos

et al. 2020

Ecology and Evolution

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Spider mites are severe pests of several annual and perennial crops worldwide, often causing important economic damages. As rapid evolution of pesticide resistance in this group hampers the efficiency of chemical control, alternative control strategies, such as the use of entomopathogenic fungi, are being developed. However, while several studies have focused on the evaluation of the control potential of different fungal species and/or isolates as well as their compatibility with other control methods (e.g., predators or chemical pesticides), knowledge on the extent of inter‐ and intraspecific variation in spider mite susceptibility to fungal infection is as yet incipient. Here, we measured the mortality induced by two generalist fungi, Beauveria bassiana and Metarhizium brunneum, in 12 spider mite populations belonging to different Tetranychus species: T. evansi, T. ludeni, and T. urticae (green and red form), within a full factorial experiment. We found that spider mite species differed in their susceptibility to infection by both fungal species. Moreover, we also found important intraspecific variation for this trait. These results draw caution on the development of single strains as biocontrol agents. Indeed, the high level of intraspecific variation suggests that (a) the one‐size‐fits‐all strategy may fail to control spider mite populations and (b) hosts resistance to infection may evolve at a rapid pace. Finally, we propose future directions to better understand this system and improve the long‐term success of spider mite control strategies based on entomopathogenic fungi.

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Interactions of two natural enemies ofTetranychus urticae, the fungal entomopathogenBeauveria bassianaand the predatory mite,Phytoseiulus persimilis

Cited by 34 publications

References 25 publications

Compatibility of Amblyseius swirskii with Beauveria bassiana: two potentially complimentary biocontrol agents

Compatibility of Amblyseius swirskii with Beauveria bassiana: two potentially complimentary biocontrol agents

Orientation of Hippodamia variegata (Coleoptera: Coccinellidae) to healthy andBeauveria bassiana-infected Aphis fabae (Hemiptera: Aphididae) in an olfactometer system

Inter‐ and intraspecific variation of spider mite susceptibility to fungal infections: Implications for the long‐term success of biological control

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