Novel bacterial pathogen Acaricomes phytoseiuli causes severe disease symptoms and histopathological changes in the predatory mite Phytoseiulus persimilis (Acari, Phytoseiidae)

Schütte, Conny; Gols, Rieta; Kleespies, Regina; Poitevin, Olivier; Dicke, Marcel

doi:10.1016/j.jip.2008.03.006

Cited by 20 publications

(18 citation statements)

References 39 publications

(58 reference statements)

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“…Many species of commercially available phytoseiid mites are mass reared using astigmatid mites (Acari: Astigmata) as factitious prey 4,5 . Like many other arthropod species, predatory and prey mites are closely associated with symbiotic and pathogenic bacteria that may have variable yet critical impact on several fitness parameters of their arthropod hosts 6,7 . Diseases and/or reproductive disorders associated with endosymbiotic bacteria can have devastating effects on the mass-rearing of predatory mites 8 .…”

Section: Introductionmentioning

confidence: 99%

“…While some information on certain endosymbionts of N. cucumeris and T. putrescentiae 2,3 exists there is no information regarding the intrinsic microbiota of these species, or the effects of predatory-prey mite interactions on the ecology of these microbiota. Although mites are kept at high densities in mass rearing units it is still unclear whether both species share bacterial communities due to horizontal transfer via predation, contact or the feces 6 . The current study, to our knowledge, is the first direct comparison of bacterial microbiota from Phytoseiidae mites and their factitious prey mites.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of bacterial microbiota of the predatory mite Neoseiulus cucumeris (Acari: Phytoseiidae) and its factitious prey Tyrophagus putrescentiae (Acari: Acaridae)

Pekas¹,

Palevsky

Sumner

et al. 2017

Sci Rep

109

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Neoseiulus cucumeris is a predatory mite used for biological control of arthropod pests. Mass-reared predators are fed with factitious prey mites such as Tyrophagus putrescentiae. Although some information on certain endosymbionts of N. cucumeris and T. putrescentiae exists, it is unclear whether both species share bacterial communities. The bacterial communities in populations of predator and prey mites, as well as the occurence of potential acaropathogenic bacteria were analyzed. The comparisons were based on the following groups: (i) N. cucumeris mass-production; (ii) N. cucumeris laboratory population with disease symptoms; (iii) T. putrescentiae pure populations and; (iv) T. putrescentiae from rearing units of N. cucumeris. Only 15% of OTUs were present in all samples from predatory and prey mite populations (core OTUs): the intracellular symbionts Wolbachia, Cardinium, plus other Blattabacterium-like, Solitalea-like, and Bartonella-like symbionts. Environmental bacteria were more abundant in predatory mites, while symbiotic bacteria prevailed in prey mites. Relative numbers of certain bacterial taxa were significantly different between the microbiota of prey mites reared with and without N. cucumeris. No significant differences were found in the bacterial communities of healthy N. cucumeris compared to N. cucumeris showing disease symptoms. We did not identify any confirmed acaropathogenic bacteria among microbiota.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of bacterial microbiota of the predatory mite Neoseiulus cucumeris (Acari: Phytoseiidae) and its factitious prey Tyrophagus putrescentiae (Acari: Acaridae)

Pekas¹,

Palevsky

Sumner

et al. 2017

Sci Rep

109

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“…The NR-syndrome was clearly induced in those predators that had been exposed to the bacterial inoculum (=treatment predators), whereas predators exposed to water (=control predators) did not show the NR-syndrome. Moreover, A. phytoseiuli was never isolated from control predators whereas it could be re-isolated from 60% of the treatment predators and from feces of 41% of treatment predators (Schütte et al 2008b). Light and electron microscopic studies of predators exposed to A. phytoseiuli revealed striking bacterial accumulations in the lumen of the alimentary tract together with extreme degeneration of its epithelium.…”

Section: Lighthartmentioning

confidence: 97%

“…In addition, bacterial foci also occurred in the fat body. These phenomena were not observed in control predators that had been exposed to sterile water (Schütte et al 2008b). Thus A. phytoseiuli may infect the predatory mite P. persimilis and induce the occurrence of the NR-syndrome in adult female P. persimilis.…”

Section: Lighthartmentioning

confidence: 97%

“…Verified and potential pathogens have been reported in phytoseiid mites collected from the field (Furtado et al 1996), from those currently mass-produced for biological pest control (Beerling and van der Geest 1991a, b;Bjørnson and Keddie 2000;Gols et al 2007) and from laboratory populations (Hess and Hoy 1982;Becnel et al 2002;Schütte et al 2008b;Pukall et al 2006;Gols et al 2007). For the latter two cases it could not be determined whether the entities originated from field-collected natural enemies or arose in mass-rearing systems as a result of intense and continuous rearing under laboratory conditions.…”

Section: Introductionmentioning

confidence: 99%

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Verified and potential pathogens of predatory mites (Acari: Phytoseiidae)

Schütte

Dicke

2008

Exp Appl Acarol

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Several species of phytoseiid mites (Acari: Phytoseiidae), including species of the genera Amblyseius, Galendromus, Metaseiulus, Neoseiulus, Phytoseiulus and Typhlodromus, are currently reared for biological control of various crop pests and/or as model organisms for the study of predator-prey interactions. Pathogen-free phytoseiid mites are important to obtain high efficacy in biological pest control and to get reliable data in mite research, as pathogens may affect the performance of their host or alter their reproduction and behaviour. Potential and verified pathogens have been reported for phytoseiid mites during the past 25 years. The present review provides an overview, including potential pathogens with unknown host effects (17 reports), endosymbiotic Wolbachia (seven reports), other bacteria (including Cardinium and Spiroplasma) (four reports), cases of unidentified diseases (three reports) and cases of verified pathogens (six reports). From the latter group four reports refer to Microsporidia, one to a fungus and one to a bacterium. Only five entities have been studied in detail, including Wolbachia infecting seven predatory mite species, other endosymbiotic bacteria infecting Metaseiulus (Galendromus, Typhlodromus) occidentalis (Nesbitt), the bacterium Acaricomes phytoseiuli infecting Phytoseiulus persimilis AthiasHenriot, the microsporidium Microsporidium phytoseiuli infecting P. persimilis and the microsporidium Oligosproridium occidentalis infecting M. occidentalis. In four cases (Wolbachia, A. phytoseiuli, M. phytoseiuli and O. occidentalis) an infection may be connected with fitness costs of the host. Moreover, infection is not always readily visible as no obvious gross symptoms are present. Monitoring of these entities on a routine and continuous basis should therefore get more attention, especially in commercial mass-production. Special attention should be paid to field-collected mites before introduction into the laboratory or mass rearing, and to mites that are exchanged among rearing facilities. However, at present general pathogen monitoring is not yet practical as effects of many entities are unknown. More research effort is needed concerning verified and potential pathogens of commercially reared arthropods and those used as model organisms in research.

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Plant Semiochemicals – Perception and Behavioural Responses by Insects

Reinecke

Hilker

2014

Annual Plant Reviews

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Novel bacterial pathogen Acaricomes phytoseiuli causes severe disease symptoms and histopathological changes in the predatory mite Phytoseiulus persimilis (Acari, Phytoseiidae)

Cited by 20 publications

References 39 publications

Comparison of bacterial microbiota of the predatory mite Neoseiulus cucumeris (Acari: Phytoseiidae) and its factitious prey Tyrophagus putrescentiae (Acari: Acaridae)

Comparison of bacterial microbiota of the predatory mite Neoseiulus cucumeris (Acari: Phytoseiidae) and its factitious prey Tyrophagus putrescentiae (Acari: Acaridae)

Verified and potential pathogens of predatory mites (Acari: Phytoseiidae)

Plant Semiochemicals – Perception and Behavioural Responses by Insects

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