pirate bug behavior -mites - thrips

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henry kuska
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pirate bug behavior -mites - thrips

Post: # 70635Post henry kuska
Fri Nov 15, 2019 11:48 am

"The fower thrips Frankliniella insularis (Franklin) (Thysanoptera: Thripidae) and the two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) are generalist herbivores that cause signifcant damage to rose crops in Brazil (Carvalho et al. 2013). The minute pirate bug Orius insidiosus (Say) (Hemiptera: Anthocoridae) is an efcient natural enemy for controlling thrips on ornamental plants (Bueno et al. 2009; Silveira et al. 2004; Carvalho et al. 2006), but its potential for suppressing spider mite populations is unclear (Xu et al. 2006). Here, we examined the efects of multiple herbivory by
F. insularis and T. urticae in rose plants on the attractiveness of HIPVs to O. insidiosus. Because we did not fnd
any report about their co-occurrence in rose plants, we frst evaluated whether infestation by one of herbivores
facilitates the colonization of the second species, indicating that multiple infestations by T. urticae and F. insularis
likely occur. We then investigated the following questions: (i) Is O. insidiosus attracted by HIPVs emitted by rose
plants infested with T. urticae or F. insularis? (ii) Does O. insidiosus prefer HIPVs emitted by rose plants infested with T. urticae or F. insularis? (iii) Does O. insidiosus prefer rose plants infested with one or two herbivore species? (iv) Does the attraction of O. insidiosus for HIPVs refects its prey preference for T. urticae or F. insularis? Since the two herbivores induce the jasmonic acid pathway (Li et al. 2002; Abe et al. 2009), we expected that multiple herbivory would increase the predator attractiveness to the rose plant. We conducted a series of behavioral assays assessing the minute pirate bug’s preference and development for rose-plant volatiles and prey. We also chemically characterized volatile profle of rose plants upon single and multiple herbivory to discuss results on the minute pirate bug’s olfactory preference."

See:

https://link.springer.com/article/10.10 ... 19-09729-5

roseseek
Posts: 5003
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15
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Re: pirate bug behavior -mites - thrips

Post: # 70638Post roseseek
Fri Nov 15, 2019 8:56 pm

This was posted on Garden Web in a post about Chilli Thrips. The gist of the study is, these varieties of ornamental peppers possess the necessary structures on their foliage to provide "housing" for the listed predatory mites. These mites are commercially available. They are omnivorous, eating pollen, white flies, CHILLI THRIPS, AND SPIDER MITES! This means it MIGHT be possible to grow these ornamental peppers around your garden as "banker plants" to house predatory mites which then would help control spider mites, chilli thrips, white flies and other listed insects! https://mrec.ifas.ufl.edu/lso/BANKER%20 ... nzF-jfAS7Q
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

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