Epidemic Development and Virulence in 1995–1998 of Puccinia coronata, a Potential Biocontrol Agent of Wild Oats on San Clemente Island

2000 ◽  
Vol 17 (3) ◽  
pp. 250-257 ◽  
Author(s):  
Mareike R Johnston ◽  
Laura D Carsten ◽  
Lisa Douglas ◽  
David C Sands
Keyword(s):  
Biocontrol Agent ◽  
Puccinia Coronata ◽  
Wild Oats ◽  
Potential Biocontrol Agent ◽  
Epidemic Development ◽  
San Clemente Island

A Field Trial of Crown Rust (Puccinia coronata f. sp. avenae) as a Biocontrol Agent of Wild Oats on San Clemente Island

2000 ◽  
Vol 19 (2) ◽  
pp. 175-181 ◽  
Author(s):  
Laura D Carsten ◽  
Mareike R Johnston ◽  
Lisa I Douglas ◽  
David C Sands
Keyword(s):  
Field Trial ◽  
Biocontrol Agent ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Wild Oats ◽  
San Clemente Island

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

scholarly journals A Preliminary Assessment of Amblyseius andersoni (Chant) as a Potential Biocontrol Agent against Phytophagous Mites Occurring on Coniferous Plants

Insects ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 664
Author(s):  
Ewa Puchalska ◽  
Stanisław Kamil Zagrodzki ◽  
Marcin Kozak ◽  
Brian G. Rector ◽  
Anna Mauer
Keyword(s):  
Biocontrol Agent ◽  
Mass Rearing ◽  
Predator Population ◽  
Preliminary Assessment ◽  
Amblyseius Andersoni ◽  
Food Items ◽  
Oligonychus Ununguis ◽  
Potential Biocontrol Agent ◽  
Pine Pollen ◽  
Survival And Reproduction

Development, survival and reproduction of Ambyseius andersoni (Chant), a predatory mite widely distributed in Europe, were assessed on different food items. These included two key pests of ornamental coniferous plants, i.e., Oligonychus ununguis (Jacobi) and Pentamerismus taxi (Haller) and pollen of Pinus sylvestris L. The rationale behind these experiments was to provide a preliminary assessment of the potential of A. andersoni as a biocontrol agent of the above phytophagous arthropods and evaluate pine pollen as an alternative food source for the predator. Under laboratory conditions (23 ± 0.5 °C, 70 ± 10% RH and 16L:8D) A. andersoni was able to feed, develop and reproduce on all tested diets. The shortest development time (egg to female) was obtained when the predator fed on P. taxi (mean = 5.12 d) and the longest was on pine pollen (mean = 6.55 d). The rm value was significantly higher on both tested prey (0.166 on P. taxi and 0.160 on O. ununguis) than on pollen (0.139). Thus, we do not recommend pine pollen for mass rearing of A. andersoni; however, we conclude that pollen may provide sufficient sustenance for the predator population under field conditions when prey are absent. The potential of A. andersoni as a biocontrol agent of O. ununguis and P. taxi is discussed.

scholarly journals Oxidative Stress Correlates with Wolbachia-Mediated Antiviral Protection in Wolbachia-Drosophila Associations

2015 ◽  
Vol 81 (9) ◽  
pp. 3001-3005 ◽  
Author(s):  
Zhee Sheen Wong ◽  
Jeremy C. Brownlie ◽  
Karyn N. Johnson
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Biocontrol Agent ◽  
Oxygen Species ◽  
Content Type ◽  
Host Insect ◽  
Fitness Traits ◽  
Endogenous Reactive Oxygen Species ◽  
Potential Biocontrol Agent ◽  
Definition Of

ABSTRACTWolbachiamediates antiviral protection in insect hosts and is being developed as a potential biocontrol agent to reduce the spread of insect-vectored viruses. Definition of the molecular mechanism that generates protection is important for understanding the tripartite interaction between host insect,Wolbachia, and virus. Elevated oxidative stress was previously reported for a mosquito line experimentally infected withWolbachia, suggesting that oxidative stress is important forWolbachia-mediated antiviral protection. However,Wolbachiaexperimentally introduced into mosquitoes impacts a range of host fitness traits, some of which are unrelated to antiviral protection. To explore whether elevated oxidative stress is associated with antiviral protection inWolbachia-infected insects, we analyzed oxidative stress of fiveWolbachia-infectedDrosophilalines. In flies infected with protectiveWolbachiastrains, hydrogen peroxide concentrations were 1.25- to 2-fold higher than those in paired fly lines cured ofWolbachiainfection. In contrast, there was no difference in the hydrogen peroxide concentrations in flies infected with nonprotectiveWolbachiastrains compared to flies cured ofWolbachiainfection. Using aDrosophilamutant that produces increased levels of hydrogen peroxide, we investigated whether flies with high levels of endogenous reactive oxygen species had altered responses to virus infection and found that flies with high levels of endogenous hydrogen peroxide were less susceptible to virus-induced mortality. Taken together, these results suggest that elevated oxidative stress correlates withWolbachia-mediated antiviral protection in naturalDrosophilahosts.

Assessing the effect of oral exposure to Paenibacillus alvei , a potential biocontrol agent, in male, non-pregnant, pregnant animals and the developing rat fetus

2017 ◽  
Vol 103 ◽  
pp. 203-213 ◽  
Author(s):  
Robert L. Sprando ◽  
Thomas Black ◽  
Nicholas Olejnik ◽  
Zachary Keltner ◽  
Vanessa Topping ◽  
...  
Keyword(s):  
Biocontrol Agent ◽  
Oral Exposure ◽  
Rat Fetus ◽  
Potential Biocontrol Agent ◽  
Paenibacillus Alvei ◽  
Developing Rat
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