Suppression of Colorado potato beetle infestation by pheromone-mediated augmentation of the predatory spined soldier bug, Podisus maculiventris (Say) (Heteroptera: Pentatomidae)

1999 ◽  
Vol 1 (3) ◽  
pp. 209-217 ◽  
Author(s):  
J. R. Aldrich ◽  
W. W. Cantelo
2004 ◽  
Vol 39 (4) ◽  
pp. 483-489 ◽  
Author(s):  
Kevin W. Thorpe ◽  
Jeffrey R. Aldrich

The date at which spined soldier bugs, Podisus maculiventris (Say) (Heteroptera: Pentatomidae), can be trapped for augmentative release against overwintered Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), may be up to 5 wks earlier than the date of peak Colorado potato beetle emergence, necessitating storage of field-collected spined soldier bugs prior to release. The effects of temperature, photoperiod, and food on spined soldier bug survivorship and fecundity during and after a 5-wk storage period were investigated. In general, unfed spined soldier bugs had greater mortality and reduced fecundity compared with those fed string beans and mealworm larvae during storage. Temperature and photoperiod generally had no effect. However, female spined soldier bug survivorship was greater among unfed insects stored at 5°C compared with those stored at 15°C. Therefore, household refrigerators can be used for short-term storage of field-collected spined soldier bugs. Even when stored spined soldier bug females are fed, fecundity is low (14 nymphs per female originally collected). This may limit the use of field-collected spined soldier bugs for augmentative release against Colorado potato beetle to relatively small plantings of potatoes.


HortScience ◽  
1996 ◽  
Vol 31 (6) ◽  
pp. 913B-913
Author(s):  
Rose Hiskes ◽  
Richard Ashley

Posisus maculiventris, a Colorado potato beetle (CPB) predator native to Connecticut, is commercially available. This research evaluated Podisus' effectiveness against CPB at different predator-to-prey ratios. Field experiments were conducted over two summers. The first summer yields in the treatment with 100 CPB eggs and 6 predators and the control (0 CPB eggs and 0 predators) were significantly higher than treatment with 100 CPB eggs and 0 predators. The second summer yield for treatment with 100 CPB eggs and 12 predators and the control were significantly higher than the remaining treatments with 0, 3, and 6 predators. Podisus maculiventris holds promise for control of CPB on potatoes grown under rowcover. Further research, determining the effects of all native CPB predators as pesticides more favorable to them are used, is needed.


Author(s):  
М. С. Мороз

Встановлено, що оптимізоване живильне середовище для культивування Podisus maculiventris Say. забезпечує високий рівень розвитку популяції. Запропоноване живильне середовище на достеменно високому рівні забезпечує виживання, зменшення тривалості постембріонального розвитку, зростання показників маси імаго, кількості відкладених яєць. Вирощені на живильному середовищі хижі клопи спроможні знайти і знищити за добу на  27,91 і 41,86 відсотків  більше яєць колорадського жука порівняно з контрольним варіантом. It is set that an optimized nourishing environment for cultivation of Podisus maculiventris Say. provides the high level of development of population. The offered nourishing environment provides a survival at certain high level, a reduction to duration of post-embryonic development, an increase of indexes of mass of imago, amount of the set aside eggs. The predatory bedbugs grown on a nourishing environment are able to find and destroy for a day on 27,91 and 41,86 percents more eggs of the Colorado potato beetle comparatively with a control variant.


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