Voracity and Prey Preference of Insidious Flower Bug (Hemiptera: Anthocoridae) for Immature Stages of Soybean Aphid (Hemiptera: Aphididae) and Soybean Thrips (Thysanoptera: Thripidae)

2008 ◽  
Vol 37 (4) ◽  
pp. 964-972 ◽  
Author(s):  
Casey D. Butler ◽  
Robert J. O'Neil
Keyword(s):  
Soybean Aphid ◽  
Prey Preference ◽  
Immature Stages ◽  
Soybean Thrips ◽  
Insidious Flower Bug

Potential of an alternative prey to disrupt predation of the generalist predator, Orius insidiosus, on the pest aphid, Aphis glycines, via short-term indirect interactions

2008 ◽  
Vol 98 (6) ◽  
pp. 631-639 ◽  
Author(s):  
N. Desneux ◽  
R.J. O'Neil
Keyword(s):  
Positive Impact ◽  
Soybean Aphid ◽  
Aphis Glycines ◽  
Indirect Interactions ◽  
Prey Preference ◽  
Generalist Predator ◽  
Alternative Prey ◽  
Orius Insidiosus ◽  
Short Term ◽  
The Impact

AbstractGeneralist insect predators can significantly impact the dynamics of pest populations; and, using alternative prey, they can rapidly establish in disturbed agroecosystems. However, indirect interactions between prey can occur, leading to either increased or decreased predation on focal prey. The present paper demonstrates how alternative prey can disrupt predation by the hemipteran Orius insidiosus on the soybean aphid Aphis glycines via short-term indirect interactions. We used laboratory microcosms to measure the impact of the predator on the population growth of the aphid in the presence of alternative prey, soybean thrips Neohydatothrips variabilis, and we characterized the foraging behaviour of the predator to assess prey preference. We showed that O. insidiosus predation on aphids was reduced in the presence of thrips and that this positive impact on aphids increased as thrips density increased. Results from the behavioural experiment support the hypothesis of a prey preference toward thrips. When prey-pest ratio is aphid-biased, short-term apparent commensalism between prey occurs in favour of the most abundant prey (aphids) with no switching behaviour appearing in O. insidiosus. These results demonstrate that potential indirect interactions should be taken into account when considering O. insidiosus as a biocontrol agent against the soybean aphid.

Jasmonate-dependent plant defenses mediate soybean thrips and soybean aphid performance on soybean

2016 ◽  
Vol 10 (4) ◽  
pp. 273-282 ◽  
Author(s):  
Patrick Selig ◽  
Stacy Keough ◽  
Vamsi J. Nalam ◽  
Punya Nachappa
Keyword(s):  
Plant Defenses ◽  
Soybean Aphid ◽  
Soybean Thrips

Soybean Aphid Efficacy Evaluation

2010 ◽  
Author(s):  
Matthew E. O'Neal ◽  
Erin W. Hodgson ◽  
Kevin Johnson ◽  
Gregory R. VanNostrand ◽  
Nicholas P. Schmidt ◽  
...  
Keyword(s):  
Soybean Aphid ◽  
Efficacy Evaluation

scholarly journals Perception and Use of Economic Thresholds Among Farmers and Agricultural Professionals: A Case Study on Soybean Aphid in Minnesota

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Natalie Hoidal ◽  
Robert L Koch
Keyword(s):  
Soybean Aphid ◽  
Educational Outreach ◽  
Economic Injury Level ◽  
Economic Thresholds ◽  
Foundational Principle ◽  
Economic Injury ◽  
Fundamental Misunderstanding ◽  
The Difference ◽  
Commercial Pesticide ◽  
Agricultural Professionals

Abstract Economic thresholds (ETs) are a foundational principle of integrated pest management but are not always widely accepted by farmers and agricultural professionals. This article reports on a survey of Minnesota farmer and agricultural professional perceptions of the ET for soybean aphid, Aphis glycines Matsumura (Hempitera: Aphididae). We discuss insights for Extension programs on how to frame the importance of thresholds and teach stakeholders to use them effectively. Key takeaways include farmers and agricultural professionals often worry about combined effects of insect, disease, and physiological pressures, whereas effects of interactions with these other stressors are seldom discussed in educational outreach. Across groups, there is a fundamental misunderstanding about the difference between ETs and economic injury level. Many survey participants reported believing in the ET but lacked the time and capacity to fully implement it. Sales agronomists and farmers were the least likely groups to trust the university-determined soybean aphid ET, whereas commercial pesticide applicators and independent consultants were the most likely groups to trust it. Based on these results, we recommend adapting communication about ETs based on the target audience to address common misconceptions and barriers to ET use that are unique to each group.

Culex (Culex) longitubus, A New Species of the Mimeticus Subgroup (Diptera: Culicidae) From Bhutan

2021 ◽  
Author(s):  
Pradya Somboon ◽  
Thanari Phanitchakun ◽  
Jassada Saingamsook ◽  
Rinzin Namgay ◽  
Ralph E Harbach
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Male Genitalia ◽  
Immature Stages ◽  
High Altitudes ◽  
Coi Sequences ◽  
Anal Papillae ◽  
A New Species

Abstract Culex longitubus Somboon, Namgay & Harbach is described as a new species of the Mimeticus Subgroup of the subgenus Culex. The larva is most similar to the larva of Cx. tianpingensis Chen from China, but is distinguished by the length of the siphon and the anal papillae, the form of the comb scales and pecten spines, and the development of setae 7-P, 13-T, 1-X, and 4-X. The adults have wing markings and male genitalia similar to those of species of the Mimeticus Complex. Phylogenetic analysis of COI sequences revealed that the new species is closely related to Cx. murrelli Lien of the Mimulus Complex. The immature stages of the new species were found in stagnant pools and marshes at high altitudes in several districts of Bhutan.

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