Diel Activity and Behavior of &lt;I&gt;Bagrada hilaris&lt;/I&gt; (Hemiptera: Pentatomidae) on Desert Cole Crops

Huang, Ta I.; Reed, Darcy A.; Perring, Thomas M.; Palumbo, John C.

doi:10.1603/ec13048

Cited by 24 publications

(24 citation statements)

References 26 publications

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“…Although the flight range of Ba. hilaris has not yet been clearly determined, 50 m is greater than the 3-6 m flights commonly observed at peak daytime temperatures for this species (Huang et al 2012). At each site, we placed two potted A. canescens plants 10 m from one another.…”

Section: Bagrada Hilaris Recruitmentmentioning

confidence: 99%

Associational susceptibility of a native shrub induced by context‐dependent attraction of an invasive herbivore

2018

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Citation: Lillian, S., R. A. Redak, and M. P. Daugherty. 2018. Associational susceptibility of a native shrub induced by context-dependent attraction of an invasive herbivore. Ecosphere 9(10):Abstract. Indirect interactions among native and invasive species are notoriously difficult to predict.Here, we apply theory from trait-mediated indirect effects and plant-insect interactions to explain the outcomes of multiple invader interactions. The present study investigates the roles of herbivore preference and plant ontogeny in mediating associational effects among a southern California native shrub, Atriplex canescens, an invasive annual forb, Brassica tournefortii, and an invasive stink bug, Bagrada hilaris. Ba. hilaris have been observed to form dense aggregations on A. canescens in late spring following senescence of Br. tournefortii, with subsequent increased mortality of A. canescens. A manipulative experiment found Ba. hilaris recruited to A. canescens in approximately 70 times greater numbers when neighbored by Br. tournefortii than when alone. Ba. hilaris nymph production, while minimized experimentally, occurred only on Br. tournefortii, suggesting A. canescens is not of sufficient quality for Ba. hilaris reproduction. In greenhouse preference trials, Ba. hilaris exhibited an overall preference for Br. tournefortii over A. canescens; however, the magnitude of preference depended on ontogenetic stage of Br. tournefortii. Overall, our results suggest significant potential for associational susceptibility mediated by a combination of Ba. hilaris preference for reproductive Br. tournefortii, substantial aggregation of Ba. hilaris onto Br. tournefortii, and a marked decline in Ba. hilaris preference for Br. tournefortii with advancing ontogeny-triggering spillover onto neighboring plants. Our results demonstrate an important role for multiple invaders and phenologically driven trait changes in mediating associational susceptibility.

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Section: Bagrada Hilaris Recruitmentmentioning

confidence: 99%

Associational susceptibility of a native shrub induced by context‐dependent attraction of an invasive herbivore

2018

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“…High temperatures influences the walking and mating of bagrada bug (Huang et al, 2013). A study was done in feeding of bagrada bug and results suggested that this pest feeds effectively on brassica crops in the afternoon and evening when temperatures are high (Huang et al, 2013).…”

Section: Major Insect Pests Of Vegetables Grown In South Africamentioning

confidence: 99%

Constraints to Vegetable Production Resulting from Pest and Diseases Induced by Climate Change and Globalization: A Review

Phophi¹,

Mafongoya²

2017

JAS

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Vegetable production worldwide is constrained by pests and diseases which effects are exacerbated by climate change and variability. Greenhouse gas emissions are also increasing due to poor agricultural practices and other human activities. This will continue to have a negative impact on the prevalence of insect pests and diseases. This review focuses on the climatic factors that impact on insect pests and diseases of vegetable crops. High atmospheric temperatures and elevated carbon dioxide increases pest development, survival of pests and distribution of pest to new areas. The distribution of insect pests and diseases are not due to climate changes only but are also a result of globalisation and poor biosecurity measures at country borders. There is limited information on the distribution of pests and diseases due to globalisation in African countries. New exotic pests will continue to be introduced to countries if biosecurity measures are not improved. Future research must focus on how to manage emerging pests and diseases influenced by high temperatures and carbon dioxide and other climatic conditions which influence pest severity under smallholder farmers in the southern African regions.

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“…Accurately estimating adult density on broccoli can be difficult because adult numbers in fields tend to fluctuate throughout the day. Research has indicated that there is a clear positive association between daily temperature and population density of B. hilaris on broccoli (Huang et al 2013). Those studies consistently showed that adult numbers are very low in the cooler hours of the morning (0600 to 0900 h) and peak in mid to late afternoon (1200 to 1600 h), when temperatures are high.…”

Section: Introductionmentioning

confidence: 96%

Association Between Bagrada hilaris Density and Feeding Damage in Broccoli: Implications for Pest Management

Palumbo

Carrière

2015

Plant Health Progress

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Bagrada hilaris (Burmeister) (Hemiptera:Pentatomidae) has become a serious economic pest of brassica crops in Arizona and southern California. Feeding damage on broccoli can result in excessive seedling mortality and, on established plants, in malformed plants which are not commercially marketable. Although management tactics have been developed for this new pest, a reliable sampling technique for estimating adult density is lacking. Here, we analyzed data from 18 insecticide trials conducted from 2011 to 2014 in plots planted to broccoli to determine if estimates of fresh feeding damage on broccoli plants can be used to forecast B. hilaris densities. The proportion of plants with fresh feeding damage in a plot was significantly affected by year, trial nested within year, number of insecticides applied, and time after insecticide application. Average density of B. hilaris adults per plant in a plot was significantly affected by year, trial nested within year, and number of insecticides applied, while time after insecticide application had a marginal effect on population density. Across plots and years, the proportion of plants with fresh feeding damage was strongly and positively associated with the average number of B. hilaris adults per plant. Our results suggest that sampling young plants for signs of fresh feeding damage will provide a reliable and accurate sampling technique for monitoring B. hilaris in broccoli fields. We recommend that growers and pest control advisers focus their monitoring efforts on sampling broccoli plants for the presence of fresh feeding damage, rather than adults alone, when making pest management decisions. Accepted for publication 10 November 2015. Published 12 November 2015.

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Diel Activity and Behavior of <I>Bagrada hilaris</I> (Hemiptera: Pentatomidae) on Desert Cole Crops

Cited by 24 publications

References 26 publications

Associational susceptibility of a native shrub induced by context‐dependent attraction of an invasive herbivore

Associational susceptibility of a native shrub induced by context‐dependent attraction of an invasive herbivore

Constraints to Vegetable Production Resulting from Pest and Diseases Induced by Climate Change and Globalization: A Review

Association Between Bagrada hilaris Density and Feeding Damage in Broccoli: Implications for Pest Management

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