Landscape diversity enhances parasitism of cotton bollworm (Helicoverpa armigera) eggs by Trichogramma chilonis in cotton

Liu, Bing; Yang, Long; Yang, Fan; Wang, Qian; Yang, Ye; Lu, Yanhui; Gardiner, Mary M.

doi:10.1016/j.biocontrol.2015.11.004

Cited by 33 publications

(18 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We hypothesize that light intensity may be an important determinant of abundance and parasitism, similar to that reported for Pseudacteon litoralis Borgmeier (Diptera: Phoridae) attacking Solenopsis saevissima (Smith) (Hymenoptera: Formicidae) in Rio Claro, São Paulo, Brazil (Pesquero et al 1996), but this hypothesis would need further investigation. The highest number of ants parasitized in the semi-deciduous forest fragment may be due to the landscape diversity of this area with alternative sites for feeding and refuge, enhancing parasitoid populations (Pozzebon et al 2015;Liu et al 2016b;Damien et al 2017). This agrees with the higher number of ants parasitized by E. tonhascai, Eibesfeldtphora bragancai Brown (Diptera: Phoridae), and A. attophilus in a Cerrado fragment containing Eucalyptus sp.…”

Section: Discussionmentioning

confidence: 99%

“…Landscape structure is important for parasitoid-host interaction (Thies et al 2005;Liu et al 2016b), and fragmentation and loss of environmental complexity may decrease natural enemy abundance (Elizalde & Queiroz 2013;Zhao et al 2015). Highly diversified landscapes may provide multiple resources, such as nest sites, temporary refuges, and food (Alignier et al 2014;Liu et al 2016b), whereas agricultural landscapes, e.g., pasture and field crops, have fewer resources due to reduced habitat complexity (Kleijn et al 2009;Thies et al 2w011).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal Parasitism of the Leaf-Cutting Ant Atta sexdens Linnaeus (Hymenoptera: Formicidae) by Phorid Flies (Diptera: Phoridae) in a Brazilian Cerrado-Atlantic Forest Ecotone

Farder-Gomes

Oliveira²,

Oliveira

et al. 2020

Florida Entomologist

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seasonal Parasitism of the Leaf-Cutting Ant Atta sexdens Linnaeus (Hymenoptera: Formicidae) by Phorid Flies (Diptera: Phoridae) in a Brazilian Cerrado-Atlantic Forest Ecotone

Farder-Gomes

Oliveira²,

Oliveira

et al. 2020

Florida Entomologist

View full text Add to dashboard Cite

“…It makes sense to consider that the dispersal of A. lucorum adults may largely occur between maize and cotton fields, and the sink role of maize fields from source cotton fields is likely widespread at the landscape scale in North-eastern China (e.g. Anhui, Beijing, Hebei, Henan, Jiangsu, Tianjin and Shandong) where maize and cotton are largely embroiled in farmlands (Wu et al, 2004;Lu et al 2012;Liu et al 2016;MOA 2018; and see Fig. S3).…”

Section: Discussionmentioning

confidence: 99%

Maize fields are a potential sink for an outbreaking mirid bug pest in Chinese Bt-cotton agricultural landscapes

Jiao

Jaworski

et al. 2019

Agriculture, Ecosystems & Environment

Self Cite

View full text Add to dashboard Cite

Agricultural landscapes are fast-changing systems due to crop planting and harvesting. These events strongly influence movements of arthropod pests and their natural enemies, yet they are insufficiently considered to implement informed pest management strategies. In China, the adoption of Bt-cotton crops at very large scales has given rise to the recent pest status of mirid bugs such as Apolygus lucorum in cotton fields. In this study we relied on carbon 13 stable isotope analysis to estimate the dispersal of A. lucorum in the Bt-cotton agricultural landscape, composed of a mosaic of cotton and maize and other minor crops. We showed that a diet on C 3-plants including cotton induced a significantly different signature than the C 4-plant maize. Based on δ 13 C ratios, we showed that more than 75% of mirid bugs caught in maize fields did not originate in situ, since they had a C 3-diet and therefore most likely dispersed from neighbouring cotton fields. Conversely, less than 10% of mirid bugs in cotton fields had a diet on C 4-plants, so the vast majority of them did not disperse from maize fields but instead likely stayed in cotton fields. We also observed a delayed establishment of A. lucorum populations in maize fields compared to cotton fields, likely due to host phenology. Indeed we showed in laboratory that juveniles' survival rate and adults' fecundity are high on maize silk and grain only, whose resources are available in the field shortly before harvest. Unidirectional movements of mirids from cotton to maize associated with poor developmental success on maize highlight the high potential of maize fields to act as a sink for A. lucorum mirid bug pests. This could be wisely implemented in IPM programs to enhance the management of mirid bug population outbreaks in cotton fields and reduce yield loss on cotton.

show abstract

“…Dans la vallée de San Joaquin en Californie, la gestion du ravageur par la conservation de bandes de luzerne non récoltées a permis une baisse significative de l'utilisation d'insecticide, avec moins d'une application par saison (Goodell, 2009). En Chine, Liu et al (2016) ont montré que la diversité des paysages augmentait le parasitisme des oeufs d'H. armigera par Trichogramma chilonis en culture de coton.…”

Section: Composer Les Actions Et Les éChellesunclassified

Repenser la gestion des ravageurs du cotonnier en Afrique de l’Ouest

Brévault¹,

Badiane²,

Goebel³

et al. 2019

Cah. Agric.

View full text Add to dashboard Cite

Les insectes ravageurs représentent une contrainte majeure à l’augmentation du rendement en culture cotonnière en Afrique de l’Ouest. Les filières cotonnières se sont engagées, à des degrés divers, dans des démarches de gestion intégrée des ravageurs pour réduire l’utilisation des insecticides et limiter en amont les risques sanitaires et environnementaux. Toutefois, un changement fondamental des pratiques, au bénéfice de la stimulation des services de régulation naturelle des ravageurs, s’impose pour mettre au point des systèmes de production encore plus économes en pesticides et plus résilients. Les leviers permettant de stimuler les processus écologiques de régulation naturelle des ravageurs sont multiples et redevables d’actions à différentes échelles, du champ cultivé au territoire, mais nécessitent d’approfondir notre connaissance du système de vie des ravageurs et de leurs ennemis naturels. Ils nécessitent aussi une plus grande prise en compte de la perception et des pratiques des acteurs dans une approche participative de la gestion collective des ressources et des processus d’innovation. À terme, il s’agit de construire une organisation territorialisée d’actions individuelles et collectives de gestion des ravageurs et des services écosystémiques, incluant des dimensions écologiques, économiques et sociales.

show abstract

Landscape diversity enhances parasitism of cotton bollworm (Helicoverpa armigera) eggs by Trichogramma chilonis in cotton

Cited by 33 publications

References 63 publications

Seasonal Parasitism of the Leaf-Cutting Ant Atta sexdens Linnaeus (Hymenoptera: Formicidae) by Phorid Flies (Diptera: Phoridae) in a Brazilian Cerrado-Atlantic Forest Ecotone

Seasonal Parasitism of the Leaf-Cutting Ant Atta sexdens Linnaeus (Hymenoptera: Formicidae) by Phorid Flies (Diptera: Phoridae) in a Brazilian Cerrado-Atlantic Forest Ecotone

Maize fields are a potential sink for an outbreaking mirid bug pest in Chinese Bt-cotton agricultural landscapes

Repenser la gestion des ravageurs du cotonnier en Afrique de l’Ouest

Contact Info

Product

Resources

About