Abstract
ABSTRACT The South American fruit fly Anastrepha fraterculus (Wied., 1830) is one of the major insect pests of economic importance in vineyards of Southern Brazil. Understanding species behavior and knowing the moments when their population peaks occur can help producers and technicians to define management strategies. This work was carried out the spatial and temporal distribution of the A. fraterculus in two commercial vineyards of variety ‘Moscato Branco’ for two crop seasons. To evaluate the A. fraterculus distribution, we used the mass trapping system with handmade traps (transparent plastic bottles of polyethylene terephthalate - PET), baited with hydrolyzed protein CeraTrap™. The evaluations were performed every two weeks, counting the total number of adults found per trap in each vineyard. From the number of insects caught per trap, data analysis was performed using geostatistics, through semivariograms. The spatio-temporal fruit fly distribution was evaluated by thematic maps, using the inverse square distance interpolation. The semivariograms showed that most of the reviews were ‘pure nugget’ effect, indicating the absence of spatial data dependence. The spatio-temporal distribution maps allow us to assert that A. fraterculus shows invasive behavior in the vineyard, with its entry from the edges to the center, associated with the fruit ripening.
Highlights
The South American fruit fly Anastrepha fraterculus (Wiedmann, 1830) (Diptera: Tephritidae) is one of the main species of pest insects associated with grapevine in Southern Brazil (Formolo et al, 2011; Zart et al, 2011)
Of the 2,382 Tephritidae specimens collected in the current study, all insects belonged to the genus Anastrepha Schiner and were identified as Anastrepha fraterculus (Wiedmann, 1830), corroborating other studies carried out in Southern Brazil (Nava & Botton, 2010; Garcia & Norrbom, 2011; Nunes et al, 2012; Dias et al, 2013; Pereira-Rêgo et al, 2013; Bortoli et al, 2016)
pure nugget effect (PNE) is commonly reported in Entomology studies, since spatial dependence may occur on a smaller scale than those used in some experiments (Liebhold et al, 1993)
Summary
The South American fruit fly Anastrepha fraterculus (Wiedmann, 1830) (Diptera: Tephritidae) is one of the main species of pest insects associated with grapevine in Southern Brazil (Formolo et al, 2011; Zart et al, 2011). With market demand for increased fruit quality, A. fraterculus has become a significant pest, mainly in white skin grape varieties (Zart et al, 2011), in which their injuries damage the visual appearance of the fruits and jeopardize the sale. Machota Junior et al (2013) identified plant pathogens associated with the A. fraterculus in vineyards and reporting the presence of several wild species to the plant, such as Botrytis cinerea, Cladosporium spp., Colletotrichum spp. and Penicillium spp., a factor that increases the fruit fly
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
