Evaluation of interception traps for capture of Xylotrechus arvicola (Coleoptera: Cerambycidae) in vineyards varieties from Protected Denomination of Origin León

Xylotrechus arvicola (Coleoptera: Cerambycidae) is a pest in vineyards (Vitis vinifera) in the main Spain wine-producing regions with Protected Denomination of Origin (PDO). The action of the larvae, associated to the spreading of wood fungi, causes damage especially in important varieties of V. vinifera. X. arvicola females lay eggs concentrated in cracks or under the rhytidome in the wood vines, which allows the emerging larvae to get into the wood and make galleries inside the plant being then necessary to prune intensively or to pull up the bored plants (1). The objective of the study was to evaluate captures of X. arvicola insects in five varieties of V. vinifera in PDO León. In 2022, trapping experiments were conducted in the wine-producing region of Spain (PDO León) in five varieties of V. vinifera (Tempranillo, Prieto Picudo, Albarín, Mencía and Verdejo), using interception traps (CROSSTRAP^®) with a ethanol (2), in a completely randomized design. The traps were checked every few days and the number of mean adults captured in traps were compared using one-way ANOVA followed by Fisher´s LSD post-hoc test (P<0.05). The greatest days of insects captures were from 1-June to 13-June (25 in Tempranillo, 26 in Prieto Picudo, 21 in Albarín, 17 in Mencía and 6 in Verdejo). Tempranillo and Prieto Picudo varieties had more insects captured per trap (2.75 and 2.66 insects, respectively) during all the evaluation period in the vineyards, significantly different from insects captured per trap in Albarín variety (1.83 insects), Mencía variety (1.58 insects) and Verdejo variety (0.66 insects). Tempranilloand Prieto Picudo were the varieties more attacked by X. arvicola. The first days of June were capture the highest number of X. arvicola adults.

Acknowledgments:

Special thanks to the own research program of the University of León 2022 for the grant awarded to Daniela Ramírez Lozano, to the Ministry of Education, Culture and Sport (Spain) for the grant awarded to Laura Zanfaño González (FPU 20/03040).

References:

1) Rodríguez-González, A. et al. (2020) Failure under stress of grapevine Wood: the effects of the Cerambycid Xylotrechus arvicola on the biomechanics properties of Vitis vinifera. Ciencia y tecnología 22(2): 167-178, DOI: 10.4067/S0718-221X2020005000203
2) Rodríguez-González, A. et al. (2018) Evaluation of commercial and prototype traps for Xylotrechus arvicola (Coleoptera: Cerambycidae), an insect pest in Spanish vineyards. Australian Journal of Grape and Wine Research 24, 190-196, DOI 10.1111/ajgw.12324