Insecticide resistance profiles can be misleading in predicting the survival of Myzus persicae genotypes on potato crops following the application of different insecticide classes

Abstract

Control strategies based on knowledge of the genetically determined insecticide resistance profile of an M. persicae population alone are insufficient. Hence, other important factors contributing to aphid survival under insecticide pressure need to be considered.

Genetic variation in target-site resistance to pyrethroids and pirimicarb in Tunisian populations of the peach potato aphid,Myzus persicae(Sulzer) (Hemiptera: Aphididae)

“…Spatial and/or temporal variation in host availability during different stages of the life cycle can also affect clonal dynamics and genetic diversity . However, many aspects of resistance dynamics and genetic diversity of M. persicae on its primary and secondary hosts remain poorly understood …”

Plant immunity in plant–aphid interactions

“…Different mechanisms can underlie the development of resistance including changes in the cuticle ( Ahmad et al, 2006 ; Zhang et al, 2008 ), point mutations in insecticide target genes ( Li et al, 2007 ), and increased production of metabolic enzymes that can break down insecticides ( Puinean et al, 2010 ; Jackson et al, 2011 ). Although insecticide resistance mediated by these mechanisms plays a major role in infestations of field crops, these resistance mechanisms are not the sole determinants of aphid survival in the field and other factors are predicted to be involved ( van Toor et al, 2013 ). With increasing issues related to the use of insecticides, there is an urgent need to explore novel avenues for controlling aphid infestations.…”

Genetic diversity and insecticide resistance during the growing season in the green peach aphid (Hemiptera: Aphididae) on primary and secondary hosts: a farm-scale study in Central Chile

“…The development and evolution of insecticide resistance in aphid pest populations is not only associated with the insecticide itself but also with the complexity of their annual life cycle and several other aspects of the agroecosystem (e.g., Fenton et al , 2005; Zamoum et al , 2005; Kasprowicz et al , 2008). Thus, the interplay between the complexity of aphid reproductive modes, dispersal and the evolution of insecticide resistance are still poorly understood (van Toor et al , 2013).…”

“…Likewise, because in heteroecious populations the sexual phase occurs on the primary host, a higher genetic variability is expected for those populations (Wilson et al , 2002; Guillemaud et al , 2003 a ), resulting in increased chances to reach the end of the season with higher genetic diversity and frequency of alleles conferring insecticide resistance mechanism. However, the dynamic of both the genetic diversity and insecticide resistance during the growing season in populations of the green peach aphid on its primary and secondary hosts it remains poorly understood, particularly at a farm-scale (van Toor et al , 2013).…”