Journal ArticleDOI
Colorado Potato Beetle Resistance to Insecticides
Reads0
Chats0
TLDR
Still limited understanding of beetle biology, its flexible life history, and grower reluctance to adopt some of the resistance management techniques create impediments to successful resistance management.Abstract:
The Colorado potato beetle, Leptinotarsa decemlineata (Say), is widely regarded as the most important insect defoliator of potatoes. Its current range covers about 16 million km2 in North America, Europe, and Asia and continues to expand. This insect has a complicated and diverse life history, which is well-suited to agricultural environments, and makes it a complex and challenging pest to control. Dispersal, closely connected with diapause, feeding, and reproduction, allow the Colorado potato beetle to employ “bet-hedging” reproductive strategies, distributing its offspring in both space (within and between fields) and time (within and between years). The Colorado potato beetle played a large role in creating the modern pesticide industry, with hundreds of chemicals tested against it. High selection pressure, together with natural propensity to adapt to toxic substances, eventually resulted in a large number of insecticide-resistant Colorado potato beetle populations. Since the middle of the last century, the beetle has developed resistance to 52 different compounds belonging to all major insecticide classes. Resistance levels vary greatly among different populations and between beetle life stages, but in some cases can be very high (up to 2,000-fold). Known mechanisms of Colorado potato beetle resistance to insecticides include enhanced metabolism involving esterases, carboxylesterases and monooxygenases, and target site insensitivity, as well as reduced insecticide penetration and increased excretion. There is also some evidence of behavioral resistance. Resistance mechanisms are sometimes highly diverse even within a relatively narrow geographical area. Resistance is usually inherited as an incompletely dominant or incompletely recessive trait, with one or several genes involved in its determination. Because of pleiotropic effects of resistant alleles, insecticide-resistant beetles often have reduced relative fitness in the absence of insecticides. Rotating different classes of insecticides and reducing insecticidal pressure on pest populations by provision of temporal and spatial refuges from exposure to toxins have been proposed to delay evolution of resistance. However, insecticide resistance in this insect will likely remain a major challenge to the pest control practitioners. Still limited understanding of beetle biology, its flexible life history, and grower reluctance to adopt some of the resistance management techniques create impediments to successful resistance management. Overcoming these obstacles is not an easy task, but it will be crucial for sustainable potato production.read more
Citations
More filters
Journal ArticleDOI
Systemic insecticides (neonicotinoids and fipronil): trends, uses, mode of action and metabolites
Noa Simon-Delso,Noa Simon-Delso,V. Amaral-Rogers,Luc P. Belzunces,Jean-Marc Bonmatin,Madeleine Chagnon,Craig A. Downs,Lorenzo Furlan,David W. Gibbons,Chiara Giorio,Vincenzo Girolami,Dave Goulson,David P. Kreutzweiser,Christian H. Krupke,Matthias Liess,Elizabeth Y. Long,Melanie McField,Pierre Mineau,Edward A. D. Mitchell,Christy A. Morrissey,D. A. Noome,L. Pisa,Josef Settele,John D. Stark,Andrea Tapparo,H Van Dyck,J. van Praagh,J.P. van der Sluijs,J.P. van der Sluijs,Penelope R. Whitehorn,Martin Wiemers +30 more
TL;DR: In this paper, a review of the global literature explores these risks and show a growing body of evidence that persistent, low concentrations of these insecticides pose serious risks of undesirable environmental impacts.
Journal ArticleDOI
Ingested RNA interference for managing the populations of the Colorado potato beetle, Leptinotarsa decemlineata.
TL;DR: This study provides the first example of an effective RNAi response in insects after feeding ds RNA produced in bacteria, and suggests that the efficient induction of RNAi using bacteria to deliver dsRNA is a possible method for management of Colorado potato beetle.
Journal ArticleDOI
Full crop protection from an insect pest by expression of long double-stranded RNAs in plastids
TL;DR: Transplastomic potato plants producing dsRNAs targeted against the β-actin gene of the Colorado potato beetle were protected from herbivory and were lethal to its larvae, demonstrating chloroplast expression of long ds RNAs can provide crop protection without chemical pesticides.
Journal ArticleDOI
Neonicotinoid Metabolism: Compounds, Substituents, Pathways, Enzymes, Organisms, and Relevance
TL;DR: Relationships explain much of neonicotinoid comparative toxicology and provide the basis for continued and improved safety and effectiveness of this chemotype.
Journal ArticleDOI
Crops that feed the world 8: Potato: are the trends of increased global production sustainable?
Paul R. J. Birch,Paul R. J. Birch,Glenn J. Bryan,Brian Fenton,Eleanor M. Gilroy,Ingo Hein,John T. Jones,Ankush Prashar,Mark A. Taylor,Lesley Torrance,Ian K. Toth +10 more
TL;DR: The genomics era is accelerating the understanding of the key genes and mechanisms underlying potato development, physiology, water and nutrient use efficiency and resistance to biotic and abiotic stresses, and Genomics technologies provide the potential for more rapid, marker-assisted breeding strategies, and afford the opportunity for biotechnological approaches.
References
More filters
Book
comprehensive molecular insect science
TL;DR: Includes: Molecular Genetics of Insect Fertilization Sex Determination and the Development of the Genital Disc Dosage Compensation Fat-Cell Development The Juvenile Hormones.
Journal ArticleDOI
Evolution of Resistance to Bacillus Thuringiensis
TL;DR: Insecticides derived from the common soil bacterium Bacillus thuringiensis (Bt) are becoming increasingly important for pest management as discussed by the authors, as mounting concerns about environmental hazards and widespread resistance in pest populations are reducing the value of conventional synthetic insecticides.
Book
The Genetical Analysis of Quantitative Traits
M. J. Kearsey,Harpal S. Pooni +1 more
TL;DR: This paper presents designs for half-sib mating designs and describes the consequences of linkage by environment interaction, as well as applications for selfing and full-siber mating.
Journal ArticleDOI
Resistance of insect pests to neonicotinoid insecticides: current status and future prospects.
Ralf Nauen,Ian Denholm +1 more
TL;DR: Strategies to combat neonicotinoid resistance must take account of the cross-resistance characteristics of these mechanisms, the ecology of target pests on different host plants, and the implications of increasing diversification of the neonicsotinoid market due to a continuing introduction of new molecules.