EFFECT OF POTATO FOLIAGE INFECTED WITH POTATO LEAFROLL VIRUS ON FECUNDITY AND LONGEVITY OF THE COLORADO POTATO BEETLE, LEPTINOTARSA DECEMLINEATA (COLEOPTERA: CHRYSOMELIDAE)

1982 ◽  
Vol 114 (6) ◽  
pp. 473-477 ◽  
Author(s):  
G. Boiteau ◽  
R. P. Singh
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Potato Leafroll Virus ◽  
Russet Burbank ◽  
Solarium Tuberosum ◽  
Potato Beetle ◽  
Resistant Varieties ◽  
Potato Foliage ◽  
Leafroll Virus

AbstractFemale Colorado potato beetles fed foliage of Solarium tuberosum of the Russet Burbank variety infected with potato leafroll virus have lower fecundity and shorter longevity than those fed virus-free foliage. Also, female beetles prefer feeding on foliage infected with potato leafroll virus. This observation could be of importance in the development of resistant varieties of potatoes to potato beetles.

DIFLUBENZURON: DIFFERENTIAL TOXICITY TO LARVAE OF THE COLORADO POTATO BEETLE (COLEOPTERA: CHRYSOMELIDAE) AND ITS INTERNAL PARASITE, DORYPHOROPHAGA DORYPHORAE (DIPTERA: TACHINIDAE)

1984 ◽  
Vol 116 (2) ◽  
pp. 197-202 ◽  
Author(s):  
George Tamaki ◽  
R. L. Chauvin ◽  
H. R. Moffitt ◽  
K. D. Mantey
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Fourth Instar ◽  
Internal Parasite ◽  
Potato Beetle ◽  
Differential Toxicity ◽  
Parasite Survival ◽  
Potato Foliage ◽  
Tachinid Parasite ◽  
Greenhouse Tests

AbstractAn insecticide, diflubenzuron, suppressed 3rd- and 4th-instar larvae of the Colorado potato beetle, Leptinotarsa decemlineata (Say), with reduced effect on the tachinid parasite, Doryphorophaga doryphorae (Riley), developing within the larvae. Concentrations applied to potato foliage were 50, 100, 300, and 500 mg/L. In laboratory and greenhouse tests, parasite survival was not adversely affected when the 3rd instars were treated with 50 mg/L diflubenzuron but survival decreased to 0 and 4% at 300 and 500 mg/L. Survival and emergence of the parasite from treated 4th instars were not adversely affected at any concentration tested. Fourth-instar beetle larvae were much more tolerant of diflubenzuron than were the 3rd instars. Neither fertility nor the ability to parasitize beetle larvae was adversely affected in adult parasites emerging from treated 3rd or 4th instars. Adult beetles developing from treated larvae mated normally and laid fertile eggs. Foliage consumption by the beetle larvae decreased progressively as dosage of diflubenzuron increased but only slowly once the dosage increased beyond 100 mg/L.

TIMING OF INSECTICIDE APPLICATIONS FOR THE CONTROL OF THE COLORADO POTATO BEETLE, LEPTINOTARSA DECEMLINEATA (SAY), (COLEOPTERA: CHRYSOMELIDAE), ON POTATOES IN NEW BRUNSWICK

1988 ◽  
Vol 120 (6) ◽  
pp. 587-591 ◽  
Author(s):  
G. Boiteau
Keyword(s):  
New Brunswick ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Russet Burbank ◽  
Optimal Time ◽  
Larval Abundance ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say ◽  
Spray Regimes ◽  
Insecticide Spray

AbstractDifferent insecticide spray regimes were tested in 1984, 1985, and 1986 to determine the optimal time to control the Colorado potato beetle, Leptinotarsa decemlineata (Say), on Russet Burbank potatoes in New Brunswick. Insecticides applied in mid-July at the peak of larval abundance when plants were entering into bloom had the greatest efficacy in controlling beetles and protecting the yield. A single insecticide application at 50% bloom was 12–17% and 82–95% more effective than one application at bloom and full growth, respectively.

scholarly journals AFLP-Based Genetic Linkage Map of the Colorado Potato Beetle Leptinotarsa decemlineata: Sex Chromosomes and a Pyrethroid-Resistance Candidate Gene

Genetics ◽  
2001 ◽  
Vol 158 (2) ◽  
pp. 695-700 ◽  
Author(s):  
David J Hawthorne
Keyword(s):  
Candidate Gene ◽  
Linkage Map ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Sex Chromosome ◽  
Pyrethroid Resistance ◽  
Codominant Markers ◽  
Potato Beetle

Abstract A genetic linkage map was constructed from an intraspecific cross of the Colorado potato beetle, Leptinotarsa decemlineata. This is an initial step toward mapping the loci that underlie important phenotypes associated with insect adaptation to an agroecosystem. The map was made with 172 AFLP and 10 anonymous codominant markers segregating among 74 backcross (BC1) individuals. Markers were mapped to 18 linkage groups and a subset of the markers with a mean intermarker distance of 11.1 cM is presented. A pyrethroid-resistance candidate gene, LdVssc1, was placed onto the map as well. The sex chromosome was identified by exploiting the XO nature of sex determination in this species using patterns of variation at LdVssc1 and the codominant markers.

Population-associated heterogeneity of the digestive Cys protease complement in Colorado potato beetle, Leptinotarsa decemlineata

2018 ◽  
Vol 106 ◽  
pp. 125-133 ◽  
Author(s):  
Asieh Rasoolizadeh ◽  
Marie-Claire Goulet ◽  
Jean-Frédéric Guay ◽  
Conrad Cloutier ◽  
Dominique Michaud
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Potato Beetle
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