Head Capsule Width as an Index of Age in Larvae of Navel Orangeworm, Amyelois transitella (Lepidoptera: Pyralidae)

1983 ◽  
Vol 12 (1) ◽  
pp. 219-221 ◽  
Author(s):  
L. E. Caltagirone ◽  
W. Getz ◽  
D. W. Meals
Keyword(s):  
Head Capsule ◽  
Amyelois Transitella ◽  
Navel Orangeworm ◽  
Head Capsule Width ◽  
Lepidoptera Pyralidae

The Navel Orangeworm, Amyelois transitella (Walker) (Lepidoptera: Pyralidae), Discovered in Northeastern Mexico Feeding on Sapindaceae

2017 ◽  
Vol 119 (4) ◽  
pp. 601-605
Author(s):  
Manuel Lara-Villalón ◽  
Venancio Vanoye-Eligio ◽  
M. Alma Solís ◽  
Gerardo Sánchez-Ramos ◽  
Julio C. Chacón-Hernández
Keyword(s):  
Amyelois Transitella ◽  
Navel Orangeworm ◽  
Lepidoptera Pyralidae ◽  
Northeastern Mexico

scholarly journals Traps and Attractants for Monitoring Navel Orangeworm (Lepidoptera: Pyralidae) in the Presence of Mating Disruption

2020 ◽  
Vol 113 (3) ◽  
pp. 1270-1278 ◽  
Author(s):  
Charles S Burks ◽  
Bradley S Higbee ◽  
John J Beck
Keyword(s):  
Sex Ratio ◽  
Mating Disruption ◽  
Amyelois Transitella ◽  
Trap Design ◽  
Navel Orangeworm ◽  
Tree Nuts ◽  
Lepidoptera Pyralidae ◽  
Monitoring Traps

Abstract The use of aerosol mating disruption for management of the navel orangeworm Amyelois transitella (Walker) in California tree nuts has increased markedly. This treatment suppresses pheromone monitoring traps in neighboring orchards as well as in the orchard under treatment. The current study, therefore, addresses the interrelated topics of which attractant is most effective, how the number of adults captured is affected by trap design, and what sex is captured. Under most circumstances, wing traps baited with phenyl propionate (PPO) captured more adults than those baited with a 5-compound kairomone blend. Adding a pheromone lure along with the dispenser for the experimental attractant increased the number of adults captured with PPO both in and near-mating disruption. In contrast, addition of a pheromone lure along with the kairomone blend only increased the number of adults captured in orchards near but not under mating disruption. Delta traps, which are preferred by the industry, captured fewer adults than wing traps. Improvements in the number of adults captured with PPO in delta traps from addition of a pheromone lure and from design modifications were additive. Both sexes were captured by all attractants and trap designs tested, and the sex ratio was highly variable. Open traps like the wing trap captured a slightly higher proportion of males than closed traps. These findings are discussed in the context of management of the navel orangeworm.

Factors Associated with Variation in Cuticular Hydrocarbon Profiles in the Navel Orangeworm, Amyelois transitella (Lepidoptera: Pyralidae)

2019 ◽  
Vol 46 (1) ◽  
pp. 40-47 ◽  
Author(s):  
Esther N. Ngumbi ◽  
Lawrence M. Hanks ◽  
Andrew V. Suarez ◽  
Jocelyn G. Millar ◽  
May R. Berenbaum
Keyword(s):  
Cuticular Hydrocarbon ◽  
Amyelois Transitella ◽  
Navel Orangeworm ◽  
Factors Associated ◽  
Lepidoptera Pyralidae

scholarly journals X-Ray-Based Irradiation of Larvae and Pupae of the Navel Orangeworm (Lepidoptera: Pyralidae)

2020 ◽  
Vol 113 (4) ◽  
pp. 1685-1693 ◽  
Author(s):  
Ronald Haff ◽  
Inna Ovchinnikova ◽  
Peishih Liang ◽  
Noreen Mahoney ◽  
Wai Gee ◽  
...  
Keyword(s):  
Gamma Irradiation ◽  
Early Stage ◽  
High Energy ◽  
X Rays ◽  
Amyelois Transitella ◽  
Navel Orangeworm ◽  
X Ray ◽  
Data Points ◽  
Energy Gamma ◽  
Lepidoptera Pyralidae

Abstract The suitability of adult male the navel orangeworm, Amyelois transitella (Walker) for Sterile Insect Technique (SIT) has been reported for both high energy gamma (>1 MeV) and low energy x-ray (90 keV) sterilization. However, research regarding sterilization of NOW larvae and pupae by gamma irradiation indicated nonsuitability due to high mortality. Here, NOW larvae and pupae were irradiated to doses up to 50 Gy with 90 keV x-rays, then paired with nonirradiated colony mates. Sterility of surviving insects was determined by the presence or absence of hatched neonates. While presence of offspring does not guarantee viability, the absence does guarantee sterility (as is appropriate for SIT) and was thus the measure used here. Early stage larvae experienced 77% mortality at a dose of 30 Gy, versus 20% for nonirradiated control. At 40 Gy, mortality reached 98%. Of surviving early stage larvae at 30 Gy, 29% of moth pairs produced offspring. For late stage larvae, no offspring were produced at 40 Gy, but mortality was 73%. For pupae, mortality reached 53% at 30 Gy with 13% still producing neonates, while mortality reached 98% at 40 Gy. These results are consistent with reported results for gamma irradiation of NOW larvae where sterility was observed somewhere between the 30 Gy and 60 Gy data points, but mortality was high. This further confirms the lack of suitability of NOW irradiated in the larval stage, whether by gamma or x-ray, and supports the hypothesis that x-ray and gamma treatments are biologically equivalent at equal doses.

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