Raspberry ketone supplement promotes early sexual maturation in male Queensland fruit fly, Bactrocera tryoni (Diptera: Tephritidae)

BACKGROUND Raspberry ketone (RK) is highly attractive to sexually mature, but not immature, males of many Bactrocera species, including Queensland fruit fly (‘Qfly’, Bactrocera tryoni), and acts as a metabolic enhancer in a wide diversity of animals. We considered the possibility that, as a metaboli...

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Bibliographic Details
Published in:Pest management science 2017-08, Vol.73 (8), p.1764-1770
Main Authors: Akter, Humayra, Mendez, Vivian, Morelli, Renata, Pérez, Jeanneth, Taylor, Phillip W
Format: Article
Language:English
Subjects:
Age
Animals
Bactrocera tryoni
Butanones - pharmacology
Developmental stages
Feeding
Flies
Fruits
immature males
Insects
Ketones
Longevity
Longevity - drug effects
Male
Males
Mating
mating behaviour
Maturation
Metabolism
Pest control
pre‐release supplement
raspberry ketone
Sexual Behavior, Animal - drug effects
Sexual Maturation - drug effects
SIT
Sterilized organisms
Sugar
Tephritidae - drug effects
Tephritidae - physiology
Yeast
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Summary:BACKGROUND Raspberry ketone (RK) is highly attractive to sexually mature, but not immature, males of many Bactrocera species, including Queensland fruit fly (‘Qfly’, Bactrocera tryoni), and acts as a metabolic enhancer in a wide diversity of animals. We considered the possibility that, as a metabolic enhancer, RK in adult diet might accelerate sexual maturation of male Qflies. RESULTS Recently emerged adult Qfly males (0–24 h old) were exposed to RK‐treated food for 48 h and were then provided only sugar and water. Four doses of RK (1.25, 2.5, 3.75 and 5%) along with control (0%) were tested with two types of food: sugar alone and sugar mixed with yeast hydrolysate (3:1). For flies tested when 4–10 days old all RK doses increased mating probability of flies fed sugar mixed with yeast hydrolysate but did not show any effect on mating probability of flies fed only sugar. No effects of RK were found for flies tested when 10–30 days old for either diet group. There was no evidence that RK affected longevity at any of the doses tested. CONCLUSION Feeding of RK together with yeast hydrolysate to immature Qfly increases mating propensity at young ages and accordingly shows significant potential as a pre‐release supplement that might increase the proportion of released flies that attain sexual maturation in Sterile Insect Technique programmes. © 2017 Society of Chemical Industry
ISSN:1526-498X
1526-4998
DOI:10.1002/ps.4538