Delayed mating reduces reproductive output of female European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae)

Virgin females of Lobesia botrana Denis & Schiffermüller were mated at ages of 1, 3, 5, 8, 12 and 16 days and the effect of mating delay on reproductive output assessed. Delayed mating did not affect female mating success but fertilization was reduced in 16-day-old females. Increased mating dela...

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Bibliographic Details
Published in:Bulletin of entomological research 2002-06, Vol.92 (3), p.241-249
Main Authors: Torres-Vila, L.M., Rodríguez-Molina, M.C., Stockel, J.
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal reproduction
Animal, plant and microbial ecology
Animals
Biological and medical sciences
Body weight
Butterflies & moths
Demecology
Eggs
Fecundity
Female
Females
Fertility
Fundamental and applied biological sciences. Psychology
Longevity
Male
Males
Moths - physiology
Oviposition - physiology
Pheromones
Protozoa. Invertebrata
Reproduction - physiology
Sexual Behavior, Animal - physiology
Success
Vitis
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Summary:Virgin females of Lobesia botrana Denis & Schiffermüller were mated at ages of 1, 3, 5, 8, 12 and 16 days and the effect of mating delay on reproductive output assessed. Delayed mating did not affect female mating success but fertilization was reduced in 16-day-old females. Increased mating delays substantially affected daily oviposition pattern and resulted in a significant reduction of both fecundity and fertility, so that mean number of viable eggs laid decreased from 150 to 22 in 1- and 16-day-old mated females, respectively. Heavier females were more constrained than lighter ones by mating delays and female reproductive efficiency (no. viable eggs/female body weight) was also significantly reduced. Female longevity significantly increased and oviposition period gradually declined with mating delay. The number of viable eggs was positively correlated with both female weight and oviposition period; female longevity and female weight were also significantly correlated. However, the significance of these correlations declined with increased mating delay. Results overall indicated that mating delay drastically reduces female L. botrana reproductive output. The implications of delayed mating of females are discussed from an ecological perspective in relation to L. botrana control using mating disruption.
ISSN:0007-4853
1475-2670
DOI:10.1079/BER2002155