Oviposition behavior of Grapholita molesta Busck (Lepidoptera: Tortricidae) at different temperatures

Oviposition behavior of Grapholita molesta Busck (Lepidoptera: Tortricidae) at different temperatures

Cultivation of temperate-climate fruits is economically important for Brazil. Grapholita molesta Busck is a pest that causes damage to apples, peaches, plums, and pears growing in different micro-regions of southern Brazil, and understanding its reproductive behavior is essential to develop control...

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Bibliographic Details
Published in:Neotropical entomology Vol. 40; no. 4; pp. 415 - 420
Main Authors: Silva, E.D.B da, Kuhn, T.M.A, Monteiro, L.B
Format: Journal Article
Language:English
Published: Netherlands Entomological Society of Brazil 01-07-2011
Sociedade Entomológica do Brasil
Subjects:
adults
Animals
Behavior, Animal - physiology
containers
death
eggs
ENTOMOLOGY
females
fruits
Grapholita molesta
Lepidoptera - anatomy & histology
oviposition
Oviposition - physiology
pests
plastics
reproductive behavior
Temperature
Apple tree
oriental fruit moth
pre-oviposition period
fecundity
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Summary:Cultivation of temperate-climate fruits is economically important for Brazil. Grapholita molesta Busck is a pest that causes damage to apples, peaches, plums, and pears growing in different micro-regions of southern Brazil, and understanding its reproductive behavior is essential to develop control strategies. The objective of this study was to ascertain the influence of different temperatures (13, 16, 19, 22, and 25ºC) on the oviposition behavior of G. molesta. Females of G. molesta were placed in individual plastic containers, and the pre-oviposition period and the number of eggs laid were assessed until adult death. Temperature influenced the pre-oviposition period, and females kept at 22º were the first to lay their eggs. Oviposition occurred over a longer period of time at 13ºC than at the higher temperatures. The highest total number of eggs was obtained at 19ºC, with the mean daily oviposition being directly proportional to the temperature. There was a negative interaction between the pre-oviposition period and the total number of eggs laid by females. The most suitable temperature for oviposition of G. molesta was 19ºC.
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content type line 23
ISSN:1519-566X
1678-8052
1678-8052
DOI:10.1590/S1519-566X2011000400001