How to translate text using browser tools
1 June 2007 Life History Traits of Pseudasphondylia rokuharensis (Diptera: Cecidomyiidae) Affecting Emergence of Adults and Synchronization with Host Plant Phenology
Makoto Tokuda, Junichi Yukawa, Katsuo Gôukon
Author Affiliations +
Abstract

To identify adaptive strategies of gall-inducing cecidomyiids, we studied the life history traits of Pseudasphondylia rokuharensis (Diptera: Cecidomyiidae), a univoltine species inducing fruit galls on a deciduous shrub, Viburnum dilatatum. Although univoltine gall midges that are associated with trees or shrubs are usually difficult to rear from immature stages under artificial conditions, we successfully reared P. rokuharensis from first instar to adult. Mature larvae entered diapause in autumn, and the diapause terminated after low temperature treatment (4 mo of incubation at 5°C). The adults emerged within a shorter period of time than those without low temperature treatment. Thus, the diapause provides better synchronization of adult emergence in the spring. Because adults live for only a few days, this synchronization improves the chances of adults finding a mate. This is the first report on the mechanism of larval diapause termination for univoltine and tree- or shrub-associated gall midges. The numbers of days needed for adults to emerge under laboratory conditions after low temperature incubation were significantly different between two different localities. This result might suggest the possible existence of ecoclines in their life history parameters.

Makoto Tokuda, Junichi Yukawa, and Katsuo Gôukon "Life History Traits of Pseudasphondylia rokuharensis (Diptera: Cecidomyiidae) Affecting Emergence of Adults and Synchronization with Host Plant Phenology," Environmental Entomology 36(3), 518-523, (1 June 2007). https://doi.org/10.1603/0046-225X(2007)36[518:LHTOPR]2.0.CO;2
Received: 10 April 2006; Accepted: 9 March 2007; Published: 1 June 2007
JOURNAL ARTICLE
6 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

KEYWORDS
adult emergence
diapause
gall midge
laboratory rearing
photoperiod
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top