Journal Article

Temperature-Dependent Development of Aleyrodes proletella (Homoptera: Aleyrodidae) on Two Cultivars of Broccoli Under Constant Temperatures

Daniel Alonso, Ana Azahara Gómez, Gloria Nombela and Mariano Muñiz

in Environmental Entomology

Published on behalf of Entomological Society of America

Volume 38, issue 1, pages 11-17
Published in print February 2009 | ISSN: 0046-225X
Published online August 2014 | e-ISSN: 1938-2936 | DOI: https://dx.doi.org/10.1603/022.038.0103
Temperature-Dependent Development of Aleyrodes proletella (Homoptera: Aleyrodidae) on Two Cultivars of Broccoli Under Constant Temperatures

Show Summary Details

Preview

Laboratory experiments were conducted to estimate developmental rates and nymphal survival of Aleyrodes proletella Linnaeus (Homoptera: Aleyrodidae) on two broccoli Brassica oleracea L. variety italica Plenck cultivars (Marathon and Agripa) at eight constant temperatures (16, 18, 20, 22, 24, 26, 28, and 30°C). The times required to complete development of egg and first instar decreased with increasing temperature, but the developmental times of second, third, fourth instars, all instars, and egg-adult period were greater at 30°C than at 28°C. The relationships between developmental rate of A. proletella and temperature were slightly influenced by broccoli cultivar. The optimal temperatures and thermal constant as well as the lower and upper thresholds of development for all immature stages were estimated by fitting the observed developmental rates versus temperature with a nonlinear model and two linear models. For all stages, graphs obtained by plotting the developmental rates against temperature could be described by the modification two of the Logan′s model. Overall, developmental times for immature stages and egg-adult periods were similar on both Agripa and Marathon cultivars. The most favorable temperature range for nymphal development seemed to be 28–29 (second and third instars) and 31–33°C (fourth instar). Mean generation times (egg-adult) ranged from 19 d (’Marathon’ and ’Agripa’) at 28°C to 47 (’Marathon’) and 46 d (’Agripa’) at 16°C.

Keywords: phenological models; development; nymphal survival; Brassica oleracea L. variety italica Plenck

Journal Article.  4087 words.  Illustrated.

Subjects: Entomology

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content. subscribe or login to access all content.