The effect of rearing temperature on development, body size, energetics and fecundity of the diamondback moth

Garrad, R., Booth, D. T. and Furlong, M.,J. (2016) The effect of rearing temperature on development, body size, energetics and fecundity of the diamondback moth. Bulletin of Entomological Research, 106 2: 175-181. doi:10.1017/S000748531500098X


Author Garrad, R.
Booth, D. T.
Furlong, M.,J.
Title The effect of rearing temperature on development, body size, energetics and fecundity of the diamondback moth
Journal name Bulletin of Entomological Research   Check publisher's open access policy
ISSN 1475-2670
0007-4853
Publication date 2016-04
Year available 2015
Sub-type Article (original research)
DOI 10.1017/S000748531500098X
Open Access Status Not Open Access
Volume 106
Issue 2
Start page 175
End page 181
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Cambridge University Press
Collection year 2016
Language eng
Formatted abstract
Temperature is arguably the most important abiotic factor influencing the life history of ectotherms. It limits survival and affects all physiological and metabolic processes, including energy and nutrient procurement and processing, development and growth rates, locomotion ability and ultimately reproductive success. However, the influence of temperature on the energetic cost of development has not been thoroughly investigated. We show that in the diamondback moth [Plutella xylostella L. (Lepidoptera: Plutellidae)] rearing temperature (range10–30°C) affected growth and development rates, the energetic cost of development and fecundity. Rearing at lower temperatures increased development times and slowed growth rate, but resulted in larger adult mass. Fecundity was lowest at 10°C, highest at 15°C and intermediate at temperatures of 20°C and above. At a given rearing temperature fecundity was correlated with pupal mass and most eggs were laid on the first day of oviposition, there was no correlation between total eggs laid and adult longevity. The highest production cost was incurred at 10°C; this decreased with increasing temperature, was minimized in the range 20–25°C, and then increased again at 30°C. These minimized production costs occurred at temperatures close to the intrinsic optimum temperature for this species and may reflect the rearing temperature for optimal fitness. Thus at sub-optimal temperatures greater food resources are required during the development period. Predicted increased temperatures at the margins of the current core distribution of P. xylostella could ameliorate current seasonal effects on fecundity, thereby increasing the probability of winter survival leading to more resilient range expansion and an increased probability of pest outbreaks.
Keyword Production costs
Ectotherms
Insects
Longevity
Plutella xylostella
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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