Colder is better: The differential effects of thermal acclimation on life history parameters in a parasitoid fly

In this article, we assessed the effect of the rearing temperature on life history traits of the poorly known fly Phasmovora phasmophagae (Diptera: Tachinidae), a parasitoid of Agathemera crassa (Phasmatodea: Agathemeridae) in order to: i) test the effect of ambient temperature on life history trait...

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Bibliographic Details
Published in:Journal of thermal biology 2017-08, Vol.68 (Pt A), p.1-4
Main Authors: Zamorano, Jorge, Bozinovic, Francisco, Veloso, Claudio
Format: Article
Language:English
Subjects:
Acclimation
Acclimatization - physiology
Agathemera crassa
Ambient temperature
Andes range
Animals
Body mass
Body temperature
Breeding of animals
Diptera - physiology
Female
Host-parasite interactions
Insecticides
Life Cycle Stages - physiology
Life history
Male
Ovaries
Parasitoids
Phasmovora phasmophagae
Random Allocation
Reproduction - physiology
Studies
Survival
Survival Analysis
Temperature
Temperature effects
Time Factors
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Summary:In this article, we assessed the effect of the rearing temperature on life history traits of the poorly known fly Phasmovora phasmophagae (Diptera: Tachinidae), a parasitoid of Agathemera crassa (Phasmatodea: Agathemeridae) in order to: i) test the effect of ambient temperature on life history traits and ii) assess the potential trade-off between reproduction and survival. Parasitoids were obtained from a population of hosts located in the Andes range of central Chile. Upon emergence from the host parasitoids were randomly allocated to three thermal treatments (15°C, 22.5°C and 30°C) and several life history traits were measured. We recorded higher survival at 15°C and 22.5°C and a lower survival at 30°C.We found differences for both body mass and head width among thermal treatments. In females, body mass was higher at 15°C than at 30°C. An effect of breeding temperature and sex was observed only for developmental time. In addition, males reared at different temperatures during the pupal stage and held as adults at 22.5°C, exhibited no differences in longevity between treatments. A significant effect of temperature on the mass of ovaries and lipid was recorded in females. These patterns suggest a trade-off between reproduction and survival. Overall, data seem to support the “colder is better” hypothesis, because Andean parasitoid P. phasmophagae inhabiting and experimentally reared in colder environments have a higher performance in all environments.
ISSN:0306-4565
1879-0992
DOI:10.1016/j.jtherbio.2017.03.011