Colder is better: The differential effects of thermal acclimation on life history parameters in a parasitoid fly
Author
dc.contributor.author
Zamorano, Jorge
Author
dc.contributor.author
Bozinovic, Francisco
Author
dc.contributor.author
Veloso Iriarte, Claudio
Admission date
dc.date.accessioned
2018-05-14T17:37:50Z
Available date
dc.date.available
2018-05-14T17:37:50Z
Publication date
dc.date.issued
2017
Cita de ítem
dc.identifier.citation
Journal of Thermal Biology 68 (2017) 1–4
es_ES
Identifier
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http://dx.doi.org/10.1016/j.jtherbio.2017.03.011
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/147728
Abstract
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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.