AI Article Synopsis
- Temperature increases impact the physiology and behavior of pro-ovigenic parasitoids, affecting how they allocate energy and resources.
- Most parasitoid adults can't produce new fats, relying on lipids stored from their larval stage to influence their lifespan and ability to reproduce.
- As temperatures rise, these parasitoids tend to have fewer initial eggs and allocate more lipids for survival, leading to a decrease in overall reproductive success.
Article Abstract
Temperature increase can affect physiological and behavioural constraints. Here, we use a stochastic dynamic modelling approach to predict changes in physiological adaptations and behaviour in response to temperature increase of pro-ovigenic parasitoids (i.e., parasitoids that mature all of their eggs before emergence). Adults of most species of parasitoids, are not capable of de novo lipogenesis. The allocation of lipids accumulated during the larval stage determines adult lifespan and fecundity. In females, lipids can be allocated either to egg production or to adult lipid reserves leading to a trade-off between fecundity and lifespan. Our results show that selection by an increase in ambient temperature, favours a smaller initial egg load and a larger amount of lipids for maintenance. The cost of habitat exploitation increases with temperature because the rate of lipid consumption increases. Hence, lifetime reproductive success decreases. When the optimal activity rate shifts to match the higher ambient temperature, these effects become less pronounced.
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| http://dx.doi.org/10.1016/j.jtbi.2012.06.005 | DOI Listing |
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