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. 2012 Dec 12:3:465.
doi: 10.3389/fphys.2012.00465. eCollection 2012.

The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae)

Pol Chanthy  1 , Robert J Martin, Robin V Gunning, Nigel R Andrew
Affiliations

The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae)

Pol Chanthy et al. Front Physiol. .

Abstract

According to geographical distribution, Nezara viridula (Heteroptera: Pentatomidae) can be found across tropical, subtropical, and temperate regions and this pattern is assumed to reflect differences in thermal adaptation, particularly in cold tolerance. Here the lethal temperature (LT) and critical thermal limits (CTL) (thermal tolerance) are examined for N. viridula. The upper LT for N. viridula at two contrasting climate locations (Breeza and Grafton, New South Wales, Australia) was 40.3°C with 20% survival under the stress of high temperature. The lower LT did not differ between these two populations and was -8.0°C with 20% survival under low temperature stress. Survival of N. viridula increased after acclimation at high temperature for 7 days. In contrast, when acclimated at lower temperatures (10 and 15°C), survival of Breeza and Grafton N. viridula was lower than 20% at -8.0°C. Control-reared N. viridula adults (25°C) had a mean CT(MinOnset) (cold stupor) of 1.3 ± 2.1°C and a mean CT(Max) (heat coma) of 45.9 ± 0.9°C. After 7 days of acclimation at 10, 20, 30, or 35°C, N. viridula adults exhibited a 1°C change in CT(Max) and a ~1.5°C change in CT(MinOnset). CT(Max) and CT(MinOnset) of Breeza and Grafton N. viridula populations did not differ across acclimation temperatures. These results suggest that short-term temperature acclimation is more important than provenance for determining LTs and CTL in N. viridula.

Keywords: Nezara viridula; acclimation temperature; critical thermal limits; lethal temperature; thermal tolerance.

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Figures

Figure 1
Figure 1
Upper and lower lethal temperatures (ULT and LLT) of Nezara viridula (L.) populations from Breeza (A and C) and Grafton (B and D) for the high and low temperature (the distribution of dots are represented raw data).
Figure 2
Figure 2
The effects of acclimation temperature on the upper and lower lethal temperature of Nezara viridula (L.) population from Breeza (A and C) and Grafton (B and D) (raw data omitted for clarity).
Figure 3
Figure 3
Ten-year moving averages for number of days per year exceeding 40°C based on historical temperature (1950–2008) at Breeza and Grafton.
See this image and copyright information in PMC

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References

    1. Ayrinhac A., Debat V., Gibert P., Kister A.-G., Legout H., Moreteau B., et al. (2004). Cold adaptation in geographical populations of Drosophila melanogaster: phenotypic plasticity is more important than genetic variability. Funct. Ecol. 18, 700–706
    1. Berrigan D., Hoffmann A. A. (1998). Correlations between measures of heat resistance and acclimation in two species of Drosophila and their hybrids. Biol. J. Linn. Soc. 64, 449–462
    1. BOM. (2011). Climate Data Online, Climate Statistics for Australian Locations (Monthy Climate Statistic). Bureau of Meteorology, Australian Government. Available online at: http://www.bom.gov.au/climate/averages/tables/ [Accessed 16 March 2011].
    1. BOM. (2012). Climate Data Online, Climate Statistics for Australian Locations (Monthy Climate Statistic). Bureau of Meteorology, Australian Government. (Online). [Accessed 13 August 2012].
    1. Carrillo M. A., Cannon C. A., Wilcke W. F., Morey R. V., Kaliyan N., Hutchison W. D. (2005). Relationship between supercooling point and mortality at low temperatures in indianmael moth (Lepidoptera: Pyralidae). J. Econ. Entomol. 98, 618–625 - PubMed

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