The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae)
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 and critical therm...
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| Format: | Article |
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Frontiers Media S.A.
2012-12-01
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| Series: | Frontiers in Physiology |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fphys.2012.00465/full |
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| author | Pol eChanthy Pol eChanthy Robert J Martin Robert J Martin Robin V Gunning Nigel eAndrew |
| author_facet | Pol eChanthy Pol eChanthy Robert J Martin Robert J Martin Robin V Gunning Nigel eAndrew |
| author_sort | Pol eChanthy |
| collection | DOAJ |
| description | 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 and critical thermal limits (thermal tolerance) are examined for N. viridula. The upper lethal temperature for N. viridula at two contrasting climate locations (Breeza and Grafton, New South Wales, Australia) was 40.3ºC with 20% survival under the stress of high temperature. The lower lethal temperature did not differ between these two populations and was -8.0ºC with 20% survival under low temperature stress. Survival of N. viridula increased after acclimation at high temperature for seven days. In contrast, when acclimated at lower temperatures (10 and 15ºC), survival of Breeza and Grafton N. viridula was lower than 20% at -8.0ºC.Control-reared N. viridula adults (25ºC) had a mean CTMinOnset (cold stupor) of 1.3 ± 2.1ºC and a mean CTMax (heat coma) of 45.9 ± 0.9ºC. After 7 days of acclimation at 10, 20, 30, or 35ºC, N. viridula adults exhibited a 1ºC change in CTMax and a ~ 1.5ºC change in CTMinOnset. CTMax and CTMinOnset 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 lethal temperatures and critical thermal limits in N. viridula. |
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| language | English |
| last_indexed | 2024-04-13T16:45:34Z |
| publishDate | 2012-12-01 |
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| spelling | doaj.art-69e0feb2721942eab99a377b5323e1412022-12-22T02:39:05ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2012-12-01310.3389/fphys.2012.0046539418The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae)Pol eChanthy0Pol eChanthy1Robert J Martin2Robert J Martin3Robin V Gunning4Nigel eAndrew5University of New EnglandCambodian Agricultural Research and Development Institute (CARDI),Agricultural Systems Research Cambodia Co. Ltd.Maddox Jolie-Pitt Foundation (MJP),NSW Department of Primary IndustriesUniversity of New EnglandAccording 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 and critical thermal limits (thermal tolerance) are examined for N. viridula. The upper lethal temperature for N. viridula at two contrasting climate locations (Breeza and Grafton, New South Wales, Australia) was 40.3ºC with 20% survival under the stress of high temperature. The lower lethal temperature did not differ between these two populations and was -8.0ºC with 20% survival under low temperature stress. Survival of N. viridula increased after acclimation at high temperature for seven days. In contrast, when acclimated at lower temperatures (10 and 15ºC), survival of Breeza and Grafton N. viridula was lower than 20% at -8.0ºC.Control-reared N. viridula adults (25ºC) had a mean CTMinOnset (cold stupor) of 1.3 ± 2.1ºC and a mean CTMax (heat coma) of 45.9 ± 0.9ºC. After 7 days of acclimation at 10, 20, 30, or 35ºC, N. viridula adults exhibited a 1ºC change in CTMax and a ~ 1.5ºC change in CTMinOnset. CTMax and CTMinOnset 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 lethal temperatures and critical thermal limits in N. viridula.http://journal.frontiersin.org/Journal/10.3389/fphys.2012.00465/fullthermal toleranceNezara viridulalethal temperaturecritical thermal limitsacclimation temperature |
| spellingShingle | Pol eChanthy Pol eChanthy Robert J Martin Robert J Martin Robin V Gunning Nigel eAndrew The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae) Frontiers in Physiology thermal tolerance Nezara viridula lethal temperature critical thermal limits acclimation temperature |
| title | The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae) |
| title_full | The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae) |
| title_fullStr | The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae) |
| title_full_unstemmed | The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae) |
| title_short | The effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug, Nezara viridula (L.) (Hemiptera: Pentatomidae) |
| title_sort | effects of thermal acclimation on lethal temperatures and critical thermal limits in the green vegetable bug nezara viridula l hemiptera pentatomidae |
| topic | thermal tolerance Nezara viridula lethal temperature critical thermal limits acclimation temperature |
| url | http://journal.frontiersin.org/Journal/10.3389/fphys.2012.00465/full |
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