Differential Response of Leafminer Flies <i>Liriomyza trifolii</i> (Burgess) and <i>Liriomyza sativae</i> (Blanchard) to Rapid Cold Hardening
Rapid cold hardening (RCH) is a rapid and critical adaption of insects to sudden temperature changes but is often overlooked or underestimated as a component of survival. Thus, interspecific comparisons of RCH are needed to predict how phenotypes will adapt to temperature variability. RCH not only e...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/33e17bbb37624ca58f56d9cbb5d5a101 |
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| Sumario: | Rapid cold hardening (RCH) is a rapid and critical adaption of insects to sudden temperature changes but is often overlooked or underestimated as a component of survival. Thus, interspecific comparisons of RCH are needed to predict how phenotypes will adapt to temperature variability. RCH not only enhances cold survival but also protects against non-lethal cold injury by preserving essential functions such as locomotion, reproduction, and energy balance. This study investigated the difference in basal cold tolerance and RCH capacity of <i>L</i>. <i>trifolii</i> and <i>L</i>. <i>sativae</i>. In both species, the cold tolerance of pupae was significantly enhanced after short-term exposure to moderately cold temperatures. The effect of RCH last for 4 h in <i>L. sativae</i> but only 2 h in <i>L. trifolii</i>. Interestingly, <i>L. trifolii</i> adults had a RCH response but <i>L. sativae</i> adults failed to acclimate. Short-term acclimation also lowered the supercooling point significantly in the pupae of both species. Based on these results, we propose a hypothesis that these differences will eventually affect their competition in the context of climate change. This study also provides the basis for future metabolomic and transcriptomic studies that may ultimately uncover the underlying mechanisms of RCH and interspecific competition between <i>L</i>. <i>trifolii</i> and <i>L</i>. <i>sativae</i>. |
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