Physiological ecology and vulnerability to climate change of a microendemic, habitat-specialist lizard in a tropical dry forest of Mexico

Muñoz-Nolasco, Francisco Javier; Arenas-Moreno, Diego M.; Gandarilla-Aizpuro, Fabiola J.; Moral, Adán Bautista-del; Santos-Bibiano, Rufino; Miles, Donald B.; Cruz, Fausto R. Méndez–de la

doi:10.1016/j.ecochg.2023.100066

Cited by 1 publication

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“…Studies on the thermal adaptation in lizards have also concluded that widely distributed species are more plastic than narrowly distributed species [84,85]. The vulnerability shown by micro-endemic species in response to climate change has been mentioned in several articles [86][87][88]. During the process of species adaptation to climate change, the mechanisms are specific, such as altering organ size and mitochondrial, proteomic, and metabolomic regulation [84].…”

Section: Differential Gene Expression Of Different Lizards In Regions...mentioning

confidence: 99%

Differential Mitochondrial Genome Expression of Three Sympatric Lizards in Response to Low-Temperature Stress

He,

Zhan,

Meng

et al. 2024

Animals

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Ecological factors related to climate extremes have a significant influence on the adaptability of organisms, especially for ectotherms such as reptiles that are sensitive to temperature change. Climate extremes can seriously affect the survival and internal physiology of lizards, sometimes even resulting in the loss of local populations or even complete extinction. Indeed, studies have shown that the expression levels of the nuclear genes and mitochondrial genomes of reptiles change under low-temperature stress. At present, the temperature adaptability of reptiles has rarely been studied at the mitochondrial genome level. In the present study, the mitochondrial genomes of three species of lizards, Calotes versicolor, Ateuchosaurus chinensis, and Hemidactylus bowringii, which live in regions of sympatry, were sequenced. We used RT-qPCR to explore the level of mitochondrial gene expression under low-temperature stress, as compared to a control temperature. Among the 13 protein-coding genes (PCGs), the steady-state transcript levels of ND4L, ND1, ATP6, and COII were reduced to levels of 0.61 ± 0.06, 0.50 ± 0.08, 0.44 ± 0.16, and 0.41 ± 0.09 in C. versicolor, respectively, compared with controls. The transcript levels of the ND3 and ND6 genes fell to levels of just 0.72 ± 0.05 and 0.67 ± 0.05 in H. bowringii, compared with controls. However, the transcript levels of ND3, ND5, ND6, ATP6, ATP8, Cytb, and COIII genes increased to 1.97 ± 0.15, 2.94 ± 0.43, 1.66 ± 0.07, 1.59 ± 0.17, 1.46 ± 0.04, 1.70 ± 0.16, and 1.83 ± 0.07 in A. chinensis. Therefore, the differences in mitochondrial gene expression may be internally related to the adaptative strategy of the three species under low-temperature stress, indicating that low-temperature environments have a greater impact on A. chinensis, with a small distribution area. In extreme environments, the regulatory trend of mitochondrial gene expression in reptiles is associated with their ability to adapt to extreme climates, which means differential mitochondrial genome expression can be used to explore the response of different lizards in the same region to low temperatures. Our experiment aims to provide one new research method to evaluate the potential extinction of reptile species in warm winter climates.

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Section: Differential Gene Expression Of Different Lizards In Regions...mentioning

confidence: 99%

Differential Mitochondrial Genome Expression of Three Sympatric Lizards in Response to Low-Temperature Stress

He,

Zhan,

Meng

et al. 2024

Animals

View full text Add to dashboard Cite

show abstract

Physiological ecology and vulnerability to climate change of a microendemic, habitat-specialist lizard in a tropical dry forest of Mexico

Cited by 1 publication

References 65 publications

Differential Mitochondrial Genome Expression of Three Sympatric Lizards in Response to Low-Temperature Stress

Differential Mitochondrial Genome Expression of Three Sympatric Lizards in Response to Low-Temperature Stress

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