Genotype by temperature interactions in the metabolic rate of the Glanville fritillary butterfly
Genotype by temperature interactions in the metabolic rate of the Glanville fritillary butterfly
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DOI：
10.1242/jeb.034132
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发表时间：
2010-04-01
影响因子：
2.8
通讯作者：
Niitepold, Kristjan
中科院分区：
文献类型：
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作者：
Niitepold, Kristjan
代谢率是一个高度可塑的特征。在这里，我研究了影响格兰维尔贝母蝴蝶 (Melitaea cinxia) 蛹、休息和飞行成虫代谢率的因素。体重和温度对蛹和静息成虫的代谢率具有一致的积极影响，但对飞行成虫则不然。一天中的时间也存在一致的非线性效应，这种效应在蛹中最强，在飞行的成虫中最弱。飞行代谢率受到磷酸葡萄糖异构酶（Pgi）基因型和温度之间相互作用的强烈影响。在广泛的测量温度范围内，Pgi 中单核苷酸多态性 (SNP) 的杂合个体在飞行中具有更高的峰值代谢率，但在高温下纯合个体表现更好。两种基因型的静息代谢率没有差异，这表明杂合子不会为其更高的飞行能力付出额外的能量成本。与质量无关的静息和飞行代谢率在个体水平上至多是微弱相关的，因此，与许多脊椎动物不同，静息代谢率不能作为这种蝴蝶代谢能力的有用替代品。
Metabolic rate is a highly plastic trait. Here I examine factors that influence the metabolic rate of the Glanville fritillary butterfly (Melitaea cinxia) in pupae and resting and flying adults. Body mass and temperature had consistent positive effects on metabolic rate in pupae and resting adults but not in flying adults. There was also a consistent nonlinear effect of the time of the day, which was strongest in pupae and weakest in flying adults. Flight metabolic rate was strongly affected by an interaction between the phosphoglucose isomerase (Pgi) genotype and temperature. Over a broad range of measurement temperatures, heterozygous individuals at a single nucleotide polymorphism (SNP) in Pgi had higher peak metabolic rate in flight, but at high temperatures homozygous individuals performed better. The two genotypes did not differ in resting metabolic rate, suggesting that the heterozygotes do not pay an additional energetic cost for their higher flight capacity. Mass-independent resting and flight metabolic rates were at best weakly correlated at the individual level, and therefore, unlike in many vertebrates, resting metabolic rate does not serve as a useful surrogate of the metabolic capacity of this butterfly.