Intraspecific scaling and early life history determine the cost of free-flight in a large beetle(Batocera rufomaculata)  

作　　者：Tomer Urcai Eran Levin Eran Gefen Gal Ribak 

机构地区：[1]Faculty of Life Sciences,School of Zoology,Tel Aviv University,Tel Aviv,Israel [2]Steinhardt Museum of Natural History,Israel National Center for Biodiversity Studies,Tel Aviv,Israel [3]Department of Biology,University of Haifa-Oranim,Kiryat Tivon,Israel

出　　处：《Insect Science》2024年第2期524-532,共9页昆虫科学（英文版）

摘　　要：The scaling of the energetic cost of locomotion with body mass is well documented at the interspecific level.However,methodological restrictions limit our understanding of the scaling of flight metabolic rate(MR)in free-flying insects.This is particularly true at the intraspecific level,where variation in body mass and flight energetics may have direct consequences for the fitness of an individual.We applied a 13C stable isotope method to investigate the scaling of MR with body mass during free-flight in the beetle Batocera rufomaculata.This species exhibits large intraspecific variation in adult body mass as a consequence of the environmental conditions during larval growth.We show that the flight-MR scales with body mass to the power of 0.57,with smaller conspecifics possessing up to 2.3 fold higher mass-specific flight MR than larger ones.Whereas the scaling exponent of free-flight MR was found to be like that determined for tethered-flight,the energy expenditure during free-flight was more than 2.7 fold higher than for tethered-flight.The metabolic cost of flight should therefore be studied under free-flight conditions,a requirement now enabled by the 13C technique described herein for insect flight.

关 键 词：ALLOMETRY body mass COLEOPTERA FREE-FLIGHT insect flight stable carbon isotope tethered-flight 

分 类 号：Q96[生物学—昆虫学]