Scaling of anaerobic metabolism during exercise in the estuarine crocodile (Crocodylus porosus)

摘要: Abstract The allometry of anaerobic metabolism was examined in wild estuarine crocodiles ( Crocodylus porosus ) exercised to exhaustion during capture, with the aim identifying factors underlying higher capacity but possibly lower scope larger animals. Exercise time exhaustion, and concentrations lactate protons blood tail muscle, increased increasing body mass. Muscle glycogen, both before after exercise, also showed positive allometric scaling. intracellular pH buffering scaled negatively effects on activities muscle phosphorylase phosphofructokinase were independent It is proposed that may be limited by size glycogen reserves smaller glycolytic inhibition at values encountered crocodiles. Mean scope, activity decreased mass, while dehydrogenase Negative scaling relate changes predator-prey social interactions involve reduced dependence frequent bursts work