Ion And Energetic Contents Level In Haemolymph And Metabolism Rates Of Deserts Beetles During Dehydration And Hydration

Deetles from Guerbantunggut Desert were chosen as research material, in order to explain the relation between diet and habitat with the mechanisms of water balance, by determine water-loss and compared with oasis beetles. The primary factors to regulate water balance were estimated by ion and energetic contents in haemolymph and the rates of metabolism of deserts beetles, during dehydration and hydration.The results show that the rates of water loss of polyphagous beetles are lower than herbivorous and carnivorous beetles. There are characters of low water-loss, low metabolism, low mortality and high body water in desert beetles. Herbivorous beetles could increase body water and livability by feeding, conspicuously. There is a difference adaptation to temperature between beetles at different seasons. Beetles in spring showed an negative correlation with temperature, so that the population was broken down because they could not adapt high temperature. There is also a difference adaptation to temperature between the same beetles at different seasons. High temperature makes them take up the capital of reservoir of body water and decrease water-loss. So environment temperature is also an factor to scale the capital of maintain water balance.The sodium concentration were higher. During dehydration and hydration, the change of sodium concentration were conspicuous. Sodium may be concerned with the osmosis between extracellular and intracellular. potassium concentration were not significant, that may be concerned with the absorbability the Malpighian tubes and rectum. Amino acid were concerned with osmoregulation. The concentration of trehalose were higher than glucose in five deserts beetles. During dehydration of the deserts tenebrionid, sugar is very important, which were concerned with metabolism and product oxidation water. Glycerol were not the primary factor for metabolism during dehydration, that may be concerned with metabolism when sugar were depleted. The change of sodium, potassium, sugar and glycerol of desert herbivorous beetles were decreased during dehydration, but not conspicuously. The results suggest that the utilization of ions in herbivorous beetles should be lower than polyphagous beetles, and the sugar and glycerol be participated in metabolism at the same time. The decrease of the rates of metabolism may be concerned with the role to decrease the water.loss by respiration...