Atanasov Atanas Todorov
Department of Physics and Biophysics, Medical Faculty, Thracian University-Stara Zagora, 6000 Stara Zagora, 11 Armeiska Str., Bulgaria.
Biosystems. 2007 Jul-Aug;90(1):224-33. doi: 10.1016/j.biosystems.2006.08.006. Epub 2006 Aug 23.
The aim of this study is to establish and calculate the exact allometric relationship between the total metabolic energy per life span and the body mass in a wide range of mammals with about six orders of magnitude variation of the body mass of animals. The study shows that it exists a linear relationship between the total metabolic energy per life span PT(ls) (kJ) and the body mass M (kg) of 95 mammals (3 monotremes, Subclass Prototheria, 16 marsupialis (Subclass Theria, Infraclass Metatheria) and 76 placentals (Subclass Theria, Infraclass Eutheria)) from type: PT(ls)=A(ls)(+)M(1.0511), where P (kJ/day) is the basal rate of metabolism and T(ls) (days) is the mean life span of animals. The linear coefficient A(ls)(+)=7.158x10(5) kJ/kg is the total metabolic energy, exhausted during the life span per 1 kg body mass of the animals. The mean values of the total metabolic energy per life span, per unit body mass (A(ls)) for orders from Subclass Prototheria and Theria (Infraclass Metatheria) and orders Xenarthra, Pholidota, Soricomorpha, Rodentia (Infraclass Eutheria) varied negligible in interval (4.656-5.80)x10(5) kJ/kg. The coefficient A(ls) grows from (7.68-8.36)x10(5) kJ/kg in Lagomorpha and Artiodactyla (Eutheria) to (10.58-12.64)x10(5) kJ/kg in orders Carnivora, Pinnipeda and Chiroptera (Eutheria). A(ls) grows maximum to 18.5x10(5) kJ/kg in Primates. Thus, the values of coefficient A(ls) differ maximum four-fold in all orders. Across the all species the values of A(ls) are changes about one order of magnitude. Consequently, our survey shows that the changes of the body mass, basal metabolic rate and the life span of animals are three mutually related parameters, so that the product A(ls)=(PT(ls))/M remains relatively constant in comparison to 1 million fold difference in body mass and total metabolic energy per life span between mammals.
本研究的目的是在体重相差约六个数量级的广泛哺乳动物范围内，建立并计算每个寿命期的总代谢能量与体重之间的确切异速生长关系。研究表明，95种哺乳动物（3种单孔目动物，原兽亚纲；16种有袋动物，兽亚纲，后兽下纲；76种胎盘类动物，兽亚纲，真兽下纲）的每个寿命期的总代谢能量PT(ls)（千焦）与体重M（千克）之间存在线性关系：PT(ls)=A(ls)(+)M(1.0511)，其中P（千焦/天）是基础代谢率，T(ls)（天）是动物的平均寿命。线性系数A(ls)(+)=7.158x10(5)千焦/千克是动物每1千克体重在寿命期内消耗的总代谢能量。原兽亚纲和兽亚纲（后兽下纲）各目以及异关节目、鳞甲目、鼩形目、啮齿目（真兽下纲）的单位体重（A(ls)）的每个寿命期的总代谢能量平均值在(4.656 - 5.�0)x10(5)千焦/千克的区间内变化可忽略不计。系数A(ls)从兔形目和偶蹄目（真兽类）的(7.68 - 8.36)x10(5)千焦/千克增长到食肉目、鳍脚目和翼手目（真兽类）的(10.58 - 12.64)x10(5)千焦/千克。在灵长目中，A(ls)最大增长到18.5x10(5)千焦/千克。因此，所有目中系数A(ls)的值最大相差四倍。在所有物种中，A(ls)的值变化约一个数量级。因此，我们的研究表明，动物的体重、基础代谢率和寿命的变化是三个相互关联的参数，所以与哺乳动物体重和每个寿命期的总代谢能量相差100万倍相比，乘积A(ls)=(PT(ls))/M保持相对恒定。
