Rushton Stephen P, Hassall Mark
School of Environmental Sciences, University of East Anglia, NR4 7TJ, Norwich, England.
Oecologia. 1983 Mar;57(1-2):257-261. doi: 10.1007/BF00379587.
Growth, reproduction, and survivorship of Armadillidium vulgare have been observed when laboratory populations were fed experimental diets consisting of leaves from different species of plant in different states of decay.Growth and fecundity were highest when the foods consisted of standing dead dicotyledonous plant leaves. Feeding on monocotyledonous material caused increased mortality as well as reducing both growth rates and reproductive output to very low levels. When the dicotyledonous material was extensively decayed before feeding, growth rates and survivorship decreased but this treatment did not significantly alter the results for monocotyledonous foods.Growth and survivorship rates were not significantly correlated with the total nitrogen content of the food but appeared to be related to the extent to which it could be digested and absorbed across the gut wall.Some of the implications of these results for the dynamics of field populations of terrestrial isopods are discussed.
当实验室种群被喂食由不同腐烂状态的不同植物种类的叶子组成的实验性食物时，对普通鼠妇的生长、繁殖和存活率进行了观察。当食物由直立死亡的双子叶植物叶子组成时，生长和繁殖力最高。以单子叶植物材料为食会导致死亡率增加，同时将生长速率和繁殖产量都降低到非常低的水平。当双子叶植物材料在喂食前已大量腐烂时，生长速率和存活率下降，但这种处理并未显著改变单子叶植物食物的结果。生长和存活率与食物的总氮含量没有显著相关性，但似乎与食物能够被消化并穿过肠壁吸收的程度有关。讨论了这些结果对陆生等足类野外种群动态的一些影响。
