Steinberger Yosef, Grossman Shlomo, Dubinsky Zvy
Department of Life Sciences, Bar-Ilan Univ., Ramat-Gan, Israel.
Desert Research Institute, Ben-Gurion Univ of the Negey, Sde-Boker Campus, Negev, Israel.
Oecologia. 1981 Aug;50(1):103-108. doi: 10.1007/BF00378801.
Between 1976-1978, we studied the ecology of the Sphincterochila prophetarum, the most common snail, on stony slopes in Northern Negev. Energy and water flow determinations were made at the individual and population levels on a field observation basis and metabolic data were derived from laboratory simulations.The snails are active during 5-7% of the time during the year, while the remaining 95% of the time, the snails are in aestivation under stones. The energy and water inputs during the short feeding periods are very fast. Only 8% of the total energy in the eaten food are assimilated. Eighty-nine percent of the total assimilated energy are utilized in respiration during the various periods of activity and dormancy.The water loss during the feeding and activity period is about 37% of the total annual input. The snails lose twice as much the amount of water during the winter dormancy periods than in the summer dormancy period.
1976年至1978年间，我们研究了内盖夫北部石质山坡上最常见的蜗牛——先知 Sphincterochila prophetarum 的生态。基于实地观察，在个体和种群层面进行了能量和水流测定，并从实验室模拟中获取了代谢数据。这些蜗牛一年中仅在5%至7%的时间内活动，其余95%的时间则在石头下夏眠。在短暂的进食期内，能量和水分的输入非常迅速。所摄入食物中仅有8%的总能量被同化。在活动和休眠的各个阶段，总同化能量的89%用于呼吸作用。进食和活动期间的水分流失约占全年总摄入量的37%。蜗牛在冬季休眠期的失水量是夏季休眠期的两倍。
