Effects of Physical‐Chemical Factors on the Distribution and Occurrence of Some Southeastern Wyoming Phyllopods
Effects of Physical‐Chemical Factors on the Distribution and Occurrence of Some Southeastern Wyoming Phyllopods
复制标题
物理化学因素对怀俄明州东南部一些叶足类动物分布和出现的影响
作者：
F. Horne
野外和实验室证据表明，叶足类对盐度和温度的耐受性差异显着影响其栖息地类型和季节发生。氧浓度和pH值对生态影响较小。根据其季节性发生和栖息地盐度，研究的11个叶足类进行分类。例如，根据卵和成虫的耐受性，林氏枝棘鲷是广温广盐性的，而长尾三棘鲷是狭温狭盐性的。虽然一些成年的叶足类可以忍受相当大的盐度和温度范围，但它们的卵并不一定如此适应。在某些情况下，卵的孵化率会受到对成年虾没有敌意的环境的阻碍。因此，叶足类卵有助于确定一个特定物种出现的时间和地点。具有中等高镁浓度的短命池塘可能对某些叶足类动物不友好。全文见JSTOR
Field and laboratory evidence demonstrates that differences in tolerance to salinity and temperature of phyllopods notably affect their habitat types and seasonal occurrence. Oxygen concentration and pH are of lesser ecological consequence. The 11 phyllopods studied are categorized according to their seasonal occurrence and habitat salinities. For example, based on the tolerance of both eggs and adults, Branchinecta lindahli is eurythermal and euryhaline, whereas Triops longicaudatus is stenothermal and stenohaline. Though some adult phyllopods endure substantial ranges in salinity and temperature, their eggs are not necessarily so adapted. In some instances egg hatchability is impeded by environments not hostile to adult shrimp. Phyllopod eggs are, therefore, instrumental in defining when and where a particular species occurs. Ephemeral ponds with moderately high magnesium concentrations may be hostile to some phyllopods. See full-text article at JSTOR