Cold mortality is not caused by oxygen limitation or loss of ion homeostasis in the tropical freshwater shrimp Macrobrachium rosenbergii.
作者： Lisa B. Jørgensen , Heath A. MacMillan , Johannes Overgaard
DOI: 10.1016/J.CRYOBIOL.2017.04.011
关键词: Anaerobic exercise 、 Freshwater shrimp 、 Shrimp 、 Biology 、 Macrobrachium rosenbergii 、 Zoology 、 Ion homeostasis 、 Crustacean 、 Hemolymph 、 Ecology 、 Ectotherm
摘要: Using the tropical crustacean Macrobrachium rosenbergii we investigate two popular hypotheses proposed to explain loss of function in ectotherms exposed critically high and low temperatures. Specifically, examine whether acute cold stress disrupts hemolymph muscle ion balance or causes a oxygen availability. We found that righting response at 13 °C, but cold-induced ion-balance only occurs after onset mortality. In regards availability, no decrease content during exposure, changes concentrations anaerobic end products l-lactate succinate tail shrimp. Therefore, our results support neither these it remains unknown what physiological perturbations determine lower limits thermal tolerance rosenbergii.
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