Simultaneous observations of hemolymph flow and ventilation in marine spider crabs at different temperatures with flow weighted MRI
نویسندگان
چکیده
Introduction Flow weighted gradient echo MRI techniques can be used for angiography. Furthermore, these techniques allow to visualise the ventilation of aquatic animals (1). Therefore using MRI, it should be possible to observe ventilation and blood flow in marine animals at the same time. Biochemical investigations led to the hypothesis that thermal tolerance is limited by insufficient oxygen supply to tissues at extreme temperatures (2). To test this hypothesis we investigated ventilation as well as hemolymph flow in the spider crab Mu+ squinado at temperatures between 2 “C and 12 “C with flow weighted MRI. These results were compared with ultra sonic doppler flow measurements and ventilation rate analyses at different temperatures. ,
منابع مشابه
Pii: S0730-725x(01)00414-3
In vivo magnetic resonance imaging (MRI) and angiography were applied to the marine spider crab Maja squinado for a study of temperature effects and thermal tolerance. Ventilation and haemolymph circulation were investigated during progressive cooling from 12°C to 2°C. The anatomical resolution of MR images from Maja squinado obtained with a standard spin echo sequence were suitable to resolve ...
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