The effect of instrument attachment on the surface temperature of juvenile grey seals (Halichoerus grypus) as measured by infrared thermography

摘要: Previous research has highlighted the importance of minimising hydrodynamic drag from biologging instruments fitted to marine mammals. However, there is a need investigate other possible impacts on animals. The aim this study was examine effect deploying surface temperature distribution grey seals (Halichoerus grypus). Infrared (IR) thermography used record two juveniles that had been with heart rate recorders and mounting straps for attachment time depth recorder. When animals were fully wet inactive, pattern unaffected by instruments. as dried out regions high recorded around edges sites compared surrounding fur. This appeared be due heat leakage sides provided an additional layer insulation. There no obvious changes in associated duration deployment. work shows relatively small will produce localised effects transfer air but not significantly change total exchange land or at sea. IR also shown useful method detecting patterns epidural anaesthesia blubber biopsy.