VALIDATION OF A SIMPLE PORTABLE INSTRUMENT FOR MEASUREMENT OF BLOOD GLUCOSE IN FOUR AMAZON FISHES

摘要

Responses of four Amazon fishes (pirarucu, tambaqui, matrinxa, and tamoata) to capture, handling and crowding stress were used to validate the efficacy of a portable meter in measuring blood glucose. Blood glucose was highly correlated with referencemethod in all the studied species. Blood glucose meter is able to record absolute glucose values for tambaqui and tamoata. Blood glucose in pirarucu and matrinxa were lower than those obtained with a plasma enzymatic reference method. Reliability of bothmethods are high being greater in the reference method. The variation of a same sample of blood glucose is greater in resting fish than in stressed fish. These findings indicate a potential role for portable glucose instrument in the field and hatcheryfacilities, but the result is species specific and should be validated for each species before use.