Hematology and blood biochemistry profile of the freshwater stingray Potamotrygon magdalenae as a tool for population assessment in artificial environments

Abstract Hematological and blood biochemical reference information is important to establish physiological status of freshwater stingray populations improve care management protocols in artificial environments. Here, we used a commercial with high mortality rates the market (Potamotrygon magdalenae), as an example understand how environments handling influence captive stingrays. To this purpose, from five adult males six females was collected perform complete counts chemistry analyses. All sampled animals showed good body condition no differences between sexes. Differences sexes were only found for differential count lymphocytes. Red results consistent previously studied potamotrygonids while white higher values leukocytes, thrombocytes, heterophils lymphocytes P. magdalenae compared other Potamotrygonids. types leukocytes described elasmobranchs except neutrophils basophils. Blood metabolites ex situ diet total protein, triglycerides cholesterol. Glucose urea lower levels than those recorded These highlight importance physical, health analysis stingrays part welfare assessment monitoring survival public or private aquaria.