Graduate Program in Animal Science and Fisheries Resources, Federal University of Amazonas, Avenue General Rodrigo Octavio Jordão Ramos, Coroado I, Manaus, 69067-005, Amazonas, Brazil.
Federal Institute of Education, Science and Technology of Amazonas, Coari, Road Coari Itapéua, unnumbered - Itamarati, Coari, 69460-000, Amazonas, Brazil.
Vet Res Commun. 2024 Aug;48(4):2595-2610. doi: 10.1007/s11259-024-10427-8. Epub 2024 May 29.
The evaluation of hematological and plasma biochemical parameters and the subsequent establishment of reference intervals facilitate the diagnosis of the health status of animals. This work aimed to determine the blood parameters of wild specimens of the stingrays Potamotrygon motoro and Potamotrygon orbignyi from the lower Solimões River region, Amazonas, Brazil. One hundred forty-one stingrays were captured, 92 specimens of P. motoro and 49 of P. orbignyi, of both sexes and at different stages of development. No effect of sex was observed on the blood parameters of juvenile animals for both species. P. motoro neonates presented a distinct hematological and biochemical profile, with significantly lower hematocrit values, hemoglobina, number of erythrocytes, mean corpuscular hemoglobin concentration, monocytes, plasma glucose, total proteins, albumin, and globulin. On the other hand, total cholesterol and urea levels were significantly higher in this same group compared to juveniles of the same species. Comparison between species revealed lower values of triglycerides and total cholesterol in P. orbignyi of both sexes. The results obtained are pioneering for these Amazonian species in white water environments and will serve as a basis for evaluating the health status of wild stingrays. Thus, from the analysis of the blood of the P. motoro and P. orbignyi stingrays, it was possible to observe good health conditions.
评估血液学和血浆生化参数，并随后建立参考区间，有助于诊断动物的健康状况。本研究旨在确定来自巴西亚马逊下索利蒙伊斯河地区的野生石斑鱼 Potamotrygon motoro 和 Potamotrygon orbignyi 的血液参数。共捕获了 141 条石斑鱼，其中 92 条为 P. motoro，49 条为 P. orbignyi，包括雌雄两性和不同发育阶段的个体。对于这两个物种的幼年动物，性别对血液参数没有影响。P. motoro 的新生儿具有明显的血液学和生化特征，其血细胞比容、血红蛋白、红细胞数、平均红细胞血红蛋白浓度、单核细胞、血浆葡萄糖、总蛋白、白蛋白和球蛋白显著较低。另一方面，与同一物种的幼年个体相比，该组总胆固醇和尿素水平显著升高。种间比较显示，雌雄两性的 P. orbignyi 甘油三酯和总胆固醇值较低。这些结果对于这些生活在白水环境中的亚马逊石斑鱼来说是开创性的，将为评估野生石斑鱼的健康状况提供依据。因此，通过分析 P. motoro 和 P. orbignyi 石斑鱼的血液，可以观察到良好的健康状况。
