Programa de Pós-Graduação em Zoologia, Universidade Federal do Amazonas, Avenida General Rodrigo Otávio, 6200, Manaus Amazonas 69077-000, Brazil.
Faculdade de Educação, Universidade Federal do Amazonas, Avenida General Rodrigo Otávio, 6200, Manaus Amazonas 69077-000, Brazil.
J Wildl Dis. 2024 Jan 1;60(1):198-203. doi: 10.7589/JWD-D-23-00067.
Reference intervals for physiologic parameters, crucial for assessing the health status of animals, have been documented for various crocodilian species across the globe. Nonetheless, the establishment of plasma biochemical reference intervals specific to Amazonian crocodilians remains incomplete. In an effort to address this gap, we procured blood samples from 65 black caimans (Melanosuchus niger) and 58 spectacled caimans (Caiman crocodilus) during the period of September-December 2019 within the Anavilhanas National Park in the Brazilian Amazon region We aimed to define reference intervals for 11 key plasma variables measured, namely glucose, triglycerides, total cholesterol, calcium, magnesium, sodium, potassium, albumin, total protein, uric acid, and urea. In general, the determined blood reference intervals aligned closely with those established for other crocodilian species. Some specific measurements, such as total cholesterol, sodium, and magnesium, exhibited distinct variations based on the species. Furthermore, female black caimans showcased elevated cholesterol levels compared with their male counterparts. Within the spectacled caimans, disparities related to sex were evident solely in the case of electrolytes sodium and potassium, with males demonstrating higher levels compared with females. These reference intervals not only provide data for assessing potential fluctuations in the health of wild or captive Amazonian crocodilians but also hold value for veterinary management.
生理参数的参考区间对于评估动物的健康状况至关重要，已经为全球各种鳄鱼物种记录下来。然而，针对亚马孙鳄的血浆生化参考区间的建立仍不完善。为了填补这一空白，我们于 2019 年 9 月至 12 月期间在巴西亚马孙地区的阿纳维利汉纳斯国家公园采集了 65 只黑凯门鳄（Melanosuchus niger）和 58 只眼镜凯门鳄（Caiman crocodilus）的血液样本。我们旨在为 11 个关键血浆变量确定参考区间，分别是葡萄糖、甘油三酯、总胆固醇、钙、镁、钠、钾、白蛋白、总蛋白、尿酸和尿素。总的来说，所确定的血液参考区间与其他鳄鱼物种的参考区间非常接近。一些特定的测量值，如总胆固醇、钠和镁，根据物种的不同表现出明显的差异。此外，雌性黑凯门鳄的胆固醇水平比雄性高。在眼镜凯门鳄中，仅在电解质钠和钾方面存在性别差异，雄性的水平高于雌性。这些参考区间不仅为评估野生或圈养亚马孙鳄健康状况的潜在波动提供了数据，也为兽医管理提供了价值。
