Despite the utility of blood analyte evaluation as a diagnostic tool to assist in monitoring the health of marine fishes, baseline data are often lacking for many commercially important finfish species. The objective of this study was to compare hematology and plasma chemistry data for adult wild-caught Almaco Jack Seriola rivoliana at time of capture and again following a period of acclimation to a recirculating aquaculture system and hyposalinity treatment. A total of 30 clinically healthy adult fish were caught via hook and line in the eastern Gulf of Mexico, approximately 120 mi offshore from Madeira Beach, Florida. Blood was collected from a subset of these fish (n = 13) immediately after capture and again at 16 weeks postcapture from another subset (n = 12) following a 45-d antiparasitic hyposalinity treatment. A 19% increase in fish body weight was observed during the study period (16 weeks) and no overt health issues or mortality were noted. Compared to fish that were sampled immediately following capture, several significant differences (P < 0.05) were observed. Absolute white blood cells were lower in captive held fish, suggesting biological variation, antigenic stimulation in wild fish, and/or immunosuppression associated with stress in captive held fish. Lower sodium, chloride, and calculated osmolality indicate osmoregulatory adjustments following the hyposalinity treatment by 16 weeks postcapture. Other observed plasma biochemical differences presumptively reflect dietary and/or environmental changes, or physiological variation following acclimation to captive culture conditions. This study reports baseline blood analyte data of wild-caught Almaco Jack and documents hematological and plasma biochemical responses to their new environment as captive broodstock. Baseline hematological and plasma biochemistry data obtained during this study are the first reported for this species.

中文翻译：

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野生捕获的成年 Almaco Jack 的血液分析物变化对循环水产养殖系统和低盐度处理的适应

尽管血液分析物评估可用作辅助监测海洋鱼类健康的诊断工具，但许多具有重要商业价值的有鳍鱼类通常缺乏基线数据。本研究的目的是比较野生捕获的成年 Almaco Jack Seriola rivoliana在捕获时和适应循环水产养殖系统和低盐度处理一段时间后的血液学和血浆化学数据。在距佛罗里达州马德拉海滩约 120 英里的墨西哥湾东部，通过鱼钩和钓线共捕获了 30 条临床健康的成年鱼。捕获后立即从这些鱼的一个子集 ( n = 13)中收集血液，并在捕获后 16 周再次从另一个子集 ( n= 12) 经过 45 天的抗寄生虫低盐度治疗。在研究期间（16 周）观察到鱼体重增加了 19%，没有发现明显的健康问题或死亡率。与捕获后立即取样的鱼相比，有几个显着差异（P< 0.05) 被观察到。圈养鱼的绝对白细胞水平较低，表明生物变异、野生鱼的抗原刺激和/或与圈养鱼压力相关的免疫抑制。较低的钠、氯和计算的渗透压表明在捕获后 16 周进行低盐度处理后的渗透压调节。其他观察到的血浆生化差异推测反映了饮食和/或环境变化，或适应圈养培养条件后的生理变化。本研究报告了野生捕捞的 Almaco Jack 的基线血液分析物数据，并记录了对其作为圈养亲鱼的新环境的血液学和血浆生化反应。