Unidad Mazatlán en Acuicultura y Manejo Ambiental, Centro de Investigación en Alimentación y Desarrollo A.C., Av. Sábalo-Cerritos s/n, Estero del Yugo, Mazatlán, Sinaloa CP82100, Mexico.
Unidad Mazatlán en Acuicultura y Manejo Ambiental, Centro de Investigación en Alimentación y Desarrollo A.C., Av. Sábalo-Cerritos s/n, Estero del Yugo, Mazatlán, Sinaloa CP82100, Mexico; Laboratorio de Ornitología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León CP66450, Mexico.
Mar Pollut Bull. 2021 Mar;164:112050. doi: 10.1016/j.marpolbul.2021.112050. Epub 2021 Jan 27.
The temporal, inter-site, and sex-based variation of 19 organochlorine pesticides (OCPs) in blood plasma samples collected from blue-footed boobies of two islands in Sinaloa, Mexico, was evaluated. The effect of OCPs was evaluated with the heterophil/lymphocyte ratio, micronucleated erythrocyte frequency, and scaled mass index. The OCP-group levels decreased as the breeding season progressed, and interannual (but not inter-colony) differences were detected. Intra-annual variation in OCP levels seemed to reflect run-off inputs, although other environmental processes may better explain the variation between years. Sex-based differences in OCP levels were likely related to ecological and physiological processes linked to breeding (e.g., egg-laying and use of lipid reserves). No correlations between OCP-group levels and biomarkers were detected. Small pelagic fishes are the main prey sources of blue-footed boobies and the targets of regional industrial fisheries, and thus blue-footed booby OCP levels could reflect ecosystem health and indicate potential risks for human consumers.
本研究评估了来自墨西哥锡那罗亚两个岛屿的蓝脚鲣鸟血液血浆样本中 19 种有机氯农药（OCPs）的时间、地点和性别变化。通过异嗜性粒细胞/淋巴细胞比值、微核红细胞频率和比例质量指数评估 OCP 的影响。随着繁殖季节的进行，OCP 组水平降低，并且检测到了年际（而非巢间）差异。OCP 水平的年内变化似乎反映了径流量的输入，尽管其他环境过程可能更好地解释了年间的变化。OCP 水平的性别差异可能与与繁殖相关的生态和生理过程（例如，产卵和使用脂质储备）有关。未检测到 OCP 组水平与生物标志物之间的相关性。小型中上层鱼类是蓝脚鲣鸟的主要食物来源，也是区域工业渔业的目标，因此蓝脚鲣鸟的 OCP 水平可以反映生态系统的健康状况，并表明对人类消费者的潜在风险。
