Alegría Henry, Martínez-Colón Michael, Huber Ashley, Solanke Adebayo, Dieppa Angel
Department of Chemistry, University of South Florida, 140 7th Ave South, St. Petersburg, FL 33701, United States.
School of the Environment, Florida A&M University, 1515 S MLK Boulevard, Tallahassee, FL 32307, United States.
Mar Pollut Bull. 2025 Oct;219:118264. doi: 10.1016/j.marpolbul.2025.118264. Epub 2025 Jun 10.
At the Jobos Bay National Estuarine Research Reserve in Puerto Rico historical evidence exists of usage of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). In this study, sediment, Avicennia germinans (black mangrove) leaf litter, and whole-body soft tissue of Minuca rapax (fiddler crab) were analyzed to assess trophic transfer mechanisms. Of these pollutants, PCBs were detected in all samples while p,p'-DDE and o,p'-DDT were the most frequently detected OCPs. "Fractionation" is observed for PCBs, where lighter PCBs are more frequently found in both A. germinans and M. rapax while heavier PCBs were detected more in the sediments. Biota-Sediment Accumulation Factors (BSAFs) indicate that there is uptake of p,p'-DDE, o,p'-DDT, and lighter PCBs by M. rapax and A. germinans from sediments while Bioaccumulation Factors (BAFs) indicate little bioaccumulation by M. rapax from mangroves. For heavier PCBs, BSAFs suggest that there is uptake by A. germinans but less by M. rapax from sediments while BAFs indicate little uptake by M. rapax from mangroves.
在波多黎各的乔博斯湾国家河口研究保护区，存在使用有机氯农药（OCPs）和多氯联苯（PCBs）的历史证据。在本研究中，对沉积物、白骨壤（黑红树林）落叶以及招潮蟹的全身软组织进行了分析，以评估营养转移机制。在这些污染物中，所有样本均检测到了多氯联苯，而p,p'-滴滴伊和o,p'-滴滴涕是最常检测到的有机氯农药。多氯联苯存在“分馏”现象，较轻的多氯联苯在白骨壤和招潮蟹中更常被发现，而较重的多氯联苯在沉积物中检测到的更多。生物-沉积物积累因子（BSAFs）表明，招潮蟹和白骨壤从沉积物中摄取了p,p'-滴滴伊、o,p'-滴滴涕和较轻的多氯联苯，而生物积累因子（BAFs）表明招潮蟹从红树林中的生物积累很少。对于较重的多氯联苯，生物-沉积物积累因子表明白骨壤从沉积物中有摄取，但招潮蟹摄取较少，而生物积累因子表明招潮蟹从红树林中的摄取很少。
