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首页> 外文期刊>Environmental toxicology and chemistry >DIETARY EXPOSURE OF MINK (MUSTELA VISON) TO FISH FROM THE HOUSATONIC RIVER, BERKSHIRE COUNTY, MASSACHUSETTS, USA: EFFECTS ON ORGAN WEIGHTS AND HISTOLOGY AND HEPATIC CONCENTRATIONS OF POLYCHLORINATED BIPHENYLS AND 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN TOXIC
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DIETARY EXPOSURE OF MINK (MUSTELA VISON) TO FISH FROM THE HOUSATONIC RIVER, BERKSHIRE COUNTY, MASSACHUSETTS, USA: EFFECTS ON ORGAN WEIGHTS AND HISTOLOGY AND HEPATIC CONCENTRATIONS OF POLYCHLORINATED BIPHENYLS AND 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN TOXIC

机译：饮食中来自美国马萨诸塞州伯克希尔县伯克希尔县水貂河的水貂食用鱼（对肉类的食用）：对多氯联苯和2,3,7,8-二甲苯酚的器官重量，组织学和肝素浓度的影响

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The effects of feeding ranch mink (Mustela vison) diets containing polychlorinated biphenyl (PCB)-contaminated fish (88 gold fish [Carassius auratus] weighing a total of 70.3 kg and 16 carp [Cyprinus carpio] weighing a total of 77.3 kg) collected from the Housatonic River (HR; Berkshire County, MA, USA) in October 1999 on organ weights and histology and hepatic concentrations of total PCBs (ΣPCBs) and 2,3,7,8-tetrachlorodibenzo-p-dioxin toxic equivalence (TEQ) were evaluated. Diets contained 0.22 to 3.54% HR fish, which provided 0.34 to 3.7 μg ΣPCBs/g feed (3.5-69 pg TEQ/g feed). Female mink were fed the diets eight weeks before breeding through weaning of kits at six weeks of age. Offspring were maintained on their respective diets for an additional 180 d. The dietary concentration of PCBs that caused a decrease in kit survival (3.7 μg ΣPCBs/g feed [69 pg TEQ/g]) resulted in a maternal hepatic concentration of 3.1 μg ΣPCBs/g wet weight (218 pg TEQ/g). Organ weights were not consistently affected. Mandibular and maxillary squamous cell proliferation was apparent in 31-week-old juveniles exposed to as low as 0.96 μg ΣPCBs/g feed (9.2 pg TEQ/g). Juveniles in this treatment group had a liver concentration of 1.7 μg ΣPCBs/g wet weight (40 pg TEQ/g). Because inclusion of PCB-contaminated fish, which comprised approximately 1% of the diet, resulted in mandibular and maxillary squamous cell proliferation, it is possible that consumption of up to 30-fold that quantity of HR fish, as could be expected for wild mink, would result in more severe lesions characterized by loss of teeth, thus impacting survivability.
机译：从收集的含多氯联苯（PCB）污染鱼（88头金鱼[Carassius auratus]重共70.3千克，共16头鲤鱼[Cyprinus carpio]重共77.3千克）的饲料中饲喂牧场水貂（Mustela vison）饲料的效果于1999年10月在美国哈萨克顿河（HR;美国马萨诸塞州伯克郡）进行了研究，研究了总PCB（ΣPCB）和2,3,7,8-四氯二苯并-p-二恶英毒性当量（TEQ）的器官重量，组织学和肝脏浓度评估。日粮中含有0.22％至3.54％的HR鱼，它们提供0.34至3.7μgΣPCBs/ g饲料（3.5-69 pg TEQ / g饲料）。通过在六周龄断奶的工具箱进行繁殖，然后在八周前给雌性貂喂食。后代在各自的饮食下再维持180天。膳食中多氯联苯的饮食浓度降低了试剂盒的存活率（3.7μgΣPCBs/ g饲料[69 pg TEQ / g]），导致母体肝脏浓度为3.1μgΣPCBs/ g湿重（218 pg TEQ / g）。器官重量并未持续受到影响。在暴露于低至0.96μgΣPCBs/ g饲料（9.2 pg TEQ / g）的31周龄幼鱼中，下颌和上颌鳞状细胞增殖明显。该治疗组中的少年肝脏浓度为1.7μgΣPCBs/ g湿重（40 pg TEQ / g）。因为包含被PCB污染的鱼（约占日粮的1％）会导致下颌和上颌鳞状细胞增殖，所以食用野生鱼类可能会消耗多达HR鱼数量30倍的鱼。会导致更严重的病变，其特征是牙齿脱落，从而影响生存能力。

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