Human activities in coastal catchments can cause the accumulation of pollutants in seafood. We quantified the concentration of heavy metals, pesticides and PFASs in the flesh of the fisheries species yellowfin bream Acanthopagrus australis (n = 57) and mud crab Scylla serrata (n = 65) from 13 estuaries in southeast Queensland, Australia; a region with a variety of human land uses. Pollutants in yellowfin bream were best explained by the extent of intensive uses in the catchment. Pollutants in mud crabs were best explained by the extent of irrigated agriculture and water bodies. No samples contained detectable levels of pesticides, and only six samples contained low levels of PFASs. Metals were common in fish and crab flesh, but only mercury in yellowfin bream from the Mooloolah River breached Australian food safety standards. High pollutant presence and concentration is not the norm in seafood collected during routine surveys, even in estuaries with highly modified catchments.

沿海流域的人类活动可能导致海鲜中污染物的积累。我们量化了黄鳍鲷（Afinathopagrus australis，n = 57）和泥蟹Scyla serrata肉中重金属，农药和PFAS的浓度（n = 65）来自澳大利亚昆士兰州东南部的13个河口；具有多种人类土地用途的区域。用集水区集约化利用的程度可以最好地解释黄鳍的污染物。用灌溉农业和水体的程度可以最好地解释泥蟹中的污染物。没有样品含有可检测水平的农药，只有六个样品含有低水平的PFAS。金属在鱼和蟹肉中很常见，但只有穆卢拉河中的黄鳍中的汞违反了澳大利亚食品安全标准。在常规调查期间，即使在集水区经过高度改造的河口中，污染物的高含量和高浓度也不是常规海产品中的常态。