Stranded false killer whales, Pseudorca crassidens, in Southern South America reveal potentially dangerous silver concentrations

被引：6

作者：

Caceres-Saez, Iris ^{[1
]}

Haro, Daniela ^{[2
]}

Blank, Olivia ^{[3
]}

Aguayo-Lobo, Anelio ^{[4
]}

Dougnac, Catherine ^{[5
]}

Arredondo, Cristobal ^{[6
]}

Luis Cappozzo, H. ^{[1
]}

Ribeiro Guevara, Sergio ^{[7
]}

机构：

[1] Consejo Nacl Invest Cient & Tecn, Museo Argentino Ciencias Nat Bernardino Rivadavia, Ave Angel Gallardo 470,C1405DJR, Buenos Aires, DF, Argentina

[2] Univ Santo Tomas, Ctr Bahia Lomas, Ave Costanera 01834, Punta Arenas, Chile

[3] Clin Vet Timaukel & Ctr Rehabil Aves Lefiadura CR, Jose Pithon 01316, Punta Arenas, Chile

[4] Inst Antartico Chileno INA CH, Plaza Munoz Gamero 1055, Punta Arenas, Chile

[5] Univ Chile, Fac Ciencias Vet & Pecuarias, Av Santa Rosa 11735, Santiago, Chile

[6] Tarukari Nongovt Org, Santiago, Chile

[7] Ctr Atom Bariloche, Lab Anal Activac Neutron, Ave Bustillo 9500, San Carlos De Bariloche, Rio Negro, Argentina

来源：

MARINE POLLUTION BULLETIN | 2019年 / 145卷

关键词：

Odontocetes; Strandings; Toxic metal; Organs; South Atlantic Ocean; TRACE-ELEMENT CONCENTRATIONS; NONESSENTIAL ELEMENTS; POLAR BEARS; CHEMICAL CONTAMINANTS; ESCHRICHTIUS-ROBUSTUS; LIVER-TISSUES; HEAVY-METALS; NANOPARTICLES; CETACEANS; TOXICITY;

D O I：

10.1016/j.marpolbul.2019.05.047

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Silver (Ag) is a non-essential metal known to bioaccumulate in aquatic organisms. We determined Ag concentrations in five false killer whales stranded in South America. Silver concentrations (in dry weight basis) range as 6.62-10.78 mu g g(-1) in liver, 0.008-7.41 mu g g(-1) in spleen, 0.004-5.71 pg g(-1) in testis, 0.757-1.69 mu g g(-1) in kidney, 0.011-0.078 mu g g(-1) in lung and < 0.01-0.038 mu g g(-1) in muscle, whereas in the single samples of uterus and ovary were 0.051 and 0.023 mu g g(-1); respectively. Overall, Ag concentration in liver and kidney exceeded the cetacean toxic thresholds, proposed as "unhealthy concentrations" and "critically dangerous" in liver and kidney. These results warrant further eco-toxicological studies, to examine biological effects of elevated silver levels for individuals and to assess the species' conservation status with respect to marine pollution.

引用

页码：325 / 333

页数：9

共 98 条

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