Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico

Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico

Four gray whales Eschrichtius robustus and eleven spinner dolphins Stenella longirostris were found stranded along the coasts of the lower Gulf of California, Mexico. Muscle, kidney and liver samples from all the specimens were used for mercury (Hg) analysis. Mean concentrations of total Hg (THg) we...

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প্রধান লেখক: Ruelas-Inzunza, JR, Horvat, M, Pérez-Cortés, H, Páez-Osuna, F
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প্রকাশিত: Iniversidad Autónoma de Baja California 2003
অনলাইন ব্যবহার করুন:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/138
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spelling oai:cienciasmarinas.com.mx:article-1382019-04-26T23:30:34Z Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico Distribución de metilmercurio y mercurio en tejidos de ballenas grises (Eschrichtius robustus) y delfines tornillo (Stenella longirostris) varados en el bajo Golfo de California, México Ruelas-Inzunza, JR Horvat, M Pérez-Cortés, H Páez-Osuna, F mercury methylmercury Stenella longirostris Eschrichtius robustus Gulf of California (Mexico) mercurio metilmercurio Stenella longirostris Eschrichtius robustus Golfo de California (México) Four gray whales Eschrichtius robustus and eleven spinner dolphins Stenella longirostris were found stranded along the coasts of the lower Gulf of California, Mexico. Muscle, kidney and liver samples from all the specimens were used for mercury (Hg) analysis. Mean concentrations of total Hg (THg) were significantly different (P < 0.05) in all the tissues of spinner dolphins, resulting in a decreasing order liver>kidney>muscle. Mean values of THg in the three tissues of gray whales were not statistically different. Similarly, methylmercury (MeHg) levels in the analyzed tissues of dolphins and whales were not statistically different. Considering species-related differences, it seems that THg and MeHg levels in the studied marine mammals did not play a key role in the stranding of the specimens, though more studies about the implications of Hg compounds in stranding events are necessary. Se encontraron varadas cuatro ballenas grises Eschrichtius robustus y once delfines tornillo Stenella longirostris a lo largo de las costas del bajo Golfo de California, México. Se utilizaron muestras de músculo, riñón e hígado de todos los especímenes para los análisis de mercurio (Hg). Las concentraciones medias de Hg total fueron significativamente diferentes (P < 0.05) en todos los tejidos de los delfines tornillo, resultando en un orden decreciente de concentraciones hígado>riñón>músculo. Los valores medios de Hg total en los tres tejidos de las ballenas grises no fueron estadísticamente diferentes. De manera similar, los niveles de metilmercurio (MeHg) en los tejidos analizados de los delfines y de las ballenas no fueron estadísticamente diferentes. Considerando que existen diferencias a nivel de especies, al parecer los niveles de Hg total y de MeHg en los mamíferos marinos estudiados no jugaron un papel decisivo en el varamiento de los organismos, aunque se requieren más estudios acerca de las implicaciones de los compuestos de Hg durante los eventos de varamiento. Iniversidad Autónoma de Baja California 2003-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/138 10.7773/cm.v29i1.138 Ciencias Marinas; Vol. 29 No. 1 (2003); 1-8 Ciencias Marinas; Vol. 29 Núm. 1 (2003); 1-8 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/138/115
institution Ciencias Marinas
collection OJS
language eng
format Online
author Ruelas-Inzunza, JR
Horvat, M
Pérez-Cortés, H
Páez-Osuna, F
spellingShingle Ruelas-Inzunza, JR
Horvat, M
Pérez-Cortés, H
Páez-Osuna, F
Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico
author_facet Ruelas-Inzunza, JR
Horvat, M
Pérez-Cortés, H
Páez-Osuna, F
author_sort Ruelas-Inzunza, JR
title Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico
title_short Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico
title_full Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico
title_fullStr Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico
title_full_unstemmed Methylmercury and total mercury distribution in tissues of gray whales (Eschrichtius robustus) and spinner dolphins (Stenella longirostris) stranded along the lower Gulf of California, Mexico
title_sort methylmercury and total mercury distribution in tissues of gray whales (eschrichtius robustus) and spinner dolphins (stenella longirostris) stranded along the lower gulf of california, mexico
description Four gray whales Eschrichtius robustus and eleven spinner dolphins Stenella longirostris were found stranded along the coasts of the lower Gulf of California, Mexico. Muscle, kidney and liver samples from all the specimens were used for mercury (Hg) analysis. Mean concentrations of total Hg (THg) were significantly different (P < 0.05) in all the tissues of spinner dolphins, resulting in a decreasing order liver>kidney>muscle. Mean values of THg in the three tissues of gray whales were not statistically different. Similarly, methylmercury (MeHg) levels in the analyzed tissues of dolphins and whales were not statistically different. Considering species-related differences, it seems that THg and MeHg levels in the studied marine mammals did not play a key role in the stranding of the specimens, though more studies about the implications of Hg compounds in stranding events are necessary.
publisher Iniversidad Autónoma de Baja California
publishDate 2003
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/138
_version_ 1715723934908809216

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