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Resumen del producto

Pintueles-Tamayo, J.F., A.J., Marmolejo-Rodríguez, F., Galván-Magaña, I.P., Zavala-Guevara, L.M., Pantoja-Echavarría, A., Lara, A., Piñón-Gimate, F.R., Elorriaga-Verplancken & L., Arreola-Mendoza (2025). Bioaccumulation and biomagnification of arsenic in the muscle and liver of the speckled guitarfish Pseudobatos glaucostigmus in Santa Rosalía, Gulf of California, Mexico. Marine Pollution Bulletin. 211: 117356. DOI: 10.1016/j.marpolbul.2024.117356.

Bioaccumulation and biomagnification of arsenic in the muscle and liver of the speckled guitarfish Pseudobatos glaucostigmus in Santa Rosalía, Gulf of California, Mexico

Jorge Felix Pintueles-Tamayo 1, Ana Judith Marmolejo-Rodríguez 2, Felipe Galván-Magaña 3, Itzel Pamela Zavala-Guevara 4, Laura María Pantoja-Echavarría 5, Ariagna Lara 6, Alejandra Piñón-Gimate 7, Fernando R. Elorriaga-Verplancken 3 y Laura Arreola-Mendoza 4

1 Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas
2 Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Departamento de Oacenología
3 Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Departamento de Pesquerías y Biología Marina
4 Instituto Politécnico Nacional, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y, Desarrollo (CIIEMAD)
5 Universidad de Granada (UGR), Granada, Spain
6 Universidad Autónoma de Baja California Sur
7 Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Departamento de Desarrollo de Tecnologías
Arsenic (As) concentrations were measured in the muscle and liver of the speckled guitarfish Pseudobatos glaucostigmus and its main prey Penaeus californiensis, in Santa Rosalia, western Gulf of California, to determine bioaccumulation and biomagnification. Higher mean wet weight (w.w.) values were found in muscle tissue (9.87 µg g-1) compared to liver tissue (5.32 µg g-1); however, the highest concentrations were found in the liver (48.05 µg g-1). All samples showed As concentrations above the maximum permissible limit for human consumption. The highest concentrations in mature females (muscle: 6.93 µg g-1; liver: 14.5 µg g-1) concerning pregnant females (muscle: 5.01 µg g-1; liver: 8.46 µg g-1) may indicate a maternal transfer of As from mothers to their embryos. Arsenic bioaccumulates in the liver, which was evident from the positive correlation between total length and As concentration. Arsenic levels in Penaeus californiensis showed biomagnification from prey to predator for both tissues.

Palabras clave: Arsenic; Metalloid; toxicity; batoids; Baja California Sur; Mexico

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