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Análisis de microplásticos en estómagos de Mugil cephalus (Linnaeus, 1758) en el norte de Sinaloa
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Researchers found 31 microplastic particles in stomachs of striped mullet (Mugil cephalus) from northern Sinaloa, Mexico, ranging from 1.15 to 3.9 mm, with no significant differences by sex or size class, though significant differences in gastric repletion index were observed between collection sites.
Los microplásticos alcanzan tamaños entre 5 mm y 100 μm, los cuales se degradan hasta nanoplásticos, que son menores a 100 nm. Estos microplásticos representan una amenaza para los peces dado que bloquean el paso de los alimentos, reducen la ingesta y asimilación de los nutrientes, afectando su crecimiento, reproducción, metabolismo y supervivencia, entre otros aspectos. En la presente investigación en la lisa Mugil cephalus se encontraron 31 partículas microplásticas en los estómagos, con tamaños que oscilan entre 1.15 y 3.9 mm. No se presentaron diferencias significativas entre organismos inmaduros, machos o hembras, ni en el análisis por tallas. En el análisis morfofisiológico se presentaron diferencias significativas en el índice de repleción gástrica en organismos de la bahía El Perro, en Ahome, Sinaloa.
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Análisis de la presencia de microplásticos en estómago de la lisa Mugil cephalus (Linnaeus, 1758) en playa La Robalera y bahía del Perro, Ahome, Sinaloa
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Researchers examined stomachs of striped mullet (Mugil cephalus) from two coastal sites in Sinaloa, Mexico, finding an average of 6 microplastics per stomach with a mean particle size of 2,625 µm in autumn, with larger fish consuming more particles and males showing higher microplastic counts and sizes than females.
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Researchers characterize two euryhaline mullet species (Mugil cephalus and M. curema) from the Mexican Pacific, examining their morphophysiology, blood biochemistry, microplastic ingestion levels, and parasitic disease burden to inform sustainable fisheries management and aquaculture development.
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Researchers conducted the first microplastic study in bottlenose dolphins (Tursiops truncatus) stranded in southern Gulf of Mexico waters, finding microplastics in 100% of stomach contents examined, with plastic fibers (90.9%) predominating over fragments and blue being the most common color, and detecting similar blue fibers in prey fish species from the same area.
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Researchers analyzed microplastics in the gastrointestinal tracts of Metynnis maculatus fish from the Moxotó Reservoir in Brazil, collecting 68 microplastic particles across seven sampling periods, with blue filaments predominating and higher abundances observed during the rainy season in May.
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