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Microplastics in the Digestive Tract and Gills of Dormitator maculatus (Perciformes, Eleotridae) from Alvarado Lagoon
Summary
Researchers analyzed microplastic contamination in the digestive tracts and gills of 127 Dormitator maculatus fish from the Alvarado lagoon, recovering 1,134 microplastic particles -- predominantly blue fibers comprising 97.53% of the total -- from both tissue types. The study documents high microplastic ingestion rates in this nearshore fish species and highlights fiber pollution as the dominant microplastic form in the lagoon.
127 “naca” fish, Dormitator maculatus from the Alvarado lagoon, were analyzed, of which 1134 microplastics (MP) were obtained: 561 found in the digestive tract and 573 in gills. The predominant MP found in D. maculatus were fibers with 97.53%, the most abundant color was blue (62%), followed by transparent (12%) and of these the MP in the form of fibers predominated. Regarding the biological parameters, there was only a positive correlation with the weight of the intestine and the weight of the gills; However, this ratio is very low. The biological parameters analyzed: weight, height, condition index and intestinal fullness, lack a relationship between the amount of MP present in the intestines and gills. The type of PM obtained indicates that they come from urban areas, a product of daily activities such as washing clothes and fishing.