Microplastics (< 5 mm) are ubiquitous contaminants in the marine environment. Many marine commercial species, among fish, mollusks and crustaceans, are subject to microplastic exposure through ingestion. The aims of the present study were to determine microplastic contamination in scallops from fishery markets of Lima and if microplastics are more likely to adhere to certain parts of the scallop. Argopecten purpuratus specimens were bought from fishery markets in Lima. Soft tissues were digested using 10% KOH and incubated at 60 °C overnight. An optical microscope was used to observe microplastics after vacuum filtration of the supernatant solution. Microplastic concentration, color and type were recorded. ATR-FTIR analysis determined the specific polymer types. The overall mean microplastic concentration was 2.25 ± 0.54 MP.ind-1. Fibers were the most abundant microplastic type, whi...

Los residuos sólidos en ambientes marinos son un problema de alta relevancia e incidencia a nivel global. En el presente estudio se describió la composición, características físicas y determinó la generación per cápita de los residuos sólidos en la playa Las Sombrillas, Lima. Se contabilizó la afluencia de bañistas en 3 puntos de y procedió a recoger y caracterizar los residuos generados por los bañistas contabilizados durante el día. La categoría de otros residuos no reciclables fue la más abundante, con un 33,22% de la masa total promedio y 44,97% del volumen total promedio. Ingresaron 2616 persona.día-1 en promedio, y generaron 0,014 kg.persona-1.día-1 en términos de masa y 0,000226 m3.persona-1.día-1 en términos de volumen. Los resultados difieren con la bibliografía citada. Las limitaciones del estudio se mencionaron en las discusiones.

Microplastics (< 5 mm) are ubiquitous contaminants in the marine environment. Many marine commercial species, among fish, mollusks and crustaceans, are subject to microplastic exposure through ingestion. The aims of the present study were to determine microplastic contamination in scallops from fishery markets of Lima and if microplastics are more likely to adhere to certain parts of the scallop. Argopecten purpuratus specimens were bought from fishery markets in Lima. Soft tissues were digested using 10% KOH and incubated at 60 °C overnight. An optical microscope was used to observe microplastics after vacuum filtration of the supernatant solution. Microplastic concentration, color and type were recorded. ATR-FTIR analysis determined the specific polymer types. The overall mean microplastic concentration was 2.25 ± 0.54 MP.ind-1. Fibers were the most abundant microplastic type, whi...

Los residuos sólidos en ambientes marinos son un problema de alta relevancia e incidencia a nivel global. En el presente estudio se describió la composición, características físicas y determinó la generación per cápita de los residuos sólidos en la playa Las Sombrillas, Lima. Se contabilizó la afluencia de bañistas en 3 puntos de y procedió a recoger y caracterizar los residuos generados por los bañistas contabilizados durante el día. La categoría de otros residuos no reciclables fue la más abundante, con un 33,22% de la masa total promedio y 44,97% del volumen total promedio. Ingresaron 2616 persona.día-1 en promedio, y generaron 0,014 kg.persona-1.día-1 en términos de masa y 0,000226 m3.persona-1.día-1 en términos de volumen. Los resultados difieren con la bibliografía citada. Las limitaciones del estudio se mencionaron en las discusiones.

Microplastic (< 5 mm) pollution have raised concern on behalf of the scientific community and the general public. Microplastic occurrence in aquatic environments and organisms have been well documented. However, it is in recent years that the ecotoxicological effects of microplastics have begun to be studied. The aim of the present study was to review, evaluate and discuss the current state of art regarding microplastic and related contaminants ecotoxicological effects in microalgae, crustaceans, molluscs and fish. The results of previous studies have proven growth inhibition and chlorophyll-a decrease in microalgae. Ingestion by small crustaceans and population reduction have been evidenced. Biomarkers in bivalves and fish have shown neurotoxic effects and oxidative stress, along with abnormal behavior. The current state of art lacks realistic parameters and microplastic concentratio...

Microplastic (< 5 mm) pollution have raised concern on behalf of the scientific community and the general public. Microplastic occurrence in aquatic environments and organisms have been well documented. However, it is in recent years that the ecotoxicological effects of microplastics have begun to be studied. The aim of the present study was to review, evaluate and discuss the current state of art regarding microplastic and related contaminants ecotoxicological effects in microalgae, crustaceans, molluscs and fish. The results of previous studies have proven growth inhibition and chlorophyll-a decrease in microalgae. Ingestion by small crustaceans and population reduction have been evidenced. Biomarkers in bivalves and fish have shown neurotoxic effects and oxidative stress, along with abnormal behavior. The current state of art lacks realistic parameters and microplastic concentratio...