
handle: 2183/31979
[Resumen] La ubicuidad de los microplásticos (MP) y el pequeño tamaño que presentan, los hace disponibles para una amplia gama de organismos marinos, entre ellos los cnidarios. Se ha llevado a cabo un estudio para comprobar la dinámica de ingestión-egestión y la palatabilidad de diferentes MP con y sin biofilm tanto en la fase pólipo como en la fase medusa de Aurelia aurita. Además, se ha realizado una verificación de si aquellas medusas de mayor tamaño captan y se introducen en la cavidad gástrica mayor cantidad de MP. Los resultados han revelado diferencias significativas en medusas a la hora de captar los MP con los tentáculos e introducírselos en la cavidad gástrica. Se ha obtenido un mayor porcentaje de fibras con biofilm que capta en los tentáculos, sin embargo, se introducen en la cavidad un mayor porcentaje de fibras sin biofilm. En relación a los pólipos, no se han obtenido diferencias significativas en cuanto a la palatabilidad de los diferentes MP. No se han hallado diferencias significativas en los tiempos medios de ingestión y egestión en medusas y pólipos. Finalmente, no se ha observado una correlación entre el número de MP que capta o se introduce en la cavidad gástricas y el diámetro de la umbrela de las medusas.
[Abstract] The ubiquity of microplastics (MP) and their small size makes them available to a wide range of marine organisms, including cnidarians. A study was carried out to test the ingestion-eggestion dynamics and palatability of different MP with and without biofilm in both the polyp and medusa stages of Aurelia aurita. Also, the average time of ingestion and egestion of these polymers in both phases has been obtained. In addition, it has been verified whether larger jellyfish capture and enter the gastric cavity a greater amount of MP. The results have revealed significant differences in jellyfish when it comes to capturing MP with their tentacles and introducing them into the gastric cavity. A higher percentage of fibres with biofilm was obtained from the tentacles, but a higher percentage of fibres without biofilm were introduced into the cavity. With regard to polyps, no significant differences were found in the palatability of the different MPs. No significant differences were found in the mean ingestion and egestion times of jellyfish and polyps. Finally, no correlation was observed between the number of MPs taken up or introduced into the gastric cavity and the diameter of the jellyfish umbrela.
Este trabajo ha sido elaborado en instalaciones de la Universidad de Alicante, en concreto en la Estación Científica Montgó-Dénia y ha contado con co-financiación del Ayuntamiento de Dénia y de la Generalitat Valenciana (Conselleria de Agricultura, Desarrollo Rural, Emergencia Climática y Transición Ecológica). También ha tenido co-financiación del proyecto "A comprehensive marine observatory in the coast of Marina Alta for the conservation of biodiversity, observtion of global change and promotion of the blue economy (OBSERMAR-CV ThinkinAzul)"
Traballo fin de mestrado (UDC.CIE). Bioloxía mariña. Curso 2021/2022
Microfibre, Microsphere, Egestión, Microfibra, Biofilm, Pólipo, Ingestion, Egestion, Microplastic, Aurelia aurita, Ingestión, Marine pollution, Polyp, Contaminación marina, Microesfera, Medusa, Jellyfish, Microplástico
Microfibre, Microsphere, Egestión, Microfibra, Biofilm, Pólipo, Ingestion, Egestion, Microplastic, Aurelia aurita, Ingestión, Marine pollution, Polyp, Contaminación marina, Microesfera, Medusa, Jellyfish, Microplástico
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