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Title: Ingestion of polyethylene microspheres occur only in presence of prey in the jellyfish Aurelia aurita
Authors: Romero Kutzner, Vanesa 
Tarí, Javier
Herrera Ulibarri, Alicia 
Martínez Sánchez, Ico 
Bondyale Juez, Daniel Rickue 
Gómez, May 
UNESCO Clasification: 240119 Zoología marina
330811 Control de la contaminación del agua
331210 Plásticos
Keywords: Jellyfish
Plastic contamination
Microplastic ingestion
Time of presence
Retention time, et al
Issue Date: 2022
Project: Estudio del Metabolismo de Medusas en aguas de Canarias 
Journal: Marine Pollution Bulletin 
Abstract: Microplastic ingestion was studied in A. aurita, a bloom-forming, circumglobal medusa. Here, we determined whether factors such as the concentration of polyethylene microspheres (75–90 μm) or the absence/presence of prey affect the ingestion, duration of microspheres in the gastrovascular cavity (time of presence), and retention time. The presence of polyethylene microspheres' was determined by exposing medusae during 480 min to three different treatments (5000, 10,000, 20,000 particles L−1), and was checked every 10 min to ascertain whether they had incorporated any. Preliminary results show that microsphere ingestion occurred only in the presence of prey (⁓294 Artemia nauplii L−1). The time of presence of microbeads in A. aurita increased (103, 177, and 227 min), with increasing microplastic concentration, and the microbeads were egested within 150 min. This study initiates the understanding of the potential implications that arise of the encounter between jellyfish and microplastic agglomerates, and with perspectives for future research
ISSN: 0025-326X
Source: Marine Pollution Bulletin [ISSN 0025-326X], n. 175, 113269
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