Effect of substances used in plastic processing on the carboxylesterase enzymes of the cnidarians Aurelia aurita and Cassiopea xamachana.
Author(s): Torreblanca A; Jimenez-Patiño, P; Roche M; Del Ramo, J; Solé M;
Presenter: Amparo Torreblanca
In the last decade, marine pollution by plastics and the effects they have on organisms has received much attention. In this aspect, the effects of plastics and their constituent substances have been less studied in the cnidarian group compared to other animal groups such as fish or mollusks. The common jellyfish (Aurelia aurita) is a cosmopolitan species found in waters all over the world while the inverted jellyfish (Cassiopea xamachana) is a species widely distributed in tropical and shallow subtropical marine habitats. Despite being considered invasive and exotic in many coastal habitats such as the Hawaiian Islands and the Mediterranean Sea, it is a key organism in many reef habitats such as the Caribbean Sea or the Gulf of Mexico. Unlike other scyphozoans, Cassiopea spp. are epibenthic, and incorporate the photosynthetic zooxanthella Symbiodinium within their mesoglea during the polyp stage. The aim of the study was to characterize the carboxylesterase enzymes of these two species using different substrates and to quantify the degree of inhibition of these enzymes in the presence of model inhibitors and substances used in the manufacture of plastics. The results obtained are discussed on the basis of the characteristics of each species and the presence or absence of endosymbionts in their mesoglea.The authors thank Fundación Oceanogràfic de la Comunitat Valenciana for providing all of specimens of jellyfish utilized in this study. This work has been supported by University of Valencia with the project ACCIONS ESPECIALS D ́INVESTIGACIÓ. 2019. UV-INV-AE19-1210476.
Keywords: carboxylesterase; jellyfish; plastic
Graduada em Ciências Biológicas pela Universidade Federal de São Carlos (1985) com mestrado em Ciências (Fisiologia Geral) pela Universidade de São Paulo (1990). Realizou o doutorado no Departamento de Fisiologia Geral do IBUSP e no Departamento de Zoologia da Universidade de Leicester, Inglaterra e...Saiba mais
2000-Present Professor Aquatic Ecotoxicology, University of California, Riverside, CA USA
1995-1999 Associate Professor Pharmacology and Environmental Toxicology, University of Mississippi, MS USA
1991-1995 Assistant professor Pharmacology and Toxicology, University of Arkansas for Medi...
Gisela de Aragão Umbuzeiro is a full professor at School of Technology – UNICAMP, Brazil and an adjunct professor at Wilson College of Textiles, NCSU, USA. She graduated in Biology at University of Campinas - UNICAMP (1979), Ph.D. in Genetics also at UNICAMP (1990). Worked for 22 years at the Enviro...Saiba mais
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