Trophic interactions and metal transfer in marine ecosystems driven by the Peruvian scallop Argopecten purpuratus aquaculture

De Troch, M.; Ganoza, M.; De Boeck, G.; Miglio, M.; Loaiza, I.; Campos, D.; Cardenas Alayza, Susana; Alcazar, J.; Gómez-Sanchez, M.

dc.contributor.advisor	info:eu-repo/semantics/publishedVersion
dc.contributor.author	Loaiza, I.
dc.contributor.author	De Boeck, G.
dc.contributor.author	Alcazar, J.
dc.contributor.author	Campos, D.
dc.contributor.author	Cardenas Alayza, Susana
dc.contributor.author	Ganoza, M.
dc.contributor.author	Gómez-Sanchez, M.
dc.contributor.author	Miglio, M.
dc.contributor.author	De Troch, M.
dc.date.accessioned	2022-06-01T13:53:58Z
dc.date.available	2022-06-01T13:53:58Z
dc.date.issued	2022
dc.identifier.uri	https://hdl.handle.net/20.500.12866/11757
dc.description.abstract	This study investigates the trophic interactions and As and Cd transfer along seven marine ecosystems in Peru. Five of these ecosystems are driven by aquaculture of the Peruvian scallop Argopecten purpuratus. A southward increased gradient of δ15N was observed among the three examined regions along the Peruvian coast. The stable isotope analysis in R (SIAR)-stable isotope mixing models helped to clarify the feeding ecology of A. purpuratus and its important predators (e.g., Bursa ventricosa, Romaleon setosum). The food items of A. purpuratus can be ranked in decreasing order of importance: seston > sediment > particulate organic matter (POM) > brackish-and-fresh water POM input, while A. purpuratus itself was found to be the main prey item for predators. The highest trophic magnification factors (TMFs) were 1.46 and 1.07 for As and Cd, respectively, and were both found at the location in front of the Illescas Reserve Zone (northern Peru). Metal biomagnification and non-biomagnification effects were found in the Peruvian marine food webs, but A. purpuratus always fitted the trophic metal magnification or bio-dilution regression model as intermediate consumer and/or prey. The TMFs and linear metal relationships implied that As contamination is a serious concern in marine ecosystems in Peru.	en_US
dc.language.iso	eng
dc.publisher	Wiley
dc.relation.ispartofseries	Journal of the World Aquaculture Society
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject	biomagnification	en_US
dc.subject	metals	en_US
dc.subject	Peruvian ecosystems	en_US
dc.subject	scallop aquaculture	en_US
dc.subject	stable isotopes	en_US
dc.title	Trophic interactions and metal transfer in marine ecosystems driven by the Peruvian scallop Argopecten purpuratus aquaculture	en_US
dc.type	info:eu-repo/semantics/article
dc.identifier.doi	https://doi.org/10.1111/jwas.12822
dc.relation.issn	1749-7345