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Changes in the diet of the native sea urchin Arbacia dufresnii at different scenarios of the Undaria pinnatifida invasion (Patagonia, Argentina) by Karen L. Castro; Lucía Epherra; María Paula Raffo; Enrique Morsan; Tamara Rubilar is a Environmental Science article available to read on EtoBox.
What is Changes in the diet of the native sea urchin Arbacia dufresnii at different scenarios of the Undaria pinnatifida invasion (Patagonia, Argentina) about?
Undaria pinnatifida is one of the most successful marine invasive species worldwide. Since its first detection in Nuevo Gulf (Argentina), changes in the species richness and diversity of native algae and macrofauna have been reported. Knowledge of the invasive alga-native grazer interaction is key to better understand ecosystem dynamics and the potential effects of Undaria on local food webs. The aim of this study was to compare the diet of the sea urchin Arbacia dufresnii, among different scenarios of invasion of Undaria in two northern Patagonian gulfs. To this end, we determined the relative contribution of kelp to the diet of the sea urchin by comparing the gut content and stable isotopes in different tissues of A. dufresnii from sites where the invasion of Undaria was advanced, relatively recent, or not recorded. Because A. dufresnii has a plastic feeding habit and Undaria represents a high input of algal biomass, our hypothesis was that A. dufresnii feeds on Undaria and that the contribution of the invasive kelp to the diet of the sea urchin will be greater according to the time elapsed since invasion. Our results confirmed that A. dufresnii fed on Undaria and assimilated in
Who reads Changes in the diet of the native sea urchin Arbacia dufresnii at different scenarios of the Undaria pinnatifida invasion (Patagonia, Argentina)?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Karen L. Castro; Lucía Epherra; María Paula Raffo; Enrique Morsan; Tamara Rubilar
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Environmental Science (Physical Sciences)