INVESTIGADORES
PASO VIOLA Maria Natalia
artículos
Título:
Population variance in prey, diets and their macronutrient composition in an endangered marine predator, the Franciscana dolphin
Autor/es:
DENUNCIO, PABLO; PASO VIOLA, MARIA N.; MACHOVSKY-CAPUSKA, GABRIEL E.; RAUBENHEIMER, DAVID; BLASINA, GABRIELA; MACHADO, RODRIGO; POLIZZI, PAULA; GERPE, MARCELA; CAPPOZZO, HUMBERTO L.; RODRIGUEZ, DIEGO H.
Revista:
JOURNAL OF SEA RESEARCH
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2017
ISSN:
1385-1101
Resumen:
Disentangling the intricacies governing dietary breadth in wild predators is important for understanding their role in structuring ecological communities and provides critical information for the management and conservation of ecologically threatened species. Here we combined dietary analysis, nutritional composition analysis of prey, literature data and nutritional geometry (right-angled mixture triangle models -RMT-) to examine the diet of the most threatened small cetacean in the western South Atlantic Ocean, the Franciscana dolphin (Pontoporia blainvillei). We applied a recently developed extension of niche theory based on the RMT to help understand the dietary strategies of this species. Our results showed that across their range the Franciscanas consumed prey with variable protein-to-lipid energy ratios (LMM, p.
