Genyffer Troina

Postdoctoral Research Fellow

Research Unit

Pelagic Ecosystems Lab


Ph.D., Biological Oceanography (Universidade Federal do Rio Grande, Brazil, & Vrije Universiteit Brussel, Belgium)
M.S., Marine and Lacustrine Science and Management (Vrije Universiteit Brussel, Universiteit Gent, & Universiteit Antwerpen, Belgium)
BSc, Biological Sciences (Universidade Federal do Rio Grande, Brazil)

Contact Information

Twitter: @GenyfferTroina

Research Interests

I am interested in investigating the trophic and spatial ecology of marine top predators. I have been applying natural chemical tracers to learn about the foraging ecology and habitat use by marine mammals, how sympatric cetacean species compete for available resources, and how human-induced changes can affect the structure and dynamics of marine pelagic ecosystems.


As I grew up in a coastal city in southern Brazil, the sea, the marine ecosystems and particularly, marine mammals, have always fascinated me. When I was about 12 years old I had the opportunity to participate in a workshop in the oceanographic museum in Rio Grande (my home town), where I had the change to learn about the coastal and marine ecosystems of southern Brazil, their amazing marine life, and the challenges that they were facing as a result of human actions. I think that this is what drove me to pursue a career in marine sciences. I have been particularly interested in learning about the trophic ecology of the marine megafauna, how their feeding behaviour affects their spatial distribution and how environmental changes will affect their survival.

Selected publications:

Troina GC, Riekenberg P, Van Der Meer MTJ, Botta S, Dehairs F, Secchi ER (2021) Combining isotopic analysis of bulk-skin and individual amino acids to investigate the trophic position and foraging areas of multiple cetacean species in the western South Atlantic. Environmental Research. 201: 111610.

Troina GC, Botta S, Dehairs F, Di Tullio JC, Elskens M, Secchi ER (2020) Skin δ13C and δ15N reveal spatial and temporal patterns of habitat and resource use by free-ranging odontocetes from the southwestern Atlantic Ocean. Marine Biology. 167(12).

Troina GC, Dehairs F, Botta S, Di Tullio JC, Elskens M, Secchi ER (2020) Zooplankton-based δ13C and δ15N isoscapes from the outer continental shelf and slope in the subtropical western South Atlantic. Deep Sea Research Part I. 159: 103235.

ResearchGate: ResearchGate