Stable isotope analysis indicates resource partitioning and trophic niche overlap in larvae of four tuna species in the Gulf of Mexico

Summary

Tunas (family Scombridae) are epipelagic marine fishes that support lucrative commercial and recreational fisheries throughout tropical and temper-ate waters of the world (Block & Stevens 2001). The tropical tunas Katsuwonus pelamis (skipjack) and Auxis rochei (bullet tuna) are found in warm equatorial ecosystems, while Thunnus thynnus (Atlantic bluefin tuna) is a temperate species (Fromentin &