The Slope Sea off the Northeast United States is a major spawning ground for Atlantic bluefin tuna (Thunnus thynnus), a new paper affirms. This finding likely has important implications for population dynamics and the survival of this fish, according to the paper, "Support for the Slope Sea as a major spawning ground for Atlantic bluefin tuna: evidence from larval abundance, growth rates, and particle-tracking simulations," published in the Canadian Journal of Fisheries and Aquatic Sciences.