Kevin C. Weng

TL;DR: The results are consistent with two populations of bluefin tuna with distinct spawning areas that overlap on North Atlantic foraging grounds, and Restrictions on the time and area where longlining occurs would reduce incidental catch mortalities on western spawning grounds.

TL;DR: In this paper, double-tagging experiments were conducted on free-swimming salmon sharks Lamna ditropis and blue sharks Prionace glauca, tagged with satellite telemetry and pop-up satellite tags, which provided a direct comparison between Argos positions and geolocation estimates derived from light levels and sea surface temperatures (SSTs).

TL;DR: Satellite telemetry studies of 20 adult and sub-adult white sharks in the eastern North Pacific during 1999–2005 revealed long distance seasonal migrations from the coast of California to an offshore focal area 2,500 km west of the Baja Peninsula, as well as the Hawaii Islands.

TL;DR: It is demonstrated that the movement patterns, diving behavior, and thermal biology of Atlantic bluefin tuna change significantly at different stages of the breeding migration and can be used to define spawning location and timing.

TL;DR: It is shown that salmon sharks have a subarctic-to-subtropical niche, and they spend winter periods in waters as cold as 2° to 8°C, and functional assays and protein gels reveal that the expression of excitation-contraction coupling proteins is enhanced in salmon shark hearts, which may underlie the shark's ability to maintain heart function at cold temperatures.