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Electronic tagging and population structure of Atlantic bluefin tuna
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.
Tracking apex marine predator movements in a dynamic ocean
It is shown that top predators exploit their environment in predictable ways, providing the foundation for spatial management of large marine ecosystems, and critical habitats across multinational boundaries are identified.
Migratory Movements, Depth Preferences, and Thermal Biology of Atlantic Bluefin Tuna
The results obtained from tagging of Atlantic bluefin tuna with implantable archival and pop-up satellite archival tags provide insights into the seasonal movements and environmental preferences of this species.
Structural evidence for direct interaction between the molecular components of the transverse tubule/sarcoplasmic reticulum junction in skeletal muscle
- B. Block, T. Imagawa, K. Campbell, C. Franzini-armstrong
- BiologyJournal of Cell Biology
- 1 December 1988
The results suggest the presence of a large junctional complex spanning the two junctional membranes and intervening gap, which is an ideal candidate for a mechanical coupling hypothesis of excitation-contraction coupling at the triadic junction.
Migratory shearwaters integrate oceanic resources across the Pacific Ocean in an endless summer
- S. Shaffer, Y. Tremblay, D. Costa
- Environmental ScienceProceedings of the National Academy of Sciences
- 22 August 2006
The extraordinary transequatorial postbreeding migrations of a small seabird, the sooty shearwater, obtained with miniature archival tags that log data for estimating position, dive depth, and ambient temperature reveal that shearwaters fly across the entire Pacific Ocean in a figure-eight pattern while traveling 64,037 ± 9,779 km roundtrip, the longest animal migration ever recorded electronically.
Tracking the global footprint of fisheries
It is found that global patterns of fishing have surprisingly low sensitivity to short-term economic and environmental variation and a strong response to cultural and political events such as holidays and closures.
Philopatry and migration of Pacific white sharks
- S. Jorgensen, C. Reeb, B. Block
- Environmental ScienceProceedings of the Royal Society B: Biological…
- 7 March 2010
It is hypothesized that this strong homing behaviour of eastern Pacific white sharks has maintained the separation of a northeastern Pacific population following a historical introduction from Australia/New Zealand migrants during the Late Pleistocene.
Migration and habitat of white sharks (Carcharodon carcharias) in the eastern Pacific Ocean
- K. Weng, A. Boustany, P. Pyle, S. Anderson, Adam C. Brown, B. Block
- Environmental Science
- 17 July 2007
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.
Vertical and horizontal migrations by the jumbo squid Dosidicus gigas revealed by electronic tagging
Dosidicus gigas is a large and powerful oceanic squid that is economically valuable and eco- logically important in the eastern Pacific Ocean. We employed electronic tagging methods to provide the…
Depth and temperature of the blue marlin, Makaira nigricans, observed by acoustic telemetry
Monitoring of the depth, swimming speeds, body temperature and water temperature preference of six blue marlin near the Hawaiian islands in July and August 1989 found an initial rise in body temperature was associated with the anaerobic muscle activity during capture and is an indication of the physiological stress involved in capture.