BLUEFIN TUNA FEATURE STORY
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Northern Bluefin Tuna Thunnus orientalis
The successful deployment of implanted and pop-up satellite archival tags has enabled researchers to examine the movements of bluefin tunas in the Atlantic, Pacific and Southern oceans. These new techniques are providing the major advances that will be necessary to understand the distribution of tunas in relation to their changing physical and biological environments. Management agencies are now using electronic tagging data to develop movement models with improved estimates of the distribution of bluefin tuna based on age, season and primary productivity. As more environmental information is gathered and delivered from the tagged animals, new insights will be obtained about their individual behaviors, as well as how they respond to environmental variability on daily, seasonal, and inter-annual time scales
Researchers have deployed archival and PSAT tags on approximately XXX Pacific bluefin. TOPP researchers intend to tag 1000 bluefin and yellowfin tunas by 2010. The data derived from those tags will yield significant, new information about these species. New technology to ranch (hold and grow out) wild caught tunas for market located along the western North American coast is enabling large-scale tagging of bluefin schools. Bluefin tuna tagged with PSAT tags and released from a pen in Monterey all migrated south along the California and Mexican continental shelf. A few traveled across the Pacific to Japan and returned.
ATuna: Global Tuna Business (go to: Tuna Species Guide)
Fishery Resources Monitoring System
Monterey Bay Aquarium Online Field Guide
National Coalition for Marine Conservation (search for Pacific bluefin tuna)
Dr. Barbara Block - Group Leader
Hopkins Marine Station
Stanford University
Pacific Grove, California USA
bblock@stanford.edu
John Childers
NMFS Southwest Science Center
La Jolla, California USA
john.Childers@noaa.gov
Dr. Heidi Dewar
Census of Marine Life
Tagging of Pacific Pelagics
Inter-American Tropical Tuna Commission
La Jolla, California USA
Heidi_Dewar@alumni.ucsd.edu
Charles Farwell
Tuna Research and Conservation Center
Monterey Bay Aquarium
Monterey, California USA
cfarwell@mbayaq.org
Dr. John Gunn
CSIRO Division of Marine Research
Hobart, Australia
John.Gunn@marine.csiro.au
Takashi Kitagawa
Far Seas Research Lab
Tokyo, Japan
takashik@ori.u-tokyo.ac.jp
Toby Patterson
CSIRO Division of Marine Research
Hobart, Australia
Toby.Patterson@csiro.au
Dr. Jeff Polovina
National Marine Fisheries Service
Southwest Fisheries Center
Honolulu, Hawaii USA
Jeffrey.Polovina@noaa.gov
Dr. Kurt Schaefer
Inter-American Tropical Tuna Commission
La Jolla, California USA
kschaefer@iattc.org
George Shillinger
Hopkins Marine Station
Stanford University
Pacific Grove, California USA
gschillinger@stanford.edu
Tierney Thys
Sea Studios Foundation
Monterey, California USA
tierney@mbay.net
Tirion here: Pacific bluefin tuna. In the map on the left, I’m the light blue tuna that pops out of the bluefin scrum in February 2003, swims to Japan, then swims BACK to California in July 2003. Seven months later, I head to Japan again. My tag recorded how far I swam: more than 45,000 miles. Most humans never journey that far in a lifetime.
We bluefin are warm-blooded giants: up to 1,500 pounds (684 kg) and 15 feet (4.58 meters) long. That’s another human longer than the tallest human. In hot pursuit of a tasty meal of herring, anchovies, squid or eels, we hit speeds up to 60 mph and dive to 600 feet.
Our tasty dark red flesh makes us the most expensive fish in the world. Someone paid $174,000 for one of us in 2001. It’s no surprise that we’re being overfished. My Atlantic cousins -- Thunnus thynnus -- are in dire straits. Researchers, including those at TOPP, are trying to get a handle on us Pacific bluefin, to figure out how our populations are coping.
My Posts:I thought that it might be exciting for our readers to provide an angler’s perspective on the fishing and tag deployment experience off Greymouth, New Zealand. I received the following email fr
After two intensive weeks of fishing, the 2008 bluefin tuna satellite tagging program had made good strides towards the goal of deploying 25 pop-up satellite tags. Although New Zeala
A race organizer of The Great Turtle Race.