Results 171 to 180 of about 3,889 (214)

Evidence for fine geographical scale heterogeneity in gene frequencies in yellowfin tuna (Thunnus albacares) from the north Indian Ocean around Sri Lanka

Fisheries Research, 2008
Yellowfin tuna are currently considered by the member nations of the Indian Ocean Tuna Commission to constitute a single stock in the Indian Ocean due to a lack of knowledge about yellowfin tuna population structure in this region.
Sudath T Dammannagoda, David A Hurwood, Peter B Mather   +2 more
exaly   +2 more sources

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Can Purse Seiners Target Yellowfin Tuna?

Land Economics, 1994
Both purse seine and longline fleets exploit yellowfin tuna in the western Pa- cific region. Management options available to achieve the optimal allocation of the yellowfin stock depend on whether purse seiners can con- trol the species mix of their catch by targeting their fishing effort.
Campbell, H. F., Nicholl, R. B.
openaire   +4 more sources

Geomagnetic field detection by yellowfin tuna

OCEANS 82, 1982
Yellowfin tuna (Thunnus albacares) learned to discriminate between two Earth-strength magnetic fields. In addition, magnetite was localized within the ethmoid bone complex of the skull. The easily-conditioned response to magnetic field stimuli indicate that the tunas possess a geomagnetic sense, while the presence of magnetite suggests a mechanism for ...
M. Walker, A. Dizon, J. Kirschvink
openaire   +1 more source

Thermoregulation in Yellowfin Tuna, Thunnus albacares

Physiological Zoology, 1979
To determine their capacity for thermoregulation, yellowfin tuna, Thunnus albacares, were subjected to a series of 12-h periods at $T_{a}'s$ of 20, 25, and 30 C. Muscle temperature, measured with an ultrasonic transmitter attached to the fish, and swim speed were simultaneously monitored.
Andrew E. Dizon, Richard W. Brill
openaire   +1 more source

Genomic resources for the Yellowfin tuna Thunnus albacares

Molecular Biology Reports
The Yellowfin tuna (Thunnus albacares) is a large tuna exploited by major fisheries in tropical and subtropical waters of all oceans except the Mediterranean Sea. Genomic studies of population structure, adaptive variation or of the genetic basis of phenotypic traits are needed to inform fisheries management but are currently limited by the lack of a ...
Pavel V. Dimens, Kenneth L. Jones, Daniel Margulies, Vernon Scholey, Susana Cusatti, Brooke McPeak, Tami E. Hildahl, Eric A. E. Saillant   +7 more
openaire   +2 more sources

Characterization of Quality Deterioration in Yellowfin Tuna

Journal of Food Science, 1987
ABSTRACT The spoilage pattern of thawed yellowfin tuna carcasses was examined. After five days storage at 10° and 18°C, bacterial counts were low (< 10 3 ) although visible softening of the flesh was apparent.
T.A. GILL, J.W. THOMPSON, S. GOULD, D. SHERWOOD   +3 more
openaire   +1 more source

Separation of proteases from yellowfin tuna spleen by ultrafiltration

Bioresource Technology, 2006
Separation of protease, trypsin and chymotrypsin from yellowfin tuna spleen extract by ultrafiltration (UF) using regenerated cellulose membranes with molecular weight cut off (MWCO) 30 and 100 kDa was studied. The 100 kDa membrane had a higher transmission of enzymes than that of the 30 kDa membrane.
Zhenyu, Li, Wirote, Youravong, Aran, H-Kittikun   +2 more
openaire   +2 more sources

Swimming Speeds of Yellowfin and Skipjack Tuna

Transactions of the American Fisheries Society, 1966
Abstract Five hundred ten measurements of swimming speeds of skipjack tuna (Euthynnus pelamis) from four schools and 33 of yellowfin tuna (Thunnus albacares) from one school were made from underwater motion-picture records obtained at sea. The relation of swimming speed to rate of tail beats is described for yellowfin averaging 51.9 cm long and for ...
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On the Blood Types of Yellowfin and Bigeye Tuna

The American Naturalist, 1962
This work was undertaken to identify subpopulations of tunas by means of serological methods. Information concerning the blood types of albacore has been reported previously, (Suzuki, Shimizu and Morio, 1958; Suzuki, Morio and Mimoto, 1959). In these papers we reported two kinds of antigen, Tg1 and Tg2, and showed that albacore could be classified into
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Investing in yellowfin tuna: the economics of conservation [PDF]

, 1994
Yellowfin tuna are harvested as juveniles by purse-seiners and as adults by long-liners. The allocation of the yellowfin stock between these two gear types can be treated as an Investment decision. A framework for making such decisions, Incorporating biological and economic considerations, is presented and applied.
openaire   +4 more sources