Swimming Behavior of Juvenile Yellowfin Tuna (Thunnus albacares) Around Fish Aggragate Devices (F.A.D.S) in the Philippines

2010 ◽  
pp. 121-124
Author(s):  
Y. Mitsunaga ◽  
R. Babaran ◽  
C. Endo ◽  
K. Anraku
Keyword(s):  
The Philippines ◽  
Yellowfin Tuna ◽  
Swimming Behavior ◽  
Thunnus Albacares

Vertical Movements, Behavior and Habitat Utilization of Adult Yellowfin Tuna (Thunnus albacares) Tagged in West Philippine Sea, Mindoro Island, Philippines

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Edison D. Macusi ◽  
Ricardo P. Babaran ◽  
Jose T. Ingles
Keyword(s):  
Total Duration ◽  
The Philippines ◽  
Habitat Utilization ◽  
Yellowfin Tuna ◽  
Thunnus Albacares ◽  
Vertical Movements ◽  
Deep Dive ◽  
Philippine Sea ◽  
West Philippine Sea ◽  
Mindoro Island

This paper describes the vertical movements, behavior and habitat utilization of an electronically tagged adult yellowfin tuna (Thunnus albacares) after 17 days of liberty in the Philippines based on analyses of 23,845 datapoints recorded from a recovered electronic popup tag. The exhaustive set provides a way to describe the vertical movement as well as a range of behaviors exhibited by the fish. We used the daily time records of depth and temperature from the vertical dives of the fish at different times of the day (nocturnal, dawn, diurnal, dusk) to describe fish behavior and to characterize its three deep dives. The fish stayed 23% and 24% of its time at warmer waters of 28 0C and 30 0C. It also spent 15% of its time at 26 0C and 10% of its time at colder waters of 20 0C and 22 0C. The daily differences in temperatures fluctuated from 12.10C to 30.1 0C with the daily average temperature of 24.2 0C. Swimming speeds determined show the maximum vertical ascent speed that the fish registered reached 1.53m/s swimming from a depth of 195m to 104m during a dusk. The maximum vertical descent speed reached 1.38m/s from a depth of 78m down to 161m. The deepest dive of the fish started from a U-shaped diving profile that lasted for almost 32 minutes and then followed by another U-shaped dive for 12 minutes before a deep dive and fast vertical ascent. The total duration of its dives differ with water depth: 0-50m (1.89 hours), 50-75m (4.78 hours), 75-100m (3.35 hours), 100-125m (1.69 hours), 125-150m (1.69 hours). Such swimming behavior provides valuable information on the vulnerability of tunas particularly the juvenile fishery.   Keywords - Archival tag, fish aggregating device (FAD), Mindoro Island, West Philippine Sea, Yellowfin tuna, Philippines

scholarly journals Association of early juvenile yellowfin tuna Thunnus albacares with a network of payaos in the Philippines

2011 ◽  
Vol 78 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Yasushi Mitsunaga ◽  
Chikayuki Endo ◽  
Kazuhiko Anraku ◽  
Cornelio M. Selorio ◽  
Ricardo P. Babaran
Keyword(s):  
The Philippines ◽  
Yellowfin Tuna ◽  
Thunnus Albacares ◽  
Early Juvenile

scholarly journals Association of early juvenile yellowfin tuna Thunnus albacares with a network of payaos in the Philippines

2018 ◽  
Vol 84 (4) ◽  
pp. 589-589
Author(s):  
Yasushi Mitsunaga ◽  
Chikayuki Endo ◽  
Kazuhiko Anraku ◽  
Cornelio M. Selorio Jr. ◽  
Ricardo P. Babaran
Keyword(s):  
The Philippines ◽  
Yellowfin Tuna ◽  
Thunnus Albacares ◽  
Early Juvenile

Ontogenetic changes in cutaneous and branchial ionocytes and morphology in yellowfin tuna (Thunnus albacares) larvae

2018 ◽  
Vol 189 (1) ◽  
pp. 81-95 ◽  
Author(s):  
Garfield T. Kwan ◽  
Jeanne B. Wexler ◽  
Nicholas C. Wegner ◽  
Martin Tresguerres
Keyword(s):  
Yellowfin Tuna ◽  
Thunnus Albacares ◽  
Ontogenetic Changes

Extraction optimization and properties of collagen from yellowfin tuna (Thunnus albacares) dorsal skin

2008 ◽  
Vol 22 (5) ◽  
pp. 879-887 ◽  
Author(s):  
Jin-Wook Woo ◽  
Sung-Jae Yu ◽  
Seung-Mock Cho ◽  
Yang-Bong Lee ◽  
Seon-Bong Kim
Keyword(s):  
Yellowfin Tuna ◽  
Thunnus Albacares ◽  
Dorsal Skin ◽  
Extraction Optimization

Exploitation and movements of yellowfin tuna (Thunnus albacares) and bigeye tuna (T. obesus) tagged in the north-western Coral Sea

1998 ◽  
Vol 49 (6) ◽  
pp. 475 ◽  
Author(s):  
John Hampton ◽  
John Gunn
Keyword(s):  
Seasonal Pattern ◽  
Yellowfin Tuna ◽  
Thunnus Albacares ◽  
Bigeye Tuna ◽  
Catch Per Unit Effort ◽  
The North ◽  
Coral Sea ◽  
Release Area ◽  
Seasonal Signal ◽  
North Western

Yellowfin tuna (Thunnus albacares) and bigeye tuna (T. obesus) were tagged and released in the north-western Coral Sea off northern Queensland in 1991 and 1992. Over the next five years, recaptures were reported by Australian longline vessels based in Cairns and fishing in the release area, and by industrial tuna fleets fishing in the adjacent western Pacific region, thus demonstrating clear links between the tuna stocks in these areas. Some southerly movements of yellowfin, in particular, further suggested links with stocks supporting the longline fishery in the south-eastern Australian Fishing Zone. Bigeye tuna tag returns and catch per unit effort by Cairns-based longliners showed a strong seasonal signal, peaking in mid year. Yellowfin tag-return data displayed a similar, but weaker, seasonal pattern. The data were analysed by use of tag-attrition models with seasonally variable catchability and with two assumptions regarding changes in targeting of the two species by longliners during the study. Under both assumptions, the local exploitation rates for yellowfin are low: about 0.07 in 1996. For bigeye, the local exploitation rate in 1996 may have been as high as 0.30, warranting a cautious approach to further fishery expansion in this area.

scholarly journals Reproductive potential of Yellowfin Tuna (Thunnus albacares) in the western Indian Ocean

2013 ◽  
Vol 111 (3) ◽  
pp. 252-264 ◽  
Author(s):  
Iker Zudaire ◽  
Hilario Murua ◽  
Maitane Grande ◽  
Nathalie Bodin
Keyword(s):  
Indian Ocean ◽  
Reproductive Potential ◽  
Western Indian Ocean ◽  
Yellowfin Tuna ◽  
Thunnus Albacares
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