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Oceanographic preferences of yellowfin tuna (Thunnus albacares) in warm stratified oceans: A remote sensing approach

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Relation https://eprints.cmfri.org.in/14284/
https://www.tandfonline.com/doi/full/10.1080/01431161.2019.1707903
https://doi.org/10.1080/01431161.2019.1707903
 
Title Oceanographic preferences of yellowfin tuna
(Thunnus albacares) in warm stratified oceans: A
remote sensing approach
 
Creator Kumar, Nimit
Masuluri, Nagaraja Kumar
Berger, Aaron M
Bright, Rose P
Prakash, Satya
Udaya Bhaskar, T V S
Srinivasa Kumar, T
Rohit, Prathibha
Tiburtius, A
Ghosh, Shubhadeep
Varghese, Sijo P
 
Subject Oceanography
Tuna fishery
Remote sensing
Tunas
Pelagic Fisheries
 
Description Yellowfin tuna (Thunnus albacares, Bonnaterre, 1788; YFT) face extensive
exploitation pressure worldwide owing to the attractive economics
of these fisheries. A better understanding of how oceanography
influences the distribution of YFT (or highly migratory species more
generally) will improve the ability for fisheries management policies to
achieve conservation (e.g., maintain a stocks reproductive capacity),
economic (e.g., maximize gross domestic product), and social (e.g.,
optimize successful fishing opportunities) objectives. Such ecosystembased
linkages, when combined with real-time remote sensing data,
provide the predictive framework for enhancing favourable fishing
opportunities and limiting excessive harvest. We examined factors
influencing YFT distribution and behaviour using pop-up satellite
archival tags and remotely sensed oceanographic data from two
regions in the northern Indian Ocean. Tagged individuals did not
exhibit significant deep diving or diurnal behaviour, and preferred
ambient temperatures of 26–30°C and 25–29°C in the Arabian Sea
(AS) and the Bay of Bengal (BoB), respectively. In general, tagged YFT
were found to be in waters with sea surface temperatures of 26–29°C,
60% of the time andwithin a sea surface height-anomaly of ±6 cm 70%
of the time. YFT avoided moving below the relatively shallow oxycline
depth, which is indicative of the stratified waters of the AS and the BoB.
Low dissolved oxygen levels are likely a limiting factor for tuna movement
given their high oxygen demand. The northern Indian Ocean
provides an opportunity to study climate impacts on fish distribution
and movement, and our findings provide a basis for understanding
how habitat and migratory patterns may be altered under climate
change.
 
Date 2020
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier https://eprints.cmfri.org.in/14284/1/International%20Journal%20of%20Remote%20Sensing_2020_Shubhadeep%20ghosh_Oceanographic%20preferences%20of%20yellowfin%20tuna%20%28Thunnus%20albacares%29%20in%20warm%20stratified%20oceans%20A%20remote%20sensing%20approach.pdf
Kumar, Nimit and Masuluri, Nagaraja Kumar and Berger, Aaron M and Bright, Rose P and Prakash, Satya and Udaya Bhaskar, T V S and Srinivasa Kumar, T and Rohit, Prathibha and Tiburtius, A and Ghosh, Shubhadeep and Varghese, Sijo P (2020) Oceanographic preferences of yellowfin tuna (Thunnus albacares) in warm stratified oceans: A remote sensing approach. International Journal of Remote Sensing, 41 (15). pp. 1-21.