Annual migrations, diving behavior, and thermal biology of Atlantic bluefin tuna, Thunnus thynnus, on their Gulf of Mexico breeding grounds

2006 ◽  
Vol 151 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Steven L. H. Teo ◽  
Andre Boustany ◽  
Heidi Dewar ◽  
Michael J. W. Stokesbury ◽  
Kevin C. Weng ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Bluefin Tuna ◽  
Diving Behavior ◽  
Thunnus Thynnus ◽  
Thermal Biology ◽  
Atlantic Bluefin Tuna ◽  
Breeding Grounds

Oceanographic preferences of Atlantic bluefin tuna, Thunnus thynnus, on their Gulf of Mexico breeding grounds

2007 ◽  
Vol 152 (5) ◽  
pp. 1105-1119 ◽  
Author(s):  
Steven L. H. Teo ◽  
Andre M. Boustany ◽  
Barbara A. Block
Keyword(s):  
Gulf Of Mexico ◽  
Bluefin Tuna ◽  
Thunnus Thynnus ◽  
Atlantic Bluefin Tuna ◽  
Breeding Grounds

Active prey selection in developing larvae of Atlantic bluefin tuna (Thunnus thynnus) in spawning grounds of the Gulf of Mexico

2021 ◽  
Author(s):  
Akihiro Shiroza ◽  
Estrella Malca ◽  
John T Lamkin ◽  
Trika Gerard ◽  
Michael R Landry ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Prey Selection ◽  
Bluefin Tuna ◽  
Gut Contents ◽  
Physical Factors ◽  
Larval Rearing ◽  
Thunnus Thynnus ◽  
Small Copepod ◽  
Atlantic Bluefin Tuna ◽  
Larval Stages

Abstract Bluefin tuna spawn in restricted areas of subtropical oligotrophic seas. Here, we investigate the zooplankton prey and feeding selectivity of early larval stages of Atlantic bluefin tuna (ABT, Thunnus thynnus) in larval rearing habitat of the Gulf of Mexico. Larvae and zooplankton were collected during two multi-day Lagrangian experiments during peak spawning in May 2017 and 2018. Larvae were categorized by flexion stage and standard length. We identified, enumerated and sized zooplankton from larval gut contents and in the ambient community. Ciliates were quantitatively important (up to 9%) in carbon-based diets of early larvae. As larvae grew, diet composition and prey selection shifted from small copepod nauplii and calanoid copepodites to larger podonid cladocerans, which accounted for up to 70% of ingested carbon. Even when cladoceran abundances were <0.2 m−3, they comprised 23% of postflexion stage diet. Feeding behaviors of larvae at different development stages were more specialized, and prey selection narrowed to appendicularians and primarily cladocerans when these taxa were more abundant. Our findings suggest that ABT larvae have the capacity to switch from passive selection, regulated by physical factors, to active selection of presumably energetically optimal prey.

scholarly journals Seasonal Movements, Aggregations and Diving Behavior of Atlantic Bluefin Tuna (Thunnus thynnus) Revealed with Archival Tags

PLoS ONE ◽  
2009 ◽  
Vol 4 (7) ◽  
pp. e6151 ◽  
Author(s):  
Andreas Walli ◽  
Steven L. H. Teo ◽  
Andre Boustany ◽  
Charles J. Farwell ◽  
Tom Williams ◽  
...  
Keyword(s):  
Bluefin Tuna ◽  
Diving Behavior ◽  
Thunnus Thynnus ◽  
Seasonal Movements ◽  
Atlantic Bluefin Tuna ◽  
Archival Tags
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