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Rouyer T, Bonhommeau S, Bernard S, Kerzerho V, Derridj O, Bjarnason Á, Allal H, Steffensen JF, Deguara S, Wendling B, Bal G, Thambithurai D, Mckenzie DJ. A NOVEL PROTOCOL FOR RAPID DEPLOYMENT OF HEART RATE DATA STORAGE TAGS IN ATLANTIC BLUEFIN TUNA THUNNUS THYNNUS REVEALS CARDIAC RESPONSES TO TEMPERATURE AND FEEDING. J Fish Biol 2023. [PMID: 37483116 DOI: 10.1111/jfb.15507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/13/2023] [Accepted: 07/19/2023] [Indexed: 07/25/2023]
Abstract
The Atlantic bluefin tuna (ABFT) is a highly prized species of large pelagic fish. Studies of their environmental physiology may improve understanding and management of their populations, but this is difficult for mature adults because of their large size. Biologging of heart rate holds promise in investigating physiological responses to environmental conditions in free-swimming fishes but it is very challenging to anaesthetise large ABFT for invasive surgery to place a tag in the body cavity near to the heart. We describe a novel method for rapid deployment of a commercially available heart rate tag (HR-tag) on ABFT, using an atraumatic trocar to implant it in the musculature associated with the cleithrum. We performed three sequential experiments to show that the tagging method 1) is consistently repeatable and reliable; 2) can be used successfully on commercial fishing boats and does not seem to affect fish survival, and 3) is effective for long-term deployments. In experiment 3, a tag logged heart rate over 80 days on a 60-kg ABFT held in a farm cage. The logged data showed that heart rate was sensitive to prevailing seasonal temperature and feeding events. At low temperatures, there were clear responses to feeding but these all disappeared above a threshold temperature of 25.5 °C. Overall, the results show that our method is simple, rapid and repeatable, and can be used for long term experiments to investigate physiological responses by large ABFT to environmental conditions. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- T Rouyer
- MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Sète, France
| | - S Bonhommeau
- IFREMER DOI, rue Jean Bertho, 97822 Le Port, La, Réunion
| | - S Bernard
- LIRMM, Univ. Montpellier, CNRS, Montpellier, France
| | - V Kerzerho
- LIRMM, Univ. Montpellier, CNRS, Montpellier, France
| | - O Derridj
- MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Sète, France
| | | | - H Allal
- University Hospital of Montpellier, Montpellier, France
| | - J F Steffensen
- Marine Biological Section, University of Copenhagen, Strandpromenaden 5, 3000 Elsinore, Denmark
| | - S Deguara
- AquaBioTech Group, 'Central Complex', Naggar Street, Targa Gap, Mosta MST 1761, MALTA, G.C
| | - B Wendling
- SATHOAN, 29, promenade J.B. Marty, 34200, Sète, France
| | - G Bal
- UMS PatriNat (OFB-CNRS-MNHN), 4 rue du Petit Château, 91800, Brunoy, France
| | - D Thambithurai
- MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Sète, France
| | - D J Mckenzie
- MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Sète, France
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Bonhommeau S, Le Pape O, Gascuel D, Blanke B, Tréguier AM, Grima N, Vermard Y, Castonguay M, Rivot E. Estimates of the mortality and the duration of the trans-Atlantic migration of European eel Anguilla anguilla leptocephali using a particle tracking model. J Fish Biol 2009; 74:1891-1914. [PMID: 20735679 DOI: 10.1111/j.1095-8649.2009.02298.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Using Lagrangian simulations, based on circulation models over three different hydroclimatic periods in the last 45 years in the North Atlantic Ocean, the trans-Atlantic migration of the European eel Anguilla anguilla leptocephali was simulated via the passive drift of particles released in the spawning area. Three different behaviours were modelled: drifting at fixed depth, undergoing a vertical migration or choosing the fastest currents. Simulations included mortality hypotheses to estimate a realistic mean migration duration and relative survival of A. anguilla larvae. The mean migration duration was estimated as 21 months and the mortality rate as 3.8 per year, i.e. < 0.2% of A. anguilla larvae may typically survive the trans-Atlantic migration.
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Affiliation(s)
- S Bonhommeau
- Agrocampus Ouest, UMR 985 INRA-Agrocampus Ouest Ecologie et Santé des Ecosystèmes, Laboratoire d'Ecologie Halieutique, Rennes Cedex, France.
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Moussa NO, Molnár G, Bonhommeau S, Zwick A, Mouri S, Tanaka K, Real JA, Bousseksou A. Selective photoswitching of the binuclear spin crossover compound {[Fe(bt)(NCS)2]2(bpm)} into two distinct macroscopic phases. Phys Rev Lett 2005; 94:107205. [PMID: 15783518 DOI: 10.1103/physrevlett.94.107205] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2004] [Indexed: 05/24/2023]
Abstract
The low-spin (LS-LS, S = 0) diamagnetic form of the binuclear spin crossover complex {[Fe(bt)(NCS)(2)](2)(bpm)} was selectively photoconverted into two distinct macroscopic phases at different excitation wavelengths (1342 or 647.1 nm). These long-lived metastable phases have been identified, respectively, as the symmetry-broken paramagnetic form (HS-LS, S = 2) and the antiferromagnetically coupled (HS-HS, S = 0) high-spin form of the compound. The selectivity may be explained by the strong coupling of the primary excited states to the paramagnetic state.
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Affiliation(s)
- N Ould Moussa
- Laboratoire de Chimie de Coordination, CNRS UPR-8241, 205 route de Narbonne, F-31077 Toulouse, France
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Jacquey M, Bonhommeau S, Bouchene MA. Experimental demonstration of phase control of dispersion effects for an ultrashort pulse train propagating in a resonant medium. Opt Lett 2003; 28:1272-1274. [PMID: 12885044 DOI: 10.1364/ol.28.001272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We present an experiment in which an ultrashort pulse train propagates resonantly through anoptically dense vapor of atomic rubidium. The sequence obtained from a Fabry-Perot interferometer comprises nearly 10 regularly time-delayed and mode-locked pulses. We show that a sequence with phase shift phi = 0[2pi] between two successive pulses propagates with important temporal distortion, whereas a sequence with phi = pi[2pi] experiences few propagation effects, thus leading for the first time to our knowledge to the possibility of phase control of dispersion effects for an ultrashort pulse train.
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Affiliation(s)
- M Jacquey
- Laboratoire de Collisions Agrégats Réactivité, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5589, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 4, France
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