QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Dewar, H. Articles by Brill, R. Search for Related Content PubMed PubMed Citation Articles by Dewar, H. Articles by Brill, R.

Journal of Experimental Biology, Vol 192, Issue 1 33-44, Copyright © 1994 by Company of Biologists

JOURNAL ARTICLES

STUDIES OF TROPICAL TUNA SWIMMING PERFORMANCE IN A LARGE WATER TUNNEL - THERMOREGULATION

H Dewar, J Graham and R Brill

The body temperatures (Tb) of nine yellowfin tuna (Thunnus albacares) were monitored while fish swam in a large water tunnel at controlled velocities (U) and ambient temperatures (Ta). Monitoring Tb during step changes in Ta at constant U permitted estimation of the thermal rate coefficient (k), an index of heat transfer. In the yellowfin, k is dependent on both Ta and the direction of the thermal gradient (i.e. whether Ta is greater or less than Tb). Modulation of k in response to Ta was further demonstrated during tests in which U was varied; the elevation of Tb in response to equal increases in U was 3&shy;4 times less at 30 C than at 25 and 20 C. These experiments demonstrate that the yellowfin tuna can modulate heat transfer. This ability could prevent overheating during intense activity, retard heat loss during a descent into cool water and permit increased heat gain upon returning to warm surface waters (i.e. when Tb<Ta).

This article has been cited by other articles:

				J. M. Blank, J. M. Morrissette, C. J. Farwell, M. Price, R. J. Schallert, and B. A. Block Temperature effects on metabolic rate of juvenile Pacific bluefin tuna Thunnus orientalis J. Exp. Biol., December 1, 2007; 210(23): 4254 - 4261. [Abstract] [Full Text] [PDF]

				H. Malte, C. Larsen, M. Musyl, and R. Brill Differential heating and cooling rates in bigeye tuna (Thunnus obesus Lowe): a model of non-steady state heat exchange J. Exp. Biol., August 1, 2007; 210(15): 2618 - 2626. [Abstract] [Full Text] [PDF]

				T. D. Clark and R. S. Seymour Cardiorespiratory physiology and swimming energetics of a high-energy-demand teleost, the yellowtail kingfish (Seriola lalandi) J. Exp. Biol., October 1, 2006; 209(19): 3940 - 3951. [Abstract] [Full Text] [PDF]

				B. P. Wallace, C. L. Williams, F. V. Paladino, S. J. Morreale, R. T. Lindstrom, and J. R. Spotila Bioenergetics and diving activity of internesting leatherback turtles Dermochelys coriacea at Parque Nacional Marino Las Baulas, Costa Rica J. Exp. Biol., October 15, 2005; 208(20): 3873 - 3884. [Abstract] [Full Text] [PDF]

				J. B. Graham and K. A. Dickson Tuna comparative physiology J. Exp. Biol., November 1, 2004; 207(23): 4015 - 4024. [Abstract] [Full Text] [PDF]

				C. Larsen, H. Malte, and R. E. Weber ATP-induced Reverse Temperature Effect in Isohemoglobins from the Endothermic Porbeagle Shark (Lamna nasus) J. Biol. Chem., August 15, 2003; 278(33): 30741 - 30747. [Abstract] [Full Text] [PDF]

				S. L. Katz Design of heterothermic muscle in fish J. Exp. Biol., August 1, 2002; 205(15): 2251 - 2266. [Abstract] [Full Text] [PDF]

				Estimating body mass from silhouettes: testing the assumption of elliptical body cross-sections Paleobiology, December 1, 2001; 27(4): 735 - 750.

				D. Bernal, C. Sepulveda, and J. B. Graham Water-tunnel studies of heat balance in swimming mako sharks J. Exp. Biol., January 12, 2001; 204(23): 4043 - 4054. [Abstract] [Full Text] [PDF]