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Keywords: red muscle
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Journal Articles
J Exp Biol jeb.242487.
Published: 04 June 2021
... strips and myocardial trabeculae, and efficiency (net work/energy consumed) was measured for trabeculae, from cold (6 o C) and warm (15 o C) acclimated fish at temperatures from 2-26 o C. The mass-specific net power produced by char red muscle was greater than in salmon, by 2-5 fold depending on test...
Journal Articles
J Exp Biol (2016) 219 (24): 3875–3883.
Published: 15 December 2016
... Nitrate reduction Nitric oxide Nitrite Red muscle Author contributions M.N.H., F.B.J. and J.O.L. conceived and designed the experiments; M.N.H., F.B.J., M.F., A.F. and N.M.G.C. performed the experiments; M.N.H., F.B.J., M.F., A.F. and N.M.G.C. analyzed the data; M.N.H. and F.B.J. wrote the...
Journal Articles
J Exp Biol (2010) 213 (11): 1921–1929.
Published: 01 June 2010
... conclusion, our most novel finding is that red fibres from dogfish relax more quickly as the series of contractions progresses. The difference in relaxation between white and red muscle fibres is a major factor responsible for the rapid drop in power from white fibres that does not occur in red fibres. Since...
Journal Articles
J Exp Biol (2009) 212 (21): 3564–3575.
Published: 01 November 2009
... lateral red muscle( b =0.5). Although oxidative enzymes showed negative allometry in red muscle ( b =–0.01 to –0.02), mass-specific myoglobin content scaled positively ( b =0.7). Capillary to fibre ratio of red muscle was higher in larger (1.42±0.15) than smaller (1.20±0.15)fish, suggesting progressive...
Journal Articles
J Exp Biol (2008) 211 (10): 1603–1611.
Published: 15 May 2008
... along the body at a relatively high velocity of 1.7 L per tail beat period, and a significant phase shift(31±4°) occurred between muscle shortening and local midline curvature, both suggesting red muscle power is directed posteriorly, rather than causing local body bending, which is a hallmark of...
Journal Articles
J Exp Biol (2007) 210 (22): 4016–4023.
Published: 15 November 2007
...Leonardo Magnoni; Jean-Michel Weber SUMMARY Fish endurance swimming is primarily powered by lipids supplied to red muscle by the circulation, but the mechanism of delivery remains unknown. By analogy to mammals, previous studies have focused on non-esterified fatty acids (NEFA bound to albumin...
Journal Articles
J Exp Biol (2007) 210 (7): 1194–1203.
Published: 01 April 2007
..., Canada (e-mail: shadwick@zoology.ubc.ca ) 23 1 2007 © The Company of Biologists Limited 2007 2007 red muscle temperature contractile properties work loop lamnid Isurus Triakis The leopard shark Triakis semifasciata and the shortfin mako Isurus oxyrinchus...
Journal Articles
J Exp Biol (2005) 208 (22): 4255–4261.
Published: 15 November 2005
... a similar amount of RM. However, A. superciliosus and A. pelagicus differ from A. vulpinus in that they do not possess the medial and anterior RM arrangement that would likely facilitate metabolic heat conservation (RM endothermy). Table 1. Shark fork length ( FL ), body mass, red muscle (RM...
Journal Articles
J Exp Biol (2004) 207 (17): 2979–2990.
Published: 01 August 2004
...-coasting began and the activity of pyruvate dehydrogenase (PDH) in red muscle (both caudal and central positions). PDH activity may limit the rate of oxidative ATP production by red muscle. The activity of cytochrome c oxidase in rostral white muscle was the strongest correlate of sprint swimming...
Journal Articles
J Exp Biol (2003) 206 (16): 2831–2843.
Published: 15 August 2003
... University, Ogden, UT 84408-2505, USA (e-mail: dbernal@weber.edu ) 8 5 2003 © The Company of Biologists Limited 2003 2003 lamnid shark tuna myotome red muscle aerobic capacity myoglobin muscle ultrastructure scaling allometry Lamnidae Scombridae Isurus Lamna Alopias...
Journal Articles
J Exp Biol (2003) 206 (3): 503–511.
Published: 01 February 2003
... explain such links. The condition factor [(somatic mass × fork length -3 )×100] of starved cod was 0.54±0.1 whereas that of fed cod was 0.81±0.1. In white and red muscle, we measured four glycolytic enzymes: phosphofructokinase (PFK), pyruvate kinase (PK), creatine kinase (CK) and lactate dehydrogenase...
Journal Articles
J Exp Biol (2002) 205 (14): 2067–2077.
Published: 15 July 2002
...Jeff G. Richards; Ashley J. Mercado; Cheryl A. Clayton; George J. F. Heigenhauser; Chris M. Wood SUMMARY A biochemical approach was employed to examine the oxidative utilization of carbohydrate and lipid in red muscle of rainbow trout ( Oncorhynchus mykiss ) during sustained swimming at 30 and 60...
Journal Articles
J Exp Biol (2002) 205 (11): 1585–1595.
Published: 01 June 2002
...F. Lou; N. A. Curtin; R. C. Woledge SUMMARY Maximum isometric tetanic force produced by bundles of red muscle fibres from dogfish, Scyliorhinus canicula (L.), was 142.4±10.3 kN m -2 ( N =35 fibre bundles); this was significantly less than that produced by white fibres 289.2±8.4 kN m -2 ( N =25...
Journal Articles
J Exp Biol (2002) 205 (2): 189–200.
Published: 15 January 2002
...Douglas A. Syme; Robert E. Shadwick SUMMARY The mechanical power output of deep, red muscle from skipjack tuna ( Katsuwonus pelamis ) was studied to investigate (i) whether this muscle generates maximum power during cruise swimming, (ii) how the differences in strain experienced by red muscle at...
Journal Articles
J Exp Biol (2001) 204 (23): 4043–4054.
Published: 01 December 2001
...Diego Bernal; Chugey Sepulveda; Jeffrey B. Graham SUMMARY The mako shark ( Isurus oxyrinchus ) has specialized vascular networks (retia mirabilia) forming counter-current heat exchangers that allow metabolic heat retention in certain regions of the body, including the aerobic, locomotor red muscle...
Journal Articles
J Exp Biol (2001) 204 (13): 2221–2230.
Published: 01 July 2001
... anguilla swimming muscle mechanics red muscle white muscle kinetics power work. Undulatory swimming fish use a backward-travelling wave of lateral curvature to propel themselves through the water. This mechanical wave corresponds to the occurrence of rhythmic, nearly sinusoidal, changes in...