Cardiac growth, myoglobin, proteins and DNA in developing tuna (Thunnus thynnus thynnus L.)

Juvenile-specific high heat production contributes to the initial step of endothermic development in Pacific bluefin tuna

“…( Table 2 ). The relative ventricular mass of tunas ( range: 280 g–37 kg) ranges from 0.2% to 0.4% ( Poupa et al, 1981 ; Brill and Bushnell, 1991 ; Graham and Dickson, 2001 ; Blank et al, 2004 ), in agreement with our results and notably higher than that of ectothermic fish species (2–2000 g), which ranges from 0.07% to 0.17% ( Driedzic and Stewart, 1982 ; Santer et al, 1983 ; Sidell and Driedzic, 1985 ; Farrell et al, 1988 ). Additionally, the proportion of red muscle mass was 6.07% ± 1.79% (mean ± s.d.)…”

Juvenile-specific high heat production contributes to the initial step of endothermic development in Pacific bluefin tuna

“…( Table 2 ). The relative ventricular mass of tunas ( range: 280 g–37 kg) ranges from 0.2% to 0.4% ( Poupa et al, 1981 ; Brill and Bushnell, 1991 ; Graham and Dickson, 2001 ; Blank et al, 2004 ), in agreement with our results and notably higher than that of ectothermic fish species (2–2000 g), which ranges from 0.07% to 0.17% ( Driedzic and Stewart, 1982 ; Santer et al, 1983 ; Sidell and Driedzic, 1985 ; Farrell et al, 1988 ). Additionally, the proportion of red muscle mass was 6.07% ± 1.79% (mean ± s.d.)…”

Mitochondrial metabolism of cardiac and skeletal muscles from a fast (Katsuwonus pelamis) and a slow (Cyprinus carpio) fish

“…Mass alone affords tuna a 5-fold advantage in oxidative capacity per kilogram of body mass relative to carp (4.0 vs. 0.76 g ventriclelkg). Skipjack tuna ventricular mass is higher than in most fish species (Poupa et al 1981;Side11 et al 1987), close to the range found in mammals (Poupa and Ostadal 1969;Driedzic et al 1987). Higher mitochondrial capacity per gram of ventricle is also obvious in tuna, but this is of lesser quantitative importance than the increased ventricle mass.…”

Variation in temperature tolerance among families of Atlantic salmon ( Salmo salar ) is associated with hypoxia tolerance, ventricle size and myoglobin level

“…Both functions could be extremely beneficial if oxygen supply to the heart does indeed become problematic at high temperature, which could then extend the heart's capacity to support aerobic activity at elevated temperatures as well as temperature tolerance. Poupa et al (Poupa et al, 1981) observed that the Mb level increased with size in tuna, Thunnus thynnus, and that this rate of Mb increase was elevated as the fish grew bigger, also supporting the function of Mb in facilitating the diffusion of the oxygen to tissues as the diffusion distance increases with the increased size of fish. High Mb levels have also been shown to be connected to elevated myocardial performance in hypoxic conditions (Driedzic et al, 1982), although there are also studies showing that acclimation to hypoxic conditions, for instance, does not increase the Mb level in the heart, even though it does in other tissues (e.g.…”

Juvenile-specific high heat production contributes to the initial step of endothermic development in Pacific bluefin tuna

“…( Table 2 ). The relative ventricular mass of tunas ( range: 280 g–37 kg) ranges from 0.2% to 0.4% ( Poupa et al, 1981 ; Brill and Bushnell, 1991 ; Graham and Dickson, 2001 ; Blank et al, 2004 ), in agreement with our results and notably higher than that of ectothermic fish species (2–2000 g), which ranges from 0.07% to 0.17% ( Driedzic and Stewart, 1982 ; Santer et al, 1983 ; Sidell and Driedzic, 1985 ; Farrell et al, 1988 ). Additionally, the proportion of red muscle mass was 6.07% ± 1.79% (mean ± s.d.)…”

Mitochondrial metabolism of cardiac and skeletal muscles from a fast (Katsuwonus pelamis) and a slow (Cyprinus carpio) fish

“…Mass alone affords tuna a 5-fold advantage in oxidative capacity per kilogram of body mass relative to carp (4.0 vs. 0.76 g ventriclelkg). Skipjack tuna ventricular mass is higher than in most fish species (Poupa et al 1981;Side11 et al 1987), close to the range found in mammals (Poupa and Ostadal 1969;Driedzic et al 1987). Higher mitochondrial capacity per gram of ventricle is also obvious in tuna, but this is of lesser quantitative importance than the increased ventricle mass.…”

Variation in temperature tolerance among families of Atlantic salmon ( Salmo salar ) is associated with hypoxia tolerance, ventricle size and myoglobin level

“…Both functions could be extremely beneficial if oxygen supply to the heart does indeed become problematic at high temperature, which could then extend the heart's capacity to support aerobic activity at elevated temperatures as well as temperature tolerance. Poupa et al (Poupa et al, 1981) observed that the Mb level increased with size in tuna, Thunnus thynnus, and that this rate of Mb increase was elevated as the fish grew bigger, also supporting the function of Mb in facilitating the diffusion of the oxygen to tissues as the diffusion distance increases with the increased size of fish. High Mb levels have also been shown to be connected to elevated myocardial performance in hypoxic conditions (Driedzic et al, 1982), although there are also studies showing that acclimation to hypoxic conditions, for instance, does not increase the Mb level in the heart, even though it does in other tissues (e.g.…”

Juvenile-specific high heat production contributes to the initial step of endothermic development in Pacific bluefin tuna

“…( Table 2 ). The relative ventricular mass of tunas ( range: 280 g–37 kg) ranges from 0.2% to 0.4% ( Poupa et al, 1981 ; Brill and Bushnell, 1991 ; Graham and Dickson, 2001 ; Blank et al, 2004 ), in agreement with our results and notably higher than that of ectothermic fish species (2–2000 g), which ranges from 0.07% to 0.17% ( Driedzic and Stewart, 1982 ; Santer et al, 1983 ; Sidell and Driedzic, 1985 ; Farrell et al, 1988 ). Additionally, the proportion of red muscle mass was 6.07% ± 1.79% (mean ± s.d.)…”

Mitochondrial metabolism of cardiac and skeletal muscles from a fast (Katsuwonus pelamis) and a slow (Cyprinus carpio) fish

“…Mass alone affords tuna a 5-fold advantage in oxidative capacity per kilogram of body mass relative to carp (4.0 vs. 0.76 g ventriclelkg). Skipjack tuna ventricular mass is higher than in most fish species (Poupa et al 1981;Side11 et al 1987), close to the range found in mammals (Poupa and Ostadal 1969;Driedzic et al 1987). Higher mitochondrial capacity per gram of ventricle is also obvious in tuna, but this is of lesser quantitative importance than the increased ventricle mass.…”

Variation in temperature tolerance among families of Atlantic salmon ( Salmo salar ) is associated with hypoxia tolerance, ventricle size and myoglobin level

“…Both functions could be extremely beneficial if oxygen supply to the heart does indeed become problematic at high temperature, which could then extend the heart's capacity to support aerobic activity at elevated temperatures as well as temperature tolerance. Poupa et al (Poupa et al, 1981) observed that the Mb level increased with size in tuna, Thunnus thynnus, and that this rate of Mb increase was elevated as the fish grew bigger, also supporting the function of Mb in facilitating the diffusion of the oxygen to tissues as the diffusion distance increases with the increased size of fish. High Mb levels have also been shown to be connected to elevated myocardial performance in hypoxic conditions (Driedzic et al, 1982), although there are also studies showing that acclimation to hypoxic conditions, for instance, does not increase the Mb level in the heart, even though it does in other tissues (e.g.…”