The effect of acclimation and acclimatization on the resting metabolic rate of the common redpoll

Phenotypic flexibility in the basal metabolic rate of laughing doves:responses to short-term thermal acclimation

“…Within individual doves, BMR adjustments involved two components: first, a decrease in BMR following the initial measurements, and second, up-or downregulation of BMR correlated with T acc . The negative relationships between BMR and T acc in laughing doves following both acclimation I and II are consistent with the findings of several workers that the metabolic machinery of birds is upregulated in response to elevated thermoregulatory demands (Klaassen et al, 2004;Tieleman et al, 2003b;West, 1972;Williams and Tieleman, 2000). The magnitude of BMR adjustments in laughing doves, when expressed relative to the T acc gradient, falls within the range observed in other species (Table·3).…”

Phenotypic flexibility in the basal metabolic rate of laughing doves:responses to short-term thermal acclimation

“…Within individual doves, BMR adjustments involved two components: first, a decrease in BMR following the initial measurements, and second, up-or downregulation of BMR correlated with T acc . The negative relationships between BMR and T acc in laughing doves following both acclimation I and II are consistent with the findings of several workers that the metabolic machinery of birds is upregulated in response to elevated thermoregulatory demands (Klaassen et al, 2004;Tieleman et al, 2003b;West, 1972;Williams and Tieleman, 2000). The magnitude of BMR adjustments in laughing doves, when expressed relative to the T acc gradient, falls within the range observed in other species (Table·3).…”

Energetics, Thermoregulation and Nocturnal Hypothermia in Australian Silvereyes

“…However, T, reduction was independent of T, (P = 0.56, day; P = 0.53, night). Our findings that T, during nocturnal hypothermia was independent of T, are similar to the results recorded for some avian species (Steen 1958, Lasiewski and Dawson 1964, Prinzinger et al 1981, Hohtola et al 1991, Brigham 1992, but are in direct contrast to others (West 1972, Reinertsen and Haftom 1983, 1984, 1986, Swanson 1991, McNab and Bonaccorso 1995. This conflict may be due to a number of factors, not excluding the different response of different species.…”

Metabolic and insulative changes in winter- and summer-acclimatized King Penguin chicks

“…On the other hand, the summer LCT is extremely far off the calculated value (-18 ~ from the equation of Calder and King (1974). These results are in agreement with previous observations that winter birds have a lower LCT than summer birds (Veghte 1964;West 1972;Saarela and Vakkuri 1982).…”

Phenotypic flexibility in the basal metabolic rate of laughing doves:responses to short-term thermal acclimation

“…Within individual doves, BMR adjustments involved two components: first, a decrease in BMR following the initial measurements, and second, up-or downregulation of BMR correlated with T acc . The negative relationships between BMR and T acc in laughing doves following both acclimation I and II are consistent with the findings of several workers that the metabolic machinery of birds is upregulated in response to elevated thermoregulatory demands (Klaassen et al, 2004;Tieleman et al, 2003b;West, 1972;Williams and Tieleman, 2000). The magnitude of BMR adjustments in laughing doves, when expressed relative to the T acc gradient, falls within the range observed in other species (Table·3).…”

Energetics, Thermoregulation and Nocturnal Hypothermia in Australian Silvereyes

“…However, T, reduction was independent of T, (P = 0.56, day; P = 0.53, night). Our findings that T, during nocturnal hypothermia was independent of T, are similar to the results recorded for some avian species (Steen 1958, Lasiewski and Dawson 1964, Prinzinger et al 1981, Hohtola et al 1991, Brigham 1992, but are in direct contrast to others (West 1972, Reinertsen and Haftom 1983, 1984, 1986, Swanson 1991, McNab and Bonaccorso 1995. This conflict may be due to a number of factors, not excluding the different response of different species.…”

Metabolic and insulative changes in winter- and summer-acclimatized King Penguin chicks

“…On the other hand, the summer LCT is extremely far off the calculated value (-18 ~ from the equation of Calder and King (1974). These results are in agreement with previous observations that winter birds have a lower LCT than summer birds (Veghte 1964;West 1972;Saarela and Vakkuri 1982).…”

Phenotypic flexibility in the basal metabolic rate of laughing doves:responses to short-term thermal acclimation

“…Within individual doves, BMR adjustments involved two components: first, a decrease in BMR following the initial measurements, and second, up-or downregulation of BMR correlated with T acc . The negative relationships between BMR and T acc in laughing doves following both acclimation I and II are consistent with the findings of several workers that the metabolic machinery of birds is upregulated in response to elevated thermoregulatory demands (Klaassen et al, 2004;Tieleman et al, 2003b;West, 1972;Williams and Tieleman, 2000). The magnitude of BMR adjustments in laughing doves, when expressed relative to the T acc gradient, falls within the range observed in other species (Table·3).…”

Energetics, Thermoregulation and Nocturnal Hypothermia in Australian Silvereyes

“…However, T, reduction was independent of T, (P = 0.56, day; P = 0.53, night). Our findings that T, during nocturnal hypothermia was independent of T, are similar to the results recorded for some avian species (Steen 1958, Lasiewski and Dawson 1964, Prinzinger et al 1981, Hohtola et al 1991, Brigham 1992, but are in direct contrast to others (West 1972, Reinertsen and Haftom 1983, 1984, 1986, Swanson 1991, McNab and Bonaccorso 1995. This conflict may be due to a number of factors, not excluding the different response of different species.…”

Metabolic and insulative changes in winter- and summer-acclimatized King Penguin chicks

“…On the other hand, the summer LCT is extremely far off the calculated value (-18 ~ from the equation of Calder and King (1974). These results are in agreement with previous observations that winter birds have a lower LCT than summer birds (Veghte 1964;West 1972;Saarela and Vakkuri 1982).…”