Basal metabolic rate, food intake, and body mass in cold- and warm-acclimated Garden Warblers

Klaassen, Marcel; Oltrogge, Martina; Trost, Lisa

doi:10.1016/j.cbpb.2003.12.004

Cited by 61 publications

(54 citation statements)

References 52 publications

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“…Cold acclimation may also increase M b for some species (Vézina et al, 2006(Vézina et al, , 2011Swanson et al, 2014b). However, other previous exercise-training and cold-acclimation studies showed stable (Klaassen et al, 2004;Bauchinger et al, 2010) or reduced (Deerenberg et al, 1998;Swaddle and Biewener, 2000;Nudds and Bryant, 2001) M b compared with control groups for other bird species. Our sparrows were provided more diet options, such as a protein supplement and meal worms, compared with studies documenting stable M b under cold or exercise protocols, so differences in diets among studies might contribute to the different results.…”

Section: Among Birds Tufted Ducksmentioning

confidence: 96%

“…Cold-acclimated birds generally show 5-42% increases in BMR compared with their warm-acclimated counterparts (Klaassen et al, 2004;Vézina et al, 2006;McKechnie, 2008;Peña-Villalobos et al, 2014). The increase in BMR produced by our acute cold training in the present study (15%) is at the lower end of this range, perhaps due to differences in daily energy expenditure (DEE) related to prolonged versus acute cold exposure.…”

Section: Among Birds Tufted Ducksmentioning

confidence: 99%

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Cross-training in birds: cold and exercise training produce similar changes in maximal metabolic output, muscle masses and myostatin expression in house sparrows,Passer domesticus

Zhang

Eyster

Liu

et al. 2015

Journal of Experimental Biology

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Maximal metabolic outputs for exercise and thermogenesis in birds presumably influence fitness through effects on flight and shivering performance. Because both summit (M sum , maximum thermoregulatory metabolic rate) and maximum (MMR, maximum exercise metabolic rate) metabolic rates are functions of skeletal muscle activity, correlations between these measurements and their mechanistic underpinnings might occur. To examine whether such correlations occur, we measured the effects of experimental cold and exercise training protocols for 3 weeks on body (M b ) and muscle (M pec ) masses, basal metabolic rate (BMR), M sum , MMR, pectoralis mRNA and protein expression for myostatin, and mRNA expression of TLL-1 and TLL-2 (metalloproteinase activators of myostatin) in house sparrows (Passer domesticus). Both training protocols increased M sum , MMR, M b and M pec , but BMR increased with cold training and decreased with exercise training. No significant differences occurred for pectoralis myostatin mRNA expression, but cold and exercise increased the expression of TLL-1 and TLL-2. Pectoralis myostatin protein levels were generally reduced for both training groups. These data clearly demonstrate cross-training effects of cold and exercise in birds, and are consistent with a role for myostatin in increasing pectoralis muscle mass and driving organismal increases in metabolic capacities.

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Section: Among Birds Tufted Ducksmentioning

confidence: 96%

Section: Among Birds Tufted Ducksmentioning

confidence: 99%

Cross-training in birds: cold and exercise training produce similar changes in maximal metabolic output, muscle masses and myostatin expression in house sparrows,Passer domesticus

Zhang

Eyster

Liu

et al. 2015

Journal of Experimental Biology

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“…The energy intake of the birds caught in summer and winter was measured over 3 days according to previously established methods (Klaassen et al 2004;Wu et al 2014). During each test, subjects were housed individually in cages, where food was provided in excess of the animals' needs and water was provided ad libitum.…”

Section: Energy Budgetmentioning

confidence: 99%

Seasonal phenotypic flexibility in body mass, basal thermogenesis, and tissue oxidative capacity in the male Silky Starling (Sturnus sericeus)

Sun

Mao

et al. 2017

Avian Res

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Background: Acclimatization to winter conditions is an essential prerequisite for the survival of small birds in the northern temperate zone. Changes in photoperiod, ambient temperature and food availability trigger seasonal physiological and behavioral acclimatization in many passerines. Seasonal trends in metabolic parameters are well known in avian populations from temperate environments; however, the physiological and biochemical mechanisms underlying these trends are incompletely understood. In this study, we used an integrative approach to measure variation in the thermogenic properties of the male Silky Starling (Sturnus sericeus) at different levels or organization, from the whole organism to the biochemical. We measured body mass (M b ), basal metabolic rate (BMR), energy budget, the mass of selected internal organs, state 4 respiration and cytochrome c oxidase (COX) activity in the heart, liver and muscle.Methods: Oxygen consumption was measured using an open-circuit respirometry system. The energy intake of the birds were then determined using an oxygen bomb calorimeter. Mitochondrial state 4 respiration and COX activity in heart, liver and pectoral muscle were measured with a Clark electrode. Results:The results suggest that acclimatization to winter conditions caused significant change in each of the measured variables, specifically, increases in M b , organ mass, BMR, energy intake and cellular enzyme activity. Furthermore, BMR was positively correlated with body mass, energy intake, the mass of selected internal organs, state 4 respiration in the heart, liver and muscle, and COX activity in the heart and muscle. Conclusions:These results suggest that the male Silky Starling's enhanced basal thermogenesis under winter conditions is achieved by making a suite of adjustments from the whole organism to the biochemical level, and provide further evidence to support the notion that small birds have high phenotypic plasticity with respect to seasonal changes.

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“…The energy intake of the birds caught in each season was measured over three days according to previously established methods (Klaassen et al, 2004;Ni et al, 2011). Non-absorped food and feces were collected after the 3-day period, separated manually and oven-dried at 70°C for at least 72 h. The caloric contents of the dried food and feces were then determined using a C 200 oxygen bomb calorimeter (IKA Instrument, Germany).…”

Section: Energy Budgetmentioning

confidence: 99%

Seasonal variation in body mass and energy budget in Chinese bulbuls (pycnonotus sinensis)

Xiao

Yang

et al. 2014

Avian Res

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Background: Seasonal adjustments in body mass and energy budget are important for the survival of small birds in temperate zones. Seasonal changes in body mass, body temperature, gross energy intake (GEI), digestible energy intake (DEI), body fat content, as well as length and mass of the digestive tract, were measured in Chinese Bulbuls (Pycnonotus sinensis) caught in the wild at Wenzhou, China. Methods: Body mass was determined with a Sartorius balance. The caloric contents of the dried food and feces were then determined using a oxygen bomb calorimeter. Total fat was extracted from the dried carcasses by ether extraction in a Soxhlet apparatus. The digestive tract of each bird was measured and weighed, and was then dried to a constant mass. Results: Body mass showed a significant seasonal variation and was higher in spring and winter than in summer and autumn. Body fat was higher in winter than in other seasons. GEI and DEI were significantly higher in winter. The length and mass of the digestive tract were greatest in winter and the magnitude of both these parameters was positively correlated with body mass, GEI and DEI. Small passerines typically have higher daily energy expenditure in winter, necessitating increased food consumption. Conclusions: This general observation is consistent with the observed winter increase in gut volume and body mass in Chinese Bulbuls. These results suggest that Chinese Bulbuls adjust to winter conditions by increasing their body mass, body fat, GEI, DEI and digestive tract size.

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Basal metabolic rate, food intake, and body mass in cold- and warm-acclimated Garden Warblers

Cited by 61 publications

References 52 publications

Cross-training in birds: cold and exercise training produce similar changes in maximal metabolic output, muscle masses and myostatin expression in house sparrows,Passer domesticus

Cross-training in birds: cold and exercise training produce similar changes in maximal metabolic output, muscle masses and myostatin expression in house sparrows,Passer domesticus

Seasonal phenotypic flexibility in body mass, basal thermogenesis, and tissue oxidative capacity in the male Silky Starling (Sturnus sericeus)

Seasonal variation in body mass and energy budget in Chinese bulbuls (pycnonotus sinensis)

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