Seasonal Metabolic Variation in Birds: Functional and Mechanistic Correlates

Swanson, David L.

doi:10.1007/978-1-4419-6421-2_3

Cited by 174 publications

(419 citation statements)

References 251 publications

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“…While temperate species likely have higher activities in response to breeding demands, there are also clear differences in abiotic factors across habitats, most notably the seasonal temperature range experienced by temperate birds. Recent reports (Jetz et al 2008;Swanson and Garland 2009;Swanson 2010) indicate that cold temperatures experienced during highlatitude winters are a more potent driver of metabolic capacity than migration. That observation also suggests that winter temperatures are more likely to drive the higher metabolic capacity of temperate birds than their more intense breeding behavior (see also Sgueo et al 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Swanson (2010) that migration is less of a stimulus for high metabolic capacity than winter survival. However, the degree of increase (*32 %) is similar for our Northern Waterthrush compared to the increases seen in temperate residents during winter (Swanson and Garland 2009), thus there may be species differences between migrants and residents that must be explored.…”

Section: Discussionmentioning

confidence: 99%

“…Phenotypic flexibility, defined as intra-individual and reversible phenotypic transformations (Piersma and Lindstrom 1997), permits migrants to adjust many physiological traits in response to the changing requirements of annual cycles (e.g., McWilliams and Karasov 2001). Similarly, metabolic capacity shows considerable flexibility in both temperate (Swanson 2010) and tropical residents . Migratory birds are thus excellent organisms to examine the role of phenotypic flexibility of metabolic rate in the context of life history variation.…”

Section: Introductionmentioning

confidence: 99%

“…As metabolism is often reported to exhibit phenotypic flexibility (Swanson 2010), we hypothesize that Northern Waterthrush acclimatize to local environments, matching relatively low metabolic rates of tropical residents while overwintering and higher metabolic rates of temperate residents during breeding. Further, we predict the highest metabolic rates during migration.…”

Section: Introductionmentioning

confidence: 99%

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Summit metabolic rate exhibits phenotypic flexibility with migration, but not latitude in a neotropical migrant, Parkesia noveboracensis

Corder

Schaeffer

2015

J Ornithol

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Physiology-life history interactions suggest that birds living with a fast 'pace-of-life' should have higher metabolic capacity to provision higher reproductive activity. Previous work supports this, but does not consider migration. We measured summit metabolism ( _ VO 2 summit ) in Northern Waterthrush (Parkesia noveboracensis) while wintering in the Republic of Panama, migrating northwards through eastern North America, and while breeding in northeastern North America. _ VO 2 summit is similar between breeding and overwintering (non-migratory) and is significantly elevated in migration. These data suggest that migration is a driver of phenotypic flexibility in these birds and that migration, like winter survival, may be an important determinant of connections between life history and physiology.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Summit metabolic rate exhibits phenotypic flexibility with migration, but not latitude in a neotropical migrant, Parkesia noveboracensis

Corder

Schaeffer

2015

J Ornithol

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“…These adjustments may include winter plumages of different colouration and thermal properties (Montgomerie et al 2001), behavioural responses such as food caching (Smith and Reichman 1984), and/or physiological changes. One major category of physiological response to seasonal climates among non-migratory species involves the adjustment of metabolic machinery (reviewed by Swanson 2010;McKechnie 2008).…”

Section: Introductionmentioning

confidence: 99%

Global patterns of seasonal acclimatization in avian resting metabolic rates

2015

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The adjustment of resting metabolic rates represents an important component of avian seasonal acclimatization, with recent studies revealing substantial differences between summer and winter in birds from a wide range of latitudes. We compared seasonal variation in basal metabolic rate (BMR) and summit metabolism (Msum) between temperate and tropical/subtropical latitudes, and examined correlations with latitude and temperature. The direction and magnitude of seasonal adjustments in BMR are broadly related to temperature and latitude, but are significantly more variable among tropical and subtropical species compared to those inhabiting temperate zones. Winter adjustments in BMR among subtropical species, when expressed relative to summer 1 values, range from decreases of approximately 35 % to increases of more than 60 %, whereas the majority of temperate-zone species show increases in BMR during winter. Relatively few seasonal Msum data exist for tropical/subtropical species, but those that are available involve responses ranging from winter decreases to increases of similar magnitude to those characteristic of many temperate-zone species. Recent studies also highlight the substantial variation in seasonal adjustments that may occur within species, and reiterate the need for further investigations of the relative roles of environmental variables such as temperature and food availability as determinants of seasonal metabolic variation.

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