Acclimation to different thermal conditions in a northerly wintering shorebird is driven by body mass-related changes in organ size

Vézina, François; Jalvingh, Kirsten M.; Dekinga, Anne; Piersma, Theunis

doi:10.1242/jeb.02338

Cited by 117 publications

(126 citation statements)

References 93 publications

(136 reference statements)

Supporting

Mentioning

109

Contrasting

Order By: Relevance

“…The thermogenic aerobic scope of tropical birds, fAS C , was not related to M b , which may be an effect of the small range in M b of 9.6-71, and averaged 4.5 ϫ BMR or 15-34% lower than fAS E (Table 1). fAS C was 22% lower in tropical birds than in temperate birds (20): a significant difference despite extensive overlap with values reported for temperate bird species that fall within the range of 3-9 ϫ BMR (6,23,45).…”

Section: Discussionmentioning

confidence: 57%

Cold- and exercise-induced peak metabolic rates in tropical birds

Wiersma

Chappell

Williams

2007

Proc. Natl. Acad. Sci. U.S.A.

122

View full text Add to dashboard Cite

Compared with temperate birds, tropical birds have low reproductive rates, slow development as nestlings, and long lifespans. These ''slow'' life history traits are thought to be associated with reduced energy expenditure, or a slow ''pace of life.'' To test predictions from this hypothesis, we measured exercise-induced peak metabolic rates (PMRE) in 45 species of tropical lowland forest birds and compared these data with PMRE for three temperate species. We also compared cold-induced PMR (PMRC) with PMRE in the same individuals of 19 tropical species. Tropical birds had a 39% lower PMRE than did the temperate species. In tropical birds, PMRC and PMRE scaled similarly with body mass (Mb), but PMRE was 47% higher than PMRC. PMRE averaged 6.44 ؋ basal metabolic rate (BMR) and PMRC averaged 4.52 ؋ BMR. The slope of the equation relating PMRE to Mb exceeded the slope for the equation for BMR vs. Mb, whereas slopes for the equations of PMRC and BMR vs. Mb did not differ. Mb-adjusted residuals of PMRE were positively correlated with residual BMR, whereas residual PMRC and residual BMR were not correlated. PMRE and PMRC were not correlated after we corrected for Mb. Temperate birds maintained their body temperature at an 8.6°C lower average air temperature than did tropical species. The lower PMRE values in tropical species suggest that their suite of life history traits on the slow end of the life history continuum are associated with reduced metabolic rates. maximum metabolic rate ͉ summit metabolism ͉ metabolic scope ͉ pace of life ͉ cold tolerance E cological physiologists have devoted considerable effort to examining the upper limits of physiological performance, especially locomotor performance and metabolic power production during cold exposure. An implicit or explicit hypothesis in this work is that individual variation in performance is correlated with fitness: higher performance such as faster running or greater metabolic power output leads to increased survival and/or reproductive success. In the past few decades, a variety of performance indices have been measured in numerous species, and analyses have examined performance in mechanistic, phylogenetic, ecological, and evolutionary contexts.

show abstract

Section: Discussionmentioning

confidence: 57%

Cold- and exercise-induced peak metabolic rates in tropical birds

Wiersma

Chappell

Williams

2007

Proc. Natl. Acad. Sci. U.S.A.

122

View full text Add to dashboard Cite

show abstract

“…Wiersma and colleagues found that Panamanian birds have lower maximal metabolic rates than temperate birds during forced exercise and shivering thermogenesis, as well as lower BMR (Wiersma et al 2007a). They suggested that the reduced aerobic capacity might derive from lower demands for flight performance in tropical forests, where most birds are nonmigratory and many are relatively sedentary; this, as well as low BMR (Vezina et al 2006;Daan et al 1990;Chappell et al 1999) is consistent with data in tropical species showing relatively small organ masses (pectoral muscle, heart, lung, liver, kidney, liver, pancreas; Wiersma et al…”

Section: Discussionmentioning

confidence: 99%

A ‘slow pace of life’ in Australian old-endemic passerine birds is not accompanied by low basal metabolic rates

et al. 2016

View full text Add to dashboard Cite

. (2016). A 'slow pace of life' in Australian old-endemic passerine birds is not accompanied by low basal metabolic rates. Journal of Comparative Physiology B: biochemical, systemic, and environmental physiology, 186 (4), 503-512. A ' slow pace of life' in Australian old-endemic passerine birds is not accompanied by low basal metabolic rates AbstractLife history theory suggests that species experiencing high extrinsic mortality rates allocate more resources toward reproduction relative to self-maintenance and reach maturity earlier ('fast pace of life') than those having greater life expectancy and reproducing at a lower rate ('slow pace of life'). Among birds, many studies have shown that tropical species have a slower pace of life than temperate-breeding species. The pace of life has been hypothesized to affect metabolism and, as predicted, tropical birds have lower basal metabolic rates (BMR) than temperate-breeding birds. However, many temperate-breeding Australian passerines belong to lineages that evolved in Australia and share 'slow' life-history traits that are typical of tropical birds. We obtained BMR from 30 of these 'old-endemics' and ten sympatric species of more recently arrived passerine lineages (derived from Afro-Asian origins or introduced by Europeans) with 'faster' life histories. The BMR of 'slow' temperate-breeding old-endemics was indistinguishable from that of new-arrivals and was not lower than the BMR of 'fast' temperate-breeding non-Australian passerines. Old-endemics had substantially smaller clutches and longer maximal life spans in the wild than new arrivals, but neither clutch size nor maximum life span was correlated with BMR. Our results suggest that low BMR in tropical birds is not functionally linked to their 'slow pace of life' and instead may be a consequence of differences in annual thermal conditions experienced by tropical versus temperate species.

show abstract

“…Following a 1-month health quarantine period, the birds were randomly assigned to one of three identical outdoor aviaries on 27 October 2009. The birds were exposed to the local ambient temperature and photoperiod at 51°N, but sheltered from wind and precipitation (for aviary details, see Vézina et al 2006). The mean (± SE) monthly temperatures during the trial period were 9.6 ± 0.…”

Section: Methodsmentioning

confidence: 99%

“…The first respirometry trial was conducted on 23 November 2009, 27 days after the birds were established in outside aviaries. We measured oxygen consumption (V O 2 ) and calculated metabolic rates using a flow-through respirometry system on ≤4 individuals per trial (for setup details, see Vézina et al 2006).…”

Section: Methodsmentioning

confidence: 99%