Effects of Dietary Quality on Basal Metabolic Rate and Internal Morphology of European Starlings (<i>Sturnus vulgaris</i>)

Geluso, Keith; Hayes, Jack P.

doi:10.1086/316654

Cited by 65 publications

(42 citation statements)

References 37 publications

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“…Konarzewski and Diamond, 1995;Geluso and Hayes, 1999;Nespolo et al, 2002;Schimpf et al, 2012). As metabolic rate measured at one point in time may not represent the metabolic rate of the same individual at another point in time, such studies should endeavour to minimize the interval between measurements of the traits of interest.…”

Section: Resultsmentioning

confidence: 99%

The repeatability of metabolic rate declines with time

White

Schimpf

Cassey

2012

Journal of Experimental Biology

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SUMMARYThe evolutionary causes of variation in metabolic rate within and among species are a topic of enduring interest. Variation between individuals is the raw material on which natural selection acts, and so recent years have seen an increase in the number of studies that examine the consequences of inter-individual differences in metabolic rate for organismal performance. A minimum requirement for a trait to evolve is that it must differ consistently between individuals, and these differences must be heritable. The time constancy of a trait is assessed by estimating its repeatability, which represents the ratio of the betweenindividual component of phenotypic variance to total phenotypic variance. A previous meta-analysis of repeatability concluded that metabolic rate is, on average, repeatable. Here, we expand on this earlier analysis by including extra data published in the intervening years and demonstrate that the repeatability of metabolic rate decreases as the interval between measurements increases. Supplementary material available online at

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Section: Resultsmentioning

confidence: 99%

The repeatability of metabolic rate declines with time

White

Schimpf

Cassey

2012

Journal of Experimental Biology

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“…This 'quality versus quantity' link between diet and faecal amounts was demonstrated in starlings that were fed low quality (high fibre, low fat, low kilojoule) or high quality (low fibre, high fat, high kilojoule) diets. Birds that ate low-quality diets excreted more faecal matter than those fed high quality diets (Geluso & Hayes 1999).…”

Section: How Often and When Do Pigeons Defecate?mentioning

confidence: 97%

“…Avian excreta size and chemical composition are highly influenced by their diet (Geluso & Hayes 1999). Therefore, the food habits of the feral urban pigeon are likely to warrant investigation to determine changes in faecal chemistry that may lead to impacts on the urban built environment.…”

Section: The Influence Of Pigeon Diet On the Ph Of Excretamentioning

confidence: 99%

Dietary habits of urban pigeons (Columba livia) and implications of excreta pH – a review

Spennemann¹,

Watson²

2017

European Journal of Ecology

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Pigeons are considered to be urban pests, causing untold damage to buildings and potentially impacting the health of humans who come into contact with them or their faeces. Pigeon faecal matter has been implicated in both health impacts and building damage, with the acidity of the excreta playing an important role. Purpose of the Review. This paper is a wide-ranging review of the chemical processes of excreta in the pigeon to aid our understanding of the potential problems of pigeons to buildings and human amenity in the urban space. The natural pH of pigeons is shown to vary based on the bird's and age as well as reproductive stage. Key findings of the review. The influences of the altered diet between the rock dove (the wild progenitor of the feral pigeon) and the feral pigeon are detailed, indicating that the human-based diet of urban pigeons most likely causes the feral pigeon excreta to be more acidic than the rock dove excreta. This higher acidity is due in part to diet, but also to potential increases in faecal and/or uric acid volumes due to the low quality of humanbased diets. Again, this area of interest is highly data deficient due to the few number of studies and unspecified dietary intake before pH measurement. Implications of the review. Humans are increasingly concerned about pigeon populations (and presumably their accumulated faeces) in the urban space, and control comprises a large part of the interaction between humans and feral pigeons. This review provides a greater understanding of feral pigeons and the true effects of their excreta. INTRODUCTION ABSTRACTColumba livia; pH; Foraging; Diet; Excreta KEYWORDS

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“…In lactating mice, individual variations in BMR do not correlate with individual variation in organ morphology (Krol et al, 2003;Speakman and Johnson, 2000). Other studies have also failed to find associations between individual variation in morphology and BMR in birds and non-lactating mammals (Burness et al, 1998;Corp et al, 1997;Geluso and Hayes, 1999;Koteja, 1996).…”

Section: Introductionmentioning

confidence: 96%

Associations between basal metabolic rate and reproductive performance in C57BL/6J mice

Johnston¹,

Souter²,

Erwin³

et al. 2007

Journal of Experimental Biology

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SUMMARY Basal metabolic rate (BMR) is highly variable, both between and within species. One hypothesis is that this variation may be linked to the capacity for sustained rate of energy expenditure, leading to associations between high BMR and performance during energy-demanding periods of life history, such as reproduction. However, despite the attractive nature of this hypothesis,previous studies have failed to show an association between BMR and fecundity. Our approach was to mate 304 C57BL/6J mice and allow them to wean pups before measuring BMR by indirect calorimetry. We did not find an association between BMR and litter mass, size or pup mass at birth or weaning that could not be accounted for by the body mass of the dam. There was also no relationship between BMR (or BMR corrected for body mass) and birth or weaning success,losses during weaning, or sex ratio. However, a significant relationship was found between BMR and gestational weight loss indicative of foetal resorption. This suggests that during pregnancy the available energy may be limited and partitioned away from the growing foetus and towards maintenance of the mother. In this context, a high BMR may actually be disadvantageous,conflicting with the idea that high BMR may bring reproductive benefits.

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Effects of Dietary Quality on Basal Metabolic Rate and Internal Morphology of European Starlings (Sturnus vulgaris)

Cited by 65 publications

References 37 publications

The repeatability of metabolic rate declines with time

The repeatability of metabolic rate declines with time

Dietary habits of urban pigeons (Columba livia) and implications of excreta pH – a review

Associations between basal metabolic rate and reproductive performance in C57BL/6J mice

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