Seasonal Resting Metabolic Rate and Food Intake of Captive Pacific White-Sided Dolphins (Lagenorhynchus obliquidens)

Rechsteiner, Erin U.; Rosen, David A. S.; Trites, Andrew W.

doi:10.1578/am.39.3.2013.241

Cited by 10 publications

(8 citation statements)

References 44 publications

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“…As the duration of measurement of RMR is important [ 21 , 27 , 60 ], it is possible that these extended measurement periods helped calm the animals and reduce the RMR. In fact, studies where the dolphins were resting for 10–20 min in the respirometer have reported values that are similar to those predicted by Kleiber [ 18 , 21 , 29 , 52 ]. Consequently, appropriately designed metabolic studies on marine mammals managed under human care provide RMR values that are similar to those in wild populations.…”

Section: Discussionsupporting

confidence: 68%

“…duration of measurements) and analysis of collected data [48][49][50]. Studies have shown that variation in RMR is affected by body condition, the thermal environment, desensitization through training and psychological state [18,19,29,30,51,52]. These past studies indicate that experimental design and conditions may significantly alter the results and could explain the large variability in RMR reported across published studies.…”

Section: Discussionmentioning

confidence: 99%

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Field energetics and lung function in wild bottlenose dolphins,Tursiops truncatus, in Sarasota Bay Florida

Fahlman

Brodsky²,

Wells

et al. 2018

R. Soc. open sci.

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We measured respiratory flow rates, and expired O2 in 32 (2–34 years, body mass [Mb] range: 73–291 kg) common bottlenose dolphins (Tursiops truncatus) during voluntary breaths on land or in water (between 2014 and 2017). The data were used to measure the resting O2 consumption rate (V˙O2, range: 0.76–9.45 ml O2 min−1 kg−1) and tidal volume (VT, range: 2.2–10.4 l) during rest. For adult dolphins, the resting VT, but not V˙O2, correlated with body mass (Mb, range: 141–291 kg) with an allometric mass-exponent of 0.41. These data suggest that the mass-specific VT of larger dolphins decreases considerably more than that of terrestrial mammals (mass-exponent: 1.03). The average resting sV˙O2 was similar to previously published metabolic measurements from the same species. Our data indicate that the resting metabolic rate for a 150 kg dolphin would be 3.9 ml O2 min−1 kg−1, and the metabolic rate for active animals, assuming a multiplier of 3–6, would range from 11.7 to 23.4 ml O2 min−1 kg−1.\absbreak Our measurements provide novel data for resting energy use and respiratory physiology in wild cetaceans, which may have significant value for conservation efforts and for understanding the bioenergetic requirements of this species.

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Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Field energetics and lung function in wild bottlenose dolphins,Tursiops truncatus, in Sarasota Bay Florida

Fahlman

Brodsky²,

Wells

et al. 2018

R. Soc. open sci.

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“…), Hawaiian spinner dolphins ( Stenella longirostris ) ( e.g., Hampton and Whittow ), and Pacific white‐sided dolphins ( Lagenorhynchus obliquidens ) ( e.g., Rechsteiner et al . ). Relatively few direct measurements of BMR have been undertaken on larger cetaceans, and are limited to beluga whales ( Delphinapterus leucas ) ( e.g., Kasting et al .…”

Section: Measured Oxygen Consumption Rates and Bmr For A 27‐yr‐old Mamentioning

confidence: 97%

Basal metabolism of an adult male killer whale (Orcinus orca)

Worthy

Yochem

et al. 2013

Marine Mammal Science

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Knowing how much energy an individual requires is fundamental to resolving a number of questions about the role an animal plays in its ecosystem. Various authors have used different approaches to assess energy needs of in situ (free-ranging) killer whales (Orcinus orca), including estimates based on observations of prey capture and consumption rates (e.g., Williams et al. 2004, Maniscalco et al. 2007 or extrapolations from bioenergetic models using data derived from ex situ (managed in zoological parks) individuals (e.g., Kastelein and Vaughan 1989, Kasting et al. 1989, Kriete 1995, Kastelein et al. 2003. The few measurements that have been made on ex situ killer whales include assessments of respiratory capabilities (e.g., Spencer et al. 1967, Kriete 1995, quantification of food/energy intake rates (e.g., Vaughan 1989, Kastelein et al. 2000a), or measures of metabolic rate (e.g., Kasting et al. 1989, Kriete 1995. These latter measurements have frequently not met the criteria of Kleiber (1975) due to whales being immature, pregnant, and/or active. The goals of the present study were to develop a functional methodology that could be employed to measure resting oxygen consumption rates of ex situ killer whales and obtain basal metabolic rate (BMR) measurements.The foundation of any bioenergetic model is an accurate assessment of BMR. They are not only used to estimate "resting" costs, but multiples of BMR are often used to estimate total field metabolic rates. Such models are important for estimating energy expenditures since it is difficult or impossible to acquire direct measures, especially for in situ whales, due to their large size and limited accessibility. Mass-balance simulation models have been used to estimate feeding requirements for some marine mammal species (e.g., Winship et al. 2002, Williams andNoren 2009), but because actual energetic measurements (including critical estimates of BMR) are impossible 1

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“…Kastelein et al 2002), energetic requirements (e.g. Rechsteiner et al 2013) and feeding behaviours (e.g. Levermann et al 2003).…”

Section: Using Sea Otters As An Example) For Instance Femalementioning

confidence: 99%

Competition between marine mammals and fisheries in contemporary harvested marine ecosystems

Saavedra

Kuparinen²

2019

Mar. Ecol. Prog. Ser.

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Competitive interactions between marine mammals and fisheries represents one of the most complex challenges in marine resource management worldwide. The development of commercial fisheries and recovering marine mammal populations have contributed to decreasing of fish availability. Whilst ecosystem-based fisheries management (EBFM) can counteract this decrease, achieving the EBFM objectives faces certain major obstacles including insufficient or unreliable data, inapplicable assessment models as well as inadequate management decisions that do not account for fisheriesinduced morphological alterations (FIMA) and marine mammal management. Despite a body of evidence addressing various aspects of marine mammal-fisheries competition, little is known about the effects of marine mammal-fisheries biological interactions affecting the fish viability and food web stability. Here, we review the research done on marine mammal-fisheries competitive biological interactions (hereafter as 'biological competition') by focussing on: (1) the prerequisites for marine mammal-fisheries biological competition and the relevant methodologies to explore them and (2) recent studies revealing the implications of FIMA and trophic interactions for the biological competition. We also discuss on the implications of FIMA, eco-evolutionary feedback and preypredator dynamics for EBFM implementation in contemporary harvested ecosystems. Our main findings reveal a lack of data about marine mammals' prey choice and selectivity, the need for better representation of marine mammals in modelling approaches and lastly, the necessity for additional research linking FIMA, trophic interactions and the EBFM objectives. To conclude, interdisciplinary approaches may serve to link all of the efforts needed to effectively and holistically support the implementation of EBFM.

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Seasonal Resting Metabolic Rate and Food Intake of Captive Pacific White-Sided Dolphins (Lagenorhynchus obliquidens)

Cited by 10 publications

References 44 publications

Field energetics and lung function in wild bottlenose dolphins,Tursiops truncatus, in Sarasota Bay Florida

Field energetics and lung function in wild bottlenose dolphins,Tursiops truncatus, in Sarasota Bay Florida

Basal metabolism of an adult male killer whale (Orcinus orca)

Competition between marine mammals and fisheries in contemporary harvested marine ecosystems

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