Hardly hard-hearted: heart rate responses of incubating Northern Giant Petrels (Macronectes halli) to human disturbance on sub-Antarctic Marion Island

Villiers, Marienne de; Bause, Mariëtte; Giese, Melissa; Fourie, A M

doi:10.1007/s00300-006-0137-2

Cited by 33 publications

(16 citation statements)

References 9 publications

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“…Foraging at moderate to high trophic levels and nesting in large, readily accessible colonies facilitates the use of penguins as model species and as a proxy for other taxa that are more difficult to sample including marine mammals or species that are more sensitive to human disturbance (e.g., petrels and albatross; deVilliers et al, 2006). The wide geographic distribution of penguins allows for the use of taxa from within a single family limiting the need to consider evolutionary or physiological variation in the ability to regulate or eliminate mercury.…”

Section: Discussionmentioning

confidence: 99%

A comprehensive assessment of mercury exposure in penguin populations throughout the Southern Hemisphere: Using trophic calculations to identify sources of population-level variation

Brasso

Chiaradia

Polito

et al. 2015

Marine Pollution Bulletin

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Section: Discussionmentioning

confidence: 99%

A comprehensive assessment of mercury exposure in penguin populations throughout the Southern Hemisphere: Using trophic calculations to identify sources of population-level variation

Brasso

Chiaradia

Polito

et al. 2015

Marine Pollution Bulletin

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“…This is probably the case because seabirds have been considered less susceptible to handling than other birds. However, disturbance is known to substantially increase the heart rate of seabirds, suggesting a high susceptibility to stress de Villiers et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Capture and blood sampling do not affect foraging behaviour, breeding success and return rate of a large seabird: the black-browed albatross

2010

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During the last decades, eco-physiological studies have usually relied on the collection of blood from wild organisms in order to obtain relevant physiological measures. However, accurate estimates of the impact of capture and blood collection on performances of Polar seabird species have rarely been conducted. We investigated for the first time the effects of a blood sampling process on subsequent foraging behaviour, reproductive performance and return rate of black-browed albatrosses (Thalassarche melanophris) at Kerguelen Islands. We did not find any evidence that the blood sampling process as conducted in our study had detrimental effects on the breeding or foraging strategies or performance of blackbrowed albatrosses. Because blood collection can be performed in several different ways, we recommend that eco-physiologists conduct pilot studies to test whether their blood sampling process affects the performances of their study species.

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“…These types of disturbances have been shown to affect the behavior and physiology of reptiles and birds (Gaunt and Gans, 1969;de Villiers et al, 2006;Wright et al, 1992). Similarly, results from early laboratory studies on physiological responses of forcibly submerged marine mammals and birds were not consistently reproduced in freely diving animals (Jobsis et al, 2001).…”

Section: Prior Studiesmentioning

confidence: 99%

Continuous arterial PO2 profiles in unrestrained, undisturbed aquatic turtles during routine behaviors

Williams

Hicks

2016

Journal of Experimental Biology

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Mammals and birds maintain high arterial partial pressure of oxygen (P O2 ) values in order to preserve near-complete hemoglobin (Hb) oxygen (O 2 ) saturation. In diving mammals and birds, arterial O 2 follows a primarily monotonic decline and then recovers quickly after dives. In laboratory studies of submerged freshwater turtles, arterial O 2 depletion typically follows a similar pattern. However, in these studies, turtles were disturbed, frequently tethered to external equipment and confined either to small tanks or breathing holes. Aquatic turtles can alter cardiac shunting patterns, which will affect arterial P O2 values. Consequently, little is known about arterial O 2 regulation and use in undisturbed turtles. We conducted the first study to continuously measure arterial P O2 using implanted microelectrodes and a backpack logger in undisturbed red-eared sliders during routine activities. Arterial P O2 profiles during submergences varied dramatically, with no consistent patterns. Arterial P O2 was also lower than previously reported during all activities, with values rarely above 50 mmHg (85% Hb saturation). There was no difference in mean P O2 between five different activities: submerged resting, swimming, basking, resting at the surface and when a person was present. These results suggest significant cardiac shunting occurs during routine activities as well as submergences. However, the lack of relationship between P O2 and any activity suggests that cardiac shunts are not regulated to maintain high arterial P O2 values. These data support the idea that cardiac shunting is the passive by-product of regulation of vascular resistances by the autonomic nervous system.

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Hardly hard-hearted: heart rate responses of incubating Northern Giant Petrels (Macronectes halli) to human disturbance on sub-Antarctic Marion Island

Cited by 33 publications

References 9 publications

A comprehensive assessment of mercury exposure in penguin populations throughout the Southern Hemisphere: Using trophic calculations to identify sources of population-level variation

A comprehensive assessment of mercury exposure in penguin populations throughout the Southern Hemisphere: Using trophic calculations to identify sources of population-level variation

Capture and blood sampling do not affect foraging behaviour, breeding success and return rate of a large seabird: the black-browed albatross

Continuous arterial PO2 profiles in unrestrained, undisturbed aquatic turtles during routine behaviors

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