Responses of breeding Cory's shearwater Calonectris diomedea to experimental manipulation of chick condition

Granadeiro, José Pedro; Bolton, Mark; Silva, Mónica C.; Nunes, Manuela; Furness, Robert W.

doi:10.1093/beheco/11.3.274

Cited by 51 publications

(48 citation statements)

References 47 publications

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“…the PeakFTot in our study), with nestlings in poor condition vocalizing at relatively high frequencies. Of particular (Granadeiro et al 2000;Quillfeldt 2002;) and may be related to the temporal and spatial unpredictability of food resources in a marine environment. Adult Wilson's storm-petrels have to deal with the same problem concerning their feeding decisions as other seabirds.…”

Section: Discussionmentioning

confidence: 99%

“…Empirical studies yield equivocal results. Several studies have found that an increase in begging due to increased hunger level does affect the parental allocation of food (Cotton et al 1996;Granadeiro et al 2000;Leonard and Horn 2001;Ottosson et al 1997;Redondo and Castro 1992), while others report that solicitation behaviour either does not convey information or that parents do not or cannot act upon that information (Clark and Lee 1998;Ricklefs 1992).…”

Section: Introductionmentioning

confidence: 99%

“…Being a member of the order Procellariiformes, Wilson's storm-petrels have an obligate clutch size of one; consequently, parent-offspring interactions can be studied in the absence of sibling competition (Quillfeldt 2002). They nest, like most other seabirds, on remote islands and are nocturnal; hence, solicitation behaviour is not obscured by the complexities arising from predation pressure caused by small mammals (Granadeiro et al 2000) and diurnal predators, such as skuas and gulls. The side of the parents provides a rather simple situation as well.…”

Section: Introductionmentioning

confidence: 99%

“…The importance of begging behaviour as a means of providing information about the current nutritional status of chicks has also been recognized in other seabird species (Granadeiro et al 2000;Harris 1983;Henderson 1975;Iacovides and Evans 1998;Quillfeldt 2002;, but the mechanisms are still poorly understood. In Cory's shearwater Calonectris diomedea, for example, chicks were observed to decrease their begging rate after receiving supplementary food, whereas food-deprived chicks maintained high levels of begging (Granadeiro et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…In Cory's shearwater Calonectris diomedea, for example, chicks were observed to decrease their begging rate after receiving supplementary food, whereas food-deprived chicks maintained high levels of begging (Granadeiro et al 2000). Based on their study of the Manx shearwater Puffinus puffinus, Hamer et al (1999) suggested that information conveyed by the chick's begging intensity serves to reduce the provisioning rate to well-fed chicks but that parents cannot or do not increase food provisioning to poorly fed chicks.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Acoustic parameters of begging calls indicate chick body condition in Wilson’s storm-petrels Oceanites oceanicus

Gladbach

Büßer

Mundry

et al. 2008

J Ethol

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Begging behaviour as a key element in the parent-offspring conflict has been studied in many avian species. These types of studies have nearly exclusively been based on call counts, and it is still not entirely clear whether begging calls themselves contain any information. We studied begging behaviour in Wilson's storm-petrel Oceanites oceanicus, a small procellariiform seabird. This species provides the opportunity to study the signalling value of begging calls in the absence of potentially confounding factors such as nestling competition, previous feeding experiences and predation pressure. We applied a new method using a semi-automatic spectrogram analysis software that measures the acoustic parameters of begging calls. Our analysis revealed that the frequency parameters of begging calls reflect chicks' current body condition, with chicks in poorer condition uttering calls at higher frequencies. Chicks uttering higher pitched calls also received larger meals. Our study shows that certain acoustic parameters of begging calls can indicate the state of a chick in Wilson's storm-petrels.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Acoustic parameters of begging calls indicate chick body condition in Wilson’s storm-petrels Oceanites oceanicus

Gladbach

Büßer

Mundry

et al. 2008

J Ethol

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Begging in the absence of sibling competition in Wilson’s storm-petrels, Oceanites oceanicus

Quillfeldt

2002

Animal Behaviour

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Sexual segregation in the foraging distribution, behaviour, and trophic niche of the endemic Boyd’s shearwater (Puffinus lherminieri boydi)

et al. 2022

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Studies on sex-speci c segregation in foraging and trophic niche have been focused on large and dimorphic seabirds, with less information on small monomorphic species. Here, we used mini-GPS loggers, habitat suitability models, and stable isotopes to assess the foraging movements, at-sea spatial distribution, and trophic ecology of male and female Boyd's shearwaters Pu nus lherminieri boydi in Raso Islet (16°36' N, 24°35' W), Cabo Verde, during the breeding seasons of 2018-2019. The existence of sexual foraging segregation was tested in short and long foraging trips. Females engaged on longer foraging trips, travelling towards more distant and northward regions from the colony when compared to males, especially during long foraging excursions. Spatial overlap within and between sexes was generally low, indicating a sex-speci c pattern in the foraging behaviour and spatial distribution of adult breeders. Habitat suitability models revealed a higher importance for chlorophyll a concentration in explaining females' at-sea distribution during long foraging trips when compared to males, although the most important predictors in explaining adults' distribution were sea surface temperature and height for short and long excursions, respectively. Stable isotope analysis revealed that both sexes occupied similar isotopic niches and stable isotope mixing models revealed no diet differences. This indicates that Boyd's shearwaters segregate at the spatial level while foraging but rely on similar food resources. Our results suggest that female-biased nutritional requirements at the onset of chick-rearing may be driving sexual foraging segregation in this population, which depends upon resources from a rather oligotrophic environment.

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Responses of breeding Cory's shearwater Calonectris diomedea to experimental manipulation of chick condition

Cited by 51 publications

References 47 publications

Acoustic parameters of begging calls indicate chick body condition in Wilson’s storm-petrels Oceanites oceanicus

Acoustic parameters of begging calls indicate chick body condition in Wilson’s storm-petrels Oceanites oceanicus

Begging in the absence of sibling competition in Wilson’s storm-petrels, Oceanites oceanicus

Sexual segregation in the foraging distribution, behaviour, and trophic niche of the endemic Boyd’s shearwater (Puffinus lherminieri boydi)

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