Intermittent breeding in the short‐tailed shearwater<i>Puffinus tenuirostris</i>

Bradley, J. S.; Wooller, R. D.; Skira, I. J.

doi:10.1046/j.1365-2656.2000.00422.x

Cited by 55 publications

(41 citation statements)

References 27 publications

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“…Increased frequency of skipping in the oldest age classes has also been reported in great skuas Catharacta skua (Catry et al, 1998), European shags (Harris et al, 1998) and short-tailed shearwaters Puffinus tenuirostris (Bradley et al, 2000). These patterns collectively point toward reproductive senescence effects in long-lived seabirds and clearly warrant further investigation.…”

Section: Discussionmentioning

confidence: 62%

Skipped breeding in common guillemots in a changing climate: restraint or constraint?

2015

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Climate change may have demographic consequences for marine top predators if it leads to altered rates of skipped breeding. Here we examine variation in skipping propensity at both the population and individual levels in common guillemots Uria aalge in relation to climate and oceanographic variables and explore the extent to which skipping may be adaptive or an unavoidable consequence of ecological or social constraints. We assumed a detection probability for birds present in the colony of 1.00 and skipping events were defined to include both resightings of non-breeders and failures to resight individuals known to be alive (not present at the colony but resighted in future years). Skipping frequency was higher in years where sea surface temperatures (SST) were higher in winter (both in the current and previous year), when guillemots from our study colony disperse widely across the southern North Sea. Individuals differed consistently in their average skipping propensity and their responses to SST. Males and females were equally likely to skip on average and the frequency of skipping increased in the oldest age classes. Birds that skipped in year t had lower breeding success in year t + 1 if they laid an egg, compared to birds that did not skip in year t. Lifetime reproductive output was negatively related to individual skipping frequency. These results imply that skipping is driven by individual-specific constraints, although we cannot rule out the possibility that birds benefit from skipping when environmental (or internal) signals indicate that breeding in poor years could be detrimental to their residual reproductive value. While future climate change might lead to guillemots skipping more often due to carry-over effects from wintering to breeding periods, the net demographic impacts may be subtle as the absolute frequency of skipping may remain low and individuals will not be equally affected.

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Section: Discussionmentioning

confidence: 62%

Skipped breeding in common guillemots in a changing climate: restraint or constraint?

2015

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“…Previous studies found that intermittent breeding was unrelated to environmental factors but seemed to be rather a consequence of heterogeneity in individual quality (e.g. [5]). On the contrary, our results revealed that intermittent breeding in redfooted boobies was highly influenced by environmental conditions.…”

Section: Discussionmentioning

confidence: 96%

“…Such studies have quantified intermittent breeding but did not identify correlated environmental mechanisms (e.g. [5]). Individual heterogeneity [6] and density dependence on breeding grounds [7] have been shown to influence recruitment.…”

Section: Introductionmentioning

confidence: 99%

To breed or not to breed: a seabird's response to extreme climatic events

et al. 2010

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Intermittent breeding is an important lifehistory strategy that has rarely been quantified in the wild and for which drivers remain unclear. It may be the result of a trade-off between survival and reproduction, with individuals skipping breeding when breeding conditions are below a certain threshold. Heterogeneity in individual quality can also lead to heterogeneity in intermittent breeding. We modelled survival, recruitment and breeding probability of the red-footed booby (Sula sula), using a 19 year mark -recapture dataset involving more than 11 000 birds. We showed that skipping breeding was more likely in El-Niñ o years, correlated with an increase in the local sea surface temperature, supporting the hypothesis that it may be partly an adaptive strategy of birds to face the trade-off between survival and reproduction owing to environmental constraints. We also showed that the age-specific probability of first breeding attempt was synchronized among different age-classes and higher in El-Niñ o years. This result suggested that pre-breeders may benefit from lowered competition with experienced breeders in years of high skipping probabilities.

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“…Coulson and Thomas 1985;Croxall et al 1992;Sydeman and Eddy 1995;Wendeln and Becker 1999). Likewise, some studies reported higher survival rates for birds with better breeding performance (Ollason and Dunnet 1988;Bradley et al 1989;Mills 1989;Cam and Monnat 2000a). Thus, associations between breeding performance and survival or recruitment age may result in variation in age-specific patterns observed at the population level, regardless of age-related changes within individuals (e.g.…”

Section: Introductionmentioning

confidence: 99%

Individual changes underlie age-specific pattern of laying date and egg-size in female common terns Sterna hirundo

et al. 2004

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It has been suggested that breeding performance differs between young and old birds due to the appearance and disappearance of phenotypes through differential survival (selection hypothesis) or differential recruitment (delayed breeding hypothesis) of highquality individuals, but each bird may show constant breeding performance over its life. We tested constant egg-volume and laying date by modelling their variability on the basis of the 109 known-age females of common tern Sterna hirundo with data available from 1 to 9 years. Longitudinal analyses showed a significant advancement of laying date, as well as a steady increase in egg-volume, in young age classes from 2 to 5-7 years old, indicating individual intrinsic changes in performance with age. In our model, female effect accounted for 74% and 8% of variance in egg-volume and laying date, respectively, suggesting that if correlation between breeding performance and survival or recruitment exists, population patterns of age-specific performance may emerge. However, we found no evidence that birds that did not return to breed during young age classes laid later or smaller eggs than returned breeders. Likewise, we found no evidence that recruiting birds laid earlier or larger eggs than same aged birds recruited in preceding years. Thus, this study shows that age-specific patterns in timing of breeding and egg-size in common terns result from individuals' intrinsic changes, and we reject the selection and the delayed breeding hypotheses as a major factor shaping age-specific patterns at population level.

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Intermittent breeding in the short‐tailed shearwaterPuffinus tenuirostris

Cited by 55 publications

References 27 publications

Skipped breeding in common guillemots in a changing climate: restraint or constraint?

Skipped breeding in common guillemots in a changing climate: restraint or constraint?

To breed or not to breed: a seabird's response to extreme climatic events

Individual changes underlie age-specific pattern of laying date and egg-size in female common terns Sterna hirundo

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