Body size and determinants of laying date variation in the Snow Petrel <i>Pagodroma nivea</i>

Barbraud, Christophe; Lormée, Hervé; LeNevé, Arnaud

doi:10.1034/j.1600-048x.2000.310304.x

Cited by 18 publications

(15 citation statements)

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“…The laying period ranges from late November to mid‐December. Within one breeding season, egg‐laying dates differ between individuals over a period of 2 weeks (Barbraud, Lormee & LeNeve 2000).…”

Section: Methodsmentioning

confidence: 99%

Age and the timing of breeding in a long‐lived bird: a role for stress hormones?

Goutte¹,

Antoine

Weimerskirch

et al. 2010

Functional Ecology

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Summary1. Young birds often reproduce later in the season than older ones, with poorer breeding success, but the proximate mechanisms involved in such a pattern remain poorly studied, especially in long-lived species. One possible mechanism is the endocrine stress response which is accompanied by the release of corticosterone. Elevated corticosterone levels can trigger physiological and behavioural responses that may delay or even suppress reproduction. 2. We tested the hypothesis that the delayed timing of breeding of young birds may be related to a greater susceptibility to stress compared with older ones during the pre-laying period of the breeding season. For this purpose, known-age (7-44 years old) pre-laying snow petrels, Pagodroma nivea, were monitored for baseline and acute stress-induced corticosterone levels. We examined whether baseline and stress-induced corticosterone levels were related to age, and whether they could influence the decision to breed and egg-laying date. 3. Young snow petrels were more likely to skip the breeding season and to breed later than middle-aged birds. In addition, the oldest birds bred later than middle-aged ones, suggesting a possible senescence on laying dates. Baseline corticosterone levels were independent of age but young and very old birds were more sensitive to stress than middle-aged ones. However, there was no effect of stress-induced corticosterone levels on breeding decision and egg-laying date. Elevated baseline corticosterone levels during the pre-laying period were associated with a higher probability of skipping breeding in females and a delayed timing of egg-laying in both sexes. 4. These results suggest that the greater susceptibility of young breeders to stress was not the functional mechanism explaining their delayed timing of breeding. Baseline corticosterone levels, although independent of age, appear to be a more likely mediator of breeding decision and egglaying date. In long-lived birds, the relationship between age and timing of breeding may be rather indirect, as other age-related factors such as breeding experience or foraging skills may have a deeper impact on baseline corticosterone than age per se.

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Section: Methodsmentioning

confidence: 99%

Age and the timing of breeding in a long‐lived bird: a role for stress hormones?

Goutte¹,

Antoine

Weimerskirch

et al. 2010

Functional Ecology

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“…), fledging is all but assured. Thus, hatching success is probably the most critical component of reproductive success for storm-petrel parents, especially given the energetic demands of incubation in seabirds (Ricklefs et al 1986;Chastel et al 1995a;Barbraud and Chastel 1999;Barbraud et al 2000).…”

Section: Discussionmentioning

confidence: 99%

“…Variation in atmospheric and oceanographic conditions have great effects on seabird diet ) and body condition (Chastel et al 1995a,b;Barbraud et al 2000). Such uncertainty results in high annual variability in seabird reproductive success and survival (e.g., Chastel et al 1993;Erikstad et al 1998;Sydeman et al 2001;Croxall et al 2002).…”

Section: Study Populationmentioning

confidence: 99%

“…The 45-g storm-petrels nest in burrows, primarily on the northern half of the island under a grove of spruce, fir, and mixed hardwood. Parents alternate incubation bouts during a 40-to 44-day incubation period (Huntington et al 1996), probably the most energetically demanding phase of seabird reproduction (Chastel et al 1995a;Barbraud and Chastel 1999;Barbraud et al 2000). The adult at the nest fasts for up to seven days, losing up to 7.5% of its initial body mass daily while its partner forages at sea (Ricklefs et al 1986).…”

Section: Study Populationmentioning

confidence: 99%

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Age-Specific Reproductive Success: Evidence for the Selection Hypothesis

2004

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Abstract. Age-specific reproductive success has been demonstrated in many species. Three hypotheses have been raised to explain this general phenomenon: the experience hypothesis based on age-specific reproductive experience, the effort hypothesis based on age-specific reproductive effort, and the selection hypothesis based on progressive disappearance of phenotypes due to variation in individual productivity and survival. We used data from a long-term study of Leach's storm-petrels (Oceanodroma leucorhoa) to present a single test of mutually exclusive predictions about the relationship between early breeding success and longevity. There should be no correlation between early breeding success and longevity under the experience hypothesis, a negative correlation under the effort hypothesis, and a positive correlation under the selection hypothesis. We found a significant (P Ͻ 0.0001) positive relationship between success in the first two breeding attempts and longevity in this population of long-lived seabirds, strongly suggesting that low-productivity parents were also less likely to survive early breeding. These data provide some of the strongest support to date for the selection hypothesis.

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“…One of the most challenging areas in evolutionary biology and ecology has been to determine the relationship between adult body size and fitness. Across a range of vertebrate and invertebrate taxa, numerous empirical studies have reported that body size is correlated with life‐history and demographic traits such as mating efficiency, dispersal capability, and, most importantly, lifetime reproductive success (Berrigan, 1991; Blackburn, 1991; Visser, 1994; Luiselli et al ., 1996; Barbraud et al ., 2000; Rasa et al ., 2000; Sokolovska et al ., 2000; Bezemer & Mills, 2003; Bochdanovits & De Jong, 2003; Jervis et al ., 2003; Skow & Jakob, 2003; Wissinger et al ., 2004).…”

Section: Introductionmentioning

confidence: 99%

Influence of adult nutrition on the relationship between body size and reproductive parameters in a parasitoid wasp

Bezemer

Harvey

Mills³

2005

Ecological Entomology

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1. An important constraint upon life-history evolution in parasitoids is the limit imposed by body size on allocation of limited metabolic resources to different fitness-related physiological functions such as reproduction and survival.2. The influence of adult nutrition on reproductive and maintenance variables was studied in the synovigenic ectoparasitoid Mastrus ridibundus, and it was determined whether resource allocation to these different functions depends on body size.3. Over the course of adult life there was a positive relationship between body size and the number of mature eggs in adult females both in the presence and absence of food. However, only in the presence of food did egg maturation rates increase significantly with body size. Starved wasps produced significantly smaller eggs than fed ones, which has not been documented before. Moreover, starved wasps produced fewer offspring than fed wasps, and attacked fewer hosts.4. The availability of food had a major effect on longevity, with fed females living about 10 times longer than starved ones. There was also a positive relationship between body size and longevity. In starved wasps, this relationship was the same both in the presence and absence of hosts, but in fed wasps there was a positive relationship between body size and longevity in the absence of hosts only. Allocation to initial eggs relative to lifetime progeny production did not decline with body size.5. The data reveal that in M. ridibundus the trade-off between maintenance and reproduction varies with life expectancy.

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Body size and determinants of laying date variation in the Snow Petrel Pagodroma nivea

Cited by 18 publications

References 50 publications

Age and the timing of breeding in a long‐lived bird: a role for stress hormones?

Age and the timing of breeding in a long‐lived bird: a role for stress hormones?

Age-Specific Reproductive Success: Evidence for the Selection Hypothesis

Influence of adult nutrition on the relationship between body size and reproductive parameters in a parasitoid wasp

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