Age-Dependent Survival of Breeding Short-Tailed Shearwaters Puffinus tenuirostris

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

doi:10.2307/4993

Cited by 79 publications

(54 citation statements)

References 37 publications

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“…There are no published data on the age at first breeding for Sooty Shearwater, so we used an estimate for a closely-related species, Short-tailed Shearwater (Bradley et al 1989). Changes in burrow entrance density …”

Section: Generation Timementioning

confidence: 99%

Decline of Sooty Shearwaters, Puffin us griseus, on The Snares, New Zealand

Scott¹,

Scofield²,

Hunter³

et al. 2008

PPRST

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Section: Generation Timementioning

confidence: 99%

Decline of Sooty Shearwaters, Puffin us griseus, on The Snares, New Zealand

Scott¹,

Scofield²,

Hunter³

et al. 2008

PPRST

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“…As shearwater fl edglings migrate independently to the Northern Hemisphere and remain apart from older birds while there, they have little foraging experience or knowledge of local waters suitable for feeding; thus, their survival is most likely lower than that of older birds, with differing energy storage among age groups. Knowledge of energy storage differences among the shearwater age classes before and after the northern migration and the time to recover from energy shortage is important not only to clarify the reasons for the recent mortality events observed in the Northern Hemisphere but also to understand the higher survivorship of adults (Bradley et al 1989) from the viewpoint of nutritional ecology. I here report body composition differences in juvenile and adult Short-tailed Shearwaters and composition changes preand post-migration, focusing in particular on the disparity in nutritional recovery in the far northern waters of the Northern Hemisphere.…”

Section: Introductionmentioning

confidence: 99%

“…They are followed by sub-adults and young one or two months later. Short-tailed Shearwaters are long-living seabirds, with 87-95% annual survivorship (Bradley et al 1989). They begin to breed at about 6-7 years of age (Bradley et al 1989).…”

mentioning

confidence: 99%

Nutrient reserve difference between young and adult Short-tailed Shearwaters, Puffinus tenuirostris, before and after trans-equatorial migration

Oka¹

2008

PPRST

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The Short-tailed Shearwater, Pujfinus tenuirostris, is a trans-equatorial migrant, breeding in Tasmania and ocher parts of southeastern Australia during the Austral summer and migrating to the northern North Pacific for the Boreal summer. Juveniles, in particular, suffer considerable mortality during the migration. Body composition of juveniles and adults in terms of body mass, lipid content, pecmral muscle mass and bone marrow content, before and after migration was investigated. Juveniles varied greacly in body composition pre-and post-migration and took longer to recover their nutritional status than adults. Adulcs sustained a better body composition, showing a moderate decrease in body fat upon arrival in the nortb and recovering their body mass and lipid supply during their stay. The lipid content of beachcast bird carcasses (mean, 4 g) was the minimum necessary for cell membranes and was not metabolisable for energy. Pectoral muscle protein remained high among birds under hyper-nutritional conditions, and decreased gradually at first as lipids decreased, and then rapidly at lace malnutritional stages when most lipids had been utilised for energy. Althm1gh adulcs sustained their nutritional status, the amount of lipids in adulcs leaving the Tasmanian colony was insufficient to accomplish the long-distance migration, so post-breeding adults probably first visited Antarctic waters ro accumulate fat reserves before commencing their northward migration. Key Words: age group, body composition, fat deposit, marrow, nutritive difference, pectoral muscle, protein, Puffinus tenuirostris, Short-tailed Shearwater, trans-equatorial migrant. INTRODUCTIONLong-distance migrations through areas with poor nutrient productivity are critical events for some animals. Recent evidence has shown that the Sooty Shearwater, Pujfinus griseus (J.F. Gmelin, 1789), a New Zealand trans-equatorial migratory seabird, traversed low-latitude waters with low productivity at mean speeds as high as 910 km per day while rarely foraging (Shaffer et al. 2006). To accomplish these long journeys without refueling, they must have sufficient energy reserves, though the storage abilities of most birds are limited by the constraints of fl ight and wing loading.The Short-tailed Shearwater, Puj finus tenu irostris (Temminck, 1835), which breeds in Tasmania and other parts of southeastern Australia during the Austral summer (October to April), migrates one of the longest distances of any migratory bird, annually completing a trans-equatorial migration to spend the Boreal summer (May to September) in the highly productive waters of the northern North Pacifi c, Okhotsk Sea and Bering Sea (Serventy et al. 1971, Shuntov 1974, Warham 1996. This species has evolved a feeding apparatus that allows it to take small marine animals effectively (Morgan & Ritz 1982), which are sparsely distributed in tropical and sub-tropical oceans along its migratory pathway (Reid 1962). Thus, the survival of the migrants may depend greatly on energy deposits acquired before depart...

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“…Such capture-recapture studies have included various long-lived seabirds [e.g. Manx shearwater Puffinus puffinus (Perrins et al 1973); kittiwake Rissa tridactyla (Coulson and Wooller 1976;Aebischer and Coulson 1990); herring gull Larus argentatus (Chabrzyk and Coulson 1976); fulmar Fulmarus glacialis (Dunnett and Ollason 1978); Adelie penguin Pygoscelis adeliae (Ainley and DeMaster 1980); common eider Somateria mollissima (Coulson 1984); shag Phalacrocorax aristotelis (Aebischer 1986;Harris et al 1994); short-tailed shearwater Puffinus tenuirostris (Bradley et al 1989); wandering albatross Diomedea exulans (Weimerskirch 1992); common murre Uuria aalge (Sydeman 1993)], waders (e.g. Temminck's stint Calidris temminckii) (Hilden 1978), small passerines [e.g.…”

Section: Introductionmentioning

confidence: 99%

Survival of male Tengmalm's owls under temporally varying food conditions

et al. 2002

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We analysed whether annual survival of male Tengmalm's owls in western Finland varies according to changes in the abundance of their main prey, Microtus voles. Our analyses were based on capture-recapture data over five 3-year population cycles of voles from 1981to 1995, each cycle consisting of consecutive years of low, increasing and decreasing vole abundance. Survival estimates of males in the increasing vole years (ca. 55%) were higher than in the decreasing vole years. In the latter case, males faced a drastic crash in Microtus vole numbers, and only about one-third of males survived over this crash. After the crash of vole populations, male survival increased rapidly (up to 76%) according to the recovery of Microtus vole populations. These results show that temporal variation in the abundance of their main prey modifies the survival of male Tengmalm's owls. In addition to survival, recapture rates also varied, largely due to the fact that in poor vole years a majority of males skipped breeding. The large among-cycle phase variation in survival (25-76%) probably creates selection for phenotypic plasticity in life-history traits related to survival and reproduction.

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Age-Dependent Survival of Breeding Short-Tailed Shearwaters Puffinus tenuirostris

Cited by 79 publications

References 37 publications

Decline of Sooty Shearwaters, Puffin us griseus, on The Snares, New Zealand

Decline of Sooty Shearwaters, Puffin us griseus, on The Snares, New Zealand

Nutrient reserve difference between young and adult Short-tailed Shearwaters, Puffinus tenuirostris, before and after trans-equatorial migration

Survival of male Tengmalm's owls under temporally varying food conditions

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