At-Sea Distribution and Behavior of Streaked Shearwaters (<i>Calonectris leucomelas</i>) During the Nonbreeding Period

Yamamoto, Takashi; Takahashi, Akinori; Katsumata, Nobuhiro; Sato, Katsufumi; Trathan, Philip N.

doi:10.1525/auk.2010.10029

Cited by 36 publications

(37 citation statements)

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“…variation in the timing of southward migration between individuals (more than 3 months 89 between the first and last birds) (Yamamoto et al, 2010). Consequently, these results 90…”

Section: *Manuscriptmentioning

confidence: 78%

“…Furthermore, we may 92 expect changes in the subsequent wintering behaviour in relation to prior breeding 93 performance; our previous study examined the migratory behaviour of this species only 94 for one season (Yamamoto et al, 2010). Variation in the wintering destination (3 95 choices) and timing of migration (over 3 months) among a population of streaked 96 shearwaters may provide us with an opportunity to examine repeatability or plasticity in 97 behaviour of individuals outside the breeding season over different years.…”

Section: *Manuscriptmentioning

confidence: 99%

“…were migrating south when they crossed a boundary 500 km south or west of the 174 breeding colony (Yamamoto et al, 2010 final wintering destinations after crossing one of three predetermined boundaries (10°N 176 for the seas off northern New Guinea, the Equator for the Arafura Sea, and 120°E for 177 the South China Sea), as defined in Yamamoto et al (2010). Similarly, we assumed that 178 birds were migrating north when they flew from one of the three predetermined 179 boundaries to within 500-km of the colony.…”

Section: Data Analysis 161mentioning

confidence: 99%

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Individual consistency in migratory behaviour of a pelagic seabird

Yamamoto

Takahashi

Sato

et al. 2014

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23Many animals migrate between breeding and wintering areas; however, whether each 24 animal behaves consistently in space and time between consecutive years is less well 25 understood. Furthermore, previous breeding state (successful or failed) is often not 26 considered when attempting to understand consistent individual differences in 27 behaviour that are likely to impact upon the subsequent behaviour. Between 2006 and 28 2010, we used geolocators to track the migratory movements of a pelagic seabird, the 29 streaked shearwater Calonectris leucomelas, with individuals (N = 46) being followed 30 for two years or more, including 23 birds that had chicks in two seasons and 23 birds in 31 just one season. All individuals, except for one bird, migrated to the same broad 32 wintering areas, and their migratory route as well as the centre of wintering distribution 33 did not change in relation to the previous breeding outcomes. Migration schedules 34 (dates of departure from the breeding colony, southward and northward migrations, and 35 first return to the colony) did not differ significantly between years for individuals that 36 had chicks during both years, while failed individuals left the breeding colony and 37 appeared to start the southward migration at an earlier date than the previous successful 38 year. Nonetheless, the timing of the southward migration was consistent within 39 individuals, including both males and females, over successive years regardless of the 40 previous breeding outcome, and also the timing of first return back to the colony for 41 females that had chicks in the both previous years and eggs in the both following season. 42This may imply the existence of individual-specific broad time schedules, possibly a 43 circannual rhythm, though ecological conditions might affect the exact timing of the 44 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 3 actual departure event. Our results present evidence for high levels of individually 45 consistent behaviour for this pelagic seabird outside the breeding season. 46 47

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“…variation in the timing of southward migration between individuals (more than 3 months 89 between the first and last birds) (Yamamoto et al, 2010). Consequently, these results 90…”

Section: *Manuscriptmentioning

confidence: 78%

Section: *Manuscriptmentioning

confidence: 99%

Section: Data Analysis 161mentioning

confidence: 99%

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Individual consistency in migratory behaviour of a pelagic seabird

Yamamoto

Takahashi

Sato

et al. 2014

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“…During stopovers, sooty shearwaters flew for 61% of the day and just 20% of the night which is consistent with expectations for diurnal foragers (Shaffer et al 2009) and similar to stopover behavior of Cory's shearwaters, which flew for 48 and 18% of the day and night, respectively . With the exception of streaked shearwaters Calonectris leucomelas which averaged 34 to 66% of total migration time in flight (Yamamoto et al 2010), and Guilford et al's (2009) study of migration stop overs by Manx shearwaters, how shearwaters apportion their time during migration is poorly known. Compared with some larger Procellariiformes, mig rating sooty shearwaters were more diurnally active (78% of the day in flight, overall) than wandering Diomedea exulans (66%) and light-mantled albatrosses Phoebetria palpebrata (75%), but somewhat less active than black-browed albatrosses Thalassarche melanophris (82%), greyheaded albatrosses T. chrysostoma (89%) and whitechinned petrels (85%; Mackley et al 2010Mackley et al , 2011.…”

Section: Discussionmentioning

confidence: 99%

Trans-equatorial migration and habitat use by sooty shearwaters Puffinus griseus from the South Atlantic during the nonbreeding season

Hedd

Montevecchi²,

Otley³

et al. 2012

Mar. Ecol. Prog. Ser.

111

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“…Streaked shearwaters are monogamous seabirds. They return annually to their breeding colony beginning in late March, following their migration from southern wintering areas, and lay a single egg in mid-to-late June (Yoshida 1981, Yamamoto et al 2010. The pre-laying period lasts ca.…”

Section: Methodsmentioning

confidence: 99%

Foraging areas of streaked shearwaters in relation to seasonal changes in the marine environment of the Northwestern Pacific: inter-colony and sex-related differences

Yamamoto

Takahashi²,

Oka³

et al. 2011

Mar. Ecol. Prog. Ser.

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As the spatial distribution of marine organisms is often affected by seasonal changes, pelagic seabirds may change their foraging areas in response to seasonal changes in the marine environment. Here, we examined the foraging area of streaked shearwaters Calonectris leucomelas, breeding at Sangan (SA) and Mikura Islands (MK), Japan, from spring to summer during pre-laying and incubation periods. Those colonies are located at the north and south of the Northwestern Pacific's Kuroshio-Oyashio transition area where high seasonal temperature changes are observed, and where, consequently, birds may show comparable responses to such changes. Our results showed that streaked shearwaters from both colonies shifted their foraging areas northwards as the season progressed. The seasonal shift of foraging areas appeared to coincide with the movement pattern of pelagic fishes that migrate northward in association with the increase in water temperature. However, the pattern of seasonal movement differed between the 2 colonies; shearwaters from SA moved their foraging area along the coastal area of the Kuroshio-Oyashio transition, while those from MK moved along the Kuroshio Extension. Our results also indicated sex-related differences in this general pattern: females showed clear seasonal changes in foraging area, while males did not. During the pre-laying period males returned to the colony frequently to defend their nests or mates, and spent less time at sea. Our results suggest that streaked shearwaters changed their foraging areas in response to seasonal changes in the marine environment, although colony location and sex-related differences in reproductive roles may constrain the birds' responses to seasonal change.

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At-Sea Distribution and Behavior of Streaked Shearwaters (Calonectris leucomelas) During the Nonbreeding Period

Cited by 36 publications

References 51 publications

Individual consistency in migratory behaviour of a pelagic seabird

Individual consistency in migratory behaviour of a pelagic seabird

Trans-equatorial migration and habitat use by sooty shearwaters Puffinus griseus from the South Atlantic during the nonbreeding season

Foraging areas of streaked shearwaters in relation to seasonal changes in the marine environment of the Northwestern Pacific: inter-colony and sex-related differences

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