Foraging behaviour of four albatross species by night and day

Phalan, Ben; Phillips, Richard A.; Silk, Janet R. D.; Afanasyev, Vsevolod; Fukuda, Akira; Fox, James W.; Catry, Paulo; Higuchi, Hiroyoshi; Croxall, John P.

doi:10.3354/meps340271

Cited by 140 publications

(174 citation statements)

References 40 publications

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“…Trip distance often varies across the breeding season, reflecting different constraints (Weimerskirch et al 1993, Guinet et al 1997, Beauplet et al 2004, Lescroël & Bost 2005, Phalan et al 2007). Older chicks have greater food needs and greater storage capacity than younger chicks (Walker & Boersma 2003) which may both require and allow adults to go farther to forage when chicks are older.…”

Section: Introductionmentioning

confidence: 99%

Foraging distance affects reproductive success in Magellanic penguins

Boersma¹,

Rebstock²

2009

Mar. Ecol. Prog. Ser.

100

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Foraging distance affects reproductive success and other demographic parameters in seabirds and pinnipeds. We tracked breeding Magellanic penguins Spheniscus magellanicus at Punta Tombo, Argentina using satellite transmitters from 1996 to 2006 (n = 148 males, 57 females) to investigate the variability in foraging distance and its effects on reproductive success. The time a penguin was away from its nest predicted the distance it swam during all stages of the breeding season (p < 0.005); this relationship was linear during incubation and nonlinear during chick rearing. During incubation, penguins went 1.0 km farther from the colony for every additional hour they were away from the nest, and the distance penguins traveled predicted the mean colony reproductive success. When chicks were > 30 d old, the probability of fledging 2 chicks was highest when penguins went less than 70 km from their nests. Penguins that went between 70 and 180 km from their nests were most likely to raise one chick, and the probability of losing both chicks increased with trip distance. Females and males made trips of similar distance. Foraging-trip distance varied within breeding season (p < 0.005). Penguins went farthest during incubation (411 ± 11.8 km), and stayed closest (61 ± 3.9 km) when chicks were < 30 d old, requiring parents to guard them. When chicks were older, adults traveled 111 ± 5.0 km. Mean foraging-trip distance varied among years (p < 0.005) by factors of 1.5 to 1.8, and trips by an individual penguin varied by a factor of 22.

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Section: Introductionmentioning

confidence: 99%

Foraging distance affects reproductive success in Magellanic penguins

Boersma¹,

Rebstock²

2009

Mar. Ecol. Prog. Ser.

100

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“…Interestingly, night-time activity at sea is not influenced by moonlight levels in this species as found in other species (Phalan et al 2007;Yamamoto et al 2008;Dias et al 2012a).…”

Section: Discussionmentioning

confidence: 69%

Wanderer of the deepest seas: migratory behaviour and distribution of the highly pelagic Bulwer’s petrel

et al. 2015

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Small-sized nocturnal Procellariiformes are abundant predators in oceanic areas worldwide and are thought to play an important role in many marine food webs as consumers of superabundant mesopelagic prey. However, the spatial ecology and foraging behaviour of the great majority of these species remain largely unknown. We studied the non-breeding distribution and at-sea activity of a migratory small-sized Procellariiform, the Bulwer's petrels Bulweria bulwerii, from the Selvagem Island colony (subtropical Northeast Atlantic). We found that soon after breeding Bulwer's petrels migrate towards deep (mean depth of 4416 m), open oceanic waters of the tropical Atlantic, spending the winter far from shelf and shelf-break areas, on regions avoided by most other avian migrants in the Atlantic. When at sea, Bulwer's petrels spent more time flying during the night ([90 %, all year round) than any other seabird studied so far. This nighttime activity was not influenced by the lunar cycle, suggesting that this highly specialised nocturnal seabird is probably very well adapted to locating and capturing prey even in very dark conditions. The results from the present study may have important implications for the identification of important bird areas in the marine realm, whose boundaries have been delineated so far mostly on the basis of the distribution and behaviour of better studied medium-to large-sized seabirds.Keywords At-sea activity Á Bulwer's petrels Á Migration Á Procellariiformes Á Seabirds Zusammenfassung Wanderer ü ber der Tiefsee: Zugverhalten und Verbreitung des hochgradig pelagischen Bulwersturmvogels

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“…Problemas similares se han detectado en otros estudios (Murray et al, 1992;Duckworth, 1995). Sin embargo, se sabe que los albatros buscan y capturan activamente la mayoría de sus presas durante el día a través del año (Mackley et al, 2010;Phalan et al, 2007), mientras que la fardela negra grande parece exhibir una alta actividad nocturna (Mackley et al, 2011). Considerando lo anterior se incluyó la covariable desfase de la hora del ocaso respecto de la hora de inicio del lance, la cual se usó como proxy de las condiciones de luminosidad ambiental existentes durante el calado de manera de determinar como estas condiciones afectan la actividad forrajera de estas aves marinas.…”

Section: Discussionunclassified

“…5c), que en aquellas de talla intermedia del genero Thalassarche, como el albatros de ceja negra, particularmente activos en la primera parte de la noche ( Fig. 3a; Weimerskirch & Guionnet, 2002, Phalan et al, 2007, mientras que la fardela negra grande forrajea tanto de día como de noche, al igual que lo mencionado por Cherel et al (1996).…”

Section: Discussionunclassified

“…reveló que en los lances realizados con índices de luminosidad mayores a 0,5 (fases mas luminosas), la tasa de captura incidental para las tres especies agrupadas fue 1.460% mayor que la tasa observada en lances realizados en las fases menos luminosas (índice luminosidad <0,5), no registrándose captura incidental de albatros errante ni de fardela negra grande en esta última condición. Estos resultados confirman la importancia que tiene el ciclo lunar en relación al nivel de actividad nocturna que exhiben las aves marinas y su interacción con la actividad pesquera (Phalan et al, 2007;Mackley et al, 2011;Pinet et al, 2011).…”

Section: Discussionunclassified

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Determinacion de los factores que inciden en la captura incidental de aves marinas en la flota palangrera pelagica chilena

González¹,

Vega²,

Barbieri³

et al. 2012

lajar

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Determinación de los factores que inciden en la captura incidental de aves marinas en la flota palangrera pelágica chilena RESUMEN. Se analizó la relación entre la variabilidad de la tasa de captura incidental de aves marinas en la pesquería palangrera pelágica de pez espada (Xiphias gladius) y diversos factores temporales, ambientales, espaciales y pesqueros, entre 2007 y 2009. Los resultados muestran que las operaciones de pesca de esta flota afectan principalmente a los albatros, grupo que concentra el 83,7% de la captura incidental de aves marinas registrada en el período. Esta captura incidental se debe en primera instancia a la presencia del Frente Subtropical del Pacífico Sur, sistema que provoca la sobreposición entre la actividad de esta flota con la distribución espacial de aves marinas durante la fase residente del período no reproductivo. La variabilidad en esta captura incidental estaría fuertemente relacionada a los estímulos visuales (medido mediante el porcentaje de luces químicas y porcentaje de calamar) y las condiciones de luminosidad ambiental existentes en los períodos de forrajeo diurno y nocturno de estas aves marinas durante el calado (medido a través del desfase de la hora del ocaso con respecto a la hora de inicio del calado y fase lunar). Palabras clave: captura incidental, aves marinas, palangre pelágico, pesquería de pez espada, albatros, Frente Subtropical del Pacifico Sur. Determination of factors affecting the bycatch of seabirds in Chilean pelagic longline fleetABSTRACT. We analized the relationship between the variability in the rate of seabird bycatch in pelagic longline fishery for swordfish (Xiphias gladius), and several temporary, environmental, spatial and fisheries factors for the fishing period from 2007 to 2009. The results show that the fishing operations of this fleet mainly affect the albatross, group that accounts for 83.7% of the incidental catch of seabirds recorded in the period. This bycatch is due primarily to the presence of the South Pacific Subtropical Front, a system that causes the overlap between the activities of this fleet with the spatial distribution of these seabird species during the resident phase of the nonbreeding period. By the other hand, the variability in bycatch would be strongly linked to visual stimuli (measured by the percentage of chemical lights and percentage of squid) and the existing ambient lighting conditions during the set (measured by the lag time of sunset with respect to time start set and lunar phase).

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Foraging behaviour of four albatross species by night and day

Cited by 140 publications

References 40 publications

Foraging distance affects reproductive success in Magellanic penguins

Foraging distance affects reproductive success in Magellanic penguins

Wanderer of the deepest seas: migratory behaviour and distribution of the highly pelagic Bulwer’s petrel

Determinacion de los factores que inciden en la captura incidental de aves marinas en la flota palangrera pelagica chilena

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