Influence of environmental factors and energetic value of food on Little Tern<i>Sterna albifrons</i>chick growth and food delivery

Paiva, Vítor H.; Ramos, Jaime A.; Catry, Teresa; Pedro, Patrícia; Medeiros, Renata; Palma, Jorge

doi:10.1080/00063650609461410

Cited by 32 publications

(26 citation statements)

References 17 publications

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“…Possibly during the receding tide, fish become more grouped and conspicuous in these channels and easier to catch (Peste et al 2004). Paiva et al (2006) found that the number of foraging little terns was higher during low tide. However, this was not the case in our study where the number of Damara terns was similar across all four tidal phases.…”

Section: Prey Capture Successmentioning

confidence: 94%

Prey capture success and chick diet of Damara ternsSterna balaenarumin Namibia

Braby

Underhill

Simmons

2011

African Journal of Marine Science

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Feeding terns are affected by a variety of environmental conditions. We studied prey capture success of Damara terns Sterna balaenarum in relation to six variables at two breeding colonies in southern Namibia: tidal phase, wind speed, water clarity, cloud cover, water depth and locality. Damara terns dived most successfully at high tide and least successfully at low tide. Prey capture success improved whereas total dive rate decreased with increasing wind speed. Prey capture success was highest in the least turbid water, but was not significantly affected by cloud cover or water depth, and there was no significant difference in dive success between localities. The diet of Damara tern chicks were studied throughout Namibia. Of 55 prey items collected, Cape silverside Atherina breviceps, southern mullet Liza richardsonii and Cape anchovy Engraulis encrasicolus were among the most abundant prey species. At least nine prey species were found in the diet of Damara tern chicks that had not been previously reported from Namibian waters

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Section: Prey Capture Successmentioning

confidence: 94%

Prey capture success and chick diet of Damara ternsSterna balaenarumin Namibia

Braby

Underhill

Simmons

2011

African Journal of Marine Science

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“…Because the adult blood δ 15 N was constantly higher during chick feeding than during incubation, we may argue that adults targeted higher-quality food to feed their chicks. Indeed, this strategy is used by other seabird species, such as the Adélie penguins (Pygoscelis adeliae; Cherel 2008) and little terns (Sternula albifrons; Paiva et al 2006). However, the diet composition of Faial and Berlengas birds changed little between breeding periods (incubation vs. chick rearing).…”

Section: The Influence Of Breeding Period On Carbon Isotopic Segregationmentioning

confidence: 99%

Foraging ecology of Cory’s shearwaters in different oceanic environments of the North Atlantic

Paiva¹,

Xavier²,

Geraldes³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…Considering chick age was necessary, due to the potential for adult seabirds to adjust prey size based on the different food requirements of chicks of different sizes (Bertram et al 1996, Suryan et al 2002, Paiva et al 2006. To that end, hatch date was recorded for each chick when possible.…”

Section: Confounding Effect Of Young Chicksmentioning

confidence: 99%

Trade-offs in prey quality and quantity revealed through the behavioral compensation of breeding seabirds

Schrimpf¹,

Parrish²,

Pearson³

2012

Mar. Ecol. Prog. Ser.

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Many productive ocean ecosystems are also highly variable, resulting in complex trophic interactions. We analyzed interannual patterns in the diet of a seabird, the common murre Uria aalge, in a region of high oceanographic productivity, the northern California Current, to investigate how these top predators adjust their chick provisioning to cope with environmental variability. Murres relied chiefly on Pacific herring Clupea harengus pallasi and surf smelt Hypomesus pretiosus to provision chicks, although they regularly returned 8 other fish taxa. Provisioning success was measured by the energy return rate to chicks, which in turn was disarticulated into energy per meal (quality) and meal delivery rate (quantity). Parents exhibited 'compensation' during 2 years in which smaller, low quality prey were returned more quickly than in years with normal (i.e. 'good') provisioning. Despite the increased delivery rate, energy return rates were still lower in 'compensation' vs. 'good' years. The lowest energy return rates occurred in 3 'poor' years, during which ocean productivity was also depressed. Our results suggest that murres in this system have the ability to shift provisioning strategies to deal with some variability in prey resources, but not when limited by exceptionally poor environmental conditions.

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Influence of environmental factors and energetic value of food on Little TernSterna albifronschick growth and food delivery

Cited by 32 publications

References 17 publications

Prey capture success and chick diet of Damara ternsSterna balaenarumin Namibia

Prey capture success and chick diet of Damara ternsSterna balaenarumin Namibia

Foraging ecology of Cory’s shearwaters in different oceanic environments of the North Atlantic

Trade-offs in prey quality and quantity revealed through the behavioral compensation of breeding seabirds

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