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. (2011). Capture and blood sampling do not affect foraging behaviour, breeding success and return rate of a large seabird: the black-browed albatross. Polar Biol., 34(3), 353–361.
Abstract: During the last decades, eco-physiological studies have usually relied on the collection of blood from wild organisms in order to obtain relevant physiological measures. However, accurate estimates of the impact of capture and blood collection on performances of Polar seabird species have rarely been conducted. We investigated for the first time the effects of a blood sampling process on subsequent foraging behaviour, reproductive performance and return rate of black-browed albatrosses ( Thalassarche melanophris ) at Kerguelen Islands. We did not find any evidence that the blood sampling process as conducted in our study had detrimental effects on the breeding or foraging strategies or performance of black-browed albatrosses. Because blood collection can be performed in several different ways, we recommend that eco-physiologists conduct pilot studies to test whether their blood sampling process affects the performances of their study species.
Keywords: Biomedical and Life Sciences,
Programme: 109
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Duneau, D., Boulinier, T., Gomez-Diaz, E., Petersen, A., Tveraa, T., Barrett, R.T. & McCoy, K.D. (2008). Prevalence and diversity of lyme borreliosis bacteria in marine birds. Infect. Genet. Evol., 8, 352–359.
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Duhamel G., Ozouf Costaz C., Cattaneo Berrebi G. & Errebi P. (1995). Interpopulation relationships in two species of Antarctic fish Notothenia rossii and Champsocephalus gunnari from the Kerguelen Islands: an allozyme study. Antarct. Sci., 7(4), 351–356.
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Magand O., Frezzotti M., Pourchet M., Stenni B., Genoni L. & Fily M. (2005). Climate variability along latitudinal and longitudinal transects in East antarctica. Annals of glaciology, 39, 351–358.
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Miramand P. & Bentley D. (1992). Concentration and distribution of heavy metals in tissues of two cephalopods, Eledone cirrhosa and Sepia officinalis from the French Coast of the English channel. Mar. Biol., 114(3), 349–353.
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Fossat, E. (2005). The Concordia station on the Antarctic plateau: The best site on Earth for the 21st Century Astronomers. JOURNAL OF ASTROPHYSICS AND ASTRONOMY, 26, 349.
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Masson V., Vimeux F., Jouzel J. et al. (2000). Holocene climate variability in Antarctica based on 11 ice-core isotopic records. Quaternary research, 54(3), 348–358.
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Harding A.M.A., Kitaysky A.S., Hall, M.E., Welcker, J., Karnovsky, N.J., Talbot, S.L., Hamer, K.C. & Gremillet D. (2009). Flexibility in the parental effort of an Arctic-breeding seabird. Functional ecology, 23(2), 348–358.
Abstract: Parental investment strategies are considered to represent a trade-off between the benefits of investment in current offspring and costs to future reproduction. Due to their high residual reproductive value, long-lived organisms are predicted to be more reluctant to increase parental effort. We tested the hypothesis that breeding little auks (Alle alle) have a fixed level of reproductive investment, and thus reduce parental effort when costs associated with reproduction increase. To test this hypothesis we experimentally increased the flight costs of breeding little auks via feather clipping. In 2005 we examined changes in the condition of manipulated parents, of the mates of manipulated parents, and of their chick as direct measures of change in parental resource allocation between self-maintenance and current reproduction. In 2007 we increased sample sizes to determine whether there was a physiological cost (elevated corticosterone, CORT) associated with the manipulation. We found that: (i) clipped birds and their mates lost more body mass than controls, but there was no difference in mass loss between members of a pair; (ii) clipped birds had higher CORT levels than control birds; (iii) there were no inter-annual differences in body mass and CORT levels between clipped individuals and their mates at recapture, and (iv) chicks with a clipped parent had lower peak and fledging mass, and higher CORT levels than control chicks in both years. Contrary to our hypothesis, the reduction in body mass of partners to clipped birds suggests that little auks can increase parental effort to some extent. Nonetheless, the lower fledging mass and higher CORT of chicks with a clipped parent indicates provisioning rates may not have been fully maintained. As predicted by life-history theory, there may be a threshold to the additional reproductive costs breeders will accept, with parents prioritizing self-maintenance over increased provisioning effort when foraging costs become too high.
Programme: 388
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. (2002). A glacio-chemical characterisation of the new EPICA deep drilling site on Amundsenisen, Dronning Maud Land, Antarctica. Annals of glaciology, 35, 347–354.
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. (2002). Artificial ion tracks in volcanic dark mica simulating natural radiation damage: a scanning force microscopy study. Nuclear Instruments and Methods in Physics Research Section B, 191(1-4), 346–351.
Abstract: A new dating technique uses alpha-recoil tracks (ART), formed by the natural /?-decay of U, Th and their daughter products, to determine the formation age of Quaternary volcanic rocks (/<106 a). Visualization of etched ART by scanning force microscopy (SFM) enables to access track densities beyond 108cm-2 and thus extend the new ART-dating technique to an age range />106 a. In order to simulate natural radiation damage, samples of phlogopite, originating from Quaternary and Tertiary volcanic rocks of the Eifel (Germany) and Kerguelen Islands (Indian Ocean) were irradiated with U, Ni (11.4 MeV/u), Xe, Cr, Ne (1.4 MeV/u) and Bi (200 keV) ions. After irradiation and etching with HF at various etching times, phlogopite surfaces were visualized by SFM. Hexagonal etch pits are typical of U, Xe and Cr ion tracks, but the etch pits of Ni, Ne and Bi ion tracks are triangular. Surfaces irradiated with U, Xe, Cr and Ni ions do not show any significant difference between etch pit density and irradiation fluence, whereas the Ne-irradiated surface show /~14 times less etch pit density. The etching rate vH (parallel to cleavage) depends on the chemical composition of the phlogopite. The etching rate vT' (along the track) increases with energy loss.
Programme: 251
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