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Reynaud L. & Dobrovolski S.G. (1995). Statistical analysis of glaciers fluctuations data. World Glacier Monitoring, Unesco, Haeberli Ed., .
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Jacob D.J. (1996). Intercomparison of global atmospheric transport models using 222Rn and other short-lived tracers. J. Geophys. Res., 102, 5953–5970.
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Weimerskirch H., Doncaster C.P. & Cuenot Chaillet F. (1994). Pelagic seabirds and the marine environment:foraging patterns of wandering albatrosses in relation to prey availability and distribution of their prey. Proc. Biol. Sci., 255, 91–97.
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Bried J. & Jouventin P. (1999). influence of breeding success on fidelity in long-lived birds: an experimental. J. Avian Biol., 30, 392–398.
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Pisano E. & Ozouf Costaz C. (2000). Chromosome change and evolution in the Antarctic fish suborder Notothenioidei. Antarct. Sci., 12(3), 334–342.
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Van Den Broeke M.R., Winther J.G., Isaksson E., Pinglot J.F., Karlöf L., Eiken T. & Conrad L. (1999). Climate variables along a traverse line in Dronning Maud Land, East Antarctica. Journal of glaciology, 45, 295–301.
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Melvold K., Hagen J.O., Pinglot J.F. & Gundestrup N. (1998). Large spatial variation in accumulation rate in Jutulstraumen ice stream, Dronning Maud Land, Antarctica. Annals of glaciology, 27, 231–237.
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Lartaud Franck, Chauvaud Laurent, Richard Joëlle, Toulot Aurore, Bollinger Claire, Testut Laurent, Paulet Yves-Marie, . (2010). Experimental growth pattern calibration of Antarctic scallop shells (Adamussium colbecki, Smith 1902) to provide a biogenic archive of high-resolution records of environmental and climatic changes
. J. Exp. Mar. Biol. Ecol., 393(12), 158–167.
Abstract: To determine the potential of Antarctic bivalve shells as biomonitors for environmental and climatic variations in polar marine areas, we developed a growth model for juvenile Adamussium colbecki Smith, 1902 based on the use of in situ temporal calcein markings to calibrate growth patterns in the external striae formation. To minimize scallop stress caused by excessive handling, in situ benthic chambers were used for the marking experiment, during an exposure time of 6 h. Once marked, scallops remained on site in a benthic cage and were collected 18, 26, and 41 days later. Apart from a few specimens affected by possible calcein toxicity effects, the detectable mark in all shells revealed a higher austral summer growth rate for A. colbecki compared to other Antarctic bivalves. Using calcein labeling, we identified a near 14-day periodicity in the striae formation associated with the fortnightly seawater level regime. Striae counting and increment width measurements showed an annual cycle, with no clear cessation of growth in juvenile specimens, allowing age determination. Because of the relatively high growth rate for a polar species and easily recognizable sclerochronological calendar in the shell striae formation, A. colbecki is an appropriate species for high-resolution (infra-monthly) geochemical sampling. Comparison between LA-ICP-MS analyses (Li, B, Mg, Mn, Co, Sr, Ba, Pb) from one shell and hydrological parameters (sea level, temperature, salinity) measured in seawater suggests, however, that more work is needed to calibrate the trace element proxies. Nevertheless, the shell of the Antarctic scallop A. colbecki has tremendous potential for recording environmental conditions from time periods covering months to a few years in polar waters, notably the ice melting date.
Keywords: Adamussium colbecki, Antarctic scallop, Calcein marking, Growth pattern, LA-ICP-MS,
Programme: 1090
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Spée Marion, Beaulieu Michaël, Dervaux Antoine, Chastel Olivier, Le Maho Yvon, Raclot Thierry, . (2010). Should I stay or should I go? Hormonal control of nest abandonment in a long-lived bird, the Adélie penguin.
. Hormones and behavior, 58(5), 762–8.
Abstract: According to life-history theory, long-lived birds should favor their survival over the current reproductive attempt, when breeding becomes too costly. In seabirds, incubation is often associated with spontaneous long-term fasting. Below a threshold in body reserves, hormonal and metabolic shift characteristics of a switch from lipid to protein utilization (phase III, PIII) occur. These metabolic changes are paralleled by nest abandonment and stimulation of refeeding behavior. Parental behavior is then under control of two hormones with opposite effects: corticosterone (CORT) and prolactin which stimulate foraging and incubation behavior, respectively. The aim of this study was to determine the respective role of these two hormones in nest abandonment by Adélie penguins. To this end, plasma hormone levels were measured before egg-laying and at departure from the colony (i.e. when birds were relieved by their partner or abandoned their nest), and related to nutritional state and incubation success. We found that males abandoning their nest in PIII presented high CORT levels and low prolactin levels. Interestingly, males which presented high plasma levels of prolactin in PIII did not abandon. We show that although CORT is the first hormone to be affected by prolonged energy constraints, the combined effects of high CORT and low prolactin levels are necessary for parents to favor self-maintenance and abandon the nest. We provide insights into time-course changes of the endocrine profile as PIII proceeds and report that reaching proteolytic late fasting is not sufficient to induce nest abandonment in a long-lived bird.
Keywords: Animal Migration, Animal Migration: physiology, Animals, Body Weight, Body Weight: physiology, Courtship, Fasting, Fasting: blood, Fasting: metabolism, Fasting: physiology, Female, Hormones, Hormones: blood, Hormones: metabolism, Hormones: physiology, Male, Maternal Behavior, Maternal Behavior: physiology, Nesting Behavior, Nesting Behavior: physiology, Oviparity, Oviparity: physiology, Pair Bond, Paternal Behavior, Paternal Behavior: physiology, Sexual Behavior, Animal, Sexual Behavior, Animal: physiology, Spheniscidae, Spheniscidae: blood, Spheniscidae: metabolism, Spheniscidae: physiology,
Programme: 137
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Bailly S. & Dreux P. (1995). Construction de nouveaux caryotypes: l'intérêt d'une méthode statistique/Determining of new karyotypes: interest of using a statistical method. C.R. Acad. Sci. Paris, , 459–464.
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