9. My Travels with King Penguin

2017 ◽  
pp. 93-107
Keyword(s):  
King Penguin

scholarly journals How to measure mitochondrial function in birds using red blood cells: a case study in the king penguin and perspectives in ecology and evolution

2017 ◽  
Vol 8 (10) ◽  
pp. 1172-1182 ◽  
Author(s):  
Antoine Stier ◽  
Caroline Romestaing ◽  
Quentin Schull ◽  
Emilie Lefol ◽  
Jean‐Patrice Robin ◽  
...  
Keyword(s):  
Red Blood Cells ◽  
Mitochondrial Function ◽  
Blood Cells ◽  
King Penguin

How age and sex drive the foraging behaviour in the king penguin

2013 ◽  
Vol 160 (5) ◽  
pp. 1147-1156 ◽  
Author(s):  
Maryline Le Vaillant ◽  
Céline Le Bohec ◽  
Onésime Prud’Homme ◽  
Barbara Wienecke ◽  
Yvon Le Maho ◽  
...  
Keyword(s):  
Foraging Behaviour ◽  
King Penguin ◽  
Sex Drive ◽  
Age And Sex

scholarly journals The distribution, abundance and population trends of gentoo, rockhopper and king penguins in the Falkland Islands

Oryx ◽  
1998 ◽  
Vol 32 (3) ◽  
pp. 223-232 ◽  
Author(s):  
M. Bingham
Keyword(s):  
World Wide ◽  
Austral Summer ◽  
Population Trends ◽  
King Penguin ◽  
Falkland Islands ◽  
Terrestrial Environment ◽  
Breeding Populations ◽  
Breeding Location ◽  
Penguin Species

The Falkland Islands are a globally important breeding location for seabirds, including penguins. The total breeding populations of three of the four main penguin species present in the Falklands were censused in the austral summer of 1995/96. The results for gentoo and rockhopper penguins suggest declines of about 43 and 90 per cent, respectively, since a similar census in 1932/33. Recent monitoring studies suggest that these declines are still continuing; research to investigate causes (which is likely to reflect changes in the marine, rather than terrestrial environment) is a high priority. In contrast, king penguin populations, currently c. 400 pairs, have increased steadily, by 700 per cent since 1980/81, in line with world-wide trends for this species.

Metabolic fate of yolk fatty acids in the developing king penguin embryo

2003 ◽  
Vol 285 (4) ◽  
pp. R850-R861 ◽  
Author(s):  
René Groscolas ◽  
Françoise Fréchard ◽  
Frédéric Decrock ◽  
Brian K. Speake
Keyword(s):  
Fatty Acids ◽  
Energy Cost ◽  
High Energy ◽  
King Penguin ◽  
Metabolic Fate ◽  
Prolonged Incubation ◽  
The Face ◽  
Fat Stores ◽  
Initial Content ◽  
Structural Lipid

This study examines the metabolic fate of total and individual yolk fatty acids (FA) during the embryonic development of the king penguin, a seabird characterized by prolonged incubation (53 days) and hatching (3 days) periods, and a high n-3/n-6 polyunsaturated FA ratio in the egg. Of the ∼15 g of total FA initially present in the egg lipid, 87% was transferred to the embryo by the time of hatching, the remaining 13% being present in the internalized yolk sac of the chick. During the whole incubation, 83% of the transferred FA was oxidized for energy, with only 17% incorporated into embryo lipids. Prehatching ( days 0-49), the fat stores (triacylglycerol) accounted for 58% of the total FA incorporated into embryo lipid. During hatching ( days 49-53), 40% of the FA of the fat stores was mobilized, the mobilization of individual FA being nonselective. At hatch, 53% of the arachidonic acid (20:4n-6) of the initial yolk had been incorporated into embryo lipid compared with only 15% of the total FA and 17-24% of the various n-3 polyunsaturated FA. Similarly, only 32% of the yolk's initial content of 20:4n-6 was oxidized for energy during development compared with 72% of the total FA and 58-66% of the n-3 polyunsaturated FA. The high partitioning of yolk FA toward oxidization and the intense mobilization of fat store FA during hatching most likely reflect the high energy cost of the long incubation and hatching periods of the king penguin. The preferential partitioning of 20:4n-6 into the structural lipid of the embryo in the face of its low content in the yolk may reflect the important roles of this FA in tissue function.

Impact of predation on king penguin Aptenodytes patagonicus in Crozet Archipelago

Polar Biology ◽  
2004 ◽  
Vol 28 (4) ◽  
pp. 303-310 ◽  
Author(s):  
Sébastien Descamps ◽  
Michel Gauthier-Clerc ◽  
Céline Le Bohec ◽  
Jean-Paul Gendner ◽  
Yvon Le Maho
Keyword(s):  
King Penguin ◽  
Aptenodytes Patagonicus

scholarly journals Climate-driven range shifts of the king penguin in a fragmented ecosystem

2018 ◽  
Vol 8 (3) ◽  
pp. 245-251 ◽  
Author(s):  
Robin Cristofari ◽  
Xiaoming Liu ◽  
Francesco Bonadonna ◽  
Yves Cherel ◽  
Pierre Pistorius ◽  
...  
Keyword(s):  
King Penguin ◽  
Range Shifts
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