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Bergerat F. & Angelier J. (2000). The south Iceland seismic Zone: tectonic and sismotectonic analyses revealing the evolution from rifting to transform motion. Journal of geodynamics, 29, 211–231.
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Engrand C., Deloule E., Robert F., Maurette M. & Kurat G. (1999). Extraterrestrial water in micrometeorites cosmic spherules from Antartica: An ion microprobe study. Meteorit Planet Sci, 34, 773–786.
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Nolan Paul M, Stephen Dobson F, Nicolaus Marion, Karels Tim J, McGraw Kevin J, Jouventin Pierre, . (2010). Mutual Mate Choice for Colorful Traits in King Penguins
. Ethology, 116(7), 635–644.
Abstract: Abstract While studies of mate choice based on male color pattern are ubiquitous, studies of mate choice based on ornamental color traits in sexually monomorphic species are less common. We conducted manipulative field experiments on two color ornaments of king penguins (Aptenodytes patagonicus), the size of auricular patches of orange feathers and degree of UV reflectance from beak spots, to determine how the degree of ornamentation influenced pairing rate. In a reduction of auricular patch size, females paired significantly more quickly than males in both control and experimental samples. When this bias was taken into account statistically, pairing of individuals with reduced auricular patches was significantly delayed. We also reduced, but did not eliminate, UV reflectance from beak spots by applying a UV filter; no sex difference in pairing rate was evident in this experiment. Treated birds paired significantly more slowly than untreated control individuals, taking more than a week longer to pair on average than their unmanipulated counterparts, a result that was significant for males and approached significance for females. Our results may indicate mutual mate choice via UV reflectance of the beak spot. Given that this is a species where breeding is extremely slow and considerable investment by both males and females is required for successful reproduction, our results support the hypothesis that in such species, sexual selection might act on the same ornament in both sexes.
Programme: 354
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Engrand C., Deloule E., Hoppe P., Kurat G., Maurette M. & Robert F. (1996). Water contents of COPS-rich cosmic spherules from Antarctica. Meteoritics, 31, 43.
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D'amico S., Gerdray C. & Feller G. (2000). Structural similarities and evolutionary relationships in chloride-dependent a-amylases. Gene, 253, 95–105.
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Wendler G., Andre J.C., Pettre P., Gosink J. & Parish T. (1993). Antarctic research series, , 23–46.
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Bernard S.F., Mioskowski E. & Groscolas R. (2002). Blockade of fatty acid oxidation mimics phase II-phase III transition in a fasting bird, the king penguin. Am. J. Physiol. Regul. Integr. Comp. Physiol., 283, 144–152.
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Godin S., Guirlet M., David C. & Greskiewiecz R. (1995). Climatological Study of Stratospheric Ozone at Northern Mid-Latitude and Southern Polar Latitude..
Abstract: IU66, Boulder
Programme: 209
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. (2001). Effects of weather on activity and sleep in brooding king penguins (Aptenodytes patagonicus). Polar Biol., 24, 508–511.
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Cherel Yves, Fontaine Camille, Richard Pierre, Labat Jean-Philippe, . (2010). Isotopic niches and trophic levels of myctophid fishes and their predators in the Southern Ocean
. Limnol. Oceanogr., 55(1), 324–332.
Abstract: We report the trophic structure of a myctophid assemblage by measuring the isotopic niches of 14 species living in Kerguelen waters, southern Indian Ocean. Most of the species show distinct isotopic niches that differ by at least one of the two niche axes (d13C habitat and d15N trophic position), indicating trophic partitioning within the assemblage. Strong niche segregation occurs within each of the three most common genera of myctophids (Electrona, Gymnoscopelus, and Protomyctophum), illustrating the different mechanisms (habitat and dietary segregation) that allow coexistence of closely related species. Calculated trophic levels (TLs) of myctophids ranged from 3.3 to 4.2, showing that they are secondary and tertiary consumers in the pelagic ecosystem. The positive relationship between TL and standard length of fish points out a structuring effect of size, with larger species (Gymnoscopelus spp.) occupying a higher trophic position than smaller species (Krefftichthys anderssoni and Protomyctophum spp.). Myctophids occupy an intermediate trophic position between macrozooplanktonic crustaceans and seabirds and marine mammals within the pelagic ecosystem. However, the TLs of large myctophids overlap those of crustacean-eating seabirds e.g., Eudyptes spp. (crested penguins) and Pachyptila belcheri. The isotopic niche of myctophids indicates that Aptenodytes patagonicus (king penguin) adults prey upon K. anderssoni when they feed for themselves, thus exemplifying the usefulness of isotopic datasets on potential prey of predators to depict trophic relationships.
Programme: 109
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