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| Author | Gerday C., Aittaleb M., Bentahir M., Chessa J.P., Claverie P., Collins T., D'amico Sdumont Jgarsoux Ggeorlette D. & Hoyoux A. | ||||
| Title | Cold-adapted Enzymes: from Fundamentals to Biotechnology. | Type | Journal Article | ||
| Year | 2000 | Publication  |
TIBTECH | Abbreviated Journal | |
| Volume | 18 | Issue | Pages | 103-107 | |
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| Programme | 165 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 1988 | |||
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| Author | Fort, J., Grémillet, D., Helgason, H.H., Albert, C., Amélineau, F., Anker-Nilssen, T., Angelier, F., Bråthen, V.S., Bringsvor, I.S., Carlsen, T.H., Chastel, O., Cherenkov, A., Christensen-Dalsgaard, S., Danielsen, J., Daunt, F., Descamps, S., Dietz, R., Elliott, K., Erikstad, K.E., Eulaers, I., Ezhov, A., Fauchald, P., Fifield, D., Frederiksen, M., Gabrielsen, G.W., Gavrilo, M., Gilchrist, G., Gilg, O., Giraudeau, M., Gíslason, S., Golubova, E., Hallgrimsson, G.T., Hansen, E.S., S.A., H., Hatch, S., Helberg, M., Huffeldt, N.P., Jónsson, J.E., Kitaysky, A., Kolbeinsson, Y., Krasnov, Y., Langset, M., Latty, C., Leclaire, S., Lorentsen, S.H., Lorentzen, E., Love, O., Mallory, M., Merkel, B., Merkel, F., Moe, B., Montevecchi, W.A., Mosbech, A., Newell, M., Olsen, B., Orben, R., Parkinson, K., Patterson, A., Pratte, I., Provencher, J., Ragnarsdottir, S.B., Reiertsen, T.K., Renner, H., Robertson, G.J., Rojek, N., M, R., Sagerup, K., Semashko, V., Sepp, T., Sonne, C., Systad, G.H., Takahashi, A., Tarroux, A., Tertitski, G., Thompson, P., Tolmacheva, E., Will, A., Wojczulanis-Jakubas, K., Tórarinsson, T.L., Bustamante, P. & Strøm, H. | ||||
| Title | Mercury contamination of Arctic seabirds : spatio-temporal trends and impacts | Type | Peer-reviewed symposium | ||
| Year | 2020 | Publication |
Third world seabird conference, Hobart, Australia, October 19-23, 2020 | Abbreviated Journal | |
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| Programme | 1036 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 8451 | |||
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| Author | Ancel A., Beaulieu M., Le Maho Y. & Gilbert C. | ||||
| Title | Within and between pair huddling synchronization in emperor penguins. | Type | Conference - International - Communication | ||
| Year | 2008 | Publication |
Third International Bio-logging Science Symposium | Abbreviated Journal | |
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| Abstract | “Third International Bio-logging Science Symposium”, Pacific Grove (Californie, USA), 1-5 septembre. | ||||
| Programme | 137 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 5110 | |||
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| Author | Beaulieu M., Le Maho Y. & Ancel A. | ||||
| Title | Adélie penguin offspring take the rap for their instrumented parents. | Type | Conference - International - Communication | ||
| Year | 2008 | Publication |
Third International Bio-logging Science Symposium | Abbreviated Journal | |
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| Abstract | “Third International Bio-logging Science Symposium”, Pacific Grove (Californie, USA), 1-5 septembre. | ||||
| Programme | 137 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 5111 | |||
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| Author | Ancel A., Anckenmann L., Arnold L., Baumann R., Beaulieu M., Brucker M., Charles L., Chatelain N., Claus G., Georges J.-Y., Handrich Y., Imhoff M., Laesser R., Médina P., Parisel C., Pellicioli M., Richer M. & Wabnitz C. | ||||
| Title | Smaller tricks that last longer: new logger development for long-term deployment at the IPHC-CNRS, Strasbourg France. | Type | Conference - International - Article without Reading Comitee | ||
| Year | 2008 | Publication |
Third International Bio-logging Science Symposium | Abbreviated Journal | |
| Volume | Issue | Pages | |||
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| Abstract | “Third International Bio-logging Science Symposium”, Pacific Grove (Californie, USA), 1-5 septembre. | ||||
| Programme | 137 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 5112 | |||
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| Author | Gamble, A. | ||||
| Title | Ecology of infectious agent circulation in seabirds: inference using serological approaches | Type | Thesis | ||
| Year | 2018 | Publication |
Thèse univesité de montpellier | Abbreviated Journal | |
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| Abstract | Despite Their Increasingly Recognized Interest For Public Health And Biodiversity Conservation, Investigations On The Ecology And Evolution Of Infectious Diseases In Wildlife Have Been Hampered By The Difficulty Of Collecting Data Allowing Efficient Inference Of Underlying Processes. Serology (I.e., Detection Of Antibodies In Biological Samples) Is A Useful Tool To Detect Past Exposure To Specific Infectious Agents. Still, Interpreting Serological Data Is Not Straightforward. For Instance, The Prevalence Of Seropositive Individuals In A Population Is Driven By A Combination Of Epidemiological (E.g., Disease Incidence) And Demographic (E.g., Population Turnover) Dynamics. In This Context, The Objective Of This Thesis Is To Show How Processes Underlying Infectious Agent Circulation In Wild Populations Can Be Inferred From Serological Data. First, I Illustrate How Cross-sectional Studies Focusing On A Sentinel Species At The Wildlife-human Interface Can Efficiently Inform On Patterns At A Hierarchy Of Scales. Then, I Compare The Pros And Cons Of Such Crosssectional Approaches To Longitudinal Sampling Designs Involving Marked Individuals When Attempting To Quantify The Dynamics Of Infectious Agents And I Propose A Way To Integrate Those Two Approaches In Future Studies. Finally, Using Avian Cholera Epizootics In A Threatened Long-lived Seabird On An Isolated Island As A Case Study, I Illustrate The Benefits Of Combining Serology With Other Approaches. This Work Notably Highlights The Value Of Detailed Long-term Studies Of Host Exposure To Infectious Agents In The Wild, Where Ecological And Evolutionary Processes Are Likely Critical Drivers Of Disease Dynamics And Can Have Important Implications For Biodiversity Conservation. | ||||
| Programme | 333,1151 | ||||
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| Corporate Author | Thesis | Bachelor's thesis | |||
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| Notes | Approved | yes | |||
| Call Number | Serial | 7360 | |||
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| Author | Agnès Lewden | ||||
| Title | Stratégies de thermorégulation liées aux contraintes physiologiques et environnementales chez le manchot royal (Aptenodytes patagonicus) | Type | Thesis | ||
| Year | 2017 | Publication |
Thèse soutenue le 20 octobre 2017, strasbourg university | Abbreviated Journal | |
| Volume | 203 pp | Issue | Pages | ||
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| Abstract | The energetic cost of foraging activities in King Penguin (Aptenodytes patagonicus) consists to reach favourable areas, realizes depth diving to attempt fish patch and resting in high latitude cold water. Several studies have shown that resting in cold water could be represent a more expensive cost than realized depth diving. Indeed, this paradox is probably linked with contrasting thermoregulation processes. During daylight, a general hypothermia occurs and is believed to reduce energy expenditure. At sunrise occurs a re-warming to normothermia, contributing to increase heat-loss during the night. We hypothesise an energetic conflict between thermoregulation and digestive processes. During daylight, the organism may be unable to assimilate the end product of prey digestion (free fatty acids) inside the peripheral subcutaneous adipose tissues (SAT), because skin is no more blood perfused. During the night, re-warming and re-connecting to blood circulation peripheral tissues could be inevitable to end the assimilation of FFA inside the SAT. In a first step, we have reproduced the conditions of a resting night at sea and events of rewarming skin temperature, using a sea water tank in which king penguins equipped with internal temperature loggers were maintained several days. In a second step, we have tested a generalisation of our hypothesis studying body temperature variations on penguins fast and feed. Finally, we have measured the cost to maintain normothermia in cold water with respirometry measures and investigated peripheral vasodilation with body temperature variations and infrared thermography. Key words: Thermoregulation – Normothermia – Seabirds – Vasodilation – Energetic |
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| Programme | 394 | ||||
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| Corporate Author | Thesis | Ph.D. thesis | |||
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| Notes | Approved | yes | |||
| Call Number | Serial | 7344 | |||
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| Author | Orgeret, F. | ||||
| Title | Ontogenèse de la recherche alimentaire durant la phase juvénile : cas des prédateurs plongeurs | Type | Thesis | ||
| Year | 2018 | Publication |
Thèse soutenue le 14 juin 2018, université de la rochelle | Abbreviated Journal | |
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| Abstract | La période juvénile d’espèces longévives demeure peu connue malgré son importance pour la démographie et la conservation des populations. L’objectif de cette thèse a été d’étudier le comportement de dispersion et de nourrissage de 52 juvéniles de trois espèces de prédateurs marins plongeurs des Terres Australes et Antarctiques Françaises (les manchots royaux, les manchots empereurs et les éléphants de mer du Sud) pendant quasiment 1 an après leur indépendance. L’approche a été basée sur l’utilisation de balises retransmettant en direct la localisation et des données de plongée. Les juvéniles de ces trois espèces présentèrent des dispersions sur de très grandes distances dans l’Océan Austral, avec au départ des composantes d‘orientation semblant en partie innées. Le rôle des courants océaniques et des zones frontales est apparu important. Les juvéniles montrèrent aussi une ségrégation spatiale prononcée avec les adultes. Les juvéniles présentèrent d‘impressionnantes capacités de plongée seulement quelques jours après leur départ. Cependant, si leurs capacités de plongée et d‘acquisition de nourriture augmentèrent progressivement avec le temps, elles n‘atteignirent jamais totalement les capacités des adultes. Certains juvéniles ne parvinrent pas à augmenter ces capacités alors que leur environnement devint moins favorable et apparemment décédèrent en mer, vraisemblablement par inanition. La première année en mer apparait alors comme une phase critique puisqu'une mortalité apparente fut observée pour chaque espèce. Cette thèse apporte des éléments de compréhension nouveaux sur l’ontogenèse de la dispersion et de la recherche alimentaire des prédateurs marins plongeurs. | ||||
| Programme | 394 | ||||
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| Corporate Author | Thesis | Ph.D. thesis | |||
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| Notes | Approved | yes | |||
| Call Number | Serial | 7532 | |||
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| Author | Monternier PA | ||||
| Title | Flexibilité mitochondrial au cours du jeûne. Etude chez le caneton de barbarie et le poussin de manchot royal | Type | Thesis | ||
| Year | 2015 | Publication |
Thèse de science. université claude bernard lyon 1 | Abbreviated Journal | |
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| Abstract | Throughout their life, wild species face periods of food-deprivation that induce energy trade-offs between survival, growth and reproduction. These fasting periods occur either when food availability is lacking due to adverse climatic conditions or because individuals are engaged in biological processes that prevent food access. This later reason is particularly well illustrated in the king penguin (Aptenodytes patagonicus), a sea bird that has to moult and reproduce on shore whereas he feed exclusively at sea. Moreover king penguin chicks exhibit exceptional survival capacities during their first year of life when they experience a long period of fast in winter. Thus, this species that lives in sub-Antarctic latitudes, is exposed to environmental and physiological energy constraints during food shortage periods. Since king penguins are endotherms, they need to maintain their body temperature at high level despite variations of ambient temperature. Thus thermoregulation is one of the most expensive process and skeletal muscles account for the greater part of heat production in birds. Several studies showed that despite long term cold exposure, energy expenditure of fasting birds decreases allowing energy savings and especially protein sparing. Since skeletal muscles have high implications in energy expenditure and heat production the question of their implication in energy saving mechanisms arises. During my PhD project I studied skeletal muscle metabolism through mitochondrial efficiency. These sub-cellular organelles are the last effectors of energy transduction from nutrient into ATP, an usable energy for cells. Our hypothesis is based on the flexibility of mitochondrial efficiency as a regulator of energy sparing mechanisms which would explain long term resistance to starvation. My studies were conducted in a wild species, the king penguin chicks, that are naturally acclimated to cold environment and experienced long term fasting stage. To further investigate mitochondrial plasticity in response to energy constraints, I developed several experimental procedures in controlled conditions on a laboratory model (Muscovy ducklings). The flexibility of mitochondrial efficiency observed in these two avian species suggests that this mechanism could highly decrease the cost of energy production during food-deprivation period even when birds were exposed to cold. Although, mitochondrial efficiency improvement was found in both species, it seems to depend on the phenotype and/or activity of skeletal muscles. |
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| Programme | 131 | ||||
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| Notes | Approved | yes | |||
| Call Number | Serial | 7228 | |||
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| Author | Charlène Guillaumot | ||||
| Title | Modelling the response of Antarctic marine species to environmental changes. Methods, applications and limitations. /// Modéliser la réponse des espèces marines antarctiques aux changements environnementaux. Méthodes, applications et limites. | Type | Thesis | ||
| Year | 2021 | Publication |
Thèse de doctorat. université libre de bruxelles / université de bourgogne franche-comté | Abbreviated Journal | |
| Volume | Issue | Pages | 620 pp. | ||
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| Abstract | Parmi les outils qui permettent de mieux comprendre les systèmes naturels, la modélisation écologique a connu un essor particulièrement important depuis une vingtaine d’années. Les modèles écologiques, représentation simplifiée d’une réalité complexe, permettent de mettre en avant les facteurs environnementaux qui déterminent la niche écologique des espèces et de mieux comprendre leur réponse aux changements de l’environnement. Dans le cas des faunes marines antarctiques, la modélisation écologique fait face à plusieurs défis méthodologiques. Les jeux de données de présence des espèces sont très souvent agrégés dans le temps et dans l’espace, à proximité des stations de recherche. Ces données sont souvent trop peu nombreuses pour caractériser l’espace environnemental occupé par les espèces ainsi que leur physiologie. Enfin, les jeux de données environnementales manquent encore de précision pour finement représenter la complexité des habitats marins. Dans ces conditions, est-il possible de générer des modèles performants et justes à l’échelle de l’océan Austral ? Quelles sont les approches possibles et leurs limites ? Comment améliorer les méthodes afin de générer de meilleurs modèles ? Au cours de ce travail de thèse, trois types de modèles ont été étudiés et leurs performances évaluées. (1) Les modèles physiologiques de type DEB (Dynamic Energy Budget) simulent la manière dont l’environnement abiotique influe sur le métabolisme des individus et proposent une représentation de la niche fondamentale des espèces. (2) Les modèles de distribution d’espèces (SDMs pour Species Distribution Models) prédisent la probabilité de distribution des espèces en étudiant la relation spatiale entre données de présence et environnement. Ils proposent une représentation de la niche réalisée des espèces. Enfin (3), les modèles de dispersion de type lagrangien prédisent le mouvement de propagules dans les masses d’eau. Les résultats montrent que les modèles physiologiques réussissent à simuler les variations métaboliques des espèces antarctiques en fonction de l’environnement et à prédire les dynamiques de populations. Cependant, davantage de données sont nécessaires pour pouvoir caractériser finement les différences physiologiques entre populations et évaluer correctement les modèles. Les résultats obtenus pour les SDMs montrent que les modèles générés à l’échelle de l’océan Austral et leurs prédictions futures ne sont pas fiables du fait du manque de données disponibles pour caractériser l’espace occupé par les espèces, du manque de précision des scénarios climatiques futurs et de l’impossibilité d’évaluer les modèles. De plus, les modèles extrapolent sur une très grande proportion de l’espace projeté. L’apport d’information complémentaire sur les limites physiologiques des espèces (observations, résultats d’expériences, sorties de modèles physiologiques) permet de réduire l’extrapolation et d’augmenter la capacité des modèles à décrire la niche réalisée des espèces. L’agrégation spatiale des données, qui influençait les prédictions et l’évaluation des modèles a également pu être corrigée. Enfin, les modèles de dispersion ont montré un potentiel intéressant pour révéler le rôle des barrières géographiques ou à l’inverse, la connectivité spatiale, mais également le lien existant entre distribution, physiologie et histoire phylogénétique des espèces. Ce travail de thèse propose de nombreux conseils et fournit des codes annotés parfois sous forme de tutoriels, afin de constituer une aide utile aux futurs travaux de modélisation sur les espèces marines antarctiques. | ||||
| Programme | 688,1044 | ||||
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| Corporate Author | Thesis | Bachelor's thesis | |||
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| Notes | Approved | yes | |||
| Call Number | Serial | 6439 | |||
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