| Records |
| Author |
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| Title |
First Report of Nasturtium as a Natural Host of Cherry leaf roll virus on Amsterdam Island
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Type |
Journal Article |
| Year |
2010 |
Publication |
PLANT DISEASE |
Abbreviated Journal |
Plant Dis. |
| Volume |
94 |
Issue |
|
Pages |
477 |
| Keywords |
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| Abstract |
Cherry leaf roll virus (CLRV) is a well-known virus belonging to the genus Nepovirus, but unlike most members of this genus, it is not known to be transmitted by nematodes but only through seeds and pollen. Since its first description in 1955 on Prunus avium L. in England (1), CLRV has been shown to have a worldwide distribution and a wide natural host range. During a survey of plant viruses in the French sub-Antarctic islands, samples from nasturtium plants (Tropaeolum majus), an introduced plant species, showing symptoms of leaf mosaic, deformation, and veinal necrosis were collected on Amsterdam Island. Upon mechanical transmission with sap extracts, necrotic ringspot and oak-leaf symptoms typical of Nepovirus infection were observed on the leaves of inoculated Nicotiana clevelandii and N. tabacum plants. Inoculation of healthy nasturtium plants resulted in mosaic and pin-point necrosis symptoms. Electron microscopy on negatively stained sap extracts revealed the presence of icosahedral virions, 28 to ...
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| Programme |
136 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
The American Phytopathological Society |
Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0191-2917 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
2661 |
| Permanent link to this record |
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| Author |
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| Title |
Systematic revision of Nacella (Patellogastropoda: Nacellidae) based on a complete phylogeny of the genus, with the description of a new species from the southern tip of South America |
Type |
Journal |
| Year |
2019 |
Publication |
Zoological Journal of the Linnean Society |
Abbreviated Journal |
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| Volume |
186 |
Issue |
2 |
Pages |
303-336 |
| Keywords |
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| Abstract |
True limpets of the genus Nacella (Patellogastropoda: Nacellidae) include at least 11 nominal species distributed in different provinces of the Southern Ocean. Here, we present new molecular analyses and a comprehensive morphological revision of Nacella confirming the validity of all the currently recognized species, but with important amendments to the published distributions of several. We also show that specimens collected along two fjords in the Beagle Channel, southern South America, constitute a new taxon: Nacella yaghana sp. nov. The phylogenetic position of this new taxon in our molecular tree reveals that it represents an ancestral South American lineage of Nacella, markedly separated from the previously recognized and evolutionary recent Magellanic radiation. In addition, this new Nacella species was clearly distinguished from the rest of the species by morphological comparisons, including shell characteristics, radular-tooth shape and configuration, as well as by the coloration pattern of the mantle tentacles. This study provides new evidence about the evolutionary history of this important Southern Ocean, marine, near-shore benthic group and the role of the Antarctic Circumpolar Current in the biogeography of the genus. |
| Programme |
1044 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0024-4082 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7103 |
| Permanent link to this record |
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| Author |
Evgeny A. Pakhomov, Natasha Henschke, Brian P. V. Hunt, Gabriele Stowasser, Yves Cherel |
| Title |
Utility of salps as a baseline proxy for food web studies |
Type |
Journal |
| Year |
2019 |
Publication |
Journal of Plankton Research |
Abbreviated Journal |
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| Volume |
41 |
Issue |
1 |
Pages |
3-11 |
| Keywords |
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| Abstract |
Abstract. IIn recent years, pelagic tunicates (mostly salps, but potentially doliolids, appendicularians and pyrosomes as well) have been used in isotopic studies as a baseline consumer (trophic position 2) when recreating food web dynamics to overcome the challenges of using particulate organic matter (POM). While pelagic tunicates are continuous filter feeders, recent evidence has shown that they have selective feeding behaviors, and preferentially assimilate certain particles. In this review, we combine available stable isotope data for POM and pelagic tunicates and identify that trophic enrichment in 13C and 15N relative to POM is highly variable, and suggests tunicates prefer to consume smaller, heterotrophic organisms. Here we propose that it is not appropriate to consider pelagic tunicates as representative first level consumers in the classical pelagic food web in stable isotope analyses. Rather it needs acknowledgment that they are members of the microbial food web, and thus reflect an alternate food chain. |
| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0142-7873 |
ISBN |
0142-7873 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7517 |
| Permanent link to this record |
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| Author |
Degletagne Cyril, Keime Celine, Rey Benjamin, de Dinechin Marc, Forcheron Fabien, Chuchana Paul, Jouventin Pierre, Gautier Christian, Duchamp Claude, |
| Title |
Transcriptome analysis in non-model species: a new method for the analysis of heterologous hybridization on microarrays |
Type |
Journal Article |
| Year |
2010 |
Publication |
BMC Genomics |
Abbreviated Journal |
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| Volume |
11 |
Issue |
1 |
Pages |
344 |
| Keywords |
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| Abstract |
BACKGROUND:Recent developments in high-throughput methods of analyzing transcriptomic profiles are promising for many areas of biology, including ecophysiology. However, although commercial microarrays are available for most common laboratory models, transcriptome analysis in non-traditional model species still remains a challenge. Indeed, the signal resulting from heterologous hybridization is low and difficult to interpret because of the weak complementarity between probe and target sequences, especially when no microarray dedicated to a genetically close species is available.RESULTS:We show here that transcriptome analysis in a species genetically distant from laboratory models is made possible by using MAXRS, a new method of analyzing heterologous hybridization on microarrays. This method takes advantage of the design of several commercial microarrays, with different probes targeting the same transcript. To illustrate and test this method, we analyzed the transcriptome of king penguin pectoralis muscle hybridized to Affymetrix chicken microarrays, two organisms separated by an evolutionary distance of approximately 100 million years. The differential gene expression observed between different physiological situations computed by MAXRS was confirmed by real-time PCR on 10 genes out of 11 tested.CONCLUSIONS:MAXRS appears to be an appropriate method for gene expression analysis under heterologous hybridization conditions. |
| Programme |
131 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Kluwer Academic Publishers |
Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1471-2164 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
133 |
| Permanent link to this record |
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| Author |
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| Title |
Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation |
Type |
Journal |
| Year |
2019 |
Publication |
Molecular Biology and Evolution |
Abbreviated Journal |
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| Volume |
36 |
Issue |
8 |
Pages |
1671-1685 |
| Keywords |
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| Abstract |
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| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0737-4038 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7637 |
| Permanent link to this record |
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| Author |
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| Title |
Evidence of Pathogen-Induced Immunogenetic Selection across the Large Geographic Range of a Wild Seabird |
Type |
Journal |
| Year |
2020 |
Publication |
Molecular Biology and Evolution |
Abbreviated Journal |
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| Volume |
37 |
Issue |
6 |
Pages |
1708-1726 |
| Keywords |
immunogenetics, positive selection, Toll-like receptors, pathogen-mediated selection, Antarctica and Southern Ocean, Gentoo penguin |
| Abstract |
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| Programme |
137,354 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0737-4038 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7663 |
| Permanent link to this record |
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| Author |
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| Title |
Big data approaches to the spatial ecology and conservation of marine megafauna |
Type |
Journal |
| Year |
2022 |
Publication |
ICES Journal of Marine Science |
Abbreviated Journal |
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| Volume |
79 |
Issue |
4 |
Pages |
975-986 |
| Keywords |
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| Abstract |
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| Programme |
109,388,1201 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1054-3139 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8332 |
| Permanent link to this record |
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| Author |
Boulinier, T., Kada, S., Ponchon, A., Dupraz, M., Dietrich, M., Gamble, A., Bourret, V., Duriez, O., Bazire, R., Tornos, J., Tveraa, T., Chambert, T., Garnier, R. & McCoy, K.D. |
| Title |
Migration, prospecting, dispersal? What host movement matters for infectious agent circulation? |
Type |
Book Chapter |
| Year |
2016 |
Publication |
INTEGRATIVE AND COMPARATIVE BIOLOGY |
Abbreviated Journal |
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| Volume |
56 |
Issue |
2 |
Pages |
330-42 |
| Keywords |
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| Abstract |
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| Programme |
1151 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1540-7063 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
6486 |
| Permanent link to this record |
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| Author |
L. Gualtieri, E. Stutzmann, C. Juretzek, C. Hadziioannou, F. Ardhuin |
| Title |
Global scale analysis and modelling of primary microseisms |
Type |
Journal |
| Year |
2019 |
Publication |
Geophysical Journal International |
Abbreviated Journal |
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| Volume |
218 |
Issue |
1 |
Pages |
560-572 |
| Keywords |
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| Abstract |
Primary microseism is the less studied seismic background vibration of the Earth. Evidence points to sources caused by ocean gravity waves coupling with the seafloor topography. As a result, these sources should be in water depth smaller than the wavelength of ocean waves. Using a state-of-the-art ocean wave model, we carry out the first global-scale seismic modelling of the vertical-component power spectral density of primary microseisms. Our modelling allows us to infer that the observed weak seasonality of primary microseisms in the southern hemisphere corresponds to a weak local seasonality of the sources. Moreover, a systematic analysis of the source regions that mostly contribute to each station reveals that stations on both the east and west sides of the North Atlantic Ocean are sensitive to frequency-dependent source regions. At low frequency (i.e. 0.05 Hz), the dominant source regions can be located thousands of kilometres away from the stations. This observation suggests that identifying the source regions of primary microseisms at the closest coasts can be misleading. |
| Programme |
133 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0956-540X |
ISBN |
0956-540X |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7478 |
| Permanent link to this record |
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| Author |
Andrea Berbellini, Martin Schimmel, Ana MG Ferreira, Andrea Morelli |
| Title |
Constraining S-wave velocity using Rayleigh wave ellipticity from polarization analysis of seismic noise |
Type |
Journal |
| Year |
2018 |
Publication |
Geophysical Journal International |
Abbreviated Journal |
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| Volume |
216 |
Issue |
3 |
Pages |
1817-1830 |
| Keywords |
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| Abstract |
SUMMARY. We develop a new method for measuring ellipticity of Rayleigh waves from ambient noise records by degree-of-polarization (DOP) analysis. The new method, named DOP-E, shows a good capability to retrieve accurate ellipticity curves separated from incoherent noise. In order to validate the method we perform synthetic tests simulating noise in a 1-D earth model. We also perform measurements on real data from Antarctica and Northern Italy. Observed curves show a good fit with measurements from earthquake records and with theoretical ellipticity curves. The inversion of real data measurements for vS structure shows a good agreement with previous models. In particular, the shear-wave structure beneath Concordia station shows no evidence of a significant layer of liquid water at the base of the ice. The new method can be used to measure ellipticity at high frequency and therefore it will allow the imaging of near-surface structure, and possibly of temporal changes in subsurface properties. It promises to be useful to study near-surface processes in a wide range of geological settings, such as volcanoes, fault zones and glaciers. |
| Programme |
133 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0956-540X |
ISBN |
0956-540X |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7442 |
| Permanent link to this record |
