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Title |
Molecular response of a sub-antarctic population of the blue mussel (Mytilus edulis platensis) to a moderate thermal stress |
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2021 |
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Marine Environmental Research |
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169 |
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105393 |
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2DE Abiotic stress Biomonitoring Gills Indicator species Kerguelen island Mytilus sp. qRT-PCR Temperature |
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409 |
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0141-1136 |
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yes |
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8256 |
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Author |
Pamela E. Michael, Chris Wilcox, Christophe Barbraud, Karine Delord, Michael Sumner, Henri Weimerskirch |
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Title |
Dynamic enforcement of bycatch via reproductive value can increase theoretical efficiency |
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Year |
2021 |
Publication |
Marine Policy |
Abbreviated Journal |
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Volume |
132 |
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104684 |
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Keywords |
Albatross Bycatch Dynamic enforcement Dynamic ocean management Monitoring Reproductive value |
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Abstract |
Managing marine systems is challenging, as many marine species are highly mobile. Albatross exemplify this paradigm, overlapping multiple threats at sea, including bycatch. The typical characterization of bycatch, the number of individuals, ignores the long-term, population-wide repercussions of bycatch. Including an estimate of the reproductive value (RV, the loss of future reproductive contributions, given bycatch) is a complementary tool, incorporating the population-wide repercussions of bycatch. While bycatch management via dynamic spatial management allows management boundaries to move, it requires monitoring and enforcement to be effective. We provide a proof of concept to optimize bycatch enforcement activities by dynamically targeting areas of concentrated future productivity characterized by RV. This paper examined a population of black-browed albatross (Thalassarche melanophris) as a case study. We calculate RV and apply it to at-sea distributions. This creates spatiotemporally explicit surfaces used to prioritize times and locations for bycatch mitigation enforcement. Dynamic enforcement has greater theoretical efficiency than static enforcement, but this difference decreases with increasing population-wide RV subject to enforcement. Though there are implementation challenges, many can be reduced with existing tools providing various opportunities. Incorporating RV when characterizing the impacts of bycatch on a population and strategically applying dynamic bycatch enforcement based on RV can be a powerful, efficient component of dynamic ocean management. |
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109 |
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0308-597X |
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0308-597X |
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yes |
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8342 |
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2021 |
Publication |
Marine pollution bulletin |
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169 |
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Pages |
112559 |
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At-sea survey Frontal system Garbage patch Plastic litter Southern Indian Ocean |
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109 |
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Bachelor's thesis |
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0025-326X |
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yes |
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7939 |
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Author |
Van Hanja J |
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Master 1 |
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2021 |
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10 pp |
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1044 |
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yes |
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8062 |
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Author |
Le Moan E |
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Master 1 |
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2021 |
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15 pp |
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1044 |
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yes |
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8069 |
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Author |
Meudec L. |
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Master 2 |
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2021 |
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Abbreviated Journal |
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50 pp |
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1044 |
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yes |
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8063 |
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Title |
Impact of socio-economic traditions on current tobacco and tea addictions (Siberia 17th to 20th century) |
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Year |
2021 |
Publication |
Medrxiv |
Abbreviated Journal |
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Objective To investigate how tobacco and tea spread among virgin populations and how the first addictions have subsequently influenced the behavior of present-day populations. Design Retrospective observational study using data from frozen burials and levels of theobromine, theophylline, caffeine, nicotine, and cotinine measured in hair samples from frozen bodies of autochthonous people. Confrontation of the results with new ethnobotanical, historical and cultural data from the past and with present day epidemiological data from the same region. Setting Eastern Siberia (Yakutia) from the contact with Europeans (17th century) to the assimilation of people into Russian society (19th century). Participants 47 frozen bodies of autochthonous people from eastern Siberia and a review of present-day populations from Yakutia Intervention Levels of theobromine, theophylline, caffeine, nicotine, and cotinine were measured in hair samples. Along with the collection of cultural data associated with the bodies, potential comorbidities were investigated. Main outcome measure We combined LC-HRMS and LC-MS/MS tools for toxicological investigations in hair and we assessed the association between xenobiotic concentrations and geography using several permutation-based methods to infer the economic circuits of tobacco and tea. Comparison of the results obtained with ethno-botanical analyses allowed to identify the products from which the metabolites were derived. Results Hair levels of theobromine, theophylline and caffeine vary with the type of beverage consumed: green, black or local herbal teas. At the beginning of our study period, a few heavy consumers of tobacco were found among light or passive consumers. Tobacco-related co-morbidities began to be recorded one century after contact with Europeans. Heavy tea users were only found from the 19th century and the heaviest users of the two substances date from this century. After the first contact, teas were widely consumed as beverages and medicines but also for shamanic reasons. Economic factors, fashion and social and family contacts seem to have played a decisive role in tobacco consumption very early on. Conclusion Epidemiological characteristics of present-day Yakutia suggest that the high prevalence of smokers and tea consumers, the prevalence of female smokers and tobacco use in the north, find their origins in the diffusion phenomena of the 18th and 19th century. Behavioral evolution governed the process of substance integration and was determinant for the continuity of use of these substances over a long period of time. |
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1038 |
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yes |
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7952 |
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Author |
Vallas B. |
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Title |
Structuration spatiale et temporelle des colonies de manchots royaux (Aptenodytes patagonicus) |
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2021 |
Publication |
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Abbreviated Journal |
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Programme |
137 |
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Approved |
yes |
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Serial |
8717 |
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Title |
Phylogenomic Resolution of Sea Spider Diversification through Integration of Multiple Data Classes |
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2021 |
Publication |
Molecular Biology and Evolution |
Abbreviated Journal |
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Volume |
38 |
Issue |
2 |
Pages |
686-701 |
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Abstract |
Despite significant advances in invertebrate phylogenomics over the past decade, the higher-level phylogeny of Pycnogonida (sea spiders) remains elusive. Due to the inaccessibility of some small-bodied lineages, few phylogenetic studies have sampled all sea spider families. Previous efforts based on a handful of genes have yielded unstable tree topologies. Here, we inferred the relationships of 89 sea spider species using targeted capture of the mitochondrial genome, 56 conserved exons, 101 ultraconserved elements, and 3 nuclear ribosomal genes. We inferred molecular divergence times by integrating morphological data for fossil species to calibrate 15 nodes in the arthropod tree of life. This integration of data classes resolved the basal topology of sea spiders with high support. The enigmatic family Austrodecidae was resolved as the sister group to the remaining Pycnogonida and the small-bodied family Rhynchothoracidae as the sister group of the robust-bodied family Pycnogonidae. Molecular divergence time estimation recovered a basal divergence of crown group sea spiders in the Ordovician. Comparison of diversification dynamics with other marine invertebrate taxa that originated in the Paleozoic suggests that sea spiders and some crustacean groups exhibit resilience to mass extinction episodes, relative to mollusk and echinoderm lineages. |
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1124 |
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1537-1719 |
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yes |
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8246 |
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Title |
Transit timings variations in the three-planet system: TOI-270 |
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2021 |
Publication |
Monthly Notices of the Royal Astronomical Society |
Abbreviated Journal |
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Volume |
510 |
Issue |
4 |
Pages |
5464-5485 |
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1066 |
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0035-8711 |
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Call Number |
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8413 |
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