RESUMO
Health diagnostics of wildlife have historically relied on the evaluation of select serum biomarkers and the identification of a contaminant or pathogen burden within specific tissues as an indicator of a level of insult. However, these approaches fail to measure the physiological reaction of the individual to stressors, thus limiting the scope of interpretation. Gene-based health diagnostics provide an opportunity for an alternate, whole-system, or holistic assessment of health, not only in individuals or populations but potentially in ecosystems. Seabirds are among the most threatened marine taxonomic groups in the world, with ~25% of this species currently listed as threatened or considered of special concern; among seabirds, the penguins (Family Spheniscidae) are the most threatened seabird Family. We used gene expression to develop baseline physiological indices for wild penguins in the Falkland-Malvinas Islands, and captive zoo penguins. We identified the almost complete statistical separation of penguin groups (gentoo Detroit Zoo, gentoo Falkland-Malvinas Islands, rockhopper Detroit Zoo, and rockhopper Falkland-Malvinas Islands) based on gene expression profiles. Implementation of long-term longitudinal studies would allow for the assessment of temporal increases or decreases of select transcripts and would facilitate interpretation of the drivers of change.
RESUMO
Copepods are present in numerous aquatic environments, playing key roles in food webs, and are thought to be useful indicators of environmental change. Boeckella is a calanoid copepod genus distributed mainly in the Southern Hemisphere, with 14 species reported at higher southern latitudes in South America and Antarctica. We present an updated database of these 14 species of Boeckella generated from a combination of three sources: 1) new field sampling data, 2) published records, and 3) Global Biodiversity Information Facility (GBIF), to provide a comprehensive description of the geographic distribution of the genus south of latitude 40°S in southern South America and the three main terrestrial biogeographic regions of Antarctica. The database includes 380 records, 62 from field sampling, 278 from the literature and 40 from GBIF. Southern South America, including the Falkland/Malvinas Islands, had the highest species richness and number of records (14 and 297, respectively), followed by the sub-Antarctic islands (5 and 34), South Orkney Islands (2 and 14), South Shetland Islands (1 and 23), Antarctic Peninsula (1 and 10) and finally continental Antarctica (1 and 2). Boeckellapoppei Mrázek, 1901 is the only representative of the genus, and more widely the only terrestrial/freshwater invertebrate, currently reported from all three main biogeographic regions in Antarctica (sub-Antarctic islands, maritime and continental Antarctic). Future development of molecular systematic studies in this group should contribute to assessing the correspondence between morphological taxonomy and molecular evolutionary radiation.
RESUMO
The aim of this paper is to account for the modalities in which Malvinas veterans' health was constituted as a problem requiring state intervention between 1984 and 2000. In order to do so, we have focused on the concept of problematization as a way to analyze practices and political thought. The text consists of three sections: the first one presents the methodological basis of the analysis of public policies, whereas the second and third ones intend to analyze a series of laws, bills, decrees, reports and other documents produced by different state spheres about war veterans and their health situation. The hypothesis that we propose is that the Malvinas veterans were problematized as a marginal segment of the population, although the stabilization of a specific treatment took more than fifteen years to materialize.
El objetivo de este artículo es dar cuenta de las modalidades en que fue instituida la salud del veterano argentino de la guerra de Malvinas como un problema de intervención estatal entre 1984 y 2000. Para ello nos centramos en el concepto de problematización como un modo de análisis de las prácticas y el pensamiento político. El texto consta de tres apartados: en el primero se presentan las bases metodológicas para el análisis de las políticas públicas, mientras que el segundo y el tercero están destinados al análisis de una serie de leyes, proyectos de ley, decretos, informes, etc., producidos por diferentes esferas estatales en torno al veterano de guerra y su situación sanitaria. La hipótesis de lectura que proponemos es que el veterano o excombatiente de Malvinas fue problematizado como un segmento poblacional marginal, aunque la estabilización de un tratamiento específico tardó más de quince años en materializarse.
Assuntos
Conflitos Armados , Política Pública , Governo Estadual , Serviços de Saúde para Veteranos Militares/legislação & jurisprudência , Saúde dos Veteranos/legislação & jurisprudência , Argentina , Conflitos Armados/história , Ilhas Malvinas , História do Século XX , Humanos , Política , Problemas Sociais/legislação & jurisprudênciaRESUMO
RESUMEN El objetivo de este artículo es dar cuenta de las modalidades en que fue instituida la salud del veterano argentino de la guerra de Malvinas como un problema de intervención estatal entre 1984 y 2000. Para ello nos centramos en el concepto de problematización como un modo de análisis de las prácticas y el pensamiento político. El texto consta de tres apartados: en el primero se presentan las bases metodológicas para el análisis de las políticas públicas, mientras que el segundo y el tercero están destinados al análisis de una serie de leyes, proyectos de ley, decretos, informes, etc., producidos por diferentes esferas estatales en torno al veterano de guerra y su situación sanitaria. La hipótesis de lectura que proponemos es que el veterano o excombatiente de Malvinas fue problematizado como un segmento poblacional marginal, aunque la estabilización de un tratamiento específico tardó más de quince años en materializarse.
ABSTRACT The aim of this paper is to account for the modalities in which Malvinas veterans' health was constituted as a problem requiring state intervention between 1984 and 2000. In order to do so, we have focused on the concept of problematization as a way to analyze practices and political thought. The text consists of three sections: the first one presents the methodological basis of the analysis of public policies, whereas the second and third ones intend to analyze a series of laws, bills, decrees, reports and other documents produced by different state spheres about war veterans and their health situation. The hypothesis that we propose is that the Malvinas veterans were problematized as a marginal segment of the population, although the stabilization of a specific treatment took more than fifteen years to materialize
Assuntos
Humanos , História do Século XX , Política Pública , Governo Estadual , Conflitos Armados/história , Saúde dos Veteranos/legislação & jurisprudência , Serviços de Saúde para Veteranos Militares/legislação & jurisprudência , Argentina , Política , Problemas Sociais/legislação & jurisprudência , Ilhas MalvinasRESUMO
BACKGROUND: In seabirds, the extent of population genetic and phylogeographic structure varies extensively among species. Genetic structure is lacking in some species, but present in others despite the absence of obvious physical barriers (landmarks), suggesting that other mechanisms restrict gene flow. It has been proposed that the extent of genetic structure in seabirds is best explained by relative overlap in non-breeding distributions of birds from different populations. We used results from the analysis of microsatellite DNA variation and geolocation (tracking) data to test this hypothesis. We studied three small (130-200 g), very abundant, zooplanktivorous petrels (Procellariiformes, Aves), each sampled at two breeding populations that were widely separated (Atlantic and Indian Ocean sectors of the Southern Ocean) but differed in the degree of overlap in non-breeding distributions; the wintering areas of the two Antarctic prion (Pachyptila desolata) populations are separated by over 5000 km, whereas those of the blue petrels (Halobaena caerulea) and thin-billed prions (P. belcheri) show considerable overlap. Therefore, we expected the breeding populations of blue petrels and thin-billed prions to show high connectivity despite their geographical distance, and those of Antarctic prions to be genetically differentiated. RESULTS: Microsatellite (at 18 loci) and cytochrome b sequence data suggested a lack of genetic structure in all three species. We thus found no relationship between genetic and spatial structure (relative overlap in non-breeding distributions) in these pelagic seabirds. CONCLUSIONS: In line with other Southern Ocean taxa, geographic distance did not lead to genetic differences between widely spaced populations of Southern Ocean petrel species.