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Insights into the genetic diversity of the leopard seal (Hydrurga leptonyx), inferred from mitochondrial DNA analysis, at Danco Coast, Antarctic Peninsula Boletín de Investigaciones
Hernández-Ardila,Laura Valentina; Barragán-Barrera,Dalia C.; Negrete,Javier; Poljak,Sebastián; Riet-Sapriza,Federico G.; Caballero,Susana.
ABSTRACT The leopard seal (Hydrurga leptonyx) is a genetically low-studied species. In order to conduct the first genetic diversity assessment of this species in Danco Coast (Antarctic Peninsula), 423 bp of the mitochondrial DNA Control Region (mtDNA-CR) was sequenced from 13 blood samples collected in Primavera Base (62º15’S, 58º39’W) during the 2011-2012 austral summer. Our results showed high haplotype diversity (h = 0.99), with various divergent haplotypes. Our findings suggest that leopard seals in the Danco Coast could represent different phylogroups; however, including more genetic markers are needed to confirm this hypothesis.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seal; Pinnipeds; MtDNA; Control Region; Antarctica..
Ano: 2021 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000300227
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Oswaldella vervoorti spec. nov. (Cnidaria: Hydrozoa), a new benthic hydroid from the South Shetland Islands, Antarctica Naturalis
Peña Cantero, A.L.; Garcia Carrascosa, A.M..
Oswaldella vervoorti spec. nov., a new antarctic hydroid is described and depicted. The differences and similarities with allied species in the genus, known only from the antarctic region, are discussed.
Tipo: Article / Letter to the editor Palavras-chave: Cnidaria; Hydrozoa; Hydroids; Kirchenpaueriidae; Oswaldella; New species; Antarctica.; 42.72.
Ano: 1998 URL: http://www.repository.naturalis.nl/record/317637
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Taxonomic assessment and antimicrobial screening of isolated bacteria from marine and terrestrial Antarctic samples. Repositório Alice
SILVA, T. R.; DUARTE, A. W. F.; PASSARINI, M. R. Z.; RUIZ, A. L. T. G.; FRANCO, C. H.; MORAES, C. B.; FANTINATTI-GARBOGGINI, F.; MELO, I. S. de; RODRIGUES, R. A.; OLIVEIRA, V. M..
Microorganisms dominate most of Antarctic ecosystem and play a crucial role in its functioning. They are called extremophilic microorganisms with unique and versatile metabolic properties with possible biotechnological applications in several areas. The aim of the present study was to taxonomically characterize psychrophilic microorganisms from Antarctic continent samples and to screen them for antimicrobial effects. Phylogenetic analysis revealed that most isolates shared 98?100 % sequence similarity to recognized species, including those recovered previously from the Antarctica environment, which belong to the major phyla Firmicutes, Bacteroidetes, Actinobacteria and Proteobacteria (classes Alpha and Gammaproteobacteria). A total of 361 bacteria strains,...
Tipo: Separatas Palavras-chave: Antimicrobial activity; Antiproliferative effect; 16S rRNA genes; Bacterial taxonomy.; Antarctica..
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103537
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