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| Fernández,Araceli; Paz Villanueva,María; González,Mario; Fernández,Fabiola; Latif,Fadua; Flores,Sandra Nonier; Fernández,Heriberto. |
| Edwarsiella tarda is a zoonotic bacterium that can be isolated from humans, animals and the environment. Although E. tarda is primarily considered a fish pathogen, it is the only species of its genus considered to be pathogenic for humans as well. A survey of zoonotic intestinal bacteria in fresh feces from South American sea lions (SASL) Otaria flavescens, reported E. tarda as the most frequently isolated species. In this study, we used HEp-2 cells to establish in vitro the adherence and invasive ability of 17 E. tarda strains isolated from SASL fecal material. All the strains were able to adhere and invade HEp-2 cells with adhesion and invasion percentages ranging from 56 to 100% and 21 to 74%, respectively. Despite the expression of these pathogenic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Edwarsiella tarda; Adherence; Invasion; Otaria flavescens. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300044 |
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| SEPÚLVEDA,MARITZA; OLIVA,DORIS; URRA,ALEJANDRA; PÉREZ-ÁLVAREZ,MARÍA J; MORAGA,RODRIGO; SCHRADER,DANIEL; INOSTROZA,PATRICIA; MELO,ANGELA; DÍAZ,HUMBERTO; SIELFELD,WALTER. |
| The onshore distribution and abundance of the South American sea lion Otaria flavescens along the central Chilean coast was estimated during the period January-February 2007. Additionally, changes in population abundance during the period 1970-2007 were examined. Population surveys were based on photographs taken from boats or aircraft. A total of 16301 sea lions (CI = 16209-16375) were counted in 33 colonies (6 breeding and 27 non-breeding sites). After correction to account for the proportion of individuals at sea and for pups not seen at the time of the survey, the mean estimated abundance was 18179 (95 % CI = 17777-18851) sea lions. Population trend analysis showed that from 1970 to 1985, South American sea lions showed a positive increase of... |
| Tipo: Journal article |
Palavras-chave: Census; Chilean coast; Otaria flavescens; Overexploitation; Sea lions. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000100007 |
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| Artico,L.O.; Bianchini,A.; Grubel,K.S.; Monteiro,D.S.; Estima,S.C.; de Oliveira,L.R.; Bonatto,S.L.; Marins,L.F.. |
| The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande), both in Southern Brazil. In this region, the species is continuously under the effect of anthropic activities, mainly those related to environmental contamination with organic and inorganic chemicals and fishery interactions. This paper reports, for the first time, the genetic diversity of O. flavescens found along the Southern Brazilian coast. A 287-bp fragment of the mitochondrial DNA control region (D-loop) was analyzed. Seven... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Otaria flavescens; MtDNA; D-loop; Genetic variability; New haplotypes. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000900002 |
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| Loch,Carolina; Simões-Lopes,Paulo C.; Drehmer,César J.. |
| Cases of dental agenesis, supernumerary teeth and dental losses are presented in three species of South American Otariids: Arctocephalus australis (Zimmermann, 1783), A. tropicalis (Gray, 1872) and Otaria flavescens (Shaw, 1800). For the first time, congenital and acquired dental anomalies were comparatively diagnosed in skull samples from southern Brazil and nearby areas. The skulls and mandibles were accessed in the scientific collection of mammals of the Federal University of Santa Catarina, southern Brazil. Agenesis was found only among maxillary post-canine teeth, especially the distal ones (PC/6), due to an evolutionary trend towards reduction of the number of post-canine teeth in this family. Maxillary and mandibular supernumerary teeth were found... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arctocephalus australis; A. tropicalis; Dental agenesis; Otaria flavescens; Southern Brazil; Supernumerary teeth. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300023 |
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