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| GUERRERO,CLAUDIA J; POULIN,ELIE; MÉNDEZ,MARCO A; VILA,IRMA. |
| Los peces muestran una amplia diversidad de comportamientos alimentarios, algunas veces asociados con morfologías específicas, las cuales pueden reflejar adaptaciones para usar los recursos dependiendo de su hábitat. En los sistemas acuáticos aislados, los peces son un buen modelo de estudio para entender las relaciones tróficas. Este estudió evaluó la dieta de cinco especies de Orestias, las cuales habitan ocho sitios diferentes en la Región de Arica y Parinacota, Parque Nacional Lauca. Se analizaron 177 estómagos pertenecientes a las especies Orestias chungarensis, O. laucaensis, O. parinacotensis, O. piacotensis y Orestias cf agassii. Para los análisis se utilizaron descriptores cuantitativos de número de items presa y frecuencia de ocurrencia. Se... |
| Tipo: Journal article |
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| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382015000100004 |
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| ROTHHAMMER,FRANCISCO; SANTORO,CALOGERO M; POULIN,ELIE; ARRIAZA,BERNARDO T; MORAGA,MAURICIO; STANDEN,VIVIEN J. |
| The influence of tropical lowland migrations on the emergence of cultural change in the Central Andes has been postulated in general terms since the beginning of last century (Tello 1929). Archeological and molecular genetic evidence, particularly agriculture of tropical cultigens and ancient mtDNA haplogroup typing in northern Chile, suggest a chronologically more precise relationship between both regions. We test in this article the hypothesis that the process of cultural transformation of prehistoric populations living on the coast and the desert valleys of northern Chile can be partially linked to gene flow from the eastern slopes of the Andes and/or from the tropical lowlands during the Late Archaic / Formative periods (ca. 3,500-2,000 B.P.). |
| Tipo: Journal article |
Palavras-chave: Ancient mtDNA; Central Andes; Cultural change; Tropical lowland migration. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000400008 |
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| VÉLIZ,DAVID; CATALÁN,LAURA; PARDO,RODRIGO; ACUÑA,PATRICIO; DÍAZ,ANGIE; POULIN,ELIE; VILA,IRMA. |
| There is still doubt as to the number of species of the freshwater Chilean ichthyofauna, 64 % of which have conservation problems. One of the groups is that of the silversides of the genus Basilichthys. Three morphological species of this genus have been described in Chile with disjoint distributions: Basilichthys semotilus, B. microlepidotus and B. australis; the latter two overlap in distribution only in the Aconcagua River and are not easily distinguishable by morphological and meristic characters. In order to evaluate the efficacy of identification of these species by molecular techniques, we analyzed the sequence of 9 % of the mitochondrial DNA (Control Region and COI) of individuals from the Loa River (21°41' S) to the Valdivia River (39°50' S),... |
| Tipo: Journal article |
Palavras-chave: COI; Control Region; Drainages; MtDNA; Silverside fish. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000100004 |
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| MARÍN,JUAN C; ZAPATA,BEATRIZ; GONZÁLEZ,BENITO A; BONACIC,CRISTIAN; WHEELER,JANE C; CASEY,CIARA; BRUFORD,MICHAEL W; PALMA,R. EDUARDO; POULIN,ELIE; ALLIENDE,M. ANGÉLICA; SPOTORNO,ÁNGEL E. |
| Existen cuatro especies de camélidos sudamericanos, dos de ellos silvestres, guanaco (Lama guanicoe) y vicuña (Vicugna vicugna), y dos formas domésticas, alpaca (Lama pacos) y llama (Lama glama), cuyo origen ha sido objeto de debate. En el presente estudio la variación en el patrón de bandas G de los cromosomas de llamas y alpacas y la secuencia de dos genes mitocondriales han sido usados para estudiar el origen y la clasificación de llamas y alpacas. Patrones de bandas cromosómicas similares fueron observados en las cuatro especies de Lamini, incluso similares a los descritos para camello, Camelus bactrianus. Sin embargo, se encontraron finas y consistentes diferencias en los brazos cortos del cromosoma 1, permitiendo separar a camellos, guanacos y... |
| Tipo: Journal article |
Palavras-chave: Camelidae; Lama pacos; Vicugna pacos; Lama glama; Cromosomas; Citocromo b; D-loop. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000200001 |
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| GONZÁLEZ-WEVAR,CLAUDIO ALEJANDRO; DÍAZ,ANGIE; GERARD,KARIN; CAÑETE,JUAN IVÁN; POULIN,ELIE. |
| Diversity, abundance and composition of taxonomic groups in the Southern Ocean differ from elsewhere in the planet, since the biogeography in this region reflects the complex interactions of tectonics, oceanography, climate and biological elements since the Eocene. Several groups of marine benthic organisms exhibit high levels of genetic divergence among provinces in this region, supporting the existence of a vicariance process through plate tectonics, while other groups with high dispersive capacity exhibit recent divergence processes. Moreover, the discovery of non-Antarctic decapod larvae in Antarctic Peninsula suggests that some groups can travel across the Antarctic Circumpolar Current. Here we analyzed levels of genetic divergence in congeneric... |
| Tipo: Journal article |
Palavras-chave: Antarctic Circumpolar Current; COI; Oceanographic barrier; Planktotrophy; Pliocene separation. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400007 |
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| DÍAZ,ANGIE; GONZÁLEZ-WEVAR,CLAUDIO ALEJANDRO; MATURANA,CLAUDIA S; PALMA,ALVARO T; POULIN,ELIE; GERARD,KARIN. |
| The glacial cycles of the Pleistocene have promoted the principal climatic changes of the Southern Ocean, and motivated scientific interest regarding the strategies developed by marine benthic invertebrates to tolerate and overcome the extension and contraction of the ice sheet on the Antarctic continental platform. A recent study of the bathymetric zonation and distribution of macro-invertebrates in a shallow subtidal area of Fildes Bay (King George Island, South Shetlands Islands, Antarctica) highlighted the presence of a large aggregation of the brooding sea urchin Abatus agassizii, whose geographic distribution is known only for localities south of the Antarctic convergence (Antarctic Peninsula and South Shetland and South Georgia Islands in the Scotia... |
| Tipo: Journal article |
Palavras-chave: Antarctic benthic fauna; COI phylogenetic relationships; King George Island; Southern Ocean; Survivor population. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400008 |
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