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Antecedentes preliminares sobre cultivo vegetativo de Ahnfeltia plicata (Hudson) Fries, 1836 en canales subantárticos magallánicos del sur de Chile

The agarophyte Ahnfeltia plicata is considered a high commercial potential macroalgae market phycocolloids, because it has a neutral agarose without sulfate groups, this opens the need for more information on its cultivation. However, aspects about biomass growth have not been evaluated in Chile, being necessary for a potential culture. The aim of this study was to evaluate the...

DISTRIBUTION AND BIOMASS OF RUPPIA FILIFOLIA (PHIL.) SKOTTSBERG, (RUPPIACEAE) IN SKYRING SOUND, SUB-ANTARCTIC ECOREGION OF MAGALLANES, CHILE

Ruppia filifolia is the seagrass with the world’s southernmost distribution and a species about which even the most fundamental aspects of its biology and ecology are not known. Presence, bathymetric distribution, and biomass of R. filifolia meadows in Skyring sound (sub-antarctic ecoregion of Magallanes, Chile) were evaluated through a remotely operated vehicle (ROV) survey, and...

EFECTO DE AUXINAS Y CITOQUININAS EN EL CULTIVO DE TEJIDO DE AHNFELTIA PLICATA (HUDSON) FRIES, 1836 (AHNFELTIALES, RHODOPHYTA) DE LA REGIÓN DE MAGALLANES

Ahnfeltia plicata (Hudson) Fries, 1836, is a commercially important agar producer which occurs in the Magallanes region, characterized by an heteromorphic life-cycle. Several in vitro growth techniques have been used for the micropropagation of different genotypes of macroalgae. Nevertheless, there are no records of work undertaken with A. plicata. The objective of this research...

Diferencias morfométricas de dos especies del género Eatoniella en Isla Navarino, Reserva de Biosfera Cabo de Hornos, Chile

The external morphometrics of shell and radula morphology were performed in two species of micromollusks of the genus Eatoniella in Navarino Island, Chile. A total of 50 specimens of E. picea and 72 of E. nigra were analyzed. These species have similar morphology, but E. picea has a smaller diameter/length ratio (0.53 ± 0.02) than E. nigra (0.61 ± 0.04). In relation to the radula...

Genetics, Gene Flow, and Glaciation: The Case of the South American Limpet Nacella mytilina

Glacial episodes of the Quaternary, and particularly the Last Glacial Maximum (LGM) drastically altered the distribution of the Southern-Hemisphere biota, principally at higher latitudes. The irregular coastline of Patagonia expanding for more than 84.000 km constitutes a remarkable area to evaluate the effect of Quaternary landscape and seascape shifts over the demography of...

Towards a model of postglacial biogeography in shallow marine species along the Patagonian Province: lessons from the limpet Nacella magellanica (Gmelin, 1791)

Background Patagonia extends for more than 84,000 km of irregular coasts is an area especially apt to evaluate how historic and contemporary processes influence the distribution and connectivity of shallow marine benthic organisms. The true limpet Nacella magellanica has a wide distribution in this province and represents a suitable model to infer the Quaternary glacial legacy on...

Prevalencia de patología ano-rectal en pacientes portadores de VIH/SIDA

Muñoz C., Juan Andrés Mansilla E., Claudia Heider C., M. José Leal W. y Carolina Chain A. Universidad de La Frontera. Temuco, Chile. Departamento de Cirugía (CMC, JAME, CHC, MJLW). Hospital Doctor

Podding of juvenile king crabs Lithodes santolla (Molina, 1782) (Crustacea) in association with holdfasts of Macrocystis pyrifera (Linnaeus) C. Agardh, 1980

Underwater photographic records and sampling were carried out in Steamer Bay, Strait of Magellan, Chile, to study the spatial distribution patterns of juvenile king crabs Lithodes santolla during late winter and early spring in 2006. Observations were made on the relationship between these crabs and the holdfasts and stipes of the large kelp Macrocystis pyrifera. Dense...

Tratamiento quirúrgico de condilomas perianales en pacientes VIH positivos

treatment of anogenital warts in hiv positive patients   Drs. ALEJANDRO BARRERA E.1, JUAN ANDRÉS MANSILLA E.1, GUILLERMO BANNURA C.1, PAULINA PEÑALOZA M.2, JEANNETTE DABANCH P.2, CLAUDIO ZÚÑIGA T.2