Eduardo Pavez Galvez - Academia.edu (original) (raw)

Papers by Eduardo Pavez Galvez

Research paper thumbnail of Virus serological diagnosis in two Avian species based on binding of human C1q to Avian antibody

Avian Pathology, 1996

Diagnosis of infectious diseases in birds using direct assays such as conventional ELISA or immun... more Diagnosis of infectious diseases in birds using direct assays such as conventional ELISA or immunofluorescence require antibody directed to IgG of each avian species. In this study, we tested binding of human C1q to different antigen-antibody complexes of two avian species in a sandwich immunofluorescent complement fixation test (S-ICFT). The reaction was as follows: virus (in cells) + decomplemented avian serum + human-C1q + goat anti-human-C1q + fluorescein isothiocyanate rabbit anti-goat-IgG. Positive and negative chicken (order Galliformes) sera against chicken anaemia virus (CAV) and sera against avian pox virus as well as positive and negative sera against chicken pox virus raised in a milvago chimango (order Falconiformes) were used. Positive sera of either avian species demonstrated clear fluorescent staining of infected cells while negative sera did not show any reaction. This demonstrated that both chicken and milvago chimango antibodies were able to bind human C1q. Since both avian species tested belonged to different orders, we believe that antibodies of other avian species will also bind human Clq allowing serological surveys in feral birds through S-ICFT.

Research paper thumbnail of Nesting of the White-throated Hawk (Buteo albigula) in deciduous forests of central Chile

PROVINCE OF BRITISH COLUMBIA. 2001. Inventory Methods for Raptors. Standards for Components of Br... more PROVINCE OF BRITISH COLUMBIA. 2001. Inventory Methods for Raptors. Standards for Components of British Columbia's Biodiversity No. 11. Ministry of Sustainable Resource Management Environment Inventory Branch for the Terrestrial Ecosystems Task Force Resources Inventory Committee. Victoria, BC Canada. SHERRY, T.W. AND R.T. HOLMES. 1995. Summer versus winter limitation of populations: what are the issues, what is the evidence. Pages 85-120 in T.E. Martin and D.M. Finch [EDS.], Ecology and management of neotropical migratory birds: a synthesis and review of the critical issues. Oxford Univ. Press, Oxford, U.K.

Research paper thumbnail of Causes of Admission to a Rehabilitation Center for Andean Condors ( Vultur gryphus ) in Chile

Journal of Raptor Research, 2016

BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access t... more BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Research paper thumbnail of (Geranoaetus melanoleucus) FROM NATIVE PREY TO EUROPEAN RABBITS IN CHILE

For two years we studied the feeding ecology of Black-chested Eagles (Geranoaetus rnelanoleu- cus... more For two years we studied the feeding ecology of Black-chested Eagles (Geranoaetus rnelanoleu- cus) in San Carlos de Apoquindo, central Chile. We estimated the diet of eagles using three different methods and evaluated the abundance of introduced European Rabbits (Oryctolagus cuniculus) throughout one year. Eagles preyed in decreasing order of frequency on mammals, reptiles, insects and birds. The biomass component

Research paper thumbnail of Habitat Selection by Torrent Ducks ( Merganetta armata armata ) in Central Chile: Conservation Implications of Hydropower Production

Waterbirds, 2013

The Torrent Duck (Merganetta armata) inhabits the torrential rivers of the Andean mountains. As p... more The Torrent Duck (Merganetta armata) inhabits the torrential rivers of the Andean mountains. As part of a long-term study, two rivers important for hydroelectric production were surveyed in Central Chile. Monthly indices of Torrent Duck abundance and reproduction were recorded at 74 sampling points distributed along 35.4 km of river between 2007 and 2009. Habitat variables were measured to determine the factors that influence species abundance. The number of rapids, gradient, total flow, water velocity, relative position to hydropower intakes and abundance of conspecifics were identified as important attributes in Torrent Duck habitat preferences. Torrent Ducks were observed in selected sections of rivers where the presence of rapids, high slopes and high water velocity occurred. These conditions were influenced by the width and shape of the river bed. Spatial segregation among individuals suggests the effect of territoriality. Torrent Ducks tended to avoid the presence of high vehicular traffic roads and sections downstream of the hydropower intakes. The hydropower intakes showed no impact on either the chemistry of the water or the composition of the macroinvertebrate community. The negative effects of hydroelectric power production on Torrent Duck populations could be mitigated through the modification of the shape of the river channel.

Research paper thumbnail of Virus serological diagnosis in two Avian species based on binding of human C1q to Avian antibody

Avian Pathology, 1996

Diagnosis of infectious diseases in birds using direct assays such as conventional ELISA or immun... more Diagnosis of infectious diseases in birds using direct assays such as conventional ELISA or immunofluorescence require antibody directed to IgG of each avian species. In this study, we tested binding of human C1q to different antigen-antibody complexes of two avian species in a sandwich immunofluorescent complement fixation test (S-ICFT). The reaction was as follows: virus (in cells) + decomplemented avian serum + human-C1q + goat anti-human-C1q + fluorescein isothiocyanate rabbit anti-goat-IgG. Positive and negative chicken (order Galliformes) sera against chicken anaemia virus (CAV) and sera against avian pox virus as well as positive and negative sera against chicken pox virus raised in a milvago chimango (order Falconiformes) were used. Positive sera of either avian species demonstrated clear fluorescent staining of infected cells while negative sera did not show any reaction. This demonstrated that both chicken and milvago chimango antibodies were able to bind human C1q. Since both avian species tested belonged to different orders, we believe that antibodies of other avian species will also bind human Clq allowing serological surveys in feral birds through S-ICFT.

Research paper thumbnail of Nesting of the White-throated Hawk (Buteo albigula) in deciduous forests of central Chile

PROVINCE OF BRITISH COLUMBIA. 2001. Inventory Methods for Raptors. Standards for Components of Br... more PROVINCE OF BRITISH COLUMBIA. 2001. Inventory Methods for Raptors. Standards for Components of British Columbia's Biodiversity No. 11. Ministry of Sustainable Resource Management Environment Inventory Branch for the Terrestrial Ecosystems Task Force Resources Inventory Committee. Victoria, BC Canada. SHERRY, T.W. AND R.T. HOLMES. 1995. Summer versus winter limitation of populations: what are the issues, what is the evidence. Pages 85-120 in T.E. Martin and D.M. Finch [EDS.], Ecology and management of neotropical migratory birds: a synthesis and review of the critical issues. Oxford Univ. Press, Oxford, U.K.

Research paper thumbnail of Causes of Admission to a Rehabilitation Center for Andean Condors ( Vultur gryphus ) in Chile

Journal of Raptor Research, 2016

BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access t... more BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Research paper thumbnail of (Geranoaetus melanoleucus) FROM NATIVE PREY TO EUROPEAN RABBITS IN CHILE

For two years we studied the feeding ecology of Black-chested Eagles (Geranoaetus rnelanoleu- cus... more For two years we studied the feeding ecology of Black-chested Eagles (Geranoaetus rnelanoleu- cus) in San Carlos de Apoquindo, central Chile. We estimated the diet of eagles using three different methods and evaluated the abundance of introduced European Rabbits (Oryctolagus cuniculus) throughout one year. Eagles preyed in decreasing order of frequency on mammals, reptiles, insects and birds. The biomass component

Research paper thumbnail of Habitat Selection by Torrent Ducks ( Merganetta armata armata ) in Central Chile: Conservation Implications of Hydropower Production

Waterbirds, 2013

The Torrent Duck (Merganetta armata) inhabits the torrential rivers of the Andean mountains. As p... more The Torrent Duck (Merganetta armata) inhabits the torrential rivers of the Andean mountains. As part of a long-term study, two rivers important for hydroelectric production were surveyed in Central Chile. Monthly indices of Torrent Duck abundance and reproduction were recorded at 74 sampling points distributed along 35.4 km of river between 2007 and 2009. Habitat variables were measured to determine the factors that influence species abundance. The number of rapids, gradient, total flow, water velocity, relative position to hydropower intakes and abundance of conspecifics were identified as important attributes in Torrent Duck habitat preferences. Torrent Ducks were observed in selected sections of rivers where the presence of rapids, high slopes and high water velocity occurred. These conditions were influenced by the width and shape of the river bed. Spatial segregation among individuals suggests the effect of territoriality. Torrent Ducks tended to avoid the presence of high vehicular traffic roads and sections downstream of the hydropower intakes. The hydropower intakes showed no impact on either the chemistry of the water or the composition of the macroinvertebrate community. The negative effects of hydroelectric power production on Torrent Duck populations could be mitigated through the modification of the shape of the river channel.