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23 results on '"Toro, Frederick"'

1. FISH PREY OF THE PERUVIAN TERN STERNULA LORATA ALONG THE NORTHERN COAST OF CHILE.

Author

VILINA, YERKO A., PASTENES, LUIS, MUNIZAGA, BEATRIZ, TORO, FREDERICK, NEIRA-SOTO, ÁLVARO, and MOLINA-BURGOS, BLANCA E.

Subjects
FORAGE fishes, COLONIAL birds, SIZE of fishes, TERNS, HABITATS, CEPHALOPODA
Abstract

Copyright of Marine Ornithology is the property of Pacific Seabird Group - Marine Ornithology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024

5. Composition and structure of the skin microbiota of rorquals off the Eastern South Pacific

Author

Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Educación (Chile), Toro, Frederick [0000-0002-5121-9155], Capella, Juan [0000-0003-3879-9826], Bahamonde, Paulina [0000-0002-8880-8463], Esperón, Fernando [0000-0002-8810-5071], Moreno-Switt, Andrea [0000-0001-8231-9397], Castro-Nallar, Eduardo [0000-0003-4384-8661], Toro, Frederick, Alarcón, Jaime, Márquez, Sebastián, Capella, Juan, Bahamonde, Paulina, Esperón, Fernando, Moreno-Switt, Andrea, Castro-Nallar, Eduardo, Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Educación (Chile), Toro, Frederick [0000-0002-5121-9155], Capella, Juan [0000-0003-3879-9826], Bahamonde, Paulina [0000-0002-8880-8463], Esperón, Fernando [0000-0002-8810-5071], Moreno-Switt, Andrea [0000-0001-8231-9397], Castro-Nallar, Eduardo [0000-0003-4384-8661], Toro, Frederick, Alarcón, Jaime, Márquez, Sebastián, Capella, Juan, Bahamonde, Paulina, Esperón, Fernando, Moreno-Switt, Andrea, and Castro-Nallar, Eduardo

Abstract

Recent advances in high-throughput sequencing have enabled the large-scale interrogation of microbiota in the most diverse environments, including host-associated microbiota. This has led to the recognition that the skin microbiota of rorquals is specific and structurally different from that of the ocean. This study reveals the skin microbiome of 85 wild individuals along the Chilean coast belonging to Megaptera novaeangliae, Balaenoptera musculus and Balaenoptera physalus. Alpha diversity analysis revealed significant differences in richness and phylogenetic diversity, particularly among humpback whales from different locations and between blue and humpback whales. Beta diversity was partially explained by host and location but only accounting for up to 17% of microbiota variability (adjusted VPA). Overall, we found that microbiota composition was dominated by bacterial genera such as Cardiobacter, Moraxella, Tenacibaculum, Stenotrophomonas, Flavobacteria and Pseudomonas. We also found that no ASVs were associated with the three rorqual species. Up to four ASVs were specific of a location, indicating a great variability in the microbiota. To the best of our knowledge, this is the first report on the composition and structure of the skin microbiota of whales off the coast of Chile, providing a foundational dataset to understand the microbiota's role in rorquals.

Published
2021

11. Spatial and Temporal Effects of Whale Watching on a Tourism-Naive Resident Population of Bottlenose Dolphins (Tursiops truncatus) in the Humboldt Penguin National Reserve, Chile

Author

Toro, Frederick, primary, Alarcón, Jaime, additional, Toro-Barros, Bárbara, additional, Mallea, Gabriela, additional, Capella, Juan, additional, Umaran-Young, Clara, additional, Abarca, Paulette, additional, Lakestani, Nelly, additional, Peña, Claudia, additional, Alvarado-Rybak, Mario, additional, Cruz, Franco, additional, Vilina, Yerko, additional, and Gibbons, Jorge, additional

Published
2021
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13. First Genetic Record of a Strap-Toothed Beaked Whale (Mesoplodon layardii) Stranding in Chile

Author

Español-Jiménez, Sonia, primary, Abaud, Constanza, additional, Aceituno, Camila, additional, Alvarado-Rybak, Mario, additional, Borroni, Cintya, additional, Chiang, Gustavo, additional, Díaz, Javier, additional, Espejo, Winfred, additional, Estay, María Luisa, additional, García-Cegarra, Ana M., additional, González, Carlos, additional, Gutierrez, Belén, additional, Gutierrez, Josefina, additional, Henríquez, Daniel, additional, Hirmas, Andrea, additional, Mejías, Pamela, additional, Meriño, Constanza, additional, Molina, Charity, additional, Naretto, Camilo, additional, Olivares, Florencia, additional, Pereira, Patricia, additional, Peñaloza, Diego, additional, Pincheira, Betsy, additional, Pinto, Nicolás, additional, Rojas, Omar, additional, Sánchez, Carolina, additional, Toro, Barbara, additional, Toro, Frederick, additional, and Undurraga, Raimundo, additional

Published
2020
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15. EVALUACIÓN DEL IMPACTO DE LA CONTAMINACIÓN LUMÍNICA SOBRE LAS AVES MARINAS EN CHILE: DIAGNÓSTICO Y PROPUESTAS

Author

Silva, Rodrigo, primary, Medrano, Fernando, additional, Tejeda, Ivo, additional, Terán, Daniel, additional, Peredo, Ronny, additional, Barros, Rodrigo, additional, Colodro, Valentina, additional, González, Paola, additional, González, Verónica, additional, Guerra-Correa, Carlos, additional, Hodum, Peter, additional, Keitt, Brad, additional, Luna-Jorquera, Guillermo, additional, Malinarich, Vinko, additional, Mallea, Gabriela, additional, Manríquez, Pablo, additional, Nevins, Hannah, additional, Olmedo, Bárbara, additional, Páez-Godoy, Jorge, additional, De Rodt, Guillermo, additional, Rojas, Flora, additional, Sanhueza, Pedro, additional, Suazo, Cristián G., additional, Toro, Frederick, additional, and Toro-Barros, Bárbara, additional

Published
2020
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16. MOESM1 of Distributional ecology of Andes hantavirus: a macroecological approach

Author

Astorga, Francisca, Escobar, Luis, Poo-MuĂąoz, Daniela, Joaquin Escobar-Dodero, Rojas-Hucks, Sylvia, Alvarado-Rybak, Mario, Duclos, Melanie, Romero-Alvarez, Daniel, Molina-Burgos, Blanca, PeĂąafiel-Ricaurte, Alexandra, Toro, Frederick, PeĂąa-GĂłmez, Francisco, and A. Peterson

Abstract

Additional file 1. References and sources used to collect geographic coordinates of rodent hosts, seropositive rodents and human HPS cases.

Published
2018
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17. A Mass Stranding Event of Long-Finned Pilot Whales (Globicephala melas) in Southern Chile

Author

Alvarado-Rybak, Mario, primary, Haro, Daniela, additional, Oyarzún, Pablo A., additional, Dougnac, Catherine, additional, Gutierrez, Josefina, additional, Toledo, Natalia, additional, Leiva, Nicolás, additional, Peña, Claudia, additional, Cifuentes, Constanza, additional, Muñoz, Nicolás, additional, Montti, Elisa, additional, Casado, Daniel, additional, Toro, Frederick, additional, Soto-Azat, Claudio, additional, and Pincheira, Betsy, additional

Published
2019
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19. Distributional ecology of Andes hantavirus: a macroecological approach

Author

Fish and Wildlife Conservation, Astorga, Francisca, Escobar, Luis E., Poo-Muñoz, Daniela A., Escobar-Dodero, Joaquin, Rojas-Hucks, Sylvia, Alvarado-Rybak, Mario, Duclos, Melanie, Romero-Alvarez, Daniel, Molina-Burgos, Blanca E., Peñafiel-Ricaurte, Alexandra, Toro, Frederick, Peña-Gómez, Francisco T., Peterson, A. Townsend, Fish and Wildlife Conservation, Astorga, Francisca, Escobar, Luis E., Poo-Muñoz, Daniela A., Escobar-Dodero, Joaquin, Rojas-Hucks, Sylvia, Alvarado-Rybak, Mario, Duclos, Melanie, Romero-Alvarez, Daniel, Molina-Burgos, Blanca E., Peñafiel-Ricaurte, Alexandra, Toro, Frederick, Peña-Gómez, Francisco T., and Peterson, A. Townsend

Abstract

Background: Hantavirus pulmonary syndrome (HPS) is an infection endemic in Chile and Argentina, caused by Andes hantavirus (ANDV). The rodent Oligoryzomys longicaudatus is suggested as the main reservoir, although several other species of Sigmodontinae are known hosts of ANDV. Here, we explore potential ANDV transmission risk to humans in southern South America, based on eco-epidemiological associations among: six rodent host species, seropositive rodents, and human HPS cases. Methods: We used ecological niche modeling and macroecological approaches to determine potential geographic distributions and assess environmental similarity among rodents and human HPS cases. Results: Highest numbers of rodent species (five) were in Chile between 35° and 41°S latitude. Background similarity tests showed niche similarity in 14 of the 56 possible comparisons: similarity between human HPS cases and the background of all species and seropositive rodents was supported (except for Abrothrix sanborni). Of interest among the results is the likely role of O. longicaudatus, Loxodontomys micropus, Abrothrix olivaceus, and Abrothrix longipilis in HPS transmission to humans. Conclusions: Our results support a role of rodent species’ distributions as a risk factor for human HPS at coarse scales, and suggest that the role of the main reservoir (O. longicaudatus) may be supported by the broader rodent host community in some areas.

Published
2018

23. Composition and structure of the skin microbiota of rorquals off the Eastern South Pacific

Author

Andrea I. Moreno-Switt, Sebastián Márquez, Fernando Esperón, Jaime Alarcón, Eduardo Castro-Nallar, Frederick Toro, Paulina Bahamonde, Juan Capella, Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Educación (Chile), Toro, Frederick, Capella, Juan, Bahamonde, Paulina, Esperón, Fernando, Moreno-Switt, Andrea, and Castro-Nallar, Eduardo

Subjects
Pacific ocean, Beta diversity, Zoology, Skin microbiota, Applied Microbiology and Biotechnology, Microbiology, Animals, Microbiome, Chile, Phylogeny, Amplicon sequencing, Humpback Whale, Balaenoptera musculus, Ecology, Balaenoptera, biology, Amplicon sequence variants, Microbiota, Bacterial composition, pacific ocean, rorquals, skin microbiota, biology.organism_classification, Phylogenetic diversity, bacterial composition, Alpha diversity, Species richness, Rorquals, Rorqual
Abstract

10 Pág. Centro de Investigación en Sanidad Animal (CISA), Recent advances in high-throughput sequencing have enabled the large-scale interrogation of microbiota in the most diverse environments, including host-associated microbiota. This has led to the recognition that the skin microbiota of rorquals is specific and structurally different from that of the ocean. This study reveals the skin microbiome of 85 wild individuals along the Chilean coast belonging to Megaptera novaeangliae, Balaenoptera musculus and Balaenoptera physalus. Alpha diversity analysis revealed significant differences in richness and phylogenetic diversity, particularly among humpback whales from different locations and between blue and humpback whales. Beta diversity was partially explained by host and location but only accounting for up to 17% of microbiota variability (adjusted VPA). Overall, we found that microbiota composition was dominated by bacterial genera such as Cardiobacter, Moraxella, Tenacibaculum, Stenotrophomonas, Flavobacteria and Pseudomonas. We also found that no ASVs were associated with the three rorqual species. Up to four ASVs were specific of a location, indicating a great variability in the microbiota. To the best of our knowledge, this is the first report on the composition and structure of the skin microbiota of whales off the coast of Chile, providing a foundational dataset to understand the microbiota's role in rorquals., This work was funded by ‘ANID-FONDECYT Regular 1200834’ and by ‘ANID-PIA-Anillo INACH ACT192057’.

Published
2021

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