Results 21 to 30 of about 494 (158)

Occurrence and Quantification of Antimicrobial Resistance Genes in the Gastrointestinal Microbiome of Two Wild Seabird Species With Contrasting Behaviors

Frontiers in Veterinary Science, 2021
Antimicrobial resistance genes (ARGs) are environmental pollutants and anthropization indicators. We evaluated human interference in the marine ecosystem through the ocurrence and quantification (real-time PCRs) of 21 plasmid-mediated ARGs in enema ...
Ana Carolina Ewbank, Fernando Esperón, Carlos Sacristán, Irene Sacristán, Elena Neves, Samira Costa-Silva, Marzia Antonelli, Janaina Rocha Lorenço, Cristiane K. M. Kolesnikovas, José Luiz Catão-Dias   +9 more
doaj   +1 more source

Aspergillosis in free-ranging Magellanic penguins

Medical Mycology, 2023
Abstract We evaluated the mortality due to aspergillosis in free-ranging Magellanic penguins during their migration and the reproductive season. A total of 98 carcasses of penguins were collected along 370 km of coastline in Southern Brazil, between June 2017 and October 2019, and from reproductive colonies in Patagonian Argentina, in ...
Aryse Martins Melo, Vanice Rodrigues Poester, Mariana Rodrigues Trápaga, David A Stevens, Paula Lima Canabarro, Andréa Corrado Adornes, Andrine Paiva da Silva, Sérgio Curi Estima, Esteban Frere, Raquel Sabino, Melissa Orzechowski Xavier   +10 more
openaire   +2 more sources

Female-biased stranding in Magellanic penguins [PDF]

Current Biology, 2019
Magellanic penguins (Spheniscus magellanicus) have been reported to become stranded along the coasts of northern Argentina, Uruguay and southern Brazil during the austral winter [1-3]. This location is more than a thousand kilometers distant from their northernmost breeding colony in northern Patagonia.
Yamamoto, Takashi, Yoda, Ken, Blanco, Gabriela Silvina, Quintana, Flavio Roberto   +3 more
openaire   +3 more sources

Partial migration in Magellanic penguins

Journal of Avian Biology, 2023
We studied the migration of Magellanic penguins near the southern tip of the breeding distribution, and for the first time found evidence of partial migration for this species within the same colony. Forty‐three percent of the penguins studied stayed within ~ 290 km of the colony (residents), while others went northwards as far as ...
Melina Barrionuevo, Esteban Frere
openaire   +2 more sources

Unprecedented heat mortality of Magellanic Penguins [PDF]

Ornithological Applications, 2022
AbstractExtreme weather events are becoming more frequent and severe, leading to an increase in direct, adverse thermoregulatory impacts on wildlife. Here, we document an unprecedented, single-day, heat-related mortality event of Magellanic Penguins (Spheniscus magellanicus) at Punta Tombo, Chubut Province, Argentina, one of the largest breeding ...
Katie A Holt, P Dee Boersma
openaire   +1 more source

Microplastics in Seabird Feces from Coastal Areas of Central Chile

Animals, 2023
Pollution from plastic waste thrown into the ocean affects all levels of the food chain. Marine species of birds are affected by plastic particles of different sizes, especially the mesoplastics (1 to 10 mm) found in their digestive tract, which mainly ...
Sebastian Mendez-Sanhueza, Mariett Torres, Karla Pozo, Gabriela Del Aguila, Fabián Hernandez, Camila Jacobsen, Diana Echeverry   +6 more
doaj   +1 more source

The role of demographic history and selection in shaping genetic diversity of the Galápagos penguin (Spheniscus mendiculus).

PLoS ONE, 2020
Although many studies have documented the effects of demographic bottlenecks on the genetic diversity of natural populations, there is conflicting evidence of the roles that genetic drift and selection may play in driving changes in genetic variation at ...
Gabriella Arauco-Shapiro, Katelyn I Schumacher, Dee Boersma, Juan L Bouzat   +3 more
doaj   +1 more source

Penguins of Argentina: a bibliometric analysis

El Hornero, 2020
This study analyzes the scientific literature published on penguins in Argentina between 1985 and 2019. It examines the characteristics and the temporal variation in the number of publications, the total number of authors, the percentage of ...
Javier Menéndez-Blázquez
doaj   +1 more source