Search Results - "Randall R. Jiménez"

The amphibian microbiome: natural range of variation, pathogenic dysbiosis, and role in conservation by Jiménez, Randall R., Sommer, Simone

“…Recent research in humans, livestock, and wildlife using high-throughput next-generation sequencing (NGS) has identified that resident microbiota play an…”
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Habitat disturbance influences the skin microbiome of a rediscovered neotropical-montane frog by Jiménez, Randall R, Alvarado, Gilbert, Sandoval, José, Sommer, Simone

“…The skin microbiome serves as a first line defense against pathogens in vertebrates. In amphibians, it has the potential to protect against the chytrid fungus…”
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Inhibitory Bacterial Diversity and Mucosome Function Differentiate Susceptibility of Appalachian Salamanders to Chytrid Fungal Infection by Jiménez, Randall R, Carfagno, Amy, Linhoff, Luke, Gratwicke, Brian, Woodhams, Douglas C, Chafran, Liana Soares, Bletz, Molly C, Bishop, Barney, Muletz-Wolz, Carly R

“…Mucosal defenses are crucial in animals for protection against pathogens and predators. Host defense peptides (antimicrobial peptides, AMPs) as well as…”
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Moving Beyond the Host: Unraveling the Skin Microbiome of Endangered Costa Rican Amphibians by Jiménez, Randall R, Alvarado, Gilbert, Estrella, Josimar, Sommer, Simone

“…Some neotropical amphibians, including a few species in Costa Rica, were presumed to be "extinct" after dramatic population declines in the late 1980s but have…”
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Effects of the insecticide β-endosulfan on tadpoles of Isthmohyla pseudopuma (Anura: Hylidae) by Méndez-Rivera, Michael, Mena, Freylan, Pinnock-Branford, Margaret, Ruepert, Clemens, Barquero, Marco D., Jiménez, Randall R., Alvarado, Gilbert

“…Conventional agriculture uses pesticides intensively. Once pesticides are released into the environment, they can be toxic to non-target organisms. Exposure of…”
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Mamey sapote fruit and carotenoid formulations derived thereof are dietary sources of vitamin A – A comparative randomized cross-over study by Chacón-Ordóñez, Tania, Esquivel, Patricia, Quesada, Silvia, Jiménez, Randall R., Cordero, Aracelly, Carle, Reinhold, Schweiggert, Ralf

“…Mamey sapote is a fruit rich in specific keto-carotenoids, namely sapotexanthin and cryptocapsin. Their chemical structure suggests their provitamin A…”
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Behavioral plasticity mitigates risk across environments and predators during anuran metamorphosis by Touchon, Justin C., Jiménez, Randall R., Abinette, Shane H., Vonesh, James R., Warkentin, Karen M.

“…Most animals metamorphose, changing morphology, physiology, behavior and ecological interactions. Size- and habitat-dependent mortality risk is thought to…”
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Salmonella Isolates in the Introduced Asian House Gecko (Hemidactylus frenatus) with Emphasis on Salmonella Weltevreden, in Two Regions in Costa Rica by Jiménez, Randall R, Barquero-Calvo, Elías, Abarca, Juan G, Porras, Laura P

“…The Asian house gecko Hemidactylus frenatus has been widely introduced in Costa Rica and tends to establish in human settlements. Some studies in other invaded…”
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Immunological and physiological responses to predation risk and sublethal concentrations of chlorothalonil and β-endosulfan in Lithobates taylori (Anura: Ranidae) tadpoles by Ballestero, Erick, Bolaños, Federico, Ruepert, Clemens, Jiménez, Randall R., Bonilla, Fabian, Sasa, Mahmood

“…•Sublethal concentrations of β-endosulfan reduced tadpoles weight, neutrophil and lymphocyte count, while CORT levels increased.•Tadpoles exposed to…”
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The relationship between perch type and aggressive behavior in the lizard Norops polylepis (Squamata: Dactyloidae) by Jiménez, Randall R., Rodríguez-Rodríguez, Jorengeth Abad

“…The intensity of aggression against intruders by owners of a territory has been related to the type of resources available to an individual within its…”
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Phylosymbiosis shapes skin bacterial communities and pathogen-protective function in Appalachian salamanders by Osborne, Owen G, Jiménez, Randall R, Byrne, Allison Q, Gratwicke, Brian, Ellison, Amy, Muletz-Wolz, Carly R

“…Phylosymbiosis is an association between host-associated microbiome composition and host phylogeny. This pattern can arise via the evolution of host traits,…”
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Selección de presas por perros callejeros en el humedal Estero Culebrón (Coquimbo, Chile) by Bravo-Naranjo, Víctor, Jiménez, Randall R, Zuleta, Carlos, Rau, Jaime R, Valladares, Pablo, Piñones, César

“…Examinamos los factores que influyen en la selección de presas por perros callejeros en el humedal Estero Culebrón (Coquimbo, Chile) y caracterizamos sus…”
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Quantifying and mapping species threat abatement opportunities to support national target setting by Mair, Louise, Amorim, Eduardo, Bicalho, Monira, Brooks, Thomas M., Calfo, Vincente, T. Capellão, Renata, Clubbe, Colin, Evju, Marianne, Fernandez, Eduardo P., Ferreira, Gláucia C., Hawkins, Frank, Jiménez, Randall R., Jordão, Lucas S. B., Kyrkjeeide, Magni Olsen, Macfarlane, Nicholas B. W., Mattos, Bianca C., Melo, Pablo H. A., Monteiro, Lara M., Nic Lughadha, Eimear, Pougy, Nina, Raimondo, Domitilla C., Setsaas, Trine Hay, Shen, Xiaoli, Siqueira, Marinez Ferreira, Strassburg, Bernardo B. N., McGowan, Philip J. K.

“…The successful implementation of the Convention on Biological Diversity's post‐2020 Global Biodiversity Framework will rely on effective translation of targets…”
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Ecoevolutionary processes structure milk microbiomes across the mammalian tree of life by Keady, Mia M, Jimenez, Randall R, Bragg, Morgan, Wagner, Jenna C P, Bornbusch, Sally L, Power, Michael L, Muletz-Wolz, Carly R

“…Milk production is an ancient adaptation that unites all mammals. Milk contains a microbiome that can contribute to offspring health and…”
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Ranavirus is widespread in Costa Rica and co-occurs with threatened amphibians by Whitfield, Steven M, Alvarado-Barboza, Gilbert, Abarca, Juan G, Zumbado-Ulate, Hector, Jimenez, Randall R, Kerby, Jacob

“…Amphibians are globally threatened by emerging infectious diseases, and ranaviruses are among the most concerning pathogens to threaten species in the wild. We…”
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Infection and co-infection by the amphibian chytrid fungus and ranavirus in wild Costa Rican frogs by Whitfield, Steven M, Geerdes, Erica, Chacon, Iria, Ballestero Rodriguez, Erick, Jimenez, Randall R, Donnelly, Maureen A, Kerby, Jacob L

“…Amphibian populations are globally threatened by emerging infectious diseases, and 2 pathogens in particular are recognized as major threats: the amphibian…”
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Combination of ketamine and xylazine with opioids and acepromazine in rats: Physiological changes and their analgesic effect analysed by ultrasonic vocalization by Alemán-Laporte, Jilma, Bandini, Luciana A, Garcia-Gomes, Mariana SA, Zanatto, Dennis A, Fantoni, Denise T, Amador Pereira, Marco A, Navas-Suárez, Pedro E, Kirsten, Thiago Berti, Jimenez, Randall R., Alvarado, Gilbert, Mori, Claudia Cabrera

“…In this study, the effect of four anaesthetic protocols that included the combination of xylazine (X) and ketamine (K) with acepromazine (A) and opioids…”
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The Fungicide Chlorothalonil Changes the Amphibian Skin Microbiome: A Potential Factor Disrupting a Host Disease-Protective Trait by Jiménez, Randall R., Alvarado, Gilbert, Ruepert, Clemens, Ballestero, Erick, Sommer, Simone

“…The skin microbiome is an important part of amphibian immune defenses and protects against pathogens such as the chytrid fungus Batrachochytrium dendrobatidis…”
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Selección de presas por perros callejeros en el humedal Estero Culebrón (Coquimbo, Chile) by Bravo-Naranjo, Víctor, Jiménez, Randall R., Zuleta, Carlos, Rau, Jaime R., Valladares, Pablo, Piñones, César

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The relationship between perch type and aggressive behavior in the lizard Norops polylepis (Squamata: Dactyloidae) by Randall R. Jiménez, Jorengeth Abad Rodríguez-Rodríguez

“…The intensity of aggression against intruders by owners of a territory has been related to the type of resources available to an individual within its…”
Get full text