Results 61 to 70 of about 967 (193)

Bilateral pre-axial polydactyly in a wild juvenile Hoffmann’s two-toed sloth (Choloepus hoffmanni)

Xenarthra
Polydactyly is a relatively common congenital condition in humans, also described in some other species of animals, where more digits than usual are present in the hands or feet. The literature about congenital anomalies in sloths is sparse.
Sara Goñi Martinez, Ambre Thiriet, Sofia Astorga Alvarado, Marta Venegas   +3 more
doaj   +1 more source

Locus‐Specific Convergent Evolution and Interchromosomal Rearrangements Contribute to the Diversification of Amniote Type I Interferons

Evolutionary Applications, Volume 19, Issue 5, May 2026.
ABSTRACT Type I interferons (IFNs) play essential roles in antiviral immune responses. The extensive diversification of type I IFNs into various subtypes and duplicated gene copies has posed significant challenges for evolutionary reconstruction. To address this, we developed the type I IFN sequence composition and structure (IFN‐SCOPE) model and gene ...
Le Zhang, Fubo Ma, Jinpeng Liu, Yangchao Yu, Junxiao Ma, Lei Zhang, Bing Li, Chaofan Li, Kang Li, Peng Liu, Liguo Zhang   +10 more
wiley   +1 more source

Ameaças à saúde e conservação de preguiças (Bradypus e Choloepus) de vida livre sob influência antrópica em Manaus, Estado do Amazonas, Brasil

, 2023
Anthropogenic disturbances affecting forest areas can increase disease prevalence and susceptibility in several species of arboreal mammals, such as sloths.
Chiesorin Neto, Laerzio, Ichikawa, Ricardo Shoiti [UNESP], Teixeira, Carlos Roberto [UNESP], Rahal, Sheila Canevese [UNESP], Nava, Alessandra Ferreira Dales, Dos Santos, Laynara Silva [UNESP]   +5 more
core   +1 more source

Simplified, Portable and Cost‐Efficient Airborne eDNA Metabarcoding to Expand Tropical Biodiversity Assessments

Environmental DNA, Volume 8, Issue 2, March/April 2026.
This study introduces a liquid‐based sampling approach for airborne eDNA (A). Using a greenhouse mock‐community for optimization (B), we use the novel approach in the tropical Andes to demonstrate its versatility and the complementary nature of airborne and aquatic eDNA for molecular biodiversity assessments (C).
Christopher Heine, Jesse Erens, Lukas Reese, Henrik Krehenwinkel, Claudia Lansac, Stefan Lötters, Amadeus Plewnia   +6 more
wiley   +1 more source

Reproductive Cycle Stage Assessment in the Two-Toed Sloth (Choloepus Hoffmanni, Preliminary Results

The number of two-toed sloths (Choloepus hoffmanni) has significantly decreased in the last years. Deepening the knowledge of this tropical mammal's reproductive physiology is essential to improve captive breeding within conservation programs for this ...
Such, Roger, Mayenco Aguirre, Ana María, Sánchez Calabuig, María Jesús, García Vila, Encarnación, Santiago Moreno, Julián, Hernández, Leticia, Gómez Redondo, Isabel, Gutiérrez Cepeda, Luna, Calvo Fernández, Cristina, Cerdeira Lozano, Joaquín Vicente   +9 more
core   +2 more sources

Chewing through the Miocene: an examination of the feeding musculature in the ground sloth Hapalops from South America (Mammalia: Pilosa) [v1; ref status: indexed, http://f1000r.es/2pu]

F1000Research, 2014
Hapalops, a smaller-sized and early sloth of the Megatheroidea, appeared in the middle Miocene Santa Cruz formation of Argentina. This genus is part of the group from which later, larger megatheroids arose, i.e., Nothrotheriops and Megatherium.
Virginia L. Naples, Robert K. McAfee
doaj   +1 more source

Morphofunctional Space of the Forelimb in Caraguatypotherium munozi (Notoungulata; Mesotheriidae): Insights Into Wrist‐Powered Digging

Journal of Morphology, Volume 286, Issue 8, August 2025.
Caraguatypotherium munozi displays a distinctive morphofunctional configuration combining high wrist flexor leverage with reduced elbow mechanical advantage—traits consistent with wrist‐dominated scratch‐digging. Multivariate analyses place it outside the core morphospaces of extant locomotor groups.
Paul Medina‐González, Karen Moreno
wiley   +1 more source

Open Fracture of the Femur in a Two-toed Sloth (Choloepus didactylus) - Treatment and Rehabilitation

, 2022
Background: The Choloepus didactylus is characterized by having 2 fingers on the forelimbs and 3 on the hind limbs, being found more frequently in northern South America, in countries such as Venezuela, Guyana, Ecuador, Peru, and Brazil.
Chiesorin Neto, Laerzio, Santos, Laynara Silva dos [UNESP], Rahal, Sheila Canevese [UNESP], Cunha, Daniel Alexander Pereira da, Teixeira, Carlos Roberto [UNESP], Lima, Natalia Aparecida de Souza, Nava, Alessandra Ferreira Dales   +6 more
core   +1 more source

Molecular decay of enamel matrix protein genes in turtles and other edentulous amniotes

BMC Evolutionary Biology, 2013
Background Secondary edentulism (toothlessness) has evolved on multiple occasions in amniotes including several mammalian lineages (pangolins, anteaters, baleen whales), birds, and turtles.
Meredith Robert W, Gatesy John, Springer Mark S   +2 more
doaj   +1 more source

Screwworm reemergence, illegal cattle movements, and emerging risks to wildlife and protected areas in Mesoamerica

Conservation Biology, EarlyView.
Lucy Keatts, Luis Guerra, Jeremy Radachowsky, Jorge Rojas‐Jiménez, Rony Garcia‐Anleu, Jonathan Pérez‐Flores, Chris Walzer, Diego Montecino‐Latorre   +7 more
wiley   +1 more source