Results 61 to 70 of about 1,095 (179)
Bilateral pre-axial polydactyly in a wild juvenile Hoffmann’s two-toed sloth (Choloepus hoffmanni)
XenarthraPolydactyly 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 +3 more
doaj +1 more source
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 +10 more
wiley +1 more source
Choloepus hoffmanni Peters 1858
, 2005 Published as part of Wilson, Don E. & Reeder, DeeAnn, 2005, Order Pilosa, pp. 100-103 in Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1, Baltimore :The Johns Hopkins University Press on page 101, DOI: 10.5281/zenodo ...
Wilson, Don E., Reeder, DeeAnn
openaire +1 more source
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 +6 more
wiley +1 more source
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
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
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 +2 more
doaj +1 more source
Austral Ecology, Volume 50, Issue 7, July 2025.We found rich and compositionally different assemblages of medium and large‐sized mammals in protected areas on the southern edge of Amazon. However, both have high rates of mammal defaunation. We argue that anthropogenic threats in the Amazon Arc of Deforestation are eroding large ungulate populations, especially peccaries.
Mateus Melo‐Dias +6 more
wiley +1 more source
Evolutionary Applications, 2020 Sloths are notoriously slow and consequently have limited dispersal ability, which makes them particularly vulnerable to the effects of habitat fragmentation and degradation. Sloths in Costa Rica are considered of conservation concern due to habitat loss,
Rebecca N. Cliffe +6 more
doaj +1 more source
Adaptations of the Vertebrate Retina to Low‐Light Conditions: A Review
Anatomia, Histologia, Embryologia, Volume 54, Issue 4, July 2025.ABSTRACT Vision is a critical sensory modality in vertebrates, enabling diverse adaptations to environmental challenges. This review explores the remarkable adaptations of vertebrate eyes to low‐light environments, such as nocturnal habitats, deep‐sea ecosystems and subterranean niches.
R. Cobo +3 more
wiley +1 more source