Results 1 to 10 of about 8,953 (116)

Cranial Anatomy of the Earliest Marsupials and the Origin of Opossums [PDF]

open access: yesPLoS ONE, 2009
BackgroundThe early evolution of living marsupials is poorly understood in part because the early offshoots of this group are known almost exclusively from jaws and teeth.
Sandrine Ladevèze   +2 more
exaly   +2 more sources

Metagenomic analysis of fecal microbiomes reveals genetic potential for diverse hydrogen management strategies in marsupials [PDF]

open access: yesmSystems
Methane is an end product of plant biomass digestion by gut microbiota, though the amount produced and/or released varies between hosts. On a per-unit-of-feed basis, macropodid marsupials (e.g., kangaroos) have been reported to emit less methane than ...
Kate L. Bowerman   +10 more
doaj   +2 more sources

Use of Tie-in Fixation and Modified Poliglecaprone-25 Suture Cerclages in a Complex Femoral Diaphysis Fracture in a Black-Eared Opossum (Didelphis aurita): Case Report [PDF]

open access: yesIranian Journal of Veterinary Surgery, 2022
A juvenile opossum was found after an episode of trauma caused by a vehicular collision. In the emergency care, vital parameters and changes related to the trauma were measured, and it was not possible to verify any changes, other than a crepitation in ...
Delcio Magalhães   +2 more
doaj   +1 more source

Patterns of ontogenetic evolution across extant marsupials reflect different allometric pathways to ecomorphological diversity

open access: yesNature Communications, 2023
The relatively high level of morphological diversity in Australasian marsupials compared to that observed among American marsupials remains poorly understood.
Laura A. B. Wilson   +6 more
doaj   +1 more source

Evolutionary transcriptomics implicates new genes and pathways in human pregnancy and adverse pregnancy outcomes

open access: yeseLife, 2021
Evolutionary changes in the anatomy and physiology of the female reproductive system underlie the origins and diversification of pregnancy in Eutherian (‘placental’) mammals.
Katelyn Mika   +5 more
doaj   +1 more source

Molecular evolution of vision-related genes may contribute to marsupial photic niche adaptations

open access: yesFrontiers in Ecology and Evolution, 2022
Vision plays an essential role in the life of many animals. While most mammals are night-active (nocturnal), many have adapted to novel light environments. This includes diurnal (day-active) and crepuscular (twilight-active) species.
Ran Tian   +6 more
doaj   +1 more source

Conservation units in the core area of the Cerrado domain: an overview on the small nonvolant mammals (Rodentia and Didelphimorphia)

open access: yesHeringeriana, 2015
A review of small non-volant mammal species of the APA Gama e Cabeça de Veado was carried out, including new surveys in the "Estação Ecológica do Jardim Botânico" (EEJBB) and "Reserva Ecológica do Instituto Brasileiro de Geografia e Estatí­stica ...
Cibele R. Bonvicino   +5 more
doaj   +3 more sources

Molecular Evolution of CatSper in Mammals and Function of Sperm Hyperactivation in Gray Short-Tailed Opossum

open access: yesCells, 2021
Males have evolved species-specifical sperm morphology and swimming patterns to adapt to different fertilization environments. In eutherians, only a small fraction of the sperm overcome the diverse obstacles in the female reproductive tract and ...
Jae Yeon Hwang   +3 more
doaj   +1 more source

Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales

open access: yesFrontiers in Ecology and Evolution, 2022
The Cerrado biome is one of the global hotspots of biodiversity, and non-volant small mammals represent a significant portion of Cerrado species richness (45%) and endemism (86%).
Ana Paula Carmignotto   +2 more
doaj   +1 more source

Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary

open access: yesEcology and Evolution, 2021
The Cretaceous–Paleogene (K–Pg) mass extinction 66 million years ago was characterized by a worldwide ecological catastrophe and rapid species turnover. Large‐scale devastation of forested environments resulting from the Chicxulub asteroid impact likely ...
Jonathan J. Hughes   +4 more
doaj   +1 more source

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