Results 1 to 10 of about 13,705 (251)

Watery and dark axons in Wallerian degeneration of the opossum's optic nerve: different patterns of cytoskeletal breakdown?

open access: yesAnais da Academia Brasileira de Ciências, 2001
In this paper we report a qualitative morphological analysis of Wallerian degeneration in a marsupial. Right optic nerves of opossums Didelphis marsupialis were crushed with a fine forceps and after 24, 48, 72, 96 and 168 hours the animals were ...
MARCELO S. NARCISO   +2 more
doaj   +1 more source

Elucidating Patterns in the Occurrence of Threatened Ground-Dwelling Marsupials Using Camera-Traps

open access: yesAnimals, 2019
Establishing trends in endangered fauna against management efforts is a key but often challenging enterprise. Camera-traps offer a new and literal window into monitoring many different mammalian species.
Andrew W. Claridge   +2 more
doaj   +1 more source

Diversidad de mamíferos en un remanente de bosque urbano de la ciudad de Medellín (Antioquia, Colombia)

open access: yesActualidades Biológicas, 2020
La gran diversidad de especies en centros urbanos de Colombia contrasta con la rápida e intensa degradación de los hábitats donde se concentra dicha diversidad.
Tomás Villada-Cadavid   +1 more
doaj   +1 more source

Quantification of argyrophillic, argentaffin and insulin immunoreactive cells in the small intestine in the opossum Didelphis aurita (Wied-Neuwied, 1826) - doi: 10.4025/actascibiolsci.v33i4.8644

open access: yesActa Scientiarum: Biological Sciences, 2011
The objective of this study was to quantify argyrophillic, argentaffin and insulin immunoreactive endocrine cells in the different segments of the small intestine of Didelphis aurita and measure probable differences in the number of these cells between ...
Gláucia Marques Freitas Ribeiro   +4 more
doaj   +1 more source

Assessment of the diet of the critically endangered northern hairy‐nosed wombat (Lasiorhinus krefftii) using DNA metabarcoding

open access: yesEcology and Evolution, 2023
Invasive buffel grass (Cenchrus ciliaris) is considered a threat to the critically endangered northern hairy‐nosed wombat (Lasiorhinus krefftii; NHW). Buffel grass outcompetes native grasses, reducing availability of native food items for NHW, and causes
Fiona Casey   +2 more
doaj   +1 more source

Scent detection dogs as a novel method for oestrus detection in an endangered species, the Tasmanian devil (Sarcophilus harrisii)

open access: yesFrontiers in Veterinary Science, 2023
Captive breeding is a critical tool for conservation of endangered species. Identifying the correct time to pair males and females can be a major challenge for captive breeding programmes, with current methods often being invasive or slow. Detection dogs
Hannah E. Roberts   +5 more
doaj   +1 more source

Influence of pitfall designs and use of baits on the capture of small mammals in Southern Minas Gerais, Brazil - doi: 10.4025/actascibiolsci.v35i4.17498

open access: yesActa Scientiarum: Biological Sciences, 2013
Each kind of trap tends to be selective on species sampled, in a way that each one only reveals part of the abundance and species richness of the community sampled.
Daniel Gomes da Rocha, Marcelo Passamani
doaj   +1 more source

Relative demographic susceptibility does not explain the extinction chronology of Sahul’s megafauna

open access: yeseLife, 2021
The causes of Sahul’s megafauna extinctions remain uncertain, although several interacting factors were likely responsible. To examine the relative support for hypotheses regarding plausible ecological mechanisms underlying these extinctions, we ...
Corey JA Bradshaw   +5 more
doaj   +1 more source

First you get the money, then you get the power: Comparing the cost and power of monitoring programs to detect changes in occupancy of a threatened marsupial predator

open access: yesConservation Science and Practice, 2023
Ecological monitoring is crucial for tracking changes in the status of species over time. However, ensuring that monitoring programs possess adequate statistical power—capacity to detect changes in populations with a high level of confidence—remains a ...
Harry A. Moore   +4 more
doaj   +1 more source

The marsupial Didelphis albiventris is an improbable host of Paracoccidioides brasiliensis in an endemic area of paracoccidioidomycosis in Minas Gerais, Brazil

open access: yesMemorias do Instituto Oswaldo Cruz, 2001
To determine whether Didelphis albiventris is naturally infected with Paracoccidioides brasiliensis, 20 specimens of this mammal were studied by both direct cultivation of their viscera (spleen, liver and lungs) and by inoculation of Swiss mice by the ...
ML Silva-Vergara   +4 more
doaj   +1 more source

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