Plant exudates: a previously unreported feature in the diet of the common ringtail possum

Ecology ◽  
2017 ◽  
Vol 98 (8) ◽  
pp. 2219-2220
Author(s):  
David A. De Angelis
Keyword(s):  
Plant Exudates ◽  
The Common ◽  
Ringtail Possum

scholarly journals Expression of taste signal transduction molecules in the caecum of common marmosets

2013 ◽  
Vol 9 (4) ◽  
pp. 20130409 ◽  
Author(s):  
Sae Gonda ◽  
Shuichi Matsumura ◽  
Shoichiro Saito ◽  
Yasuhiro Go ◽  
Hiroo Imai
Keyword(s):  
Signal Transduction ◽  
Immunohistochemical Analysis ◽  
Common Marmoset ◽  
Rt Pcr ◽  
Common Marmosets ◽  
Plant Exudates ◽  
The Common ◽  
Signal Transduction Proteins ◽  
First Time ◽  
Human Primate

The extraoral presence of taste signal transduction proteins has recently been reported in rodents and humans. Here, we report for the first time the presence of these signal transduction proteins in the caecum of a non-human primate, the common marmoset. Quantitative RT-PCR data on the gene expression of taste signal transduction molecules (gustducin and TRPM5) in common marmosets suggested high expression in the caecum, which was not observed in other non-human primates. Immunohistochemical analysis confirmed the specific presence of gustducin and taste receptors in marmoset caecal cells. These results may relate to the specific feeding behaviour of marmosets, which consume plant exudates, primarily gums.

Diet of an inland population of the common ringtail possum (Pseudocheirus peregrinus)

2016 ◽  
Vol 38 (1) ◽  
pp. 130 ◽  
Author(s):  
Eden Hermsen ◽  
Anne Kerle ◽  
Julie M. Old
Keyword(s):  
New South ◽  
Habitat Requirements ◽  
South Wales ◽  
Pine Trees ◽  
Pseudocheirus Peregrinus ◽  
The Common ◽  
Microhistological Analysis ◽  
Vegetation Samples ◽  
Cypress Pine ◽  
Ringtail Possum

Populations of the common ringtail possum (Pseudocheirus peregrinus) in inland New South Wales have declined or disappeared. Habitat requirements and diet of these populations are poorly understood. Determining the diet of inland ringtail possums is crucial to understanding the factors limiting their survival, and was the focus of this study. Spotlighting surveys were conducted to locate ringtail possums, and scat and vegetation samples were collected for microhistological analysis. Ringtail possums were most frequently observed in red stringybark followed by bundy box and black cypress pine trees, and this correlated with the most common dietary items consumed.

Geographic variation in the diet of the powerful owl (Ninox strenua) at a local scale

2013 ◽  
Vol 61 (5) ◽  
pp. 372 ◽  
Author(s):  
Rohan J. Bilney
Keyword(s):  
Coastal Forests ◽  
Forest Sites ◽  
Sugar Glider ◽  
Pseudocheirus Peregrinus ◽  
The Common ◽  
Dietary Variation ◽  
Conservation Concern ◽  
Petaurus Breviceps ◽  
Ringtail Possum

This study reports the diet of the powerful owl (Ninox strenua) in East Gippsland, from a dataset of 2009 vertebrate prey items collected from 53 sites. Mammals dominated the diet at all sites, but birds were also consumed regularly. The greater glider (Petauroides volans) was the dominant dietary item across the region in terms of both frequency of consumption and biomass contribution. There was geographical dietary variation between coastal and foothill forest sites, with the sugar glider (Petaurus breviceps) and birds consumed more frequently in foothill forests, whereas the common ringtail possum (Pseudocheirus peregrinus) was frequently consumed only in coastal forests. Typically, a higher percentage of powerful owl diet comprised birds closer to cleared land. The dietary reliance upon hollow-dependent mammals in foothill forests (averaging >70%) is of conservation concern, especially when non-hollow-dependent prey are rare. Forest management activities, especially logging, that reduce densities of hollow-bearing trees in the landscape are therefore likely to decrease the long-term carrying capacity of the landscape for the powerful owl.

Preliminary Microscopic Investigations of the Digesta Derived From Foliage of Eucalyptus-Ovata (Labill) in the Digestive-Tract of the Common Ringtail Possum, Pseudocheirus-Peregrinus (Marsupialia)

1986 ◽  
Vol 34 (2) ◽  
pp. 157 ◽  
Author(s):  
TP Obrien ◽  
A Lomdahl ◽  
G Sanson
Keyword(s):  
Cell Walls ◽  
Faecal Pellets ◽  
Partial Digestion ◽  
Gut Function ◽  
Pseudocheirus Peregrinus ◽  
The Common ◽  
Eucalyptus Ovata ◽  
Micro Organisms ◽  
Microscopic Investigations ◽  
Ringtail Possum

A method is described that stabilizes vacuolar tannins in unchewed leaves of Eucalyptus ovata. This method, with light microscopy and electron microscopy, was used to study the fate of digesta in the gut of the common ringtail possum Pseudocheirus peregrinus. Normal animals (fed fresh foliage and practising coprophagy) were compared with animals denied access either to fresh foliage or to soft faecal pellets in the week before they were killed. Both manipulations appear to disturb gut function and create a need for caution in interpreting the observations. Nonetheless the results demonstrate some tanning of leaf cytoplasts in the ringtail possum, but the quantitative significance of the dietary losses so incurred is difficult to estimate. Partial digestion of cell walls and tanned cytoplasts occurs in the caecum, where massive populations of micro-organisms become attached to digestion-resistant tissue components. These 'microbial rafts' are reingested as soft pellets by coprophagy and the bacteria largely digested.

Diet of the tiger quoll (Dasyurus maculatus)

1995 ◽  
Vol 22 (3) ◽  
pp. 341 ◽  
Author(s):  
CA Belcher
Keyword(s):  
Small Mammals ◽  
Prey Species ◽  
Species Abundance ◽  
European Rabbit ◽  
Brushtail Possum ◽  
Important Prey ◽  
The Common ◽  
Common Brushtail Possum ◽  
Ringtail Possum

The diet of the tiger quoll (Dasyurus maculatus) in East Gippsland, Victoria, was investigated by systematically collecting scats from two latrines between December 1990 and May 1993. From the analysis of these scats, the tiger quoll was found to be a predator of vertebrate prey, largely dependent on mediumsized mammals (500 g to 5 kg). The most important prey species were the European rabbit, the common brushtail possum and the common ringtail possum. Other prey included Antechinus species, bush rats, echidnas, macropods, wombats, birds, invertebrates and reptiles. Some variation in diet occurred between seasons, due to seasonal availability of prey. A shift in diet detected between years was attributed to the variation in rainfall and the effect this had on prey species abundance. Significant differences in diet were found between adult and subadult tiger quolls. Subadult quolls consumed significantly more small mammals, ringtail possums, invertebrates and reptiles and significantly fewer rabbits than did adult quolls. Further analysis of the tiger quolls' diet, by estimating the mass contribution of prey taxa to the diet, revealed that medium-sized prey contributed more than 80% of the biomass of prey consumed.

Will arboreal mammals use rope-bridges across a highway in eastern Australia?

2013 ◽  
Vol 35 (1) ◽  
pp. 30 ◽  
Author(s):  
Ross L. Goldingay ◽  
David Rohweder ◽  
Brendan D. Taylor
Keyword(s):  
Camera Traps ◽  
Brushtail Possum ◽  
The Pacific ◽  
Eastern Australia ◽  
Pseudocheirus Peregrinus ◽  
The Common ◽  
Common Brushtail Possum ◽  
Squirrel Glider ◽  
Road Crossing ◽  
Ringtail Possum

Artificial structures designed to promote road-crossing by arboreal mammals are increasingly being installed in Australia but there is a limited understanding of their usefulness. We studied five 50–70-m-long rope-bridges (encompassing three designs) erected across the Pacific Highway, a major freeway in eastern Australia. Native arboreal mammals showed a willingness to explore these structures, being detected by camera traps on four rope-bridges. The vulnerable squirrel glider (Petaurus norfolcensis) crossed on one rope-bridge at least once every 4.5 weeks over a 32-week period. The feathertail glider (Acrobates pygmaeus), common ringtail possum (Pseudocheirus peregrinus) and the common brushtail possum (Trichosurus vulpecula) were detected on one of two rope-bridges that extended under the freeway at creek crossings. The feathertail glider was detected on all three rope-bridge designs. Our results suggest that rope-bridges have the potential to restore habitat connectivity disrupted by roads for some arboreal mammals. Further research is needed to refine the design and placement of rope-bridges as well as to determine whether these structures promote gene flow.

Feeding-Behavior and Diet of the Common Ringtail Possum, Pseudocheirus-Peregrinus, in Eucalyptus Woodlands and Leptospermum Thickets in Southern Victoria

1987 ◽  
Vol 35 (5) ◽  
pp. 487 ◽  
Author(s):  
LI Pahl
Keyword(s):  
Feeding Behavior ◽  
Food Selection ◽  
Species Trees ◽  
Flower Buds ◽  
Pseudocheirus Peregrinus ◽  
Different Populations ◽  
The Common ◽  
Four Levels ◽  
Eucalyptus Maculata ◽  
Ringtail Possum

The foliage of Eucalyptus spp. contributed 61-98% of the annual diet of ringtails at sites dominated by Eucalyptus spp. or prickly teatree, Leptospermum juniperinum. Up to 45% of the Eucalyptus foliage consumed was young, and young foliage was mostly eaten during spring and summer. The remainder of the diet consisted of foliage of several species of shrub and significant proportions of the diet of one population consisted of flowers and/or flower buds of Eucalyptus maculata during winter. The proportion of shrub foliage eaten was generally highest at sites dominated by less preferred Eucalyptus spp., such as E. tereticornis, E. camaldulensis and E. botryoides, compared to sites dominated by the favoured species, E. ovata, E. dives, and E. maculata. Ringtails in thickets of coast teatree, L. laevigatum, fed predominantly on foliage of that species. The proportions of Eucalyptus and shrub foliage eaten by different populations did not appear to be correlated with availability, suggesting that ringtails fed selectively from the foods available. Food selection was practised at four levels: between species, trees, leaves and leaf parts. Partly digested leaf material appeared to have been consumed by pouch young before they had begun to feed on foliage.

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