Immigration pattern and success in red squirrels

1993 ◽  
Vol 33 (3) ◽  
pp. 159-167 ◽  
Author(s):  
Luc Wauters ◽  
Andr�A. Dhondt
Keyword(s):  
Red Squirrels

Hepatozoon in Eurasian red squirrels Sciurus vulgaris, its taxonomic identity, and phylogenetic placement

2021 ◽  
Author(s):  
David Modrý ◽  
Lada Hofmannová ◽  
Petr Papežík ◽  
Karolina Majerová ◽  
Jan Votýpka ◽  
...  
Keyword(s):  
Sciurus Vulgaris ◽  
Red Squirrels ◽  
Phylogenetic Placement

scholarly journals Potential of Small Culverts as Wildlife Passages on Forest Roads

2021 ◽  
Vol 13 (13) ◽  
pp. 7224
Author(s):  
Hsiang-Ling Chen ◽  
Erin E. Posthumus ◽  
John L. Koprowski
Keyword(s):  
Animal Movement ◽  
Small Dimension ◽  
Lynx Rufus ◽  
Tamiasciurus Hudsonicus ◽  
Red Squirrels ◽  
Forest Roads ◽  
Alternative Pathways ◽  
Slow Moving ◽  
Trail Cameras ◽  
Spermophilus Variegatus

Roads and traffic can cause animal mortality. Specifically, roads serve as barriers by impeding animal movement, resulting in demographic and genetic consequences. Drainage structures, such as culverts, can provide linkages between habitat patches. However, the potential of small culverts with diameters of <60 cm (e.g., wildlife passages that facilitate movement on forest roads) are relatively unknown. In this study, we used trail cameras to monitor the use of 14 small culverts, by mammals, along forest roads on Mt. Graham, home of the critically endangered Mt. Graham red squirrels (Tamiasciurus hudsonicus grahamensis), in southeastern Arizona, USA. From 2011 to 2013, we only recorded 20 completed road crossings through culverts. More than half of culvert uses were by striped skunks (Mephitis mephitis), followed by the rock squirrel (Spermophilus variegatus) and the bobcat (Lynx rufus). The Mt. Graham red squirrel was the only species that was common along the roads, but never crossed the roads. Culverts with higher usages were characterized by shorter culvert lengths and absence of accumulated soil inside the culverts. Our study shows that small-dimension drainage systems may provide alternative pathways for wildlife crossing roads, especially for slow moving and ground dwelling species. However, the potential of small culverts assisting wildlife crossings can only be maximized when culverts are accessible year-round.

Jack pine cone quality and cache sizes of red squirrels in southern New Brunswick, Canada

1997 ◽  
Vol 75 (2) ◽  
pp. 332-335 ◽  
Author(s):  
Michael A. Setterington ◽  
Daniel M. Keppie
Keyword(s):  
New Brunswick ◽  
Pinus Banksiana ◽  
Seed Mass ◽  
Dry Mass ◽  
Jack Pine ◽  
Tamiasciurus Hudsonicus ◽  
Red Squirrels ◽  
Length Width ◽  
Total Seed ◽  
Number Of Seeds

Relationships between external cone characteristics (length, width, wet and dry mass), cone quality (total seed mass as a proportion of cone mass, total number of seeds per cone, total seed mass per cone), and number of cones in caches were evaluated for caches of jack pine (Pinus banksiana) cones belonging to red squirrels (Tamiasciurus hudsonicus) in two plantations in southern New Brunswick. Cone length and mass were good predictors of the total number of seeds per cone and total seed mass per cone. Length accounted for a small proportion of the variance of total seed mass as a proportion of cone mass. There was no relationship between the number of seeds or total seed mass per cone and the number of cones per cache.

Comparison of Behavior Development in Snowshoe Hares and Red Squirrels

1956 ◽  
Vol 37 (1) ◽  
pp. 64 ◽  
Author(s):  
Margaret M. Nice ◽  
Constance Nice ◽  
Dorothea Ewers
Keyword(s):  
Red Squirrels ◽  
Behavior Development ◽  
Snowshoe Hares

scholarly journals Causes of mortality and pathological lesions observed post-mortem in red squirrels (Sciurus vulgaris) in Great Britain

2013 ◽  
Vol 9 (1) ◽  
pp. 229 ◽  
Author(s):  
Victor R Simpson ◽  
Judith Hargreaves ◽  
Helen M Butler ◽  
Nicholas J Davison ◽  
David J Everest
Keyword(s):  
Great Britain ◽  
Post Mortem ◽  
Sciurus Vulgaris ◽  
Red Squirrels ◽  
Pathological Lesions ◽  
Causes Of Mortality

Squirrelpox Virus in Red Squirrels (Sciurus vulgaris) in the Republic of Ireland

2013 ◽  
Vol 49 (4) ◽  
pp. 1070-1073 ◽  
Author(s):  
Favel Naulty ◽  
David Everest ◽  
Neil D. Warnock ◽  
Kevin Phelan ◽  
John J. Callanan
Keyword(s):  
Sciurus Vulgaris ◽  
Red Squirrels ◽  
Republic Of Ireland ◽  
The Republic ◽  
Squirrelpox Virus
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