منابع مشابه
European red squirrel population dynamics driven by squirrelpox at a gray squirrel invasion interface
Infectious disease introduced by non-native species is increasingly cited as a facilitator of native population declines, but direct evidence may be lacking due to inadequate population and disease prevalence data surrounding an outbreak. Previous indirect evidence and theoretical models support squirrelpox virus (SQPV) as being potentially involved in the decline of red squirrels (Sciurus vulg...
متن کاملLaminar organization of response properties in primary visual cortex of the gray squirrel (Sciurus carolinensis).
The gray squirrel (Sciurus carolinensis) is a diurnal highly visual rodent with a cone-rich retina. To determine which features of visual cortex are common to highly visual mammals and which are restricted to non-rodent species, we studied the laminar organization of response properties in primary visual area V1 of isoflurane-anesthetized squirrels using extra-cellular single-unit recording and...
متن کاملThe influence of distance to refuge on flight initiation distance in the gray squirrel (Sciurus carolinensis)
DILL, L. M., and HOUTMAN, R. 1989. The influence of distance to refuge on flight initiation distance in the gray squirrel (Sciurus carolinensis). Can. J. Zool . 67: 233 235. Gray squirrels (Sciurus carolinensis) typically run to the nearest tree to escape from predators they encounter while foraging on the ground. As the risk of capture increases with distance from the refuge tree, squirrels fe...
متن کاملSevere moniliformiasis (Acanthocephala: Moniliformidae) in a gray squirrel, Sciurus carolinensis, from Arkansas, USA.
Three hundred and seventy-five acanthocephalans, Moniliformis clarki, were removed from the small and large intestines of a gray squirrel from Arkansas County, Arkansas (USA). This is the first report of M. clarki from Arkansas. Enteric lesions, including distension, perforating ulcers, enteritis, crypt hypertrophy, goblet cell hyperplasia, and occlusions of the intestinal tract were observed, ...
متن کاملWildlife Conservation in Willamette Valley Grassland & Oak Habitats Species Account Western Gray Squirrel (Sciurus griseus)
Conservation Status—The western gray squirrel is classified as an ISSSSP Sensitive Species in Washington, and is an Oregon Conservation Strategy (OCS) Species as well as a game animal (ODFW 2006), however the species has no federal special status. In Washington, the western gray squirrel is designated as a state threatened species (WDFW 2009). Factors limiting western gray squirrel populations ...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1958
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay2645