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Journal articles on the topic 'Eastern chipmunk – Food'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Mahan, Carolyn G., and Richard H. Yahner. "Effects of forest fragmentation on behaviour patterns in the eastern chipmunk (Tamias striatus)." Canadian Journal of Zoology 77, no. 12 (1999): 1991–97. http://dx.doi.org/10.1139/z99-174.

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We examined behaviour in adult eastern chipmunks (Tamias striatus) from 1992 to 1995 in a landscape altered by forest clear-cutting in central Pennsylvania, U.S.A. Our objective was to compare behaviour patterns in chipmunk populations occupying mature continuous forest versus mature forested corridors (100 m wide) surrounded by clearcuts. Chipmunks spent a significantly greater proportion of their time pausing in the forested-corridor habitat than in the continuous-forest habitat. In addition, chipmunks spent less time locomoting and foraging in the forested-corridor habitat than in the conti

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2

Hall, C. L., M. M. Humphries, and D. L. Kramer. "Resource tracking by eastern chipmunks: the sampling of renewing patches." Canadian Journal of Zoology 85, no. 4 (2007): 536–48. http://dx.doi.org/10.1139/z07-030.

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When food patches vary in quality over time, sampling by repeated visits can allow animals to track this variation and improve their foraging success. Sampling, however, requires spending time visiting patches that are currently poor. The optimal investment in sampling should depend on characteristics of the patch, the animal, and the environment, but there are few empirical studies of these relationships in nature. Here, we describe discovery, exploitation, and sampling of randomly varying artificial food patches by free-ranging eastern chipmunks ( Tamias striatus (L., 1758)). Chipmunks effec

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3

Munro, D., D. W. Thomas, and M. M. Humphries. "Extreme suppression of aboveground activity by a food-storing hibernator, the eastern chipmunk (Tamias striatus)." Canadian Journal of Zoology 86, no. 5 (2008): 364–70. http://dx.doi.org/10.1139/z08-008.

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Eastern chipmunks ( Tamias striatus (L., 1758)) capitalize on pulsed production of storable seed from masting trees by accumulating large, long-term larder hoards in their burrow. Since this species does not accumulate fat, hoarded food is the sole source of energy used during hibernation and inactive periods. Because hoards can be very large, they offer chipmunks the possibility of forgoing aboveground foraging when seeds or nuts are not abundant on the forest floor. Here, we present evidence that at least 82 chipmunks in two different populations interrupted aboveground activity for 9–11 mon

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4

Edwards, Mark A., and Graham J. Forbes. "Food Habits of Ermine, Mustela erminea, in a Forested Landscape." Canadian Field-Naturalist 117, no. 2 (2003): 245. http://dx.doi.org/10.22621/cfn.v117i2.703.

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Most research pertaining to the diet of North American weasels has been conducted in agricultural areas and may not be representative of diets in forested regions. Ermine carcasses (N = 155) collected from trappers during a two-week harvest (16-30 November 1996) in forested New Brunswick were analyzed for food habits. The contents of 81 stomachs and 98 gastrointestinal tracts (N = 179) were considered as separate eating events and used in the calculation of the percent frequency of occurrence. Results suggest that soricids (28.0%), arvicolines (24.6%), and cricetines (17.3%) comprised two-thir

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5

French, Alan R. "INTERDEPENDENCY OF STORED FOOD AND CHANGES IN BODY TEMPERATURE DURING HIBERNATION OF THE EASTERN CHIPMUNK,TAMIAS STRIATUS." Journal of Mammalogy 81, no. 4 (2000): 979–85. http://dx.doi.org/10.1644/1545-1542(2000)081<0979:iosfac>2.0.co;2.

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6

Svendsen, G. E., and M. M. White. "Body mass and first-time reproduction in female chipmunks (Tamias striatus)." Canadian Journal of Zoology 75, no. 11 (1997): 1891–95. http://dx.doi.org/10.1139/z97-819.

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Body mass has been proposed as a factor that contributes to the onset of puberty in some species of mammals. In this study we examined the relationship between body mass and primiparity in the eastern chipmunk (Tamias striatus) by comparing females that reproduced and those that did not during any given breeding opportunity. We also investigated whether season of birth influenced the season of first reproduction. No differences in season of first reproduction were observed between spring-born and fall-born females. Females that produced a litter had significantly greater body mass than did fem

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7

Lemieux, Vincent, Dany Garant, Denis Reale, and Patrick Bergeron. "Spatio-temporal variation in oxidative status regulation in a small mammal." PeerJ 7 (October 8, 2019): e7801. http://dx.doi.org/10.7717/peerj.7801.

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Life-history allocation trade-offs are dynamic over time and space according to the ecological and demographical context. Fluctuations in food availability can affect physiological trade-offs like oxidative status regulation, reflecting the balance between pro-oxidant production and antioxidant capacity. Monitoring the spatio-temporal stability of oxidative status in natural settings may help understanding its importance in ecological and evolutionary processes. However, few studies have yet conducted such procedures in wild populations. Here, we monitored individual oxidative status in a wild

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8

Otter, Ken. "The impact of potential predation upon the foraging behaviour of eastern chipmunks." Canadian Journal of Zoology 72, no. 10 (1994): 1858–61. http://dx.doi.org/10.1139/z94-252.

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Predation risk may have a profound impact upon foraging behaviour. I studied how potential exposure to predation affected the foraging behaviour of eastern chipmunks (Tamias striatus). I measured the time taken to approach a patch ("approach time"), the period of residency in the patch ("patch residence time"), the degree of vigilance, and the size of the load of seeds taken by chipmunks foraging at patches (food trays) in both open and forested sites. Chipmunks have shorter approach times to trays in the open than to trays amongst forest cover. Although the load size taken did not differ betw

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9

LaZerte, S. E., and D. L. Kramer. "Activity of eastern chipmunks (Tamias striatus) during the summer and fall." Canadian Journal of Zoology 94, no. 10 (2016): 685–95. http://dx.doi.org/10.1139/cjz-2016-0064.

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Measuring activity of small mammals in the field is challenging because they are often out of view. We used a novel method, based on temperatures of collar radio transmitters, to quantify the proportion of time eastern chipmunks (Tamias striatus (L., 1758)) spent active, curled up resting, and torpid during the summer and fall of 2 years in southern Quebec. Time active over the 24 h day was lower in a nonmast (8%) than a mast (26%) year. In the mast year, activity varied strongly from a low of 7% during the summer lull to a high of 35% in the fall. Chipmunks that exploited a feeder had higher

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10

Gibson, K. W., C. L. Hall, and D. L. Kramer. "Time-concentrated sampling: a simple strategy for information gain at a novel, depleted patch." Canadian Journal of Zoology 84, no. 10 (2006): 1513–21. http://dx.doi.org/10.1139/z06-139.

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When an animal has found and consumed food at a new location, information about whether and when food will be present again could improve future foraging efficiency. A series of rapid returns followed by less frequent visits and finally abandonment of the patch could provide such information. By analogy with area-concentrated (area-restricted) search, we call this hypothesized pattern “time-concentrated sampling”. We tested whether eastern chipmunks ( Tamias striatus (L., 1758)) would show time-concentrated sampling in the field and whether the pattern of visits would be affected by patch valu

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11

Page, L. Kristen, Robert K. Swihart, and Kevin R. Kazacos. "Seed preferences and foraging by granivores at raccoon latrines in the transmission dynamics of the raccoon roundworm (Baylisascaris procyonis)." Canadian Journal of Zoology 79, no. 4 (2001): 616–22. http://dx.doi.org/10.1139/z01-024.

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Raccoons (Procyon lotor) habitually defecate at preferred sites (latrines). Feces at latrines often harbor eggs of the roundworm Baylisascaris procyonis, a parasite of raccoons that is pathogenic to numerous species of small vertebrates. Undigested seeds are also commonly found in raccoon feces, the composition varying with availability of seed types. Thus, feces at latrines may serve as a source of food and pose a mortality risk for small granivores. To examine this interaction, we manipulated the seed composition in feces at simulated raccoon latrines and tested for differences in vertebrate

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12

Barrette, Simon, and Luc-Alain Giraldeau. "Evidence against maximization of gross rate of seed delivery to the burrow in food-hoarding eastern chipmunks, Tamias striatus." Animal Behaviour 75, no. 2 (2008): 655–61. http://dx.doi.org/10.1016/j.anbehav.2007.07.019.

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13

MUNRO, DANIEL, DONALD W. THOMAS, and MURRAY M. HUMPHRIES. "Torpor patterns of hibernating eastern chipmunks Tamias striatus vary in response to the size and fatty acid composition of food hoards." Journal of Animal Ecology 74, no. 4 (2005): 692–700. http://dx.doi.org/10.1111/j.1365-2656.2005.00968.x.

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14

Gharnit, Elouana, Patrick Bergeron, Dany Garant, and Denis Réale. "Exploration profiles drive activity patterns and temporal niche specialization in a wild rodent." Behavioral Ecology 31, no. 3 (2020): 772–83. http://dx.doi.org/10.1093/beheco/araa022.

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Abstract Individual niche specialization can have important consequences for competition, fitness, and, ultimately, population dynamics and ecological speciation. The temporal window and the level of daily activity are niche components that may vary with sex, breeding season, food supply, population density, and predator’s circadian rhythm. More recently, ecologists emphasized that traits such as dispersal and space use could depend on personality differences. Boldness and exploration have been shown to correlate with variation in foraging patterns, habitat use, and home range. Here, we assess

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15

Leung, Christelle, Bernard Angers, and Patrick Bergeron. "Epigenetic anticipation for food and reproduction." Environmental Epigenetics 6, no. 1 (2020). http://dx.doi.org/10.1093/eep/dvz026.

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Abstract Physiological changes in anticipation of cyclic environmental events are common for the persistence of populations in fluctuating environments (e.g. seasons). However, dealing with sporadic resources such as the intermittent production of seed masting trees may be challenging unless reliable cues also make them predictable. To be adaptive, the anticipation of such episodic events would have to trigger the corresponding physiological response. Epigenetic modifications could result in such physiological anticipatory responses to future changes. The eastern chipmunk (Tamias striatus) is

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