Download or read book Natural History of Common Gartersnakes Thamnophis Sirtalis in East central British Columbia written by Jillian McAllister and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Widely distributed species typically exhibit variation in various aspects of their ecology throughout their range. Such variation offers opportunities for fundamental studies in evolution, including local adaptation, biogeographic rules, distributional limits, and speciation. Geographic variation also limits our ability to extrapolate from one population to another, making site-specific knowledge of ecology essential for wildlife management and conservation. I studied the natural history of Common Gartersnakes (Thamnophis sirtalis) at two sites in east-central British Columbia, where active seasons are short and cool. I used opportunistic sampling of snakes to study general features of their ecology and radiotelemetry to study movements and habitat selection, including hibernating sites. In September, snakes move from summer habitats to hibernating sites and then emerge from hibernation in April or May. Adult female T. sirtalis overwintered with 0 to 16 other adults in inconspicuous underground hollows, typically in forested habitats, near water and/or coarse woody debris; this is distinct from the large-scale communal hibernation seen in other northern populations. Hibernacula were typically distant from summer habitat (mean = 1485 ± 937 m SD, n = 8, range = 148-2657 m). Under the assumption that snakes exhibit site fidelity to hibernacula in consecutive years, I estimated the cumulative distance moved over the entire active season to be 7011 ± 3756 m SD (n = 9, range = 3510-15015 m). Gravid female snakes moved at significantly lower rates, followed more tortuous paths, and inhabited areas that were more open-canopied than their nongravid counterparts (n = 13). Nongravid snakes used locations with a higher percentage of ground cover than gravid snakes. Mating occurred in early spring near the hibernacula and parturition in early to mid August in summer habitat; litter size ranged from 3 to 25 and was not significantly correlated with the size of the female. Adult snakes preyed exclusively on adult Western Toads (Anaxyrus boreas) and juvenile snakes fed on leeches and metamorphosing toads. Through the identification of migratory routes, relevant summer and winter habitat characteristics, and hibernation sites, my study contributes to the protection and conservation of northern reptiles, which are particularly vulnerable to population declines compared to southern populations due to the restrictive cold climate.
Download or read book The Garter Snakes written by Douglas Athon Rossman and published by University of Oklahoma Press. This book was released on 1996 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Garter Snakes: Evolution and Ecology is the first comprehensive review of the genus Thamnophis in nearly ninety years. The book includes color plates of all species (many never previously figured in color); extensive discussion of ecology, behavior, and captive care; and a modern key to all species - as well as species-by-species summaries of the systematics and natural history of the thirty different garter snakes now recognized. Of particular interest are the descriptions of lesser-known species in Mexico. Because interest in reptiles has grown dramatically in recent years, this comprehensive guide is designed to appeal to as wide an audience as possible - to both the professional herpetologist interested in the biology of Thamnophis and the hobbyist who wants to know more about these diverse and widespread snakes, both in the home aquarium and in the wild. This up-to-date, appealing book, written by the world's leading authorities, will be extremely useful not only to herpetologists but also to conservationists, ecologists, pet owners, and other readers generally interested in natural history.
Download or read book Occurrence of the Garter Snake Thamnophis sirtalis in the Great Plains and Rocky Mountains written by T. Paul Maslin and published by DigiCat. This book was released on 2022-11-22 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains is a work by T. Paul Maslin. Garter snake is a common place name for largely innocuous, small to medium-sized serpents fitting to the genus Thamnophis in the family Colubridae. Native to North and Central America, species in the genus Thamnophis can be discovered from the subarctic plains of Canada to Costa Rica.
Download or read book The Ecology of Garter Snakes Thamnophis Sirtalis and T Elegans in Southeastern British Columbia written by Daniel Richard Farr and published by . This book was released on 1988 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproductive Ecology of Female Garter Snakes Thamnophis in Southeastern British Columbia written by M. Brent Charland and published by . This book was released on 1991 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Further Study of the Garter Snake Thamnophis Sirtalis in Northeastern Kansas written by Henry Sheldon Fitch and published by . This book was released on 2001 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Thermal Relations in the Aquatic Foraging Ecology of the Common Garter Snake Thamnophis Sirtalis at a Hatchery Site on Vancouver Island British Columbia written by Kari Jean Nelson and published by . This book was released on 1991 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of the Common Garter Snake Thamnophis Sirtalis at the Northern Limit of Its Range microform written by Karl W. (Karl Walter) Larsen and published by National Library of Canada. This book was released on 1986 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Use and Abundance of the Common Garter Snake Thamnophis Sirtalis at the Northern Limit of Its Range in Manitoba written by Jonathan P. Wiens and published by . This book was released on 2008 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The common garter snake (Thamnophis sirtalis) is a wide-ranging species that reaches the northern limit of its range in central Manitoba. Although Thamnophis sirtalis (and especially the subspecies parietalis) has been the subject of intense biological research, there are large gaps of knowledge regarding the ecology of this species in extreme northern latitudes. A recently discovered northern hibernaculum in the boreal forest region near Jenpeg, Manitoba, provided an ideal opportunity for comparing the ecology and biology of this species with geographically distant populations. The climate at Jenpeg is sub-arctic continental and consists of cold winters, and cool short summers. The area lies on the Canadian Shield. and is characterized by surface outcrops of granitic bedrock. Garter snakes were found colonizing artificial habitat features for winter habitat including dikes and rock quarries. Research on the ecology of this species was conducted from May 2005 to May 2007. Snakes emerged in late April and early May. Activity at the den lasted approximately two weeks before snakes dispersed for the summer. Mark-recapture results from 2005 indicate that this population is small (~79 individuals +_ 10.6) and exhibits a wide variation in adult sizes (350-1340 mm total length). Radio telemetry and funnel trapping have shown that summer habitat use is concentrated around wetlands. with wood frogs (Lithobates sylvatica) constituting the most common food source (56%). Many snakes dispersed over distances exceeding two kilometres, despite the apparent abundance of prey species near the den site. Analysis of colour patterns revealed substantial variation in the skin folds between the lateral scales. The majority of snakes expressed no red colouration on the lateral scales (45%) while some individuals expressed rare examples of bright red colouration (erythristism) (6%) and dark colouration (melanism) (1%). Traditional local knowledge gathered from aboriginal hunters, fishers and trappers outlined the long-term presence of garter snakes in the region, and provided local distribution data for the species. Aboriginal peoples stated that the overall population density of snakes in the region was low, and provided additional support for the findings of large variation in body sizes and colour. It is hypothesized that relative reproductive isolation and a prolonged overwintering period are factors contributing to the uniqueness of this northern population. Information from this study will benefit our understanding of garter snake biology and provide valuable information to assist the conservation efforts of wildlife and landscape managers in the region.
Download or read book Phenotypic Variation in Common Garter Snakes Thamnophis Sirtalis in the Southeastern United States in Relation to Sex and Habitat Use written by Zachary William Martin and published by . This book was released on 2017 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ecological Study of the Garter Snake Thamnophis Sirtalis written by and published by . This book was released on 1965 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Occurence of the Garter Snake Thamnophis Sirtalis in the Great Plains and Rocky Mountains written by Henry Sheldon Fitch and published by . This book was released on 1961 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ecological Study of the Garter Snake Thamnophis Sirtalis written by Henry Sheldon Fitch and published by . This book was released on 1965 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book COMPARATIVE ECOLOGY OF THE COMMON GARTER SNAKE THAMNOPHIS S SIRTALIS THE RIBBON SNAKE THAMNOPHIS S SAURITUS AND BUTLER S GARTER SNAKE THAMNOPHIS BUTLERI IN MIXED POPULATION written by Charles Congden Carpenter and published by . This book was released on 1951 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Occurrence of the Garter Snake Thamnophis Sirtalis in the Great Plains and Rocky Mountains written by and published by . This book was released on 1961 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Garter Snake Thamnophis Natural History written by Michael J. Edgehouse and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Communication and recognition are closely intertwined and have been well documented in closely related species over the past several decades. These two types of behaviors often will aid in fostering or disrupting coexistence of similar species. Frequently, it is through different diet patterns that similar species will be able to coexist. This study uses data from 1972 through 2006 to demonstrate the diet of Thamnophis sirtalis, T. atratus, T. elegans, and T. couchii throughout their California range of sympatry with Taricha torosa. Additionally, an in-depth examination of the diet of T. sirtalis, T. elegans, and T. atratus was conducted at the Santa Lucia Preserve (SLP) in Monterey County, California. The results of both data sets indicate that when alone T. sirtalis and T. atratus consume primarily anurans as their main food source. However, when sympatric, T. atratus consumes prey such as earthworms and slugs. Thamnophis sirtalis and T. atratus consume Taricha torosa throughout their California range. The differences of sympatric and allopatric diet of T. sirtalis and T. atratus led to ask the question; are the snakes utilizing different microhabitats? This study demonstrates that T. sirtalis and T. atratus prefer the same habitat when alone. In opposition, when together, T. sirtalis will frequently (21 of 24 individuals) use aggression to manipulate the spatial occupation of T. atratus as well as the position of T. elegans at SLP. This behavior is not consistent throughout T. sirtalis, T. atratus, T. elegans, and T. couchii range in California and appears to be unique to the SLP.
Download or read book Systematics of the Common Garter Snake Thamnophis Sirtalis written by John Jeffrey Boundy and published by . This book was released on 1999 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt:
