great basin gopher snake

The presence of thermal and security cover at hibernacula entrances is important as gophersnakes may remain just outside the den for several days after emergence in spring and before entering dens in fall (Parker and Brown 1980). The smallest female with enlarged follicles from the Osoyoos area was 695 mm in snout-vent length (SVL), which was also the size of the smallest male found with a female during the courtship period (Shewchuk 1996). (Bertram et al. Page, L. A. Copeia 1998:463–466. High and moderately suitability habitat was fairly well distributed and contiguous throughout the range of most populations, with the exceptions of the Kelowna, Vernon and Kamloops areas (Haney and Sarell 2007).

Gopher Snake (Pituophis catenifer deserticola) Inventory Strategy for British Columbia. Hobson and Associates. 2007). Food habits, consumption rates, and predation rates of western rattlesnakes and gopher snakes in southwestern Idaho.

Forest Practices Board, Southern Interior Region, Victoria, British Columbia. 2011). The Fraser-Thompson-Nicola subpopulation appears to be disjunct from all other gophersnake populations at present but most likely was historically connected between Kamloops and the north Okanagan (Westwold area) (Haney and Sarell 2007). Southern Interior Reptile and Amphibian Recovery Team.

Accidental mortality may occur during harvesting (including road construction), and habitat is degraded. Unpubl. These two southern subpopulations are interconnected south of the Canadian border. 1980. Hobbs, J., and M.J. Sarell. 2004. Haney, A., and M. Sarell. Unpubl. Victoria, British Columbia. Table 2.

Davis. Final Report. The Great Basin Gophersnake is the largest snake in B.C.

Gophersnakes appear to be attracted to and may linger on the warmth of paved road surfaces (Waye and Shewchuk 2002), increasing susceptibility to roadkill. Research and Monitoring.
1984; Hobbs and Sarell 2000; Ovaska and Sopuck 2004; Rickel 2005; BC Forest Practices Board 2007). Table 1. (2007) reported that 2.7% of motorists in their study in Long Point in Ontario intentionally hit snakes and other reptiles on the road. A good climber and burrower. The rostral scale is as wide as it is long (Stull 1940).

Snake hibernacula and communal denning. Four females tracked by Brown (2006) near Vaseaux Lake were relocated most frequently in shrub-steppe and rock habitat, but habitat availability was not examined.

1997, 1998; Hobbs and Sarell 2000, 2001; BC Ministry of Water, Land and Air Protection 2004; Haney and Sarell 2007).

Factors influencing the road mortality of snakes on the Upper Snake River Plain, Idaho. 2002. 1-33 pp. Web site: http://www.env.gov.bc.ca/soe/et07/06_ecosystems/technical_paper/ecosystems.pdf [accessed May 2012].

2004.

However, there are no robust population estimates for the species in Canada. An assessment of wildlife road casualties – the potential discrepancy between numbers counted and numbers killed.

Forty-one snakes were captured in 2009, 17 in 2010 (including one individual marked in 2009), and 47 in 2011 (including 4 marked individuals). In hot summer it transfers its activity phase in the cooler morning and evening/night hours. Affects all three large portions of the species’ range.

Diller, L.V., and D.R. Map of the Canadian range of the Great Basin Gophersnake.

2001; Osoyoos: 934 ± 185 m, Shewchuk 1996; South Okanagan: 357 m, Williams and Bishop 2011; 520 ± 25 m, Williams et al. BC Grasslands mapping project: a conservation risk assessment. Conner, and R.R. Populations of some prey species may be increased by agriculture, but the lack of cover in cultivated fields restricts gophersnake foraging to field edges (Diller and Johnson 1982).

Some low elevation harvesting may actually improve habitat, provided there is no silviculture so that the area remains as a grassland or parkland.

Gophersnakes are difficult to survey because they spend much of their time underground. Slumping has been noted in two areas within the gophersnake’s range in, Regional District of Okanagan – Similkameen.

report prepared for Terasen Gas, Vancouver, British Columbia. 2012. 2001; Lomas et al. 2001. Kenney, and V.M.

Parker and Brown (1980) reported that juveniles in Utah generally arrived at communal hibernacula later than adults and suggested that juveniles that travel to communal hibernacula may be more vulnerable to predation than those that hibernate close to their natal site. Sarell, M.J., S. Robertson, and A. Haney. On the head there is a black stripe from the angle of the jaw to the eye, sometimes, too, a stripe between the eyes. 2013) provided an IAO value of 504 km2 based on 4 km2 grid cells on occurrences in their database. 2003. Alle Rechte vorbehalten.

2012). However, these studies provide few data on age at first reproduction, population densities and structure, survival, and dispersal. 1996. Dens were rarely revisited by researchers after their use by at least one snake species had been confirmed, as many dens are difficult to access. The maximum recorded total length is 5.75 feet (175 cm). Effects of off-road vehicles on reproductive success of pine snakes (Pituophis melanoleucus) in the New Jersey pinelands. Poulin, D.E.

Haras, W. 2005. Technical Bulletin 03-3. government representatives likewise predict a continuing decline. The belly is white to yellowish with small black spots to the scales on the back. Stebbins (2003) describes the Great Basin Gophersnake’s range as extending from southern B.C.

The severity is higher because a commercial/industrial development can be more destructive. How quickly are road-killed snakes scavenged?
Gophersnakes spend considerable periods underground or under cover. Gophersnakes were observed at 2 of the dens, both in the Ponderosa Pine biogeoclimatic zone. The body scales are keeled, and the head has a pointed shape. The effectiveness of road cruises in detecting snakes is dependent on road densities, traffic loads, carcass persistence, weather and lighting conditions, and surveyor experience (deGregorio 2011; Sullivan 2012). The gopher snakes and bull snakes are subspecies of the Northern Pine Snake. Pike, and R. Shine. Searchers traversed the survey areas while watching and listening for snakes, turning over and replacing cover objects, and paying special attention to any potential habitat features such as rock fissures and crevices.

2007. 2011; Slater 2002).

UBC Press, Vancouver, British Columbia. This is pure fable.

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