The blue racer has been on Ontario's Endangered Species List since 1971 (see Existing Protection or Other Status below) consequently, habitat determined to be critical to the snake's persistence is protected (from destruction or significant alteration) under Ontario's Endangered Species Act (ESA). 2000, Conant & Collins 1991) agree that the subspecies C.c. flaviventris (the yellow-bellied racers), most recent authorities (Harding 1997, Crother et al. data).Īlthough there has been some controversy regarding the designation of C.c.
#Coluber constrictor foxii mich full#
Unlike adults, hatchlings and yearlings (first full active season) have dorsal blotches that fade completely by the third year however, juvenile patterning is still visible on the venter until late in the snake's third season (Porchuk et al.
They also have characteristic black masks, relatively large eyes, and often have brownish-orange rostral scales (snouts). Blue racers often have creamy white ventral scales, dull grey to brilliant blue lateral scales, and pale brown to dark grey dorsums (Porchuk 1996). The largest documented specimen captured on Pelee Island was 138 cm SVL. The blue racer is one of Ontario's largest snakes, reaching lengths of 90 cm to 152 cm snout-to-vent length (SVL Conant and Collins 1991). The Canadian Wildlife Service, Environment Canada, provides full administrative and financial support to the COSEWIC Secretariat. Species designated at meetings of the full committee are added to the list.Ĭanadian Wildlife Service Service canadien de la faune
In 1978, COSEWIC designated its first species and produced its first list of Canadian species at risk. It arose from the need for a single, official, scientifically sound, national listing of wildlife species at risk. The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) was created in 1977 as a result of a recommendation at the Federal-Provincial Wildlife Conference held in 1976. *** : Formerly described as “Indeterminate” from 1994 to 1999 or “ISIBD” (insufficient scientific information on which to base a designation) prior to 1994.
** : Formerly described as “Not In Any Category”, or “No Designation Required.” * : Formerly described as “Vulnerable” from 1990 to 1999, or “Rare” prior to 1990. Not at Risk (NAR)* : A species that has been evaluated and found to be not at risk.ĭata Deficient (DD)*** : A species for which there is insufficient scientific information to support status designation. Special Concern (SC)* : A species of special concern because of characteristics that make it particularly sensitive to human activities or natural events. Threatened (T) : A species likely to become endangered if limiting factors are not reversed. Species: Any indigenous species, subspecies, variety, or geographically defined population of wild fauna and flora.Įxtinct (X) : A species that no longer exists.Įxtirpated (XT) : A species no longer existing in the wild in Canada, but occurring elsewhere.Įndangered (E) : A species facing imminent extirpation or extinction. Committee on the Status of Endangered Wildlife in Canada. COSEWIC status report on the blue racer Coluber constrictor foxii in Canada.
#Coluber constrictor foxii mich update#
Update COSEWIC status report on the blue racer Coluber constrictor foxii in Canada, in COSEWIC assessment and update status report the blue racer Coluber constrictor foxii in Canada. COSEWIC assessment and update status report the blue racer Coluber constrictor foxii. A production note will be provided if additional information on the status report history is required.ĬOSEWIC 2002. Please note: Persons wishing to cite data in the report should refer to the report (and cite the author(s)) persons wishing to cite the COSEWIC status will refer to the assessment (and cite COSEWIC). COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk.
0 kommentar(er)
