Warning This Web page has been archived on the Web.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards, as per the Policy on Communications and Federal Identity.

Skip booklet index and go to page content

COSEWIC Assessment and Update Status Report for the Western Rattlesnake (Crotalus oreganus) in Canada

COSEWIC

Assessment and Update Status Report

on the

Western Rattlesnake

Crotalus oreganus

in Canada

Western Rattlesnake

Threatened 2004

COSEWIC
Committee on the Status of Endangered Wildlife in Canada



COSEPAC
Comité sur la situation des espèces en péril au Canada

COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk. This report may be cited as follows:

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). A production note will be provided if additional information on the status report history is required.

COSEWIC 2004. COSEWIC assessment and status report on the western rattlesnake Crotalus oreganus in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi + 26 pp.

Didiuk, A.B., J.M. Macartney and L.A. Gregory. 2004. COSEWIC status report on thewestern rattlesnake Crotalus oreganusin Canada, in COSEWIC assessment and status report on the western rattlesnake Crotalus oreganus in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. 1-26 pp.

Production note:

  1. The report was overseen and edited by Ron Brooks, COSEWIC Co-chair (Reptiles) Amphibians and Reptiles Species Specialist Subcommittee.
  2. In Crother et al. (2000), which COSEWIC has used as the basis for all reptile nomenclature, this snake is called the Northern Pacific rattlesnake, Crotalus viridis oreganus. A second subspecies of C. viridis in Canada was C. viridis viridis, the prairie rattlesnake. Currently, these two subspecies have been elevated to species: C. oreganus, the western rattlesnake and C. viridis, the prairie rattlesnake (Pook et al. 2000; Ashton and de Queiroz 2001; Douglas et al. 2003). The subspecies of the western rattlesnake found in Canada is C. o. oreganus (Holbrook 1840), the Northern Pacific rattlesnake. As it is the only subspecies of C. oreganus found in Canada, COSEWIC designates it by the current species name, the western rattlesnake, Crotalus oreganus.

 

For additional copies contact:

COSEWIC Secretariat
c/o Canadian Wildlife Service
Environment Canada
Ottawa, ON

K1A 0H3
Tel.: 819-953-3215
Fax: 819-994-3684
COSEWIC E-mail
COSEWIC Website

 

Également disponible en français sous le titre Ếvaluation et Rapport de situation du COSEPAC sur le spatulaire (Polyodon spathula) au Canada – Mise à jour.

Cover illustration:
Western rattlesnake -- Sarah Ingwersen, Aurora, Ontario

©Her Majesty the Queen in Right of Canada 2004
Catalogue No. CW69-14/383-2004E-PDF
ISBN 0-662-37311-1
HTML: CW69-14/383-2004E-HTML
0-662-37312-X

Table of Contents