Euderma maculatum | COSEWIC- Committee on the Status of Endangered Wildlife in Canada (2004)

Taxa
Euderma maculatum | (J.A. Allen, 1891)
Euderma maculatum | J. A. Allen, 1891
NRL Record ID
95914
Location
Countries in Assessment
Canada
Country ISO code(s)
CAN
Does the assessment cover a marine EEZ area(s)?
Off
Scope (Assessment)
National
Taxon
Common Names
Spotted Bat (English)
Oreillard maculé (Français)
Taxonomic Group
Vertebrates
Taxonomic Group Level 2
Mammals
Taxon distribution as listed in assessment
British Columbia
Habitats and Ecology
Ecological system type
Terrestrial system
No
Freshwater system
No
Marine system
No
Is there a map available in assessment?
Not_assigned
Assessed status
Asessment status in full
Special Concern; Préoccupante
Assessment rationale/justification
In Canada, this species occurs in the intermontane grasslands and ponderosa pine woodlands of southern British Columbia. It is a distinctively coloured bat that is unmistakable to identify. Unlike any other Canadian species of bat, its echolocation calls are within the range of human hearing. It roosts in crevices in large cliff faces. It is considered the easiest to count and best censused species of bat in Canada. Population estimates, based on relatively good census effort, suggests that there are fewer than 1000 adults. At this time, numbers appear to be stable, and there are relatively few threats to populations or habitats. Perhaps the biggest threat to this species is its small population size. Use of pesticides on its insect prey, loss of foraging habitat, and disturbance at roosting sites by rock climbers are potential threats. Rescue may be possible from neighbouring populations in the United States, however, movements of individuals between Canadian and US populations are not documented.; Au Canada, cette espèce se trouve dans les terres herbeuses et les terrains boisés de pins ponderosa du sud de la Colombie-Britannique. Il s'agit d'une chauve-souris de couleur distincte, ce qui permet de l'identifier sans aucun doute. Contrairement à  toute autre espèce de chauve-souris au Canada, les cris d'écolocation de cette espèce peuvent être entendus par l'être humain. Cette espèce se repose dans les crevasses de grandes falaises. Cette espèce est considérée comme l'espèce de chauve-souris la plus recensée et la plus facile à  dénombrer au Canada. Les estimations de populations, fondées sur des recensements relativement fiables, suggèrent qu'il existe moins de 1000 adultes. à‚¬ l'heure actuelle, les nombres semblent stables, et relativement peu de menaces pèsent sur les populations ou les habitats. La plus grave menace pour cette espèce est possiblement la petite taille de sa population. L'utilisation de pesticides sur des insectes qui sont ses proies, la perte de son habitat d'alimentation et la perturbation dans ses sites de repos par des alpinistes sont des menaces possibles. Une immigration de populations avoisinantes aux États-Unis est possible; cependant, le déplacement des individus entre les populations canadiennes et américaines n'a pas été documenté.
About the assessment
Assessment year
2004
Assessors/contributors/reviewers listed
Committee on the Status of Endangered Wildlife in Canada. 2008. Environment Canada.
Affliation of assessor(s)/contributors/reviewers listed on assessment
NGO
Government
Assessor affiliation specific
Government|NGO
Criteria system
Criteria system specifics
Committee on the Status of Endangered Wildlife in Canada (COSEWIC) Assessment
Criteria system used
Modified_IUCN
Criteria Citation
COSEWIC- Committee on the Status of Endangered Wildlife in Canada (2004)
Endemism
Endemic to region
Not_assigned
Endemism Notes
Is an endemic?: Not_assigned
Conservation
Threats listed in assessment
No information available
Conservation Measures

Conservation measures:
Conservation measures notes:
Required conservation measures:

Further information
Redlist Notes

The estimated Canadian population (< 1000 adults) met criterion for Threatened, D1, but the species was designated Special Concern because there is a possibility of rescue effect from neighbouring populations in the United States. Foraging and roosting habitats appear to be secure in Canada.

History
Designated Special Concern in April 1988. Status re-examined and confirmed in May 2004.; Espèce désignée ' préoccupante ' en avril 1988. Réexamen et confirmation du statut en mai 2004.
Scientific Name Kingdom Phylum Class Order Family Genus
Euderma maculatum Animalia Chordata Mammalia Chiroptera Vespertilionidae Euderma
Euderma maculatum Animalia Chordata Mammalia Chiroptera Vespertilionidae Euderma