Please note, this National Red List website contains a subset of data whilst we transition to national focal point driven data uploads. We thank you for your patience with this and welcome national contributors to get in touch to update their national dataset. Terms of Use including citation guidance are found here.

The previous dataset is available via: https://archive.nationalredlist.org/. This site is no longer updated but can help with most enquiries whilst we focus on redevelopment.

NRLD - 93845 | Balaenoptera borealis

Assessment ID
93845
Taxon name
Balaenoptera borealis
Lesson, 1828
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Balaenoptera borealis
Lesson, 1828
Common name(s)
Sei Whale (English), Rorqual boréal (Français)
Assessed taxon level
Population
Higher level taxonomic groupings
Vertebrates
Mammals
Kingdom
Animalia
Phylum
chordata
Class
mammalia
Order
cetacea
Family
balaenopteridae
Genus
Balaenoptera
Species
borealis
Species authority
Lesson, 1828
Taxonomic notes and synonyms listed
Atlantic population
Location and scope
Specific locality or subnational name or regional name
Canada
Scope (of the Assessment)
National
Countries included within the scope of the assessment
Canada
Country ISO code(s)
CAN
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Threatened; Menacée
Criteria system used
Modified IUCN

(see Assessment details)

Assessment rationale/justification
This species is seen off Nova Scotia and Newfoundland. However, data are lacking to determine the degree of depletion caused by whaling, or to assess current population size, or to determine whether the population has recovered in any way since whaling ended. The effects of current threats, especially oil and gas exploration and development, are unknown. There is also uncertainty regarding possible population substructure.; Cette espèce est observée au large de la Nouvelle-Écosse et de Terre-Neuve. Cependant, il n'y a pas suffisamment de données permettant de déterminer l'ampleur de l'appauvrissement provoqué par la pêche à la baleine ou d'évaluer la taille actuelle de la population ou de déterminer si la population s'est rétablie de quelque manière que ce soit depuis la fin de la pêche à la baleine. Les incidences des menaces actuelles, notamment de l'exploration et de la mise en valeur du pétrole et du gaz, sont inconnues. La sous-structure démographique possible est également incertaine.
Assessment details
Year assessed
2003
Assessors/contributors/reviewers listed
Committee on the Status of Endangered Wildlife in Canada. Environment Canada.
Criteria system used
Modified IUCN
Reference for methods given
COSEWIC- Committee on the Status of Endangered Wildlife in Canada (2003)
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
Atlantic Ocean
Is there a map available in assessment?
Not_assigned
Habitat and systems
Ecological system type
Terrestrial
Not_assigned
Freshwater
Not_assigned
Marine
Not_assigned
Threats and conservation measures listed
Threats listed in assessment
No information available
History
Species considered in May 2003 and placed in the Data Deficient category.; Espèce étudiée en mai 2003 et classée dans la catégorie ' données insuffisantes '.
Publication
COSEWIC. 2003. Canadian Wildlife Species at Risk. Committee on the Status of Endangered Wildlife in Canada. Web site: https://www.canada.ca/en/services/environment/wildlife-plants-species/species-risk.html