COSEWIC assessment and update status report on the fin

0,92

MB

whale Balaenoptera physalus in Canada

44

stron

4830

ID

Committee on the Status of Endangered Wildlife in Canada

2005

rok

TABLE OF CONTENTS

SPECIES INFORMATION.3

Name and classification.3

Description.3

DESIGNATABLE UNITS.5

DISTRIBUTION.5

Global range and stock structure.5

Canadian range .8

HABITAT.12

Habitat requirements .13

Trends . 13

Habitat protection/ownership .13

BIOLOGY14

Reproduction .14

Survival14

Species characteristics and physiology . 15

Migration15

Diet composition 16

Inter-specific interactions .17

Adaptability 17

POPULATION SIZES AND TRENDS17

LIMITING FACTORS AND THREATS 19

Limiting factors.19

Threats 20

SPECIAL SIGNIFICANCE OF THE SPECIES 22

EXISTING PROTECTION OR OTHER STATUS DESIGNATIONS 23

SUMMARY OF STATUS REPORT.24

TECHNICAL SUMMARY – Atlantic population .25

TECHNICAL SUMMARY – Pacific population.27

ACKNOWLEDGEMENTS AND AUTHORITIES CONTACTED.29

INFORMATION SOURCES 29

BIOGRAPHICAL SUMMARY OF REPORT WRITER . 37

COLLECTIONS EXAMINED .37