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Deathly Silent: Exploring the Global Lack of Data Relating to Stranded Cetacean Euthanasia
Rebecca M Boys1, Ngaio J Beausoleil2, Emma L Betty1
1Cetacean Ecology Research Group, School of Natural and Computational Sciences, College of Sciences, Massey University, Private Bag 102-904, Auckland 0632, New Zealand.
Animals : an Open Access Journal From MDPI
|June 2, 2021
Summary
Euthanasia for stranded cetaceans lacks consistent methods and data. This study reveals significant knowledge gaps in current cetacean euthanasia practices, emphasizing the need for improved data collection to enhance animal welfare.
Area of Science:
- Veterinary Medicine
- Marine Biology
- Animal Welfare Science
Background:
- Stranded cetaceans frequently require euthanasia due to their compromised condition.
- Current euthanasia methods for cetaceans exhibit significant variability in knowledge and implementation.
- There is a scarcity of data regarding the practical aspects and welfare implications of these procedures.
Purpose of the Study:
- To evaluate existing published data on cetacean euthanasia.
- To identify critical knowledge gaps in the field.
- To provide guidance for improving the welfare of stranded cetaceans.
Main Methods:
- A comprehensive review of 2147 peer-reviewed articles on marine mammal euthanasia.
- Analysis of euthanasia reports submitted to the International Whaling Commission (IWC) from the UK and New Zealand (2007-2020).
- Assessment of reported methods and time to death/insensibility (TTD).
Main Results:
- Only 3.1% of reviewed articles detailed euthanasia methods; 91% used chemical means.
- Euthanasia method details were available for 78.3% (UK) and 100% (NZ) of reported cases.
- Data on time to death/insensibility were severely limited, with TTD reported for only 0.5% of articles, but 35% (UK) and 98% (NZ) of individuals, though assessment methods were often unclear.
Conclusions:
- Significant deficiencies exist in the available information on cetacean euthanasia.
- There is a pressing need for enhanced data collection regarding euthanasia procedures.
- Implementing standardized and appropriate methods is crucial for improving stranded cetacean welfare.
