Swiss Researchers Advocate Natural Reproduction in Zoos

University of Zurich scientists propose controversial shift from contraception to natural breeding and culling in zoo population management, citing concerns over aging animal populations.

Key Takeaways

University of Zurich researchers are proposing a shift from contraception to natural reproduction and culling in zoos.
Current contraceptive methods are leading to aging zoo populations, threatening long-term sustainability.
Culled animals could be used as food for predators, improving the carbon footprint of zoos.

By The Numbers

PNAS

Journal Publication

January 8, 2025

Date of Announcement

They Said

"What we don’t need is a collection of geriatric animals and veterinarians preoccupied with palliative care."
— Andrew Abraham

"Allowing animals to reproduce naturally and culling surplus animals."
— University of Zurich Researchers

Shattering the Contraception Consensus

The Geriatric Trap

Ecological Integrity Over Sentimentality

Confronting the Public Eye

Sources & References

Zoos should consider culling surplus animals to regulate populations, say researchers

SWI swissinfo.ch

Key Takeaways

University of Zurich researchers are proposing a shift from contraception to natural reproduction and culling in zoos.
Current contraceptive methods are leading to aging zoo populations, threatening long-term sustainability.
Culled animals could be used as food for predators, improving the carbon footprint of zoos.

By The Numbers

PNAS

Journal Publication

January 8, 2025

Date of Announcement

They Said

"What we don’t need is a collection of geriatric animals and veterinarians preoccupied with palliative care."
— Andrew Abraham

"Allowing animals to reproduce naturally and culling surplus animals."
— University of Zurich Researchers

Key Takeaways

By The Numbers

They Said

Shattering the Contraception Consensus

The Geriatric Trap

Ecological Integrity Over Sentimentality

Confronting the Public Eye

Sources & References

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