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Home Science News Biology

Fishy parenting? Punishing offspring encourages cooperation

June 18, 2024
in Biology
Reading Time: 3 mins read
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Helper (left) and dominant breeder/parent (right) of Neolamprologus savoryi
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Osaka, Japan — While there is an increasing consensus among humans that corporal discipline of children does more harm than good, fish may disagree.

Helper (left) and dominant breeder/parent (right) of Neolamprologus savoryi

Credit: Osaka Metropolitan University

Osaka, Japan — While there is an increasing consensus among humans that corporal discipline of children does more harm than good, fish may disagree.

Ryo Hidaka, Shumpei Sogawa, Masanori Kohda and Satoshi Awata from Osaka Metropolitan University have demonstrated that a fish species employs physical punishment to elicit helping efforts from their offspring, indicating advanced social and cognitive skills previously thought to be unique to higher vertebrates.

The results of their study were published online in Animal Behaviour on April 6.

For millennia, human societies have used punishment to promote cooperation and maintain social order. But humans are not the only species seeking better cooperative behavior. So how do other animals achieve this?

Seeking an answer, the research team from the Graduate School of Science at Osaka Metropolitan University took a look at a rather taciturn animal: fish, more specifically, Neolamprologus savoryi, a cooperatively breeding cichlid fish.

“Even though punishment in cooperatively breeding cichlid fish has been studied, there is limited evidence that they use punishment to encourage cooperative behavior,” said Satoshi Awata, a professor at Osaka Metropolitan University and lead author of the study.

N. savoryi subordinates, or helpers, assist dominant breeders in, for example, defending territory against intruders or maintaining the breeding shelter. By observing the behavior of N. savoryi in a controlled laboratory setting, the researchers were able to manipulate and measure the effects of punishment on helping behavior.

Their results showed that dominant breeders physically attacked idle helpers — including their own offspring — to promote the latter’s participation in cooperative activities. Indeed, those experiencing such aggression subsequently increased their efforts in helping behaviors. In contrast, helpers who engaged proactively in helping behaviors avoided aggression from dominant breeders.

“Our study demonstrated that nonhuman animals also use punishment to elicit cooperative behaviors in group members,” Awata said.

The study’s findings highlight that punishment is not exclusive to human societies but is also present in how other animals enforce cooperation and maintain social relationships. This research bridges a gap in understanding the evolution of cooperative behavior and the mechanisms animals use to sustain it.

“Our findings reveal that fish, like humans, employ advanced cognitive abilities to sustain their societies. This compels us to reconsider the notion of ‘intelligence’ not only in fish but across the animal kingdom,” Awata said.

###

About OMU 

Established in Osaka as one of the largest public universities in Japan, Osaka Metropolitan University is committed to shaping the future of society through “Convergence of Knowledge” and the promotion of world-class research. For more research news, visit and follow us on social media: X, Facebook, Instagram, LinkedIn.



Journal

Animal Behaviour

DOI

10.1016/j.anbehav.2024.02.020

Method of Research

Experimental study

Subject of Research

Animals

Article Title

Punishment from dominant breeders increases helping effort of subordinates in a cooperatively breeding cichlid

Article Publication Date

6-Apr-2024

COI Statement

The authors declare that they have no competing interests.

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