Hungry penguins target jellyfish that have large gonads, scientists discover

'We were surprised to see the penguins go for jellyfish'

Emily Beament
Tuesday 27 December 2016 01:08
Comments
The secret life of penguins

Adelie penguins target jellyfish with prominent gonads for a tasty meal, research from Antarctic "penguin cams" suggests.

Footage shows the penguins occasionally feeding on jellyfish with visible sex glands, even when their preferred food of small shrimp-like crustaceans known as krill are available, the study backed by conservation charity WWF found.

The findings, revealed in a new publication by scientists from the French and Japanese national Antarctic programmes, come from research conducted by fitting penguins with tiny cameras to see what they got up to under the sea ice.

The cameras weighed between 15g and 22g - less than an ounce - and were retrieved when the birds returned to the nest.

Footage filmed by the penguin cams was released last December when it became an internet sensation, WWF said.

It is thought the penguins, the smallest and most widespread in the Antarctic, target the jellyfish with prominent gonads because the carbon and protein content of the reproductive organs is greater than any other part of the creature.

Jean-Baptiste Thiebot from the National Institute of Polar Science, Japan, said: "We were surprised to see the penguins go for jellyfish and it raised the question: is this new behaviour for Adelie penguins, possibly developed because they had a hard time finding food during this year of very unusual sea-ice conditions, or is it simply newly revealed by using this video approach to study their diet?

"To clarify this, we will need to see comparisons across different penguin species and different ocean regions.

"But these observations already reveal one more piece of the puzzle in the oceans' food web."

Information gathered from the research is being used by the wildlife charity to help create marine protected areas around Antarctica, to protect species such as the Adelie penguin, which is affected by fishing in the region and climate.

King Penguin 'Sir Nils Olav' Inspects Norwegian Soldiers and Gets Military Promotion

Rod Downie, WWF polar programme manager, said: "A year on from the release of the penguin cam footage, it's clear that we still have a lot to learn about Adelie penguins and other ice species.

"The results give us a better understanding of how they might respond to climate change and related shifts in the Antarctic food web."

Studies such as the penguin cam research will help international efforts to protect the "amazing waters" around Antarctica, he said.

Press Association

Register for free to continue reading

Registration is a free and easy way to support our truly independent journalism

By registering, you will also enjoy limited access to Premium articles, exclusive newsletters, commenting, and virtual events with our leading journalists

Please enter a valid email
Please enter a valid email
Must be at least 6 characters, include an upper and lower case character and a number
Must be at least 6 characters, include an upper and lower case character and a number
Must be at least 6 characters, include an upper and lower case character and a number
Please enter your first name
Special characters aren’t allowed
Please enter a name between 1 and 40 characters
Please enter your last name
Special characters aren’t allowed
Please enter a name between 1 and 40 characters
You must be over 18 years old to register
You must be over 18 years old to register
Opt-out-policy
You can opt-out at any time by signing in to your account to manage your preferences. Each email has a link to unsubscribe.

By clicking ‘Create my account’ you confirm that your data has been entered correctly and you have read and agree to our Terms of use, Cookie policy and Privacy notice.

This site is protected by reCAPTCHA and the Google Privacy policy and Terms of service apply.

Already have an account? sign in

By clicking ‘Register’ you confirm that your data has been entered correctly and you have read and agree to our Terms of use, Cookie policy and Privacy notice.

This site is protected by reCAPTCHA and the Google Privacy policy and Terms of service apply.

Register for free to continue reading

Registration is a free and easy way to support our truly independent journalism

By registering, you will also enjoy limited access to Premium articles, exclusive newsletters, commenting, and virtual events with our leading journalists

Already have an account? sign in

By clicking ‘Register’ you confirm that your data has been entered correctly and you have read and agree to our Terms of use, Cookie policy and Privacy notice.

This site is protected by reCAPTCHA and the Google Privacy policy and Terms of service apply.

Join our new commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in