Penguins come together

Penguins come together

Read the Open Access article here

A new research project has found that two different groups of Little Penguins have met up to live in a colony together—despite a history of isolation.

Dr Chris Burridge, University of Tasmania Zoology Lecturer, said the motivation of the research was to understand rates of movements of penguins between colonies.

The research was conducted in partnership with the University of Tasmania, Peter Dann (Phillip Island Nature Park), Amanda Peucker (Deakin University) and Craig Styan (University College London).

"The research wanted to find out things like, are individuals from this colony going to another colony to breed?  If a colony was wiped out by a predator, would penguins from other colonies come to help replenish it?" Dr Burridge said.

The study took DNA samples from penguins from colonies throughout Australia and cross-checked them against one another.

"If you look at the genes and the frequency of those genes at colonies throughout Australia, you can then work out how much movement there has been of those penguins; when an animal moves between colonies, it takes it's genes with it. This tells us about how the different colonies interact."

Dr Burridge's earlier research found that in South East Australia there was a lot of penguin movement, with penguins moving between colonies all the time. But when research looked closer to Adelaide, suddenly the colonies were very genetically different over a small region.

"There was no clear explanation as to why in South East Australia penguins would move among colonies a lot, then around Kangaroo Island they don't."

The researchers considered factors like oceanographic fronts and the timing of penguin breeding, which varies throughout Australia. But none of these explanations made sense.

By sampling further across to Western Australia, researchers found there were two groups of penguins around Kangaroo Island that had come together and were mixing.

"The results are suggesting the fine spatial genetic structure around Kangaroo Island is the result of two lineages of penguins that have come back together and they're mixing in that part of the world.

"For some reason they became isolated in the east and the west now they're coming back to occupy that central space.

"The interesting question is, why weren't they there before? Why are they suddenly mixing in that part of the world? Maybe it's something to do with climate? It's something we can't readily answer.

"There are some interesting questions there that we haven't addressed yet. For example, do these eastern and western penguins recognise each other in some way?" Dr Burridge said.

"Do they preferentially mate with their own type or another type? We don't have any evidence for that segregation or choice, but need to investigate further."

About the Journal

Journal of Heredity cover

View Current Issue

Issue 114-3 now online!

Our latest issue includes the Editor's Choice,

by Chase Smith and others

Freely available

and the cover article,

by recent EECG awardee Brock Mashburn and others


Graphical Abstracts

Journal of Heredity is pleased to now offer multimedia graphical abstracts.

Authors can use the free online tool Tidbit to create attractive visuals. Include a graphical abstract with your submission!


AuthorsJournal of Heredity has

  • No page or color charges

  • Free data archiving in Dryad

  • Discounted open access for AGA members

Submit your manuscript

AGA Member Benefits:

  • Free Journal of Heredity access and discounted Open Access
  • Eligibility for awards
  • Discounted symposium registration and access to presentation videos
  • AGA Newsletter
  • Supporting a society that supports your community


Join the AGA or renew your membership

Any questions?  Contact the Managing Editor at


Read the AGA Council's statements on diversity - see About the AGA.