An American who fell in love with both the Great Barrier Reef and his wife via The University of Queensland has led a breakthrough discovery that could protect one of the Seven Natural Wonders. Husband-and-wife Professor Bernard Degnan and Associate Professor Sandie Degnan, believe they, along with research colleagues, can use the powers of attraction to decimate one of the reef's fiercest enemies.
In esteemed journal Nature , the international research team has revealed crown-of-thorns starfish gather en masse due to a release of pheromones -- a scent they've decoded so the prickly pests can be lured to their capture.
"They feast on the coral and leave it bleached white and vulnerable to destruction in heavy storms.
"Now we've found the genes the starfish use to communicate, we can begin fabricating environmentally safe baits that trick them into gathering in one place, making it easier to remove reproductively-primed animals."
The Degnans worked alongside a team of UQ researchers, and long-standing colleagues at the Australian Institute of Marine Science (AIMS), the Okinawa Institute of Science and Technology (OIST) and University of the Sunshine Coast (USC). The painstaking process of sequencing the of crown-of-thorns genome and its pheromones was completed 30 years after Professor Degnan moved from his hometown of New York to Brisbane to study as one of UQ's first international exchange students.
A graduate in Marine Biology and Molecular Biology, Professor Degnan developed an early fascination with the biodiversity of Queensland's Great Barrier Reef in his formative years, and while at UQ's Heron Island Research Station he met his future wife.
"I guess there is a nice story there about the reef bringing us together and now we're working hard to develop novel ways to understand and preserve it," Professor Bernard Degnan said.
"But beyond us, there's personal history with some of the other researchers, like Mike Hall at AIMS who is one of our oldest colleagues and who came up with the original genome concept.
"Nori Satoh at OIST could be considered the grandfather of marine genomics and has been a very supportive friend, as has Scott Cummins of USC, who was a former research fellow in my lab."
"What I like most is that we're finding a solution to a problem, not merely documenting it."
They say a similar approach could be used to combat invasions of sea snails and other marine pests throughout the world.
"I expect for local economies there could be some positive cash flow from the fishermen that collect and remove the crown-of-thorns.," Professor Bernard Degnan said.
The crown-of-thorns research is available in full via the Nature journal.
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Nature