Navigation Links
Irukandji threat to southern waters
Date:10/28/2013

A Griffith University led study has made the surprising discovery that ocean acidification may provide some protection for South East Queenslanders from the Irukandji jellyfish.

Researchers from Griffith University's Australian Rivers Institute have conducted a series of climate change simulation experiments to investigate whether the dangerous tropical jellyfish, the Irukandji, is likely to establish breeding populations in the South East.

It was found that while higher sea temperatures could provide an opportunity for adult Irukandji to expand their range south, increasing ocean acidification may inhibit the development of juveniles.

The research is the first step towards assessing if Irukandji pose a significant threat to tourism and human health in the South East. The findings have been published in the journal Global Change Biology.

Lead author, Griffith PhD student Shannon Klein said concerns have arisen from evidence world-wide that tropical marine species are moving towards the poles as oceans warm.

"Increasing ocean temperatures and strengthening boundary currents have caused the poleward migration of many marine species," Shannon Klein said.

"These effects of climate change are particularly apparent on the eastern coast of Australia. Over the past 60 years the East Australian Current (EAC) has strengthened and now delivers warmer tropical waters further south by as much as 350km."

As a consequence at least five species of tropical fish that occur on the Great Barrier Reef (GBR) are predicted to be able of survive winter temperatures in waters off Sydney by 2080. Among all species that could potentially expand their range south, the Irukandji would arguably have one of the greatest socio-economic impacts.

Irukandji have historically been limited to waters north of Gladstone, however in 2007 an adult specimen was recorded for the first time as far south as Hervey Bay.

"What we needed to find out was if the Irukandji would be able to establish their entire lifecycle south of their historical range in these expanded reaches of warm water or if adults only are able to drift south on the strengthened current," Shannon said.

As it turns out the role of ocean acidification in limiting reproduction may hold the key to protecting the SE Queensland coastline. But we may not be out of hot water just yet.

"This response may reduce the likelihood of Irukandji jellyfish establishing permanent populations in South East Queensland in the long term, however, it is possible that they could migrate farther south in the short term if acidification proceeds slowly and appropriate reproduction habitats are available.

"But even if juvenile populations remain confined to more northerly waters there is still the strengthening EAC which could carry adults south."

Irukandji jellyfish are represented by at least six species of cubozoan jellyfish which occur throughout the world's tropical zones, so the implications of this study are far reaching.

"Our results suggest that, if other Irukandji species behave similarly, range expansions could be occurring in other regions around the globe," Shannon said.


'/>"/>

Contact: Helen Wright
helen.wright@griffith.edu.au
047-840-6565
Griffith University
Source:Eurekalert

Related biology news :

1. Commonly used herbicides seen as threat to endangered butterflies
2. Global warming threat to coral reefs: Can some species adapt?
3. Glacier-fed river systems threatened by climate change
4. EPA to highlight innovative ways to detect and respond to biological threats
5. Heightened Security Threats and Economic Issues Provide Fillip to Global Civil and Military Biometrics Market, Says Frost & Sullivan
6. Extreme weather threatens rich ecosystems
7. Is rainfall a greater threat to Chinas agriculture than warming?
8. CU research shows warming climate threatens ecology at mountain research site west of Boulder
9. Scientists find Achilles heel in life-threatening malaria parasites
10. Beetle-fungus disease threatens crops and landscape trees in Southern California
11. Loss of biodiversity increasingly threatens human well-being: UBC, University of Michigan research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/2/2017)... , Feb. 2, 2017  EyeLock LLC, a market ... new white paper " What You Should Know About ... of ensuring user authenticity is a growing concern. In ... of users. However, traditional authentication schemes such as username/password ... Biometric authentication offers an elegant solution to the ...
(Date:2/1/2017)... IDTechEx Research, a leading provider of independent market research, business ... new report, Sensors for Robotics: Technologies, Markets and Forecasts 2017-2027 ... ... Revenues of ... for Robotics: Technologies, Markets and Forecasts 2017-2027: Machine vision, force sensing ...
(Date:1/30/2017)... , Jan. 30, 2017   Invitae Corporation ... growing genetic information companies, today announced that it will ... and provide 2017 guidance on Monday, February 13, 2017, ... that day at 4:45 p.m. Eastern / 1:45 p.m. ... team will briefly review financial results, guidance, and recent ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... Toronto, ON (PRWEB) , ... February 22, 2017 ... ... focused on discovery and development of precision treatments for neurodegenerative diseases, today announced ... trials validate the ProMIS approach.” This is one of a series of commentaries ...
(Date:2/22/2017)... ... February 22, 2017 , ... LabRoots , the leading provider of educational ... is pleased to announce the launch of a new scholarship for young scientists seeking ... This merit-based scholarship is open to all high school seniors, 17 years or older; ...
(Date:2/22/2017)... DES MOINES, Iowa , Feb. 22, 2017 Origin ... an agricultural biotechnology trait and seed provider, and Arcadia ... -based company that develops and commercializes agricultural productivity traits and ... of a key corn biotechnology product developed in China ... completion of global regulatory trials. ...
(Date:2/22/2017)... ... February 22, 2017 , ... NDA Partners Chairman Carl ... Deputy Director in the FDA CDRH Division of Cardiovascular, Respiratory, and Neurological Devices ... as an Expert Consultant. , In Dr. Spyker’s accomplished career, he held positions ...
Breaking Biology Technology: