HOME >> BIOLOGY >> NEWS
Ocean temperature predicts spread of marine species

mmercially important or invasive species, O'Connor said. "For many animals, the larval phase is the only chance for babies to get away from parents. Dispersal prevents inbreeding; for some species, this is a time to move from breeding ground to habitat where they'll mature," she said.

But less than 1 percent of larvae survive dispersal. They are consumed by predators, encounter harsh environments or never reach their destination and starve. For endangered species, survival of some animals may depend on whether offspring from parents in one protected area can get to another area where they are safe from harvest. "In warmer waters, marine protected areas may need to be closer together than in colder water, since in warmer water dispersal distances tend to be shorter," O'Connor said.

While a one degree increase in temperature at the ocean surface means larvae will travel a shorter distance in warm seas, the effect is more severe when temperatures are below about 59 degrees Fahrenheit (15 degrees Celsius), O'Connor said. Along California's coast, sea surface temperature may warm from 53 degrees to 59 degrees Fahrenheit during an El Nino year, when a warm ocean current appears in the equatorial Pacific Ocean. Larvae that travel 62 miles at 53 degrees Fahrenheit would disperse only 46 miles at 59 degrees.

"On the up side, shorter dispersal can mean greater survival because the larvae spend less time in the water, where they are at a high risk of death. On the down side, it could mean they won't travel as far and may not make it to their juvenile habitat," O'Connor said.

The researchers suspect temperature plays an important role in larval dispersal because metabolic processes in larvae are sensitive to temperature and similar among species. Consequently, larvae in cold waters develop more slowly and drift further before beginning their next development stage because colder temperatures cause sluggish metabolisms.


'"/>

Contact: Becky Oskin
becky_oskin@unc.edu
919-962-8596
University of North Carolina at Chapel Hill
25-Dec-2006


Page: 1 2

Related biology news :

1. West African Ocean sediment core links monsoons to global climate evolution
2. Climate change signal detected in the Indian Ocean
3. Ocean observing contracts awarded to UC San Diego and University of Washington
4. Oceans twilight zone may be a key to understanding climate change
5. AAAS Oceans Panel examines advances in science and technology to boost fishery sustainability
6. Ocean governance: Evolving systems
7. Scientists discover new life forms in the Arctic Ocean
8. New study links western wildfires to Atlantic Ocean surface temperatures
9. Ocean sampling yields environmental sources of coral symbionts
10. Continued warming of the Arctic Ocean
11. Ocean seep mollusks may share evolutionary history with other deep-sea creatures

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/22/2017)... LONDON , Feb. 22, 2017 ... by 2021, ABI Research identifies four technologies that ... solutions to secure significant share in the changing ... payments, and passive authentication.   "Companies ... it comes to security," says Dimitrios Pavlakis ...
(Date:2/13/2017)... 2017  RSA Conference -- RSA, a Dell Technologies ... to enhance fraud detection and investigation across digital ... Fraud & Risk Intelligence Suite. The new platform ... insights from internal and external sources as well ... customers from targeted cybercrime attacks. "Fraudsters ...
(Date:2/8/2017)... (NASDAQ: AWRE ), a leading supplier of biometrics ... and year ended December 31, 2016. Revenue ... to $6.9 million in the same quarter last year. Operating ... compared to $2.6 million in the fourth quarter of 2015. ... million, or $0.02 per diluted share, which compares to $1.8 ...
Breaking Biology News(10 mins):
(Date:3/1/2017)... 2017  Elizabeth Young and Joshua Rosenthal , ... Washington University,s Health Workforce Speaker series. http://bit.ly/2lA6C8B ... will be speaking on March 9, 2017 at the ... Washington, DC at 12:00pm. The ... renowned speakers to examine new workforce configurations, their outcomes ...
(Date:2/28/2017)... ... February 28, 2017 , ... ... Inc. (Newark, DE) have formed a strategic partnership to develop and market ... renewable energy laboratories. These automated testing solutions will save analysis time and ...
(Date:2/28/2017)... and REYKJAVIK, Iceland , Feb. ... AppTec group company and the contract genomics organization enabling ... officer Hannes Smarason has been appointed as the company,s chief ... Long and Alex Fowkes have been named ... "WuXi NextCODE is executing on its vision to enable ...
(Date:2/28/2017)... (PRWEB) , ... February 28, 2017 , ... ... to their function as well as to their processing and transport properties. With ... on a wide variety of samples. The Litesizerâ„¢ 100 gives rapid and accurate ...
Breaking Biology Technology:
Cached News: