Featured Research

from universities, journals, and other organizations

Young loggerhead turtles not going with the flow

Date:
August 6, 2014
Source:
PLOS
Summary:
Juvenile loggerhead turtles swim into oncoming ocean currents, instead of passively drifting with them. After loggerhead turtle hatchlings leave nesting beaches, they live in the ocean for 7-12 years before migrating to coastal habitats.

Juvenile loggerhead turtles swim into oncoming ocean currents, instead of passively drifting with them, according to a study published August 6, 2014 in the open-access journal PLOS ONE by Donald Kobayashi from National Oceanic and Atmospheric Administration and colleagues.

Related Articles


After loggerhead turtle hatchlings leave nesting beaches, they live in the ocean for 7-12 years before migrating to coastal habitats. Juvenile loggerhead turtles have good swimming abilities, but scientists aren't sure if they passively drift in ocean currents or actively swim. Combining turtle movement data with ocean circulation models aids scientists in understanding how juvenile turtles orient themselves in response to a current flow. In this study, scientists compared the daily movement over the course of 13 to 350 days of ~40 juvenile loggerhead turtles tracked by satellite with oceanic circulation data from various sources off New Caledonia.

The authors found that the turtles were swimming against the prevailing current in a statistically significant pattern at a rate of 30 cm/sec, which indicates an ability to detect the current flow and orient themselves to swim into the current flow direction. The authors suggest that the turtles likely use multiple sensory cues that enable them to orient and offset displacement due to wind and ocean currents. Additional factors could be taken into consideration for future studies to provide more information about why this swimming pattern exists, to further explore turtle ecology in ocean currents.

"This study provides evidence that these oceanic stages of loggerhead sea turtles studied with satellite tags do not necessarily get passively transported with ocean currents and, further, provides compelling evidence that these turtles are able to resist such transport using some mechanism not yet fully understood. They are apparently able to detect the direction of current flow and swim against the prevailing current," Dr. Kobayashi added.


Story Source:

The above story is based on materials provided by PLOS. Note: Materials may be edited for content and length.


Journal Reference:

  1. Donald R. Kobayashi, Richard Farman, Jeffrey J. Polovina, Denise M. Parker, Marc Rice, George H. Balazs. “Going with the Flow” or Not: Evidence of Positive Rheotaxis in Oceanic Juvenile Loggerhead Turtles (Caretta caretta) in the South Pacific Ocean Using Satellite Tags and Ocean Circulation Data. PLoS ONE, 2014; 9 (8): e103701 DOI: 10.1371/journal.pone.0103701

Cite This Page:

PLOS. "Young loggerhead turtles not going with the flow." ScienceDaily. ScienceDaily, 6 August 2014. <www.sciencedaily.com/releases/2014/08/140806142205.htm>.
PLOS. (2014, August 6). Young loggerhead turtles not going with the flow. ScienceDaily. Retrieved March 5, 2015 from www.sciencedaily.com/releases/2014/08/140806142205.htm
PLOS. "Young loggerhead turtles not going with the flow." ScienceDaily. www.sciencedaily.com/releases/2014/08/140806142205.htm (accessed March 5, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Thursday, March 5, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Tourists Visit Rare Grey Whales in Mexico

Raw: Tourists Visit Rare Grey Whales in Mexico

AP (Mar. 4, 2015) Once nearly extinct, grey whales now migrate in their thousands to Mexico&apos;s Vizcaino reserve in Baja California, in search of warmer waters to mate and give birth. Tourists flock to the reserve to see the whales, measuring up to 49 feet long. (March 4) Video provided by AP
Powered by NewsLook.com
Australian Museum Shares Terrifying Goblin Shark With the World

Australian Museum Shares Terrifying Goblin Shark With the World

Buzz60 (Mar. 4, 2015) The Australian Museum has taken in its fourth-ever goblin shark, a rare fish with an electricity-sensing snout and &apos;alien-like&apos; jaw. Mike Janela (@mikejanela) takes a look. Video provided by Buzz60
Powered by NewsLook.com
New Hormone Could Protect Against Diabetes And Weight Gain

New Hormone Could Protect Against Diabetes And Weight Gain

Newsy (Mar. 4, 2015) A newly discovered hormone mimics the effects of exercise, protecting against diabetes and weight gain. Video provided by Newsy
Powered by NewsLook.com
Prince William Calls for Unified Effort Against Illegal Wildlife Trade

Prince William Calls for Unified Effort Against Illegal Wildlife Trade

Reuters - Entertainment Video Online (Mar. 4, 2015) Britain&apos;s Prince William pledges to unite against illegal wildlife trade on the final day of his visit to China. Rough cut - no reporter narration Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins