Featured Research

from universities, journals, and other organizations

Tracking the deep sea paths of tiger sharks: Understanding the habitat-use and migration patterns of large sharks

Date:
January 9, 2014
Source:
Griffith University
Summary:
Shark research scientists have undertaken a four year study tracking the migratory patterns of tiger sharks across the Southwest Pacific.

This shows the underwater release of one of the tiger sharks with two of the authors.
Credit: Photo by Thomas Vignaud

Shark research scientist, Dr Jonathan Werry, has undertaken a four year study tracking the migratory patterns of tiger sharks (Galeocerdo cuvier) across the Southwest Pacific.

Related Articles


The research, in collaboration with the French government, followed the movement of 33 tiger sharks (1.54 to 3.9 m total length) across the Coral Sea between New Caledonia and the Great Barrier Reef.

The animals were tagged with satellite and acoustic transmitters and their localised movements monitored by receivers in New Caledonia, the Chesterfield and Lord Howe Islands in the Coral Sea and the east coast of Queensland, Australia.

Dr Werry said the findings, to be published in the open access journal PLOS ONE, reveal that coastal marine parks provide only brief protection for these important marine predators while oceanic reefs, vital to their ecology, are overlooked.

"In this study we looked at migratory movements and fidelity to specific reefs for tiger sharks tagged in New Caledonia, the east coast of Australia (the Great Barrier Reef) and oceanic reefs in the centre of the Coral Sea," Dr Werry said.

"We found the monitored sharks utilised three dimensional activity spaces of between 503 and 2360 kmᶟ but the range of movement varied consistently with the age and sex of the animal," he said.

One 3.7 m female tiger shark was recorded to a previously unknown depth of 1136m.

"When it comes to traveling long distances adult females are the primary custodians for the 'across Coral Sea' migrations, and this is probably driven by triennial reproductive cycles," Dr Werry said.

"Pre-reproductive females and mature male tiger sharks on the other hand, were observed to demonstrate extraordinary year round residency in the oceanic Chesterfields reef, so this area appears to be a very important habitat for them."

On coastal reefs, all of the monitored tiger sharks were found to be transient.

Dr Werry said understanding the habitat-use and migration patterns of large sharks is extremely important for assessing the effectiveness of Marine Protected Areas, as well as the vulnerability of these predators to fisheries and environmental influences and management of shark-human interactions.

"Management strategies need to consider the wide-ranging movements of large (sub-adult and adult) male and female tiger sharks at the individual level, in particular when fidelity to specific coastal reefs may be consistent across groups of individuals," he said.

The importance of oceanic Coral Sea reefs should be a priority for future research."


Story Source:

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


Journal Reference:

  1. Jonathan M. Werry, Serge Planes, Michael L. Berumen, Kate A. Lee, Camrin D. Braun, Eric Clua. Reef-Fidelity and Migration of Tiger Sharks, Galeocerdo cuvier, across the Coral Sea. PLoS ONE, 2014; 9 (1): e83249 DOI: 10.1371/journal.pone.0083249

Cite This Page:

Griffith University. "Tracking the deep sea paths of tiger sharks: Understanding the habitat-use and migration patterns of large sharks." ScienceDaily. ScienceDaily, 9 January 2014. <www.sciencedaily.com/releases/2014/01/140109003959.htm>.
Griffith University. (2014, January 9). Tracking the deep sea paths of tiger sharks: Understanding the habitat-use and migration patterns of large sharks. ScienceDaily. Retrieved March 5, 2015 from www.sciencedaily.com/releases/2014/01/140109003959.htm
Griffith University. "Tracking the deep sea paths of tiger sharks: Understanding the habitat-use and migration patterns of large sharks." ScienceDaily. www.sciencedaily.com/releases/2014/01/140109003959.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

Praying Mantis Looks Long Before It Leaps

Praying Mantis Looks Long Before It Leaps

Reuters - Innovations Video Online (Mar. 5, 2015) Slowed-down footage of the leaps of praying mantises show the insect&apos;s extraordinary precision, say researchers. Video provided by Reuters
Powered by NewsLook.com
Octopus Grabs Camera and Turns It Around On Photographer

Octopus Grabs Camera and Turns It Around On Photographer

Buzz60 (Mar. 5, 2015) A photographer got the shot of a lifetime, or rather an octopus did, when it grabbed the camera and turned it around to take an amazing picture of the photographer. Jen Markham (@jenmarkham) has the story. Video provided by Buzz60
Powered by NewsLook.com
Ringling Bros. Eliminating Elephant Acts

Ringling Bros. Eliminating Elephant Acts

AP (Mar. 5, 2015) The Ringling Bros. and Barnum & Bailey Circus is ending its iconic elephant acts. The circus&apos; parent company, Feld Entertainment, told the AP exclusively that the acts will be phased out by 2018 over growing public concern about the animals. (March 5) Video provided by AP
Powered by NewsLook.com
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

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