Navigation Links
Crocodiles ride ocean currents for ocean travel
Date:6/7/2010

>The data showed that crocodiles always began long-distance travel within an hour of the tide changing, allowing them to go with the flow, and that they halted their journeys by hauling out on to the river bank when the tide turned against them.

The team which included the late Steve Irwin ("The Crocodile Hunter") also re-analysed archival data from the few crocodiles that have been satellite tracked whilst undertaking ocean travel. By overlaying the crocodiles' movements with surface current estimates they found that ocean swimming crocodiles showed a similar behavioural strategy when at sea.

One satellite-tagged crocodile a 3.84 metre-long male left the Kennedy River and travelled 590 km over 25 days down the west coast of Cape York Peninsula timing its journey to coincide with a seasonal current system that develops in the Gulf of Carpentaria.

A second crocodile a 4.84 metre-long male travelled more than 411 km in only 20 days from the east coast of Cape York Peninsula through the Torres Straits to the Wenlock River on the west coast of Cape York. The Torres Straits are notorious for strong water currents, and when the crocodile arrived the currents were moving opposite to its direction of travel. It waited in a sheltered bay for four days and only passed through the Straits when the currents switched to favour its journey.

According to Dr Campbell: "The estuarine crocodile occurs as island populations throughout the Indian and Pacific ocean, and because they are the only species of salt-water living crocodile to exist across this vast area, regular mixing between the island populations probably occurs.

"Because these crocodiles are poor swimmers, it is unlikely that they swim across vast tracts of ocean. But they can survive for long periods in salt-water without eating or drinking, so by only travelling when surface currents are favourable, they would be able to move long distances by sea. This not only helps to e
'/>"/>

Contact: Dr. Hamish Campbell
c.franklin@uq.edu.au
61-733-652-516
Wiley-Blackwell
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Saltwater crocodiles can find their way home
2. Dwarf crocodiles split into three species
3. TAU scientists probe deep questions aboard EcoOceans environmental research ship
4. NASA celebrates a decade observing climate impacts on health of worlds oceans
5. CO2 emissions could violate EPA ocean-quality standards within decades
6. NASA celebrates a decade observing climate impacts on health of worlds oceans
7. Scientists, policymakers and industry leaders gather to discuss ocean iron fertilization
8. Acid oceans warning
9. Scientists gather in New Zealand to share oceans secrets
10. Unprecedented global measurement network achieves full coverage of oceans
11. Abel to receive posthumous Ocean and Coastal Leadership award
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Crocodiles ride ocean currents for ocean travel
(Date:8/20/2014)... 158 pregnant teenagers in Rochester, NY, nearly half engaged ... ice, cornstarch, vacuum dust, baby powder and soap, and ... Moreover, such teens had significantly lower iron levels as ... , Pregnant teens, regardless of pica, are at higher ... deficiency and anemia. Low iron in pregnant teens raises ...
(Date:8/20/2014)... in this image of the Para and Mato Grosso ... likely intentionally set in order to deforest the land. ... of trees where the land is thereafter converted to ... forestland to farms, ranches, or urban use. The herringbone-patterned ... Amazon Rainforest in the middle of the image are ...
(Date:8/20/2014)... When are athletes who have suffered concussions ready to ... has found that high school athletes who head back ... experience a significant regression in their abilities to simultaneously ... as seen in changes in their balance and/or altered ... Ten of the 12 had returned to activity in ...
Breaking Biology News(10 mins):Pica in pregnant teens linked to low iron 2Recovery reversal seen in Oregon study of returning concussed athletes 2Recovery reversal seen in Oregon study of returning concussed athletes 3
... Monitoring oxygen levels in water has applications for ... and a professor at Michigan State University is poised ... oxygen sensors isn,t new. The challenge, however, has been ... carbon dioxide, phosphates and biological wastes. Ruby Ghosh, associate ...
... National Laboratory have an enhanced understanding of a ... remove strontium from water. Insight into this mechanism ... radioactive strontium from existing nuclear waste. Strontium ... the more dangerous radioactive fission materials created within ...
... (Edmonton) A University of Alberta-led research team has determined ... in Alberta, opening up the possibility for an infestation that ... the Atlantic. . A group of U of A tree ... spread eastward from central British Columbia, it successfully jumped species ...
Cached Biology News:Oxygen sensor invention could benefit fisheries to breweries 2Addressing the nuclear waste issue 2Addressing the nuclear waste issue 3
(Date:8/21/2014)... His Majesty Willem-Alexander, King of the Netherlands to ... Majesty Willem-Alexander, King of the Netherlands, has announced that ... Advanced Biofuels’ Project LIBERTY cellulosic ethanol plant in Emmetsburg, ... take part in the Grand Opening Ceremony to perform ... and tour the plant. POET-DSM is a joint venture ...
(Date:8/21/2014)... BURLINGTON, Mass. , Aug. 21, 2014 /PRNewswire/ ... in Brazil and ... restrictions. The uptake of several newly approved agents, ... for this indication and the launch of emerging ... asthma markets. In particular, the emerging IL-5 inhibitors ...
(Date:8/21/2014)... HONG KONG , Aug. 21, 2014  China Cord ... today announced its plan to release financial results for ... August 28, 2014, after market close in the US.  ... call at 8:00 a.m. ET on Friday, August 29, ... brief overview of the Company,s recent developments, followed by ...
(Date:8/21/2014)... Bulgaria (PRWEB) August 21, 2014 ... released today by Ontotext . Now the ... semantic analysis of structured and unstructured data is available ... the cost of enterprise technology. Organizations that do not ... for data management can use S4 since there is ...
Breaking Biology Technology:His Majesty Willem-Alexander, King of the Netherlands, to Attend Project LIBERTY opening 2His Majesty Willem-Alexander, King of the Netherlands, to Attend Project LIBERTY opening 3Asthma Agents Currently Face a Suboptimal Coverage Environment in Brazil and Mexico, and as the Treatment Armamentarium Expands, Competitiveness Will Further Intensify 2Asthma Agents Currently Face a Suboptimal Coverage Environment in Brazil and Mexico, and as the Treatment Armamentarium Expands, Competitiveness Will Further Intensify 3China Cord Blood Corporation to Report First Quarter of Fiscal 2015 Financial Results 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 3Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 4
... June 9 Shire Limited (LSE: SHP,Nasdaq: SHPGY), ... recall of two (2) lots of the ADHD ... this action because some DAYTRANA,patches do not meet ... patients and caregivers could have difficulties removing the,liners. ...
... Thirteen Years of Capital Markets ... Experience to AOBO -,- New Role Emphasizes Strategic Growth Plan and Capital Markets Interaction ... ... AOB ) ("AOB" or "the Company"), a pharmaceutical,company dedicated to improving health through the development, ...
... FREMONT, Calif., June 9 WaferGen Biosystems,Inc. (OTC ... expression, genotyping, cell biology and stem cell research ... of assay,development, will provide a poster presentation on ... Institute,s Ninth Annual,Beyond Genome conference. The conference will ...
Cached Biology Technology:Non-Safety-Related Voluntary Recall of a Limited Portion of DAYTRANA(TM) (Methylphenidate Transdermal System) Patches Announced 2Non-Safety-Related Voluntary Recall of a Limited Portion of DAYTRANA(TM) (Methylphenidate Transdermal System) Patches Announced 3Non-Safety-Related Voluntary Recall of a Limited Portion of DAYTRANA(TM) (Methylphenidate Transdermal System) Patches Announced 4American Oriental Bioengineering Appoints Anindya Chatterjee to Chief Strategy Officer 2American Oriental Bioengineering Appoints Anindya Chatterjee to Chief Strategy Officer 3WaferGen to Present at the Ninth Annual Beyond Genome Conference 2
... Effectively condenses and traps a wide variety ... vacuum pump oil. Easy-to-use glass condensation flask (GCF400) ... self contained jar for easy draining. Rapid cooling ... remove glass flask for quick solvent changes ...
... Analysis Note: Protein determined by Biuret ... 25 mM Tris-HCl, pH 7.6, 1 mM ... 2 Preparation Unit Definition: One unit ... per minute at pH 9.8 at 37 ...
Immulon 2 HB 1x8 Strip assembled, C-bottom; high binding irradiated surface to provide increased binding affinity for hydrophilic proteins and complexes....
Immulon 2HB, Flat Bottom, 50/Bx; high binding irradiated surface to provide increased binding affinity for hydrophilic proteins and complexes....
Biology Products: