Navigation Links
Researchers use GPS tracking to monitor crab behavior
Date:11/15/2012

This press release is available in German.

Researchers from Jena and Greifswald used GPS satellites for a long-term behavioral monitoring of land crab migration on Christmas Island. In cooperation with colleagues from the Zoological Institute at the University of Greifswald, scientists from the Max Planck Institute for Chemical Ecology in Jena, Germany, used a GPS-based telemetric system to analyze movements of freely roaming robber crabs, which is the first large-scale study of any arthropod using GPS technology to monitor behavior.

This analysis focussed on the coconut crab Birgus latro, a terrestrial crustacean living on tropical islands in the Indo-Pacific. Weighing up to 4 kg, Birgus latro, also called the giant robber crab, is the world's largest land-living arthropod. Its lifespan can reach 60 years. The study was carried out on Christmas Island in the Indian Ocean which has a largely undisturbed population of about several hundreds of thousands coconut crabs

Between 2008 and 2011, 55 male robber crabs were equipped with GPS tags which successfully recorded more than 1,500 crab days of activity and followed some individual animals for as long as three months. Besides site fidelity with short-distance excursions, the data revealed long-distance movements between the coast and the inland rainforest. These movements are likely related to mating, saltwater drinking and foraging.

The tracking patterns indicate path following as a main navigation strategy. Furthermore, translocation experiments showed that robber crabs are capable of homing over large distances. The search behavior induced in these experiments suggests path integration to be another important navigation strategy.

The GPS tags were custom-made by e-obs GmbH (digital telemetry) in Munich in a limited-lot production. The devices can be programmed in such a way that they record GPS positions at intervals of one hour over a period of several months. The tag also contains an accelerometer to record movements in different (x, y, or z) directions and thus the activity of the crabs. Recorded data were downloaded by the scientists once a week via a radio link within a range of about 200 meters, so that the crabs were not disturbed. The devices send out radio impulses (pingers) in order to enable localization of the crabs via wireless connection using a high-sensitivity directional antenna. Similar devices were recently used in a study to monitor bird migration. The development of further miniaturized electronic devices and batteries should help to establish this method successfully for the study of even smaller animal species in the future.


'/>"/>

Contact: Bill S. Hansson
hansson@ice.mpg.de
49-364-157-1401
Max Planck Institute for Chemical Ecology
Source:Eurekalert  

Related biology news :

1. Researchers tap into CO2 storage potential of mine waste
2. Undersea gas leaks off Israels coast are discovered by University of Haifa researchers
3. Researchers discover 2 genetic flaws behind common form of inherited muscular dystrophy
4. Researchers to study impacts of pollutant nitrogen on plant species diversity
5. Autism Speaks announces the release of new genetic data for researchers
6. Making memories: Drexel researchers explore the anatomy of recollection
7. U-M researchers to study food security across Michigan
8. Researchers test solution to fungal disease of ash trees
9. UCLA researchers to study depression in breast cancer survivors
10. Princeton researchers identify unexpected bottleneck in the spread of herpes simplex virus
11. Iowa State, Ames Lab researchers find 3 unique cell-to-cell bonds
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers use GPS tracking to monitor crab behavior
(Date:4/4/2017)...   EyeLock LLC , a leader of iris-based ... Patent and Trademark Office (USPTO) has issued U.S. Patent ... an iris image with a face image acquired in ... 45 th issued patent. "The ... the multi-modal biometric capabilities that have recently come to ...
(Date:3/29/2017)... the health IT company that operates the largest health ... today announced a Series B investment from BlueCross BlueShield ... investment and acquisition accelerates higi,s strategy to create the ... activities through the collection and workflow integration of ambient ... secures data today on behalf of over 36 million ...
(Date:3/23/2017)... March 23, 2017 The report "Gesture Recognition and Touchless ... and Geography - Global Forecast to 2022", published by MarketsandMarkets, the market is ... of 29.63% between 2017 and 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:4/21/2017)... COLORADO (PRWEB) , ... April 21, 2017 , ... ... Awards recognized outstanding manufactures in 10 categories with over 30 nominees and well ... in Manufacturing presented the new award and the event was hosted by CompanyWeek ...
(Date:4/21/2017)... ... 21, 2017 , ... Frederick Innovative Technology Center, Inc. (FITCI), ... and technology start-ups, is hosting “Celebration Friday” (a festive gathering highlighting client success ... libations and networking at 3:30 p.m. at FITCI’s 4539 Metropolitan Court location, off ...
(Date:4/20/2017)... ... ... USDM Life Sciences , the leading risk management, technological innovation and ... announce Holger Braemer as Vice President of its Europe division and Managing ... , Braemer is an integral part of USDM’s expansion of services and solutions for ...
(Date:4/20/2017)... ... April 20, 2017 , ... Parallel6™ , the leader in ... today that they were named one of the 2017 Top 10 eClinical Trial ... in the pharmaceutical industry. , “We take pride in honoring Parallel6 as one of ...
Breaking Biology Technology: