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:2/3/2016)... , Feb. 3, 2016 ... the addition of the "Emotion Detection ... Machine Learning, and Others), Software Tools (Facial ... Areas, End Users,and Regions - Global forecast ... --> http://www.researchandmarkets.com/research/d8zjcd/emotion_detection ) has ...
(Date:2/2/2016)... 2, 2016   Parabon NanoLabs (Parabon) ... Army Research Office and the Defense Forensics and ... of the company,s Snapshot Kinship Inference ... more generally, defense-related DNA forensics.  Although Snapshot is ... appearance and ancestry from DNA evidence), it also ...
(Date:1/28/2016)... Jan. 28, 2016 Synaptics (NASDAQ: SYNA ), a ... its second quarter ended December 31, 2015. ... of fiscal 2016 increased 2 percent compared to the comparable quarter ... of fiscal 2016 was $35.0 million, or $0.93 per diluted share. ... income for the first quarter of fiscal 2016 grew 9 percent ...
Breaking Biology News(10 mins):
(Date:2/3/2016)... SAN DIEGO , Feb. 3, 2016 /PRNewswire/ ... medicine company with the first pluripotent stem cell-derived ... 1 diabetes in clinical-stage development, today announced that ... Janssen Pharmaceutical Companies of Johnson & Johnson, have ... BetaLogics group into ViaCyte.  The agreement provides ViaCyte ...
(Date:2/3/2016)... YORK and HOLLISTON, Mass., Feb. 3, 2016 ... HART ), a biotechnology company developing bioengineered ... trachea and bronchus, today announced that CEO ... BIO CEO & Investor Conference on Tuesday, ... New York City . HART,s ...
(Date:2/3/2016)... ... 03, 2016 , ... StarNet Communications Corp, ( http://www.starnet.com/ ) ... addition of a powerful “Session Preview” feature to its FastX remote Linux visualization ... remote Linux desktop or other applications (sessions) they have running on a remote ...
(Date:2/3/2016)... ... February 03, 2016 , ... ZeptoMetrix™ Corporation (ZMC), ... development and ongoing quality control of molecular assays targeting the Zika Virus. , ... Gregory R. Chiklis, President and CEO of ZeptoMetrix, relayed to his Executive Team. ...
Breaking Biology Technology: