Holidaymakers' photos could help scientists track the movements of giant endangered sharks living in the waters of the Indian Ocean. A new study, led by a researcher from Imperial College London, is the first to show that these publically sourced photographs are suitable for use in conservation work.
Tourists scuba diving and snorkelling in the Maldives frequently take underwater pictures of the spectacular and docile whale shark, often called the world’s largest fish. Conservationists have long hoped to use this photographic resource to help them trace the sharks’ life history, relationships and geographic distribution, although the value of these amateur snapshots has never been properly measured.
Tim Davies of Imperial’s Department of Life Sciences is the lead author on a study published in Wildlife Research, the first to examine how reliable photographs sourced from the public actually are. He and his team did this by comparing results using tourist images with results based on surveys by marine researchers specifically aiming to track the sharks.
In order for a shark to be clearly identified, any photograph must capture the distinctive pattern of spots located directly behind the gills. This unique marking serves as a ‘fingerprint’, which can then be scanned with a computer programme to tell the animals apart.
The study looked at hundreds of images taken by the public, of which many were downloaded from image-sharing websites such as Flickr and YouTube. Individual whale sharks could be successfully identified in 85 per cent of cases, surprisingly close to the 100 per cent identification possible in photographs taken by researchers.
Speaking about the results, Davies said: “Globally, this outcome provides strong support for the scientific use of photographs taken by tourists for whale shark monitoring. Hopefully, this will give whale shark research around the world confidence in using this source of free data. In the Maldives in particular, where whale shark tourism is well established and very useful for collecting data from throughout the archipelago, our results suggest that whale shark monitoring effort should be focused on collecting tourist photographs.”
Although they are widely thought to be rare, the conservation status of the whale shark has long remained uncertain. This study therefore allowed the team to measure the populations of whale sharks in the area, which they estimate have not declined in recent years. Davies added: “Hopefully, as more data come in from tourists over the years and from further across the archipelago, we will be able to build up our understanding of the Maldives population and monitor its status closely.”
Holidaymakers heading to the Maldives, as well as to other regions, can assist researchers in monitoring whale shark populations by uploading their shark photos to the ECOCEAN whale shark identification library website (www.whaleshark.org). For more information on Maldivian whale shark visit the Maldives Whale Shark Research Programme website (http://maldiveswhalesharkresearch.org).
More articles from Ecology, The Environment and Conservation:
New rearing method may help control of the western bean cutworm
09.12.2013 | Entomological Society of America
The invasive Turkestan cockroach is displacing the oriental cockroach in the southwestern US
09.12.2013 | Entomological Society of America
Researchers from Brown University and the University of Hawaii have found some mineralogical surprises in the Moon's largest impact crater.
Data from the Moon Mineralogy Mapper that flew aboard India's Chandrayaan-1 lunar orbiter shows a diverse mineralogy in the subsurface of the giant South Pole Aitken basin.
The differing mineral signatures could be reflective of the minerals dredged up at the time of the giant impact 4 billion years ago, ...
In power electronics systems bonded connections create the central electrical connections between adjoining surfaces.
The quality of these bonded connections is one of the main factors that determines the reliability and availability of drive systems in electric vehicles, and hence constitutes a major design challenge for German auto manufacturers aiming to electrify their vehicles.
Now the partners participating in the RoBE (Robust Bonds in ...
International team of scientists develops new feedback method for optimizing the laser pulse shapes used in the control of chemical reactions
In many ways, traditional chemical synthesis is similar to cooking. To alter the final product, you can change the ingredients or their ratio, change the method of mixing ingredients, or change the temperature or pressure of the environment of the ingredients.
Like an accomplished chef, chemists have become very skilled ...
A genetic defect protects mice from infection with influenza viruses
A new study published in the scientific journal PLOS Pathogens points out that mice lacking a protein called Tmprss2 are no longer affected by certain flu viruses.
The discovery was made by researchers from the Helmholtz Centre for Infection Research (HZI) in Braunschweig in collaboration with colleagues from Göttingen and ...
The Light: Global study gets underway with online user survey
Light has a fundamental impact on our sense of well-being and performance. In cooperation with Zumtobel, a supplier of lighting solutions, Fraunhofer IAO has launched a global user survey of lighting quality in offices. The objective is to identify the best lighting conditions for a variety of spaces and lighting ...
10.12.2013 | Physics and Astronomy
10.12.2013 | Agricultural and Forestry Science
10.12.2013 | Power and Electrical Engineering
10.12.2013 | Event News
05.12.2013 | Event News
04.12.2013 | Event News