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Case Study: Brazilian biologists use Lotek acoustic telemetry systems to study shark-like Batoids and stingrays

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This video shows the tagging and release of a stingray in the Southeast Region of Brazil. Details below.


Video cameraman/diver: Jayson de Barros Huss

This is the first project devoted to studying marine and freshwater rays in Brazil using acoustic telemetry. The studies are coordinated by Professors Otto Gadig and Domingos Garrone-Neto, from the Elasmobranch Research Lab of the São Paulo State University – UNESP, with the collaboration of Dr. Lisiane Hahn from Neotropical Environmental Consulting.

The research is being conducted in the Southeastern region of Brazil, in the Upper Paraná basin (municipalities of Castilho and Itapura) and in Anchieta Island State Park (municipality of Ubatuba). The study is investigating the spatial ecology of river (Potamotrygonidae) and marine stingrays (Dasyatidae) and guitarfishes (Rhinobatidae).

This video illustrates the tagging procedure employed by these researchers to attach an acoustic tag (Lotek MAP Series) to a marine stingray (Dasyatis hypostigma). The tag attachment hardware and procedure were developed through a co-operative effort between researchers and engineers and applications specialists at Lotek.

The tagged individuals, along with the network of data logging receivers deployed by the researchers in the study areas, will permit the collection of data possessing temporal and spatial resolution never before available to Brazilian ichthyologists. Researchers hope to reveal previously unknown behavior and to better understand aspects of the ecology and physiology of stingrays and shark-like Batoids, permitting their more effective management.

Financial support for this project came from São Paulo Research Foundation - FAPESP (grant #2011/18513-9).


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