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A PSAT first from the Dolphinfish Research Program - Brazil Chapter
In 2017, Dr. Domingos Garrone-Neto, professor at São Paulo State University (UNESP) in Brazil began collaborating with the Dolphinfish Research Program. Recently, Dr. Garrone-Neto and his team, working in partnership with Lotek Wireless Inc., Black Mamba Fishing Adventure, Bahia Pesca (Captain Tuba) and Projeto TAMAR, tagged and released the first two female dolphinfish to be released with pop-up satellite archival tags ever in the South Atlantic Ocean. Their study, orchestrated by a team of Brazilian researchers and Captains that are collaborating with the DRP, will contribute to the knowledge of the movements of the dolphinfish in the Western South Atlantic, looking for areas of aggregation, migratory routes and critical habitats that need protection or fisheries management. More information: Dolphinfish Research Program January 2018 eNewsletter

Rutgers video shows smolt tracking with robotic submarine in Alaska
Lotek Wireless Inc. acoustic telemetry moves to the next stage in the evolution of "active" acoustic tracking! Very exciting!!! Click this link to watch the video, from the Rutgers University Marine Field Station. “A robotic submarine is used to track juvenile salmon fitted with transmitters as they migrate out of an Alaskan fjord for the open ocean.”

Check out 331 days of tracking data from a Kemp's ridley sea turtle named Esmeralda
Rancho Nuevo, Mexico is the site of a long-term, collaborative bi-national program between Mexico and the United States to try and restore the Kemp's ridley sea turtle nesting population. The Division of Sea Turtle Science and Recovery at Padre Island National Seashore recently had a Kemp's ridley, named Esmeralda and outfitted with a Kiwisat 202 satellite transmitter, return to nest 331 days after her PTT was applied. This was a noteworthy event because they usually do not nest in sequential years. The mapping and dates of her movements are shown on this page at, and photos of her can also be found on Facebook at "CDEN - Sociedad Civil".

University of Vienna researchers track poison frogs with NTQ-2 NanoTags
A report and some photos from University of Vienna PhD candidate Andrius Pašukonis about their use of Lotek NanoTag transmitters on frogs in Peru.

Time-activity budgets of Cape Gannets, from data automatically collected with Coded tags and datalogging receivers
Climate-driven and anthropogenic pressures are increasing on fish stocks, and are therefore affecting Seabird demographics, diet and foraging behaviour. Seabirds can adjust their time-activity budgets in response to this. Rishworth et al. used NTQB Coded tags and DataSika datalogging receivers to automatically log nest attendance and foraging trip data over multiple seasons. Comparisons to control data, benefits of automated datalogging and impacts on birds are discussed. Download a PDF Case Study/Summary of this research here OR Download the complete paper from Methods in Ecology and Evolution here.

Survival and predator avoidance in fledgling Whinchats, with Biotrack Pip 0.6g radio tags
European Farmland bird populations are decreasing, due to modern agricultural practices, include mowing fields earlier in the summer season. The ‘stay-and-hide’ strategy for fledglings is ineffective in this situation, so mowing is highly responsible (in part) for decreases in populations of European farmland birds. Radio tracking of Whinchat fledglings shows a change to an ‘escaping through flight’ strategy as the chicks age and the authors make recommendations to help halt population decline. Download the PDF Case Study/Summary to read more

New insights into Ovenbird Migratory Connectivity, with PinPoint-10 GPS tags (1.2g)
In this study, Ovenbirds from two Eastern USA sites were captured and tagged with GPS PinPoint-10 tags to identify the non-breeding location of individuals, and to quantify the strength of migratory connectivity (the degree to which migratory individuals are arranged geographically during two or more stages of the annual cycle).

Brazilian biologists use Lotek acoustic telemetry systems to study shark-like Batoids and stingrays
Watch a video showing the tagging and release of a stingray in the Southeast Region of Brazil. This is the first project devoted to studying marine and freshwater rays in Brazil using acoustic telemetry.

Crested Auklet movement patterns
Watch a video documenting Crested Auklet movement patterns obtained using LAT 2900 geolocators. This video shows the movement of three tagged birds and their stunning triangular migration route.

Monitoring of 4 Namibian cheetahs with Sirtrack GPS Collars for the N/a’an ku sê Research Programme
A March 2013 project update report from the N/a’an ku sê Research Programme about their work monitoring perceived conflict cheetahs in Namibia, with research technology support provided by Sirtrack.

Timing of breeding carries over to influence migratory departure in a songbird
Video summary and a link to an article entitled "Timing of breeding carries over to influence migratory departure in a songbird: an automated radiotracking study" by Greg W. Mitchell,
Amy E. M. Newman, Martin Wikelski and D. Ryan Norris, published in April 2012 in the Journal of Animal Ecology.

Monitoring yellowfin tuna with LTD_2310 geolocators
Summary of, and link to, an article entitled "Movements, behavior, and habitat utilization of yellowfin tuna (Thunnus albacares) in the Pacific Ocean off Baja California, Mexico, determined from archival tag data analyses, including unscented Kalman filtering" by Kurt M. Schaefer, Daniel W. Fuller, and Barbara A. Block, published in 2011 in Fisheries Research.

Silver-haired Bat — Migratory Stopover Ecology
Researchers captured silver-haired bats (Lasionycteris noctivagans) during fall migration and used a digital radio-telemetry array to monitor their movements over an area of approximately 20 x 40 km, documenting stopover duration and departure direction.

Geolocators reveal new wintering areas of European Nightjar
Light-based geolocators have been used to find the previously unknown African wintering areas of European Nightjars (Caprimulgus europaeus) breeding in Dorset, southern England.

Radio-tracking an Emperor Dragonfly (Anax imperator)
Radio tracking is a popular technique for studying animal movement and behaviour, allowing you to locate individuals at any time, not just when they are visible. New lighter transmitters allow smaller species to be tracked. This case study describes a radio tracking study done on the largest British Dragonfly species.

Radio Telemetry and Migration Stopovers: Long Point's Digital Array
Most telemetry studies on stopover ecology have focussed on small scales, but the Phil Taylor lab (Acadia University, Atlantic Cooperative Wildlife Ecology Research Network, Bird Studies Canada) is tackling larger scale questions with Lotek Wireless / Biotrack (Canada & UK).

Unlocking the Secrets of the Ocean with Dr. Barbara Block
An excellent example of how partnerships result in better biotelemetry devices can be found in our collaboration with Dr. Barbara A. Block

Sustaining the Pacific Northwest Fishery
Of all the many partnerships that Lotek has enjoyed over the years, one of our most long-standing, productive and rewarding to date is not with an individual researcher, manager or agency, but with an entire watershed’s efforts to sustain its fishery.

Seeing the Big Picture at Queen’s University’s New Ecological Observatory
As a designer of tools for scientists, Lotek is a strong believer in supporting scientific research.