Some Sydney funnel-web spiders are scrambling into the Australian brush carrying special cargo: a telemetry tracker to study how far a mature male can travel at night and whether their movements are affected by the environment and weather.
Caitlin Creak, a PhD candidate at the School of Biological, Earth and Environmental Sciences of the University of New South Wales, has been tracking the male Sydney funnel-web, one of the world's deadliest spiders, for two summers. The nocturnal arachnid lives within around 100km of Australia's largest city, and is mostly active between November and April.
To be able to attach the tracker, the spider must first be knocked out with carbon dioxide, a standard practice for sedating invertebrates, Creak said. Weather permitting, Creak tracks the spider daily for as long as the trackers stay functional. They can sometimes become dislodged, and the tiny batteries last about a month.
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