Showing posts with the label Jumping spiders

Scientists Tested a Well Known Colourful Jumping Spider to Find That It Is Colorblind.

Photo by  Angeli Ann Dinsay  from  Pexels Nathan Morehouse , associate professor at the University of Cinncinati, examined a common jumping species of spider, Saitis barbipes , found in Europe and North America. The males of this species have furry red crowns and legs. They perform courtship dances to attract their female counterparts. "We assumed they were using colour for communication. But we didn't know if their visual system even allowed them to see those colours," said David Outomoro , a researcher associated with the study. The biologists collected spiders for lab study in Germany. They used microspectrophotometry to identify the sensitivity of their photoreceptors (light-sensing cells) towards the light of different colours and wavelengths . But, they found no evidence for red photoreceptors.  Microspectrophotometry is a technique used to measure the absorption and transmission of a light spectrum. This can be measured through a microspectrophotometer. Here, the t

RotM: Interview with Dr. Daniel Zurek

For this month's Researcher of the Month (RotM) interview, we spoke to Dr. Daniel B Zurek, Neuroethologist and Sensory Ecologist and also the Post Doctoral Associate, studying tiger beetles in the Morehouse Lab.   at the University of Pittsburgh. Dr. Daniel recently published his findings about how tiger beetles pursue their prey in the journal Biology Letters  and frankly spoke about his study and his interests with us.  CTS:  Why should we study hunting in tiger beetles?  DZ: I am interested in the question of how visual systems of animals are adapted to their ecological needs. Tiger beetles are extremely fast running predators, which is a challenge for visual perception. Animals that are extremes in some way can make good study systems. Finding out where their limits are, and what ways nature has found to cope with these limits, can teach us a lot about general principles that might be common in other systems. It can also reveal interesting candidates for applications

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