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Goby fish fins may be as sensitive as human fingertips, study suggests
The team studied goby fish from Lake Michigan as they manouvered over different surfaces.

Researchers observe how goby fish use their fins to interact with different surfaces.

A new study by the University of Chicago has found that goby fish fins might be as sensitive to touch as human fingertips.

The findings, published in the Journal of Experimental Biology, suggest that human ability to detect differences between surfaces and shapes likely evolved in a distant common ancestor.

In the study, researchers set out to see if bottom-dwelling goby fish could feel different surfaces with their fins.

The team collected goby fish from Lake Michigan and filmed them in a tank as they manoeuvred over different surfaces, such as a piece of slate or plastic. They noted how the fish’s fins splayed out over each surface, similar to how a human might place their hand on a surface.

Researchers then set out to see if the fish could differentiate between fine variations, such as that of different grades of gravel. They designed a rotating wheel with ridges spaced along the edges and studied the nerve signals that the touch produced.

Study author Adam Hardy said that the nerve responses matched the pattern of the ridges, suggesting that gobies could be as sensitive to detecting coarse surface textures as the finger pads on primate.

“Primates are often held up as the gold standard in tactile sensitivity, so it was really exciting to see that fish fins exhibit a similar tactile response," he said.

He added that the gobies’ tactical sensitivity could have originated far back in evolution.

“This primate hand-like touch also suggests that the ability to detect surface differences via touch has been around a lot longer than we previously thought,” he said.

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Webinar to focus on equine worm control

News Story 1
 Vets, veterinary nurses and RAMAs are being invited to join a free CPD webinar on late winter and early spring equine worm control.

Hosted by Zoetis vet Dr Wendy Talbot, the webinar aims to help prescribers understand which parasites are of most concern at this time of year. It will also cover how to assess parasite risk, selecting a suitable wormer and spring wormer plans, concluding with a Q&A session.

The webinar takes place on Thursday, 18 March at 10 am and will be repeated at 7 pm for those unable to listen during the day. To book the 10 am webinar, click here, and to register for the 7 pm webinar, click here

Click here for more...
News Shorts
Avian influenza confirmed in Lancashire

A case of highly pathogenic (HPAI H5N8) avian influenza has been confirmed in two captive peregrine falcons on a non-commercial, non-poultry premises near Skelmersdale, West Lancashire.

Following a risk assessment, APHA has declared that no disease control zones have been put in place surrounding this non-commercial, non-poultry premises.

Eighteen cases of HPAI H5N8 have now been identified in poultry and other captive birds in England. A housing order for poultry and captive birds introduced by Defra to control the spread of the disease expired on 31 March, although bird keepers in England are still required by law to comply with biosecurity measures.

For more information, please click here.