Fish undisturbed by flash photography

Fish experience stress, as do mammals and humans. When under stress, fish release the hormones adrenaline and cortisol. A team of scientists spearheaded by IGB has investigated whether flash photography induces an increase ...

Light pollution makes fish more courageous

Artificial light at night makes guppies more courageous during the day, according to a behavioural study led by researchers from the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) and the Max Planck Institute ...

Summer heat waves impede animal reproduction

As we swelter through the hot Australian summer, Western Sydney University researchers have provided an insight into the broad ranging physiological effects of summer heatwaves on animals.

Stress test: New study finds seals are stressed-out by sharks

While a little added stress may be helpful to flee a dangerous situation, or to meet an approaching deadline, it's no secret that prolonged exposure to the stress hormone cortisol is linked to health problems. So, what effects ...

How to keep cows happy

Corrals are used on livestock farms around the world to round up the animals when they need to be weighed or vaccinated. New research now shows that removing splashes of colors, shadows or water puddles from corrals, keeping ...

Stressed lemurs have worse chances of survival

High levels of hair cortisol—a sign of long-term stress—are associated with reduced survival in wild grey mouse lemurs (Microcebus murinus), according to a study published in the open access journal BMC Ecology.

Study links fish stress hormones to whether they take the bait

Take a fish out of water and its stress hormones will go up. Adrenaline and noradrenaline, the "fight or flight" hormones, peak first, followed more gradually by cortisol. A new study finds that largemouth bass whose cortisol ...

Search and rescue dogs do their jobs despite travel stress

When disaster strikes, you want the very best tools, functioning at their peak. In the case of catastrophic earthquakes, tornadoes, or even bombings in war zones, those tools are search and rescue dogs. But researchers have ...

Shearing of alpacas is necessary, but also stressful

Alpacas, a species of New World camelids, have very thick wool. This requires them to be shorn regularly, just like sheep. But shearing is a source of stress for the animals. This has now been confirmed for the first time ...

Can aromatherapy calm competition horses?

Although studies suggest that inhaling certain scents may reduce stress in humans, aromatherapy is relatively unexplored in veterinary medicine. But new research presented today at the American Physiological Society (APS) ...

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