Old-web-nostalgia is bringing back the classics.

cross-posted from: https://lemmy.world/post/46355584

Rana temporaria is an “explosive breeding” frog, meaning that they reproduce in a brief window of the year, and thousands of frogs gather in one area at the same time. In these species, the males often significantly outnumber the females and harass and coerce them into amplexus, which is the technical term used for mating in amphibians. Research prior to Dittrich's study suggested that female frogs in explosive breeding species are passive during the mating process, but she found the exact opposite.

In fact, Dittrich wasn’t initially studying the behavior of the females at all. The experiment she ran was to determine whether male frogs had a size preference when selecting mates — that is, did they prefer a larger- or smaller-sized mate? In the experiment, one male was placed in a box filled with 5 cm (2 inches) of water and two females of different sizes, and their behavior was recorded via webcam for an hour.

“But they didn’t show any size preference,” Dittrich said.

Instead, Dittrich noticed three behaviors that the female frogs repeatedly used when they wanted to avoid mating: physically rotating away, mimicking a mating call and tonic immobility. Rotating away from the male was the most common strategy — since amplexus must occur with the male behind and on top of the female, the females would flip onto their back to push the male frogs underwater. Dittrich recorded that behavior in 83% of amplexed females, and it was almost always the first attempted strategy.

If rotation was unsuccessful, 48% of the amplexed females began mimicking mating calls, as if to communicate, “I’m a male frog, not a female frog.” The tonic immobility was a last resort — 33% of amplexed female frogs stiffened their limbs, with “arms and legs outstretched from the body after being amplexed by a male.”

Interestingly, smaller frogs were more likely to go into tonic immobility than larger frogs. Dittrich theorized this might be because tonic immobility is not a conscious condition, but a response to high levels of stress. Smaller females could be younger, less experienced and more prone to high levels of stress than larger females, and thus more likely to show tonic immobility.

https://www.snopes.com/news/2023/11/18/frog-playing-dead-mating/

As an American I'm curious what it's like if you need to go to the doctor and how much you pay from say a broken arm to general checkup. Also list what country please

Credit to: @dianea@lgbtqia.space

cross-posted from: https://lemmy.world/post/46365188

Storm Daniel, which struck central Greece in September 2023, devastated the town of Palamas, leaving behind a chaotic mix of mud, debris, dead cattle, and shattered lives.

Vaios Giatropoulos moved with his family to a village where their home is on higher ground. Returning is unthinkable. “I don’t want to feel that sense of dread with every drop of rain. For several months, we feared it would flood again. I even thought about seeing a psychologist,” he recalls.

Giotopoulos belongs to a steadily expanding group of Europeans: the continent’s first climate migrants. Displacement within national borders is no longer an academic issue, as more people are affected by storms, floods, wildfires and droughts.

The Geneva-based NGO Internal Displacement Monitoring Centre (IDMC) estimates that approximately 413,000 people were displaced in the EU between 2008 and 2023. So far, 2023 has been the worst year on record, with over 200,000 Europeans internally displaced, mostly due to wildfires and storms.

The great fight arena awaits you! Step inside, test your strength, and prove your skill against powerful opponents. Only true fighters will rise to claim victory.

They're back!