Fish forced to go deep: they are losing colors



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Fish forced to go deep: they are losing colors

Fish forced to go deep: they are losing colors. In an article published by researchers Eleanor Caves and Sönke Johnsen in the journal Proceedings of the Royal Society B: Biological Sciences under the title The Sensory Impacts of Climate Change: Bathymetric Shifts and Visually Mediated Interactions in Aquatic Species, said fish are moving deeper due to the climate crisis, and that, as a result, they are losing their color.

Italian Ernesto Azzurro, CNR researcher at the Institute for Biological Resources and Marine Biotechnologies in Ancona, said: "Due to global warming, many species are shifting their distribution towards the poles in search of more suitable climatic areas.

A distribution shift that it also occurs vertically, as can be easily observed in terrestrial environments, where plants and animals are moving at altitude in search of climatic shelters. But the phenomenon has still little-known implications and has only recently been documented for fish species.

the temperature decreases but also the light, as it is absorbed by the water masses. The latest studies thus highlight changes in the sensory sphere that can influence the behavior, the reproductive capacity and the evolutionary future of marine species.

Mobile species have some more chance of adapting to climate change than species and benthic, those anchored to the bottom, such as corals and gorgonians, which cannot escape from the heat and die en masse following the numerous temperature peaks.

Certainly these epochal and so rapid changes in marine environments must be kept under strict control: in the Mediterranean we do it with the Mpa-Engage project. We need this information to fully understand what is happening in our seas and to understand how to best adapt to these rapid transformations."

Poacher trampled to death by elephants in South Africa

How fate sometimes pays off with the same coin: an alleged poacher in South Africa was trampled to death by elephants in the Kruger National Park. Forest rangers spotted three poachers who came across a herd of elephants.

They later discovered a man trampled by large mammals and died of his wounds. It would appear that another man was also attacked but managed to escape, while a third man was arrested. Poachers are slaughtering rhinos to cut off their horns, which are in great demand in Asia for its use in traditional medicine or as an alleged aphrodisiac.

South Africa, home to around 80 percent of the world's rhino population, is considered a poacher's paradise, with many killing concentrated in Kruger Park. In 2020, 394 rhinos were killed. There are almost 40 raids per day by poachers.