The concentration of potentially toxic metals is increasing in the population of the franciscana dolphin—a small cetacean, endemic to the Rio de la Plata and an endangered species— according to a study led by a team of ...
Plants & Animals
Jun 14, 2021
0
4
Reactive oxygen species (ROS) cause oxidative stress at the cellular level. Research shows that this way, amongst others, they inhibit the germination capacity of plants, produce cytotoxins or exert toxic effects on aquatic ...
Environment
Mar 26, 2021
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14
Millions of years ago, aphid-like insects called whiteflies incorporated a portion of DNA from plants into their genome. A Chinese research team, publishing March 25th in the journal Cell, reveals that whiteflies use this ...
Plants & Animals
Mar 25, 2021
1
1996
For a bacterium, the world can be a tough place to survive, a constant competition for food and space. Some bacteria, like Pseudomonas aeruginosa, secrete toxic molecules that act as a defense mechanism against nearby competitor ...
Cell & Microbiology
Mar 15, 2021
0
34
To evaluate the chemical composition of food from a physiological point of view, it is important to know the functions of the receptors that interact with food ingredients. These include receptors for bitter compounds, which ...
Evolution
Feb 2, 2021
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8
A new study by scientists from the University of Tasmania, CSIRO and the University of South Australia is the first to find a relationship between plastic debris ingested by seabirds and liver concentrations of mineral metals, ...
Ecology
Oct 23, 2020
0
305
The spectacular leaps of gazelles, group living in deer and monkeys, and fast flight in many insects are all linked by a common phenomenon—predation. In its various forms, predation has driven the evolution of a plethora ...
Evolution
Jul 7, 2020
0
39
Researchers at Woods Hole Oceanographic Institution (WHOI) successfully conceived and tested a portable device, DISCO, that performed the first in situ measurements of a highly reactive type of oxygen, known as superoxide, ...
Environment
Dec 17, 2019
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23
When most people think of a plant, they picture stems, leaves, flowers, and all the parts that are visible above ground. But Duke biologist Philip Benfey is more interested in the hidden half of the plant that is buried beneath ...
Plants & Animals
Dec 4, 2019
0
173
Bright colors and conspicuous markings are often used in nature to warn off would-be predators. While we are used to seeing such markings—termed aposematic signals—in plants, caterpillars and snakes, we do not usually ...
Plants & Animals
Sep 10, 2019
0
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