Human presence shifts balance between leopards and hyenas in East Africa
Who's stronger? A solitary leopard or cackle of hyenas? And which is best at getting along with humans?
Who's stronger? A solitary leopard or cackle of hyenas? And which is best at getting along with humans?
Plants & Animals
Jul 2, 2024
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71
A widely-used Living Planet Index (LPI) characterizes the average change in population sizes of vertebrates and is considered one of the main indicators of the state of the planet.
Ecology
Jun 27, 2024
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36
The discovery of a new, ancient, predatory reptile dubbed Parvosuchus aurelioi—part of a group of crocodile-like reptiles called pseudosuchians—in Brazil is described in a paper in Scientific Reports. The specimen, which ...
Paleontology & Fossils
Jun 20, 2024
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197
A study published in the journal BioScience sheds light on the importance of gray wolves in the western United States. Led by William Ripple, a scientist at Oregon State University and the Conservation Biology Institute, ...
Plants & Animals
Jun 19, 2024
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668
New research by Swansea University and the University of Zurich has found that sharks retained high levels of functional diversity for most of the last 66 million years, before steadily declining over the last 10 million ...
Ecology
Jun 14, 2024
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167
Late last week, the remains of a missing 12-year-old girl were found after she was taken by a saltwater crocodile in the Northern Territory.
Plants & Animals
Jul 8, 2024
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3
Scientists have revealed fossils of a giant salamanderlike beast with sharp fangs that ruled waters before the first dinosaurs arrived.
Paleontology & Fossils
Jul 7, 2024
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20
The most advanced molecular techniques contribute significantly to the identification of endangered sharks, rays and skates, collectively known as elasmobranchs, and are therefore fundamental to the enforcement of the laws ...
Plants & Animals
Jun 13, 2024
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In ecology, predation describes a biological interaction where a predator (an organism that is hunting) feeds on its prey, (the organism that is attacked). Predators may or may not kill their prey prior to feeding on them, but the act of predation always results in the death of the prey. The other main category of consumption is detritivory, the consumption of dead organic material (detritus). It can at times be difficult to separate the two feeding behaviors, for example where parasitic species prey on a host organism and then lay their eggs on it for their offspring to feed on its decaying corpse. The key characteristic of predation however is the predator's direct impact on the prey population. On the other hand, detritivores simply eat what is available and have no direct impact on the "donor" organism(s).
Selective pressures imposed on one another has led to an evolutionary arms race between prey and predator, resulting in various antipredator adaptations.
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