As coral species die off, they may be leaving a death spiral in their wake: Their absence could be sapping life from the corals that survive. In a new study, when isolated from other species, corals got weak, died off or grew in fragile structures. The study has shown it is possible to quantify positive effects of coral biodiversity and negative effects of its absence.
Some people consider pufferfish, also known as fugu, a delicacy because of its unique and exquisite flavor, which is perhaps seasoned by knowledge that consumption of the fish could be deadly. Now, researchers have identified the major compounds responsible for the taste of pufferfish, minus the thrill of living dangerously. They report their results in ACS' Journal of Agricultural and Food Chemistry.
Most consumers' exposure to toxic methylmercury occurs when they eat fish. But research just published in the ACS journal Environmental Science & Technology could help clarify why methylmercury concentrations in tuna vary geographically.
Humpback whales overwintering in feeding areas may sing complex, progressive songs which closely resemble those associated with breeding grounds, according to a study published Jan. 23, 2019, in the open-access journal PLOS ONE by Edda E. Magnúsdóttir and Rangyn Lim from the University of Iceland.
In the animal kingdom, food access is among the biggest drivers of habitat preference. It influences, among other things, how animals interact, where they roam and the amount of energy they expend to maintain their access to food. But how do different members of ecologically similar species manage to live close to each other?
Populations of coastal cutthroat trout and coastal giant salamanders in the Pacific Northwest show the ability to rebound quickly from drought conditions, buying some time against climate change.
The hagfish dates back at least 300 million years. The secret of survival for these eel-like sea creatures can be found in the rate and volume of slime it produces to fend off predators. Interestingly, the oldest fossils of these eel-like sea creatures, were found in Illinois, and today researchers from the University of Illinois at Urbana-Champaign are beginning to uncover the mystery of how the hagfish uses this substance to choke its predators
The researchers discovered a biological signal from corals that attracts potential symbionts.
The two seabird species unique to Hawaii, Newell's shearwaters and Hawaiian petrels, are the focus of major conservation efforts -- at risk from habitat degradation, invasive predators, and other threats, their populations plummeted 94 percent and 78 percent respectively between 1993 and 2013. However, a new study in The Condor: Ornithological Applications offers hope of previously undetected colonies of these birds on the island of Oahu, from which they were believed to have vanished by the late 1700s.
The population of Antarctic krill, the favorite food of many whales, penguins, fish and seals, shifted southward during a recent period of warming in their key habitat, a paper published today in Nature Climate Change reports.