Lizards in Florida have rapidly evolved traits that make them better tree-climbers, probably in response to an invasive competitor.Cuban brown anole lizards (Anolis sagrei) have spread over the past few decades across the southeastern United States, where they compete for territory and
Ice at Mercury's poles is a relatively new arrival — a finding that could help to resolve a debate about whether ice may have survived for billions of years on the planet closest to the Sun.Using data from NASA's MESSENGER spacecraft, Nancy Chabot of
Journals and funders increasingly require public archiving of the data that support publications. We argue that this mandate is necessary, but not sufficient: more incentives for data sharing are needed.
Open source software is often seen as a path to reproducibility in computational science. In practice there are many obstacles, even when the code is freely available, but open source policies should at least lead to better quality code.
Huntington's disease (HD) is associated with a mutant form of the protein huntingtin (Htt). HD-associated symptoms are alleviated by inhibition of the kinase mTOR, which activates protein – [Read More]
People think they are in control of their own decisions: what to eat or drink, whom to marry or pick a fight with, where to live, what to buy. Behavioural economists and neurophysiologists have long studied decision-making behaviours. However, these behaviours have only recently been studied through the light of molecular genetics. Here, we review recent res […]
Cholesterol is essential for neuronal physiology, both during development and in the adult life: as a major component of cell membranes and precursor of steroid hormones, it contributes to the regulation of ion permeability, cell shape, cell–cell interaction, and transmembrane signaling. Consistently, hereditary diseases with mutations in cholesterol-related […]
Astrocyte differentiation is essential for late embryonic brain development, and autophagy is active during this process. However, it is unknown whether and how autophagy regulates astrocyte differentiation. Here, we show that Atg5, which is necessary for autophagosome formation, regulates astrocyte differentiation. Atg5 deficiency represses the generation o […]
Wang, S., Li, B., Qiao, H., Lv, X., Liang, Q., Shi, Z., Xia, W., Ji, F., Jiao, J.
How the p53 transcription factor/tumor suppressor inhibits cell invasion is poorly understood. We demonstrate that this function of p53 requires its direct interaction with p21WAF1, a transcriptional target of p53, and that both p21 and p53 bind to Slug, which promotes cell invasion. Functional studies reveal that p21 and p53 cooperate to facilitate Mdm2-dep […]
Kim, J., Bae, S., An, S., Park, J. K., Kim, E. M., Hwang, S.-G., Kim, W.-J., Um, H.-D.
Fruit flies seek water, but only when they are thirsty. And imbibing is rewarding only to water-deprived individuals. The effects of thirst on water seeking and on formation of associative memories of drinking water each are mediated by distinct sets of dopamine neurons that innervate restricted zones of the mushroom bodies in the fly brain.
A study finds evidence supporting co-release of glutamate and GABA, excitatory and inhibitory fast neurotransmitters, from a single axon terminal in neurons of the ventral tegmental area that project to the lateral habenula.
Cortical neurons reduce spiking responses to repetitive sensory stimulation, but the perceptual impact of this adaptation has been difficult to assess. Work now shows that it has profound consequences for tactile perception.
Happy Halloween! Here at Arkive, we’re definitely fans of the creepier species that put us in the mood for a spooky Halloween like the vampire bat or the brain coral. But this year, we decided to share our favorite “mask-wearing” animals. These are animals that, with a little help from nature, look like they are […]
At Arkive, we are ever grateful for the support we receive from individuals whether they be photographers and filmmakers who donate their work to make Arkive possible, conservationists & researchers who passionately pursue the science and stories behind the world’s most threatened species, or teachers who bring the WILD into their classroom everyday with […]
Wildscreen Photography Festival is THE must-attend event in the wildlife photography calendar. This annual gathering of the world’s very best wildlife and environmental photographers gives you the chance to immerse yourself in the sheer wonder of the natural world. You can discover the stories behind some of the most iconic wildlife images of recent times as […]
This October, Bristol will be hosting a comedy night with a difference! If you’re in the UK, join us for a night of laughter and hilarity at Colston Hall, hosted by Simon Watt (Inside Nature’s Giants, the Infinite Monkey Cage) as we seek to delve deep into some of the weirdest creatures on this earth. […]