Pheromones mediate asymmetric mating behavior in isogamous yeast
A new paper in the journal Cognition examines the visual complexity of written language and how that complexity has evolved.
In the majority of insects, metamorphosis fosters completely different looking larval and adult stages. This "decoupling" of life stages is thought to allow for adaptation to different environments. Researchers of the University of Bonn now falsified this text book knowledge of evolutionary theory for stoneflies. They found that the ecology of the larvae largely determines the morphology of the adults by investigating 219 earwig and stonefly species at high-resolution particle accelerators.
Getting energy and nutrients from the environment -- that is, eating -- is such an important function that it has been regulated through sophisticated mechanisms over hundreds of millions of years. Some of these mechanisms are only now beginning to be unraveled. A group at the Spanish National Cancer Research Centre (CNIO) has found one of their key components -- a switch that controls the ability of organisms to adapt to low cellular nutrient levels.
A group of researchers from the University of Jyvaskyla and Stanford University were part of an expedition to French Guiana to study tropical frogs in the Amazon. Various amphibian species of this region use ephemeral pools of water as their nurseries, and display unique preferences for specific physical and chemical characteristics. Researchers were surprised to find tadpoles of the dyeing poison frog surviving in an incredible range of both chemical (pH 3-8) and vertical (0-20 m in height) deposition sites.
The old cousins of the common woodlice were crawling on Irish land as long as 360 million years ago, according to new analysis of a fossil found in Kilkenny, Ireland.
A ball of 4,000-year-old hair frozen in time tangled around a whalebone comb led to the first ever reconstruction of an ancient human genome a decade ago. The hair, which was preserved in arctic permafrost in Greenland, was collected in the 1980s. It wasn't until 2010 that evolutionary biologist Professor Eske Willerslev was able to use pioneering shotgun DNA sequencing to reconstruct the genetic history of the hair. It sparked a 'decade of discovery.'
Plants evolve specialized defense chemicals through the combined effects of genes, geography, demography and environmental conditions.
New research -- the evolution of complementary cognition -- proposes that in adapting to enormous environmental upheavals over hundreds of thousands of years, humans evolved to specialize in different but complementary forms of cognition, styles of 'thinking,' that work together as a complex adaptive system -- a kind of collective brain.
The biological and historical diversity in museum collections is staggering, with specimens collected across centuries by some of the most famous scientists in history. In a new study, researchers from the University of Copenhagen successfully revived museal fungal specimens that were more than 250 years old and used the live cultures for whole genome sequencing and physiological experiments.