Two new studies on the evolutionary origin of teeth and of vertebra further illuminate the human connection to marine organisms that goes back millions of years. Both studies in the little skate (Leucoraja erinacea) are published this week by Andrew Gillis and Katharine Criswell of the University of Cambridge, UK, who conduct research as Whitman Center Scientists at the Marine Biological Laboratory, Woods Hole.
For the first time, a research team from the Cell and Developmental Biology (Bosch AG) working group at the Zoological Institute at Kiel University (CAU) has been able to prove that the bacterial colonisation of the intestine plays an important role in controlling peristaltic functions. The scientists published their results yesterday -- derived from the example of freshwater polyps Hydra -- in the latest issue of Scientific Reports.
Researchers have constructed a big data, evolutionary taxonomy of the world's constitutions resulting in a mathematically-derived genealogy of founding documents.
Do songbirds and humans have common biological hardwiring that shapes how they produce and perceive sounds? Scientists who study birdsong have been intrigued for some time by the possibility that human speech and music may be rooted in biological processes shared across a variety of animals. Now, research by McGill University biologists provides new evidence to support this idea.
New research on oxygen and iron chemistry under the extreme conditions found deep inside the Earth could explain a longstanding seismic mystery called ultralow velocity zones. Published in Nature, the findings could have far-reaching implications on our understanding of Earth's geologic history, including life-altering events such as the Great Oxygenation Event, which occurred 2.4 billion years ago.
Camponotini ant species have their own distinct microbiomes and the bacteria may also vary by developmental stage, according to a study published Nov. 22, 2017, in the open-access journal PLOS ONE by Manuela Oliveira Ramalho from the Universidade Estadual Paulista 'Júlio de Mesquita Filho,' Brazil, and colleagues.
A special publication titled "Planetary Biodiversity Inventory (2008-2017): Tapeworms from the Vertebrate Bowls of the Earth," just published by the University of Kansas Museum of Natural History.
Malaria parasites, although widespread among wild chimpanzees and gorillas, have not been detected in bonobos, a chimp cousin. Although the researchers saw evidence of a new malaria species in bonobos, it was limited to one small area of their range. This work helps the hunt for biological loopholes to potentially exploit the life history of ape pathogens to better understand how they cross over to humans.
In a new study published in the advanced online edition of Molecular Biology and Evolution, Chuong has led an international team to identify a plethora of new genes involved in scale and feather development. 'We now have a potential molecular explanation for these hypothesized missing links,' said Chuong. They have also demonstrated the ability to turn scales into feathers, by turning on and off key molecular circuits at critical stages of scale growth and development.
First domesticated 10,000 years ago in the Fertile Crescent of the Middle East, wheat and barley took vastly different routes to China, with barley switching from a winter to both a winter and summer crop during a thousand-year detour along the southern Tibetan Plateau, suggests new research from Washington University in St. Louis.