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“#Sparrows’ storm stress a harbinger of climate-change impact” A study led by researcher Andrea Boyer found that white-throated sparrows do not cope well with storm stresses brought on by climate change. Credit: University of Western Ontario Sparrows show increased stress when exposed to more numerous and more severe winter storms, says a Western study that…
“#A 40-year journey leads to a new truffle species” Credit: Oregon State University As a first-year graduate student studying truffle ecology at Oregon State University, Dan Luoma attended a scientific meeting in 1981 on Orcas Island in Washington. Having recently learned how to search for truffles, he went out one day of the meeting looking…
“#Inbreeding detrimental for survival” The more inbred the birds are, the shorter lives they live. It also decreases offspring. Credit: Henrik Jensen, NTNU Biologists have long known that inbreeding can be detrimental. Inbreeding results in less genetic variation, making species more vulnerable if changes occur that require them to adapt. Now we know more about…
“#Genome-mapping reveals ‘supermutation’ resulting in cryptic coloration in stick insects” In a paper published July 23, 2020 in Science, researchers from Utah State University, the University of Sheffield, Paul Valéry University of Montpellier; the University of Bern, the Swiss Federal Institute for Aquatic Science and Technology, the Autonomous University of Querétaro, University of Notre Dame…
“#Foxes have been eating humans’ leftovers for 42,000 years”
“#Research enlightens population genomics and adaptive evolution of ancient relictual plant” Population structure of Circaeaster agresti. Credit: WBG The Qinghai-Tibet Plateau (QTP) is the largest and highest plateau in the world. The uplift of the QTP provides extraordinarily geomorphological and climatic diversity, promoting rapid radiation in plant lineages, while also harboring some ancient relictual taxa, such…
“#Strange bedfellows: How butterfly caterpillars sustain their association with cocktail ants” Association of caterpillars of Blues and Hairstreaks (Lycaenidae) with ants range from absent to facultative (opportunistic) to obligate (compulsory), and from mutualistic to parasitic. At one end of the spectrum, caterpillars of species such as the Red Pierrot (Talicada nyseus; left) do not associate…
“#Evolution makes the world less ragged” Credit: Pixabay/CC0 Public Domain How does evolution impact ecological patterns? It helps smooth out the rough edges, says UConn Ecology and Evolutionary Biology Professor Mark Urban. Urban led an international team of researchers through a review of the history of ecological and evolutionary research to establish a framework to…
“#New global study reveals ‘time tree’ of Earth’s flowering plants” Angiosperm (flowering plants) “time tree.” Credit: Dr Santiago Ramírez-Barahona New research published today in Nature Ecology & Evolution by scientists from Australia and Mexico reveals the world’s first complete angiosperm “time tree”—a reconstruction of the evolution of the Earth’s flowering plants through time. The rise…
“#Pattern analysis of phylogenetic trees could reveal connections between evolution, ecology” A simulated phylogenetic tree. Time runs from top to bottom, and nodes represent species, lines represent the mutations in DNA associated with the gene that is being studied. Bifurcations signify speciation events. This tree has a complex structure but is also fractal in a…