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Moths Wired Two Ways to Take Advantage of Floral Potluck

By Guest PostDecember 9, 2012Naturearizona, behavior, brain, brain activity, bright green, buffet, caterpillar, channels, chemical composition, favored blossoms, floral environment, flower, hong lei, humans, insects, jeffrey riffell, john hildebrand, leif abrell, manduca sexta, mechanism, moth, naive moths, neural pathways, neurobiology, north, olfactory information, oxygenated aromatic compounds, pollinator, process, scent samples, science express, scientist, sources of nectar, south america, soybean, tobacco hornworms, university, Washington

Moths are able to enjoy a pollinator’s buffet of flowers – in spite of being among the insect world’s picky eaters – because of two distinct “channels” in their brains, scientists at the University of Washington and University of Arizona have discovered.

One olfactory channel governs innate preferences of the palm-sized hawk moths that were studied – insects capable of traveling miles in a single night in search of favored blossoms. The other allows them to learn about alternate sources of nectar when their first choices are not available.

For moths, the ability to seek and remember alternate sources of food helps them survive harsh, food-deprived conditions. Scientists knew bees could learn, but this is the first proof that moths can too. (more…)

Disease that Stunts Infants’ Growth Traced to Same Gene that Makes Kids Grow too Fast

By Guest PostMay 30, 2012Scienceabhik banerjee, acronym, adrenal hypoplasia, alice, alice fleming, beckwith wiedemann syndrome, caterpillar, children, chromosome 11, dna sample, edward mccabe, eric vilain, france, geneticist, genital anomalies, genome, growth restriction, hane lee, hormone replacement therapy, image syndrome, infants growth, john achermann, lewis carroll, metaphyseal dysplasia, mushroom, mutation, nature genetics, protein coding factory, ucla, valerie arboleda, wonderland

Discovery ends UCLA scientist’s 20-year quest for cause of IMAGe syndrome

The Caterpillar got down off the mushroom … remarking as it went, ‘One side will make you grow taller, and the other side will make you grow shorter.’

—Lewis Carroll, “Alice’s Adventures in Wonderland”

UCLA geneticists have identified the mutation responsible for IMAGe syndrome, a rare disorder that stunts infants’ growth. The twist? The mutation occurs on the same gene that causes Beckwith–Wiedemann syndrome, which makes cells grow too fast, leading to very large children.

Published in the May 27 edition of the journal Nature Genetics, the UCLA findings could lead to new ways of blocking the rapid cell division that allows tumors to grow unchecked. The discovery also offers a new tool for diagnosing children with IMAGe syndrome, which until now has been difficult to identify accurately. (more…)

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Moths Wired Two Ways to Take Advantage of Floral Potluck

Disease that Stunts Infants’ Growth Traced to Same Gene that Makes Kids Grow too Fast