The findings pave the way for understanding the mechanisms by which vitamin A operates in the brain to translate day length encoding into seasonal physiological and behavioral responses in animals.
A migrating Monarch butterfly defrosts and hangs on a branch until it can warm up February 15, 2002 in a part of the Sanctuary of Chicua, Mexico. (Getty Images) By Keith Randall, Texas A&M University Marketing and Communications The number of Monarch butterflies is down once again this year, following…
By Keith Randall, Texas A&M Marketing and Communications After rising surprisingly last year, Monarch butterfly numbers appear to be down once again this year, a trend that has seen declining numbers of the colorful creature over the past decade, says a Texas A&M University expert. Craig Wilson, a…