medicalnewstoday.com
Expression Of Arginine Vasotocin In Distinct Preoptic Regions Is Associated With Dominant And Subordinate Behaviour In An African Cichlid Fish
16.07.2008 04:12
medicalnewstoday.com
Hormonal influences on behaviour can be complex. In our study we examined the neuropeptide hormone arginine vasotocin in the brain of an African cichlid fish, in which males are either dominant or subordinate. Our results show that this hormone may have multiple, even opposing, effects on both behaviour and physiology. Neurons that produce arginine vasotocin are found in several brain regions.
World
Biology
Environmental Variation At The Onset Of Independent Foraging Affects Full-grown Body Mass In The Red Fox
16.07.2008 04:12
medicalnewstoday.com
Fox cubs start foraging for themselves in July, but lack the skills to catch larger prey, so hunt insects and earthworms, which are only available on wet nights. So weather conditions in July determine their rate of growth; cubs born in hot dry summers never make up this loss, and become smaller adults. This in turn means that as adults, males have smaller territories and sire fewer cubs.
World
Biology
Children May Build Tolerance To Egg Allergy
16.07.2008 04:12
medicalnewstoday.com
New research suggests that beating childhood egg allergy is literally a piece of cake. In a preliminary study, researchers in Greece demonstrated that gradually exposing allergic children to heat-treated egg - such as those in baked goods - could help them overcome the allergy. In the trial, 94 children were regularly given tiny amounts of cake containing egg. Over a period of several months, the quantity of cake was gradually increased.
World
Allergy
English