Download The Spirit of the Hive: The Mechanisms of Social Evolution by Robert E. Page Jr. PDF

By Robert E. Page Jr.

Charles Darwin struggled to give an explanation for how 40 thousand bees operating at nighttime, probably by way of intuition by myself, may set up themselves to build anything as ideal as a honey comb. How do bees accomplish such brilliant initiatives? Synthesizing the findings of many years of experiments, The Spirit of the Hive offers a complete photograph of the genetic and physiological mechanisms underlying the department of work in honey bee colonies and explains how bees’ advanced social habit has advanced over thousands of years.

Robert web page, one of many most popular honey bee geneticists on the earth, sheds gentle on how the coordinated job of hives arises clearly while employee bees reply to stimuli of their surroundings. The activities they soak up flip adjust the surroundings and so switch the stimuli for his or her nestmates. for instance, a bee detecting considerable shops of pollen within the hive is inhibited from foraging for extra, while detecting the presence of hungry younger larvae will stimulate pollen amassing. department of work, web page exhibits, is an inevitable made from team residing, simply because person bees range genetically and physiologically of their sensitivities to stimuli and feature diversified possibilities of encountering and responding to them.

a desirable window into self-organizing regulatory networks of honey bees, The Spirit of the Hive applies genomics, evolution, and behaviour to explain the main points of social constitution and enhance our knowing of advanced adaptive structures in nature.

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Additional resources for The Spirit of the Hive: The Mechanisms of Social Evolution

Sample text

A honey bee shows conditioned proboscis extension response during tactile antennal conditioning. Associative-learning assays for honey bees are based on standard classical conditioning models where a stimulus one wants them to learn is paired with a reward. Conditioning is based on the forward pairing of the conditioned stimulus (CS) with a reward. In tactile learning, harnessed bees have their vision occluded by black paint and are presented with a small copper plate with etched grooves, the CS.

In honey bees, it is part of the regulatory hormonal network that results in the transition of worker honey bees from performing tasks in the nest to foraging. Topical treatment of newly emerged bees with methoprene, a commercially available synthetic form of juvenile hormone, results in a significant increase in sucrose sensitivity. Octopamine is a compound produced in the brain that modulates sensitivity to sugar. When bees are fed octopamine in sucrose solutions, they become more sensitive to lower concentrations of sugar solutions—it lowers their response threshold to sugar.

However, learning experience affects response thresholds and the probability that an individual engages again in a given task. Another effect is to generate greater variance in the distribution of thresholds in a colony {F} and affect the colony’s behavioral dynamics. One example is the response of a colony to odors it has learned are associated with specific food sources. Odors that initially have no effect on recruiting experienced foragers recruit large numbers of foragers when they are presented inside the nest after foragers have experience with them.

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