What social behavior can occur in spiders? Detailed answer

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What social behavior can occur in spiders? Detailed answer

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What social behavior can occur in spiders?

Most species of spiders are focused on a solitary lifestyle, but there are species that can be called social to one degree or another. A group of spiders builds a common web, which allows you to increase the captured biomass per spider. Sometimes common nets are so large and strong that birds and bats come across in them. Some species, such as Anelosimus eximius, approach the eusocial behavior of bees or ants in a number of ways. In a colony of such spiders, a dominant female appears, while the rest of the females are non-reproductive and only look after the common offspring, a mechanism similar to swarming is also seen, when a group of females separates from the colony and emigrate to a new place.

Authors: Jimmy Wales, Larry Sanger

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Is it worth believing the centenary calendar?

Attempts to predict, at least in general terms, the weather for many years ahead were made as early as the 1652th century, first in Nuremberg by Mauritsius Knauf for 1658-1670, then by an associate of Peter I, general, scientist and "warlock" Yakov Vilimovich Bruce (1735 -100) XNUMX years ahead. These attempts were not crowned with success. Only in our time, on the basis of an analysis of the influence of terrestrial and cosmic factors, quite successful forecasts are made, which, however, are not recognized by professional meteorologists.

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