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A collective web of Agelena consociata in Uganda.. A social spider is a spider species whose individuals form relatively long-lasting aggregations.Whereas most spiders are solitary and even aggressive toward other members of their own species, some hundreds of species in several families show a tendency to live in groups, often referred to as colonies.
An animal that exhibits a high degree of sociality is called a social animal. The highest degree of sociality recognized by sociobiologists is eusociality . A eusocial taxon is one that exhibits overlapping adult generations , reproductive division of labor , cooperative care of young, and—in the most refined cases—a biological caste system .
The trematodes are a class of parasitic flatworm, also known as flukes. One species, Haplorchis pumilio, has evolved eusociality involving a colony creating a class of sterile soldiers. [39] One fluke invades a host and establishes a colony of dozens to thousands of clones that work together to take it over.
Pre-adaptations: Pre-adaptations for social living, such as progressive provisioning, will push the group further toward eusociality. Mutations: Mutations will arise and be selected. Some genes are known to have been silenced in social insect history, leading to the reduction of dispersal behavior and the origin of the wingless caste.
Heralded as the world's largest rodents, the South American rainforest natives can actually weigh as much as a full grown man.. But despite the fact that they apparently like to eat their own dung ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 December 2024. Small, long-tailed, seed-eating parakeet Budgerigar Temporal range: Pliocene–Holocene Pre๊ ๊ O S D C P T J K Pg N Blue cere indicates male Flaking brown cere indicates female in breeding condition Conservation status Least Concern (IUCN 3.1) Scientific classification Domain ...
It is extremely difficult to distinguish between solitary living and group living. Distinctions between the two are relatively artificial. [6] This is because many species of animals who spend a majority of their life alone, at some point in their life, will join a group or engage in social behavior. [7]
Lovebirds are well known for mirroring the behaviour of their cage-mates, a form of social facilitation. Social facilitation in animals is when the performance of a behaviour by an animal increases the probability of other animals also engaging in that behaviour or increasing the intensity of the behaviour.