Tuesday 6 September 2011

Ant


Ants are social insects of the family Formicidae (play /fɔrˈmɪsɨd/) and, along with the relatedwasps and bees, belong to the order Hymenoptera. Ants evolved from wasp-like ancestors in the mid-Cretaceous period between 110 and 130 million years ago and diversified after the rise offlowering plants. More than 12,500 out of an estimated total of 22,000 species have been classified.[3][4] They are easily identified by their elbowed antennae and a distinctive node-like structure that forms a slender waist.
Ants form colonies that range in size from a few dozen predatory individuals living in small natural cavities to highly organised colonies which may occupy large territories and consist of millions of individuals. These larger colonies consist mostly of sterile wingless females forming castes of "workers", "soldiers", or other specialised groups. Nearly all ant colonies also have some fertile males called "drones" and one or more fertile females called "queens". The colonies are sometimes described as superorganisms because the ants appear to operate as a unified entity, collectively working together to support the colony.[5]
Ants have colonised almost every landmass on Earth. The only places lacking indigenous ants areAntarctica and a few remote or inhospitable islands. Ants thrive in most ecosystems, and may form 15–25% of the terrestrial animal biomass.[6] Their success in so many environments has been attributed to their social organisation and their ability to modify habitats, tap resources, and defend themselves. Their long co-evolution with other species has led to mimeticcommensalparasitic, and mutualistic relationships.[7]
Ant societies have division of labour, communication between individuals, and an ability to solve complex problems.[8] These parallels with human societies have long been an inspiration and subject of study.
Many human cultures make use of ants in cuisine, medication and rituals. Some species are valued in their role as biological pest control agents.[9] However, their ability to exploit resources brings ants into conflict with humans, as they can damage crops and invade buildings. Some species, such as the red imported fire ant, are regarded as invasive species, establishing themselves in areas where they are accidentally introduced.[

Rabbit



Rabbit habitats include meadows, woods, forests, grasslands, deserts and wetlands. Rabbits live in groups, and the best known species, the European rabbit, lives in undergroundburrows, or rabbit holes. A group of burrows is called a warren.
More than half the world's rabbit population resides in North America. They are also native to southwestern Europe, Southeast Asia, Sumatra, some islands of Japan, and in parts of Africa and South America. They are not naturally found in most of Eurasia, where a number of species ofhares are present. Rabbits first entered South America relatively recently, as part of the Great American Interchange. Much of the continent has just one species of rabbit, the tapeti, while most of South America's southern cone is without rabbits.
The European rabbit has been introduced to many places around the world.

Sugar Glider



Sugar gliders can be found all throughout the northern and eastern parts of mainland Australia, as well as the surrounding islands of Tasmania, Papua New Guinea, and Indonesia. They can be found in any forest where there is food supply but are commonly found in forests with eucalyptus trees. They are nocturnal, meaning they sleep in their nests during the day and are active at night. At night, they hunt for insects and smallvertebrates and feed on the sweet sap of certain species of eucalyptus, acacia and gum trees. The sugar glider is named for its preference for nectarous foods and its ability to glide through the air, much like a flying squirrel.
When suitable habitats are present, sugar gliders can be seen 1 per 1,000 square meters provided that there are tree hollows available for shelter. They live in groups of up to seven adults, plus the current season's young, all sharing a nest and defending their territory, an example of helping at the nest. A dominant adult male will mark his territory and members of the group with saliva and a scent produced by separate glands on the forehead and chest. Intruders who lack the appropriate scent marking are expelled violently.