Polyrhachis sokolova
Encyclopedia
Polyrhachis sokolova is a species of ant
recently discovered to be capable of surviving tidal inundations.
Researchers at the James Cook University
gained attention in 2006
after finding and reporting this behavior. Polyrhachis sokolova nests in mud in mangrove
swamps, regularly inundated by rising tides. They survive these inundations in pockets of air that are trapped within the nest. This lifestyle calls for regular moving of their eggs, larvae and cocoons to stay ahead of water trickling into the nest passages. A large amount of effort is expended on repairing water damage after each high tide . The ants are able to move across large stretches of water by either running on the surface tension
skin or swimming with their legs below the surface. While swimming it has been documented that these ants are eaten by fish
, mud skippers, and crab
s.
Ant
Ants are social insects of the family Formicidae and, along with the related wasps 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 of flowering plants. More than...
recently discovered to be capable of surviving tidal inundations.
Researchers at the James Cook University
James Cook University
James Cook University is a public university based in Townsville, Queensland, Australia. The university has two Australian campuses, located in Townsville and Cairns respectively, and an international campus in Singapore. JCU is the second oldest university in Queensland—proclaimed in 1970—and the...
gained attention in 2006
2006 in science
The year 2006 in science and technology involved some significant events.-Astronomy:*January 25 - The discovery of the planet OGLE-2005-BLG-390Lb through gravitational microlensing is announced by PLANET/RoboNet, OGLE and MOA...
after finding and reporting this behavior. Polyrhachis sokolova nests in mud in mangrove
Mangrove
Mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics – mainly between latitudes N and S...
swamps, regularly inundated by rising tides. They survive these inundations in pockets of air that are trapped within the nest. This lifestyle calls for regular moving of their eggs, larvae and cocoons to stay ahead of water trickling into the nest passages. A large amount of effort is expended on repairing water damage after each high tide . The ants are able to move across large stretches of water by either running on the surface tension
Surface tension
Surface tension is a property of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in floating of some objects on the surface of water, even though they are denser than water, and in the ability of some insects to run on the water surface...
skin or swimming with their legs below the surface. While swimming it has been documented that these ants are eaten by fish
Fish
Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...
, mud skippers, and crab
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...
s.