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gioia.seretti
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Friday 29 May 2026 14:42:09 GMT
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Massimo Fallini :
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Saharan Silver Ant The Perfect Planet BBC Nature S1: 2 Sun The Saharan silver ant (Cataglyphis bombycina) is a species of insect that lives in the Sahara Desert. It is the fastest of the world's 12,000 known ant species, clocking a velocity of 855 millimetres per second (over 1.9 miles per hour or 3.1 kilometres per hour). It can travel a length 108 times its own body length per second. Largely due to the extremely high temperatures of their habitat, but also due to the threat of predators, the ants are active outside their nest for only about ten minutes per day. The twin pressures of predation and temperature restrict their above-ground activity to within a narrow temperature band between that at which predatory lizards cease activity and the ants' own upper threshold. The ants often traverse midday temperatures around 47 °C (117 °F) to scavenge corpses of heat-stricken animals. To cope with such high temperatures, the ants have several unique adaptations. When traveling at full speed, they use only four of their six legs. This quadrupedal gait is achieved by raising the front pair of legs. Several other adaptations, including a very high stride frequency, make C. bombycina one of the fastest-walking animal species in relation to their body size. Keeping track of the position of the sun, the ants are able to navigate, always knowing the direct route back to their nest, thus can minimize their time spent in the heat. A few scouts keep watch and alert the colony when ant-eating lizards take shelter in their burrows. Then the whole colony, hundreds of ants, leaves to search for food, although they need to complete their work before the temperature reaches 53 °C (127 °F), a temperature capable of killing them. Saharan silver ants produce heat shock proteins (HSPs), but unlike other animals, they do this not in direct response to heat. Instead, they do this before leaving the nest, so they do not suffer the initial damage when their body temperature rises quickly. These HSPs allow cellular functions to continue even at very high body temperatures. If they did not produce the proteins in anticipation of the extreme heat, they would die before the proteins could have their effect. #saharansilverant #saharadessert #theperfectplanet #davidattenborough #saveourplanet🌎
Saharan Silver Ant The Perfect Planet BBC Nature S1: 2 Sun The Saharan silver ant (Cataglyphis bombycina) is a species of insect that lives in the Sahara Desert. It is the fastest of the world's 12,000 known ant species, clocking a velocity of 855 millimetres per second (over 1.9 miles per hour or 3.1 kilometres per hour). It can travel a length 108 times its own body length per second. Largely due to the extremely high temperatures of their habitat, but also due to the threat of predators, the ants are active outside their nest for only about ten minutes per day. The twin pressures of predation and temperature restrict their above-ground activity to within a narrow temperature band between that at which predatory lizards cease activity and the ants' own upper threshold. The ants often traverse midday temperatures around 47 °C (117 °F) to scavenge corpses of heat-stricken animals. To cope with such high temperatures, the ants have several unique adaptations. When traveling at full speed, they use only four of their six legs. This quadrupedal gait is achieved by raising the front pair of legs. Several other adaptations, including a very high stride frequency, make C. bombycina one of the fastest-walking animal species in relation to their body size. Keeping track of the position of the sun, the ants are able to navigate, always knowing the direct route back to their nest, thus can minimize their time spent in the heat. A few scouts keep watch and alert the colony when ant-eating lizards take shelter in their burrows. Then the whole colony, hundreds of ants, leaves to search for food, although they need to complete their work before the temperature reaches 53 °C (127 °F), a temperature capable of killing them. Saharan silver ants produce heat shock proteins (HSPs), but unlike other animals, they do this not in direct response to heat. Instead, they do this before leaving the nest, so they do not suffer the initial damage when their body temperature rises quickly. These HSPs allow cellular functions to continue even at very high body temperatures. If they did not produce the proteins in anticipation of the extreme heat, they would die before the proteins could have their effect. #saharansilverant #saharadessert #theperfectplanet #davidattenborough #saveourplanet🌎

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