Naked Mole Rat – More Than Meets The Eye
### Discovering the Naked Mole Rat: Nature’s Remarkable Survivor
The naked mole rat (*Heterocephalus glaber*), a fascinating rodent native to the arid landscapes of East Africa, is renowned for its unique adaptations that enable it to thrive in harsh underground environments. Typically measuring between 3 to 4 inches (8 to 10 centimeters) in length and weighing around 1.1 to 1.2 ounces (30 to 35 grams), these creatures are easily recognizable by their hairless, gray-pink skin and small, poorly developed eyes. Their physical traits, including short, thin legs and large incisors, are perfectly suited for their burrowing lifestyle. Remarkably, naked mole rats are capable of moving both forward and backward at impressive speeds, an essential skill for navigating their intricate tunnel systems.
Living primarily in the dry tropical grasslands of Somalia, Kenya, and southern Ethiopia, naked mole rats form colonies that can number anywhere from 20 to 200 individuals. These colonies inhabit extensive burrowing networks that can stretch up to three miles in length. The social structure of these colonies is particularly intriguing, featuring a queen and a select few breeding males, while the rest of the colony consists of sterile workers divided into specialized roles, such as tunnel diggers and soldiers. The queen, who can live up to 18 years, maintains a strict hierarchy, often displaying aggression towards other females. This cooperative breeding system ensures the survival and efficiency of the colony, particularly in their challenging environment.
One of the most remarkable aspects of the naked mole rat is its extraordinary adaptability to low-oxygen conditions, which is common in their underground habitats. Their small lungs and unique blood properties allow them to efficiently bond oxygen, while their metabolic and respiratory rates can drop significantly during times of drought or food scarcity, sometimes to just 25% of normal levels. Their diet primarily consists of underground tubers, which they consume carefully, leaving the outer parts intact to allow for regeneration. Interestingly, naked mole rats also engage in coprophagy, eating their own feces to maximize nutrient absorption. Despite their harsh living conditions, these resilient rodents are not currently threatened and continue to thrive across their natural range. Moreover, their unique biological traits have made them a subject of interest in cancer research, as they exhibit a remarkable resistance to the disease, offering potential insights into cancer prevention and treatment.
https://www.youtube.com/watch?v=A5DcOEzW1wA
The
naked mole rat
(
Heterocephalus glaber
) is a
rodent
, known for its burrowing and is indigenous to East Africa. The mole rat possesses a number of characteristics which allow it to survive in underground and harsh environments.
The average naked mole rat is between 3 to 4 inches (8 to 10 centimeters) in length and weighs between 1.1 and 1.2 ounces (30 to 35 grams). They have small eyes, poor sight, and have legs that are quite short and thin. They are also able to move backward and forward at the same quick pace and have large teeth that allow them to dip. The term “naked” comes from the fact that they have very little hair and gray-pink skin.
The species is highly adapted to situations in which oxygen is limited within tunnels of their habitat. The lungs are small and their blood is greatly able to bond oxygen. They have very low metabolic and respiration rates. During periods of drought and hunger, the metabolic can decrease further to about 25% of its normal level.
The naked mole rat lives predominantly in the dry tropical grasslands in East Africa with large concentrations being concentrated in Somalia, Kenya, and southern Ethiopia. Groups of around 80 individual mole rats (although it can be as few as 20 and as many as 200) live within a complex burrowing system within the African desert. These tunnel systems can be quite long, between two to three miles in length.
There is a complex hierarchical structure where one queen and between 1 and 3 males reproduce, the other naked mole rats are workers and sterile. Dimorphism exists between the males, two forms of workers (tunnel digging/gathering and soldiers), and the breeding males. The breeding males and the queen can keep up their relationship for several years. The queens can live for a period of between 13 and 18 years and are quite hostile towards other females. Upon the death of the queen, another female will become queen in her place.
The naked mole rat mostly eats large tubers that they find underground during their mining exhibitions. However, they are also known for eating their own fecal matter. One tuber, depending upon its size, can feed a colony for several months or years as they only eat the inside of the tuber. They leave the outer parts so that the tuber is able to regenerate.
Naked mole rats are currently not a threatened species. Although their living conditions are tough, they are a widespread species.
Naked mole rats help in cancer research, because they never get cancer (
read here
).
