Crested geckos are unique and colorful lizards that have become very popular as pets. They come in a wide range of colors and patterns, but blue is not a naturally occurring color for crested geckos. However, through selective breeding and genetic mutations, it is possible for crested geckos to exhibit blue coloration. In this article, we’ll explore whether crested geckos can be blue, look at the genetics behind blue coloration, and discuss some concerns around breeding for blue crested geckos.
Natural Coloration of Crested Geckos
In the wild, crested geckos are found in New Caledonia, an island east of Australia. Their natural coloration consists of various shades of brown, grey, red, orange, yellow, and green. These colors help them camouflage in the tropical forests they inhabit. Some unique patterns include harlequin, which features angular blotches of color, and reticulated, which has a net-like pattern. But blue is not found among wild crested gecko populations.
So where does blue coloration come from? It all has to do with genetics. Through captive breeding and mutations, crested geckos exhibiting rare blue hues have been produced. Let’s take a closer look at the genetics involved.
Genetics of Blue Crested Geckos
Like many reptiles, crested geckos have color cells called chromatophores in their skin that produce pigment. There are three main types:
– Melanophores – Contain black/brown melanin pigment
– Xanthophores – Contain yellow/red pigment
– Iridophores – Reflective cells that produce iridescent blues, greens, purples, and whites
Typical crested geckos have a combination of melanophores and xanthophores that make up their natural brown, orange, and yellow coloration. The blue hue is produced by iridophores. Through selective breeding, mutations may occur that result in increased iridophore cell density in the skin, leading to blue coloration.
Some of the genetic mutations that can contribute to blue include:
| Mutation | Effects |
|---|---|
| Blue phase / Blued | Causes an overall blue wash over the gecko’s coloration |
| Lavender | Dilutes black pigment while enhancing iridophore blue |
| Charcoal | Reduces melanin and enhances iridophore layer |
Selective breeding of geckos exhibiting these mutations can result in crested geckos with vivid blue coloration.
Examples of Blue Crested Gecko Morphs
Through isolating and combining various genetic mutations, breeders have created some stunning blue crested gecko morphs. Here are a few examples:
– Blue Phase – A wash of blue over the entire body. Can range from pale periwinkle to deep azure.
– Steel Blue – Very strong blue phase with reduced pattern and muted orange/yellow tones. Has a steely grayish-blue appearance.
– Lavender – Dilute purple-gray or pale lilac coloration with faint patterns.
– Blue Harlequin – Deep blue base color with brighter blue angular harlequin blotches. Striking high contrast appearance.
– Blue Flame – Bright turquoise-blue base with reticulated pattern in purple and orange. Has a fiery appearance.
– Blue Dalmatian – White base with blue spots. Vivid blue contrast on a bright white background.
As you can see, selective breeding has allowed for many shades of blue and dazzling blue combinations to be produced in crested geckos. The blue appears alongside other colors like purple, orange, and yellow in unique patterns.
Challenges of Breeding Blue Crested Geckos
While breeding blue crested geckos may seem straightforward, there are some challenges and controversies to consider:
– Expense – Blue crested geckos are often much more expensive than normal morphs due to rarity and demand. Prices commonly are in the hundreds of dollars.
– Genetic defects – Some blue mutations are linked with neurological and health issues. Breeding irresponsibly can propagate these issues.
– Color stability – The vibrancy of blue coloration may fade or change as the gecko ages. Best to view parents first.
– Difficulty pairing colors – It can take much trial and error to achieve desired blue shade and pattern combinations.
– Limited gene pool – The blue gene pool is still small. Conscientious outcrossing is important for health.
– Over-saturation – Some argue blue crested geckos are being over-produced, lowering demand and value over time.
Responsible breeding practices, health screening, genetic diversity, and realistic pricing are important considerations when breeding blue crested geckos.
Caring for a Blue Crested Gecko
Caring for a blue crested gecko is similar to caring for any crested gecko morph. Here are some key care guidelines:
Enclosure
– Glass or screened tank/terrarium 10-20 gallons large
– Planted with live or artificial foliage for climbing and hiding
– Substrate like paper towels, moss, or coconut fiber
– Numerous sticks, vines, and hides for enrichment
Temperature & Humidity
– Day temps 70-80°F
– Night temps 65-75°F
– Humidity 60-80%
Diet
– Crested gecko diet powder mixed with water
– Can supplement with live insects like crickets
– Fresh water changed daily
Handling
– Gently scoop or allow to walk onto hand
– Limit handling to 15 minutes per day
– Wash hands before and after
With proper setup and care, a blue crested gecko can thrive and display its unique coloration. Be sure to buy from a responsible breeder.
Conclusion
While crested geckos are not found in blue shades in the wild, through selective breeding and genetic mutations, stunning blue color morphs have been developed. From pale blue phasing to vivid harlequins, blue has become a popular and sought-after morph in the crested gecko hobby. However, responsible breeding practices are vital to ensure the health and longevity of these rare geckos. If bred conscientiously, blue crested geckos can make a dazzling and rewarding pet or breeding project. Though it takes work and diligence to achieve, the blue hue certainly is possible in crested geckos.
