Chloe Adams
Candling Crested Gecko eggs involves examining the eggs to check for fertility and embryo development. It is done by shining a bright light through the eggs, allowing the observer to see the internal structure and identify any issues. This technique is used by breeders and enthusiasts to monitor the growth of the embryos and ensure the eggs are healthy. The cheerio-spot method is commonly used, where the egg is oriented with the cheerio side up to prevent the embryo from drowning. Candling allows for the observation of the developing veins and embryo, providing valuable insights into the health and progress of the Crested Gecko eggs.
| Characteristics | Values |
|---|---|
| What to look for | "Cheerio" and veins |
| What does the "cheerio" look like? | A reddish circle |
| What happens if you don't see the "cheerio" | The egg is likely infertile |
| How to determine egg orientation | Incubate cheerio-side-up or the embryo will drown |
| What to do if you can't find the "cheerio" | Remove the egg from the lay box and keep it in the same orientation |
| How to mark egg orientation | Use an ultra-fine sharpie or a pencil |
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What You'll Learn
What to look for when candling crested gecko eggs
When candling crested gecko eggs, there are several things you should look out for to determine the fertility and health of the eggs. Firstly, it is important to note that candling can be challenging, and it may take some time to accurately interpret the results.
In the early days of candling crested gecko eggs, the results can be very faint, so using a brighter torch in a dark area can help improve visibility. If the eggs are fertile, you should eventually see a pinky patch, which will gradually spread and take over the entire egg. This is an indication that the embryo is developing and gaining the necessary blood supply.
Subsequently, you should look for the formation of a dark patch. This dark patch will continue to expand until the egg is completely black, indicating that the gecko inside is ready to hatch. If the egg remains yellow, it is likely infertile. However, it is important to note that gecko eggs do not always start with a reddish colour, and they may initially appear more orangey-yellow before gaining redness over a couple of weeks.
Another thing to look for is the "cheerio-spot" or "cheerio sign". This refers to a reddish circle that should be visible within the egg, indicating fertility. If this cheerio spot is absent, it could be a sign of infertility. However, it may take some experience to identify this feature accurately. Additionally, ensuring that the eggs are incubated cheerio-side-up is crucial for the embryo's survival.
Finally, it is important to be cautious about the presence of any mould or dimpling on the egg's surface. Mould growth and dimpling could indicate that the egg is bad, and it may be necessary to remove it from the incubator to prevent potential harm to the other eggs.
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How to identify a 'cheerio'
To identify a "cheerio" in a crested gecko egg, you will need to candle the egg. Candling involves shining a bright light through the egg to check for signs of fertility and viability. This can be done using a keychain LED flashlight or a similar bright light source.
When candling a crested gecko egg, look for a small, reddish "cheerio" or "bullseye" shape, which indicates a developing embryo. The "cheerio" is typically visible right away, but it can be subtle in the early stages of development. If you see the "cheerio," the egg is likely viable and fertile. However, it is important to note that the absence of a "cheerio" does not necessarily mean the egg is infertile, as it can take a few days for it to become apparent.
In addition to candling, there are other signs you can look for to determine the viability of crested gecko eggs. The eggs should be white to milky white in colour and have a smooth oval shape. Yellow and misshapen eggs are usually infertile. As the eggs develop, you may notice signs of hatching, such as leaking, sweating, and denting. Leaking is a common sign of hatching, but it can also indicate a damaged egg. Sweating may indicate that the hatchling is ready to come out but is struggling due to a hard shell or weakness.
It is important to handle crested gecko eggs with care and not to discard them prematurely. Even eggs that appear funky or abnormal can contain viable embryos. If you are unsure about the viability of an egg, it is recommended to continue incubating it and monitor for further development.
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What to do if you can't find a 'cheerio'
If you can't find a cheerio when candling crested gecko eggs, don't panic. It's important to remember that eggs don't start out looking like the typical "cheerio-spot" photos and videos you may have seen. The "cheerio" – a small red dot indicating fertility – can take a few weeks to develop.
If you can't find a cheerio, one option is to remove the egg from the lay box and mark the current orientation with a pencil or ultra-fine sharpie. This way, you can ensure that the egg remains cheerio-side-up, reducing the risk of the embryo drowning.
It's also worth noting that gecko eggs can sometimes appear infertile, even when there is a male present. In some cases, the eggs may be parthogenic, meaning they have no father and are essentially clones of the mother. These eggs are typically not very viable and may not live long after hatching, but it's still worth trying to incubate them.
If you're unsure whether your gecko eggs are fertile, it's recommended to try candling again in a few days. The cheerio may appear with time, and you can adjust the egg's orientation accordingly. Remember, the cheerio should face upwards to prevent the embryo from drowning.
In summary, if you can't find a cheerio when candling crested gecko eggs, mark the current orientation, and consider giving the eggs some more time. You can also try candling from different angles or using different lighting to get a better view. Remember that the cheerio may take a few weeks to develop, and even if the eggs are infertile or parthogenic, it's worth trying to incubate them.
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How to determine egg orientation
Determining the orientation of a crested gecko egg is crucial to ensure the embryo's survival during incubation. While the exact position is not critical, maintaining the egg's original orientation is essential. Here are the steps to determine and maintain egg orientation:
Mark the Original Orientation
When you first discover the gecko eggs, mark the side facing upward. You can use a sharpie marker or a pencil to make a small mark on the egg's surface. This mark will guide you in maintaining the correct orientation throughout the incubation process.
Understand the Importance of Orientation
The orientation of crested gecko eggs matters, especially during the later stages of incubation. Turning the egg during this period can cause the sac to detach, endangering the embryo's life. Therefore, it is crucial to keep the egg in the same orientation as when it was laid to maximize the chances of a successful hatch.
Candling for Embryo Development
Candling is a technique used to check for embryo development and fertility. Shine a bright light, such as an LED flashlight, through the semi-translucent egg shell. Look for a "cheerio" or a red "bullseye," which indicates a developing embryo. The "cheerio" or "bullseye" should be oriented upwards during incubation to prevent the embryo from drowning.
Incubation Practices
During incubation, maintain the eggs at a temperature between 70-80 degrees Fahrenheit and a humidity level of about 80%. Keep the incubation media moist, and regularly check for mold growth. If mold is present, gently wipe it off with a paper towel, being careful not to turn the eggs over.
In summary, determining egg orientation for crested geckos involves marking the original upward-facing side and maintaining that orientation throughout incubation. Candling helps identify the "cheerio" or "bullseye," ensuring it remains in the correct position. Proper incubation practices, including temperature, humidity, and mold prevention, also contribute to successful hatching.
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What to do with infertile gecko eggs
When it comes to dealing with infertile gecko eggs, there are several things to consider and steps to take. Firstly, it's important to identify whether the eggs are indeed infertile. Infertile gecko eggs may exhibit certain characteristics, such as being extremely soft and floppy, flat with poorly formed shells, or shrivelled. These physical traits can be indicators that the eggs are not viable.
In some cases, gecko eggs may be laid in an inappropriate location within the enclosure, leading to insufficient humidity to maintain their integrity. This can result in shrivelled eggs, which are often infertile. It's worth noting that inexperienced female geckos may lay eggs in the wrong place, or they may sense that the eggs are infertile and choose an unsuitable location.
Once you have identified infertile eggs, it is generally recommended to leave them in the enclosure until they either dry out completely or start to deteriorate. Removing the eggs from the tank shortly after they are laid can help create a safer and more comfortable environment for the female gecko. However, it is important to use caution during this process to avoid damaging the eggs or causing stress to the gecko.
While waiting for the infertile eggs to dry out or deteriorate, it is crucial to maintain a warm environment for the gecko and provide adequate oxygen. Opening the lid of the tank occasionally, such as once a week, can help achieve this. Additionally, monitoring the eggs regularly can help ensure they are following the expected path of drying out or deteriorating without any unexpected changes.
In some rare instances, what appear to be infertile gecko eggs may eventually hatch. Therefore, it is advisable to incubate all eggs until it becomes evident that they are not viable. Gecko eggs can sometimes look healthy initially but then deteriorate during the incubation period. Signs of deterioration include mould, shrinkage, discolouration, dents, foul odour, or leakage.
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Frequently asked questions
Candling is the process of examining gecko eggs to observe the growth of embryos inside them.
You should look for the "cheerio" and veins. The cheerio is a reddish circle that indicates fertility. If you can't find the cheerio, the egg should be incubated in the same position it was found, with the cheerio side up, or removed and marked with its original orientation.
It is recommended to candle crested gecko eggs at one week and then again at 74 days to observe the growth of the embryos.
