Bii o ṣe le pinnu ọjọ-ori ilẹ Ijapa Central Asia ni ile (Fọto)
In captivity, the life expectancy of reptiles is significantly reduced, so future owners want to know the exact age of the purchased pet.
Let’s figure out how to determine the age of a land tortoise at home and whether it is possible to calculate the age of a reptile in human years.
Awọn akoonu
Awọn ọna akọkọ fun ipinnu ọjọ ori
In order to determine the age of the Central Asian tortoise, use the following methods:
- determination by the size of the shell, which increases every year by 2 cm;
- counting annular grooves on the carapace, increasing by 2-3 every year of life;
- examination of the appearance of a reptile, which changes with maturity.
Method 2 is recognized as the most reliable, but it also depends on the conditions in which the turtle is kept.
Ikarahun ipari
The age of a land tortoise can be determined by the length of the shell by measuring the distance between the 2 extreme points of the carapace.
The shell of a newborn turtle is only 3-3,5 cm. After a year, the size increases by 2 cm and continues to grow at the same pace up to 18 cm. When this indicator is reached, growth stops, preventing age determination.
Depending on the length of the shell, the age of the Central Asian land tortoise is as follows:
Gigun ikarahun (cm) | Ọjọ ori (ọdun) |
3-3,5 | kere ju 1 |
3,5-6 | 1-2 |
6-8 | 2-3 |
8-10 | 3-4 |
10-12 | 4-5 |
12-14 | 5-6 |
14-16 | 5-7 |
16-18 | 7-8 |
sibẹsibẹ 18 | diẹ sii 8 |
IMPORTANT! If the length of the shell reaches 18 cm, then a more accurate age indicator can only be understood with the help of shell rings.
Carapace rings
In order to find out how old a land tortoise is, count the growth rings on the scutes of the shell.
Intensive growth and molting of turtles in the first 2 years of life affect the shell pattern, forming annular grooves on the surface. In a young reptile younger than 1 year old, 2-3 rings appear on each scale, and by the age of 2 there are already 6. After that, the intensity decreases, and the annual addition of rings is 1-2 pieces.
To determine the number of years, use the following instruction:
- Count the growth rings using several scales.
- Calculate the arithmetic mean of the counted values.
- Subtract from the resulting number 6 annular grooves obtained in the first 2 years of life.
- Divide the resulting number by 1,5 – the average number of rings appearing after 2 years.
Apeere: Ti itumo isiro ba jẹ 21, lẹhinna ọsin jẹ ọmọ ọdun 10. Ilana fun iṣiro yoo dabi eleyi: (21-6)/1,5=10
The downside of this method is the difficulty in counting the ring-shaped furrows in older reptiles that lose the clarity of the lines on the carapace.
irisi
The ring-shaped grooves and the length of the carapace are determined by the conditions in which the reptile is kept. The final performance is affected by water quality, feeding, terrarium parameters and many other factors.
The approximate number of years can also be determined by the appearance of the animal:
Ọjọ ori ti awọn ijapa nipasẹ awọn iṣedede eniyan
In the wild, Central Asian turtles live for about 50 years, and at home only 15. Rare individuals live up to 30 years with a very careful attitude and competent care from the owner.
In order to calculate the age of a reptile by human standards, we will start from the following indicators:
- Average life expectancy. In a domestic turtle, it is 15 years, in humans – about 70 years.
- ti ẹkọ iwulo ẹya-ara. Ni ile, reptiles di ibalopo ogbo nipa awọn ọjọ ori ti 5. Ninu eda eniyan, ibalopo ìbàlágà ti wa ni ami ni 15 ọdun ti ọjọ ori.
Gẹgẹbi awọn itọkasi ti a ṣe sinu akọọlẹ, ipin isunmọ yoo dabi eyi:
ori ijapa (ọdun) | Ọjọ ori ni awọn ofin eniyan (awọn ọdun) |
1 | 3 |
2 | 6 |
3 | 9 |
4 | 12 |
5 | 15 |
6 | 27 |
7 | 31 |
8 | 36 |
9 | 40 |
10 | 45 |
11 | 50 |
12 | 54 |
13 | 59 |
14 | 63 |
15 | 70 |
Unlike in the wild, where puberty occurs only at 10 years of age, domestic living conditions that shorten overall life expectancy encourage early maturity, allowing offspring to be produced before death.
Due to the rapid maturation of the turtle, wear and tear of the body begins early, reflected in a change in the ratio after reaching sexual maturity.
IMPORTANT! Due to too many factors affecting life expectancy, the figures presented are not absolute values and are only suitable for approximate calculation.
Iyasọtọ
The considered methods have many nuances, but they allow you to calculate the approximate age of the pet. Before buying a turtle, check the age with the seller and be sure to check the information yourself.
How to find out how old a land tortoise is
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