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How Precise are Size-Based Age Estimations in the Sand Lizard (Lacerta Agilis)?
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How Precise are Size-Based Age Estimations in the Sand Lizard (Lacerta Agilis)?Reptiles show a positive correlation between age and body size and it is common practice to infer the age of an animal from its size. However, the growth rate often differs between individuals, thus such practice may lead to false conclusions. Because age of an animal is a very important factor in many ecological studies, it should be determined with a minimum of error. Here, we compare the body size distribution among different age classes of the sand lizard (Lacerta agilis) to infer if it is possible to correctly determine their age on the basis of the body length. Our results show that the average error in age estimation on the basis of the lizard size is 1.36 year which is approximately 1/3 the average sand lizard life span.
Title: How Precise are Size-Based Age Estimations in the Sand Lizard (Lacerta Agilis)?
Description:
How Precise are Size-Based Age Estimations in the Sand Lizard (Lacerta Agilis)?Reptiles show a positive correlation between age and body size and it is common practice to infer the age of an animal from its size.
However, the growth rate often differs between individuals, thus such practice may lead to false conclusions.
Because age of an animal is a very important factor in many ecological studies, it should be determined with a minimum of error.
Here, we compare the body size distribution among different age classes of the sand lizard (Lacerta agilis) to infer if it is possible to correctly determine their age on the basis of the body length.
Our results show that the average error in age estimation on the basis of the lizard size is 1.
36 year which is approximately 1/3 the average sand lizard life span.
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