This invention belongs to the field of
biotechnology, specifically relating to a non-harmful
DNA extraction method for *
Scylla serrata* (scuttica crab) and its application. This invention successfully achieves non-harmful
DNA extraction from *
Scylla serrata* by collecting its swimming leg setae, significantly reducing the
impact on the crab's activity and ensuring its survival after sampling. The extraction method of this invention is non-lethal to *
Scylla serrata* and possesses good
repeatability and high accuracy. Extracting
DNA from *Scylla serrata* using its swimming leg setae ensures that the crab's activity remains unchanged, allowing it to survive and perform its life activities normally. Obtaining the DNA sequence of *Scylla serrata* and performing
gene markers provides a foundation for
genomic selection breeding, facilitating parent selection and
offspring breeding in mud crab
genetics.