Complete Mitochondrial Genomes of Two Species of Sea Urchin: Strongylocentrotus nudus and Hemicentrotus pulcherrimus (Strongylocentrotidae, Echinoida)

Title
Complete Mitochondrial Genomes of Two Species of Sea Urchin: Strongylocentrotus nudus and Hemicentrotus pulcherrimus (Strongylocentrotidae, Echinoida)
Author(s)
정길아; 이유철; 이윤호
KIOST Author(s)
Lee, Youn Ho(이윤호)
Publication Year
2012-08-16
Abstract
The sea urchin Strongylocentrotus intermedius (A. Agassiz, 1863) is an ecologically and economically important species inhabiting the shallow water hard substrates in the northwest Pacific including the East Sea. In this study we attempted to analyze the genetic structure of the sea urchin with samples from Jumunjin, east coast of Korea using mitochondrial DNA sequences. First, a total of 20 individuals were analyzed for their COI sequences, which resulted in 10 haplotypes. Phylogenetic tree of the haplotypes showed that there are two genetic groups. These two genealogies in S. intermedius were also found sympatrically in the northern part of the East Sea near Primorye, Russia. Secondly, the whole mitochondria genomes of the two haplo-groups were sequenced and compared gene by gene for examination of the divergence rate. Nucleotide sequence divergence was the highest in the ND5 gene of about 1.7% per site and the lowest in the ATP8 gene which showed no nucleotide substitution. Among the 13 coding genes, amino acid changing nucleotide substitution occurred only in ND1 (1 substitution), ND2 (2), ATP6 (1), ND4 (3), and ND5 (8). This study will help understand what kind of selection is acting on the evolution of the sea urchin mitochondrial DNA, and how long this polymorphism have been maintained in the S. intermedius species.ted to analyze the genetic structure of the sea urchin with samples from Jumunjin, east coast of Korea using mitochondrial DNA sequences. First, a total of 20 individuals were analyzed for their COI sequences, which resulted in 10 haplotypes. Phylogenetic tree of the haplotypes showed that there are two genetic groups. These two genealogies in S. intermedius were also found sympatrically in the northern part of the East Sea near Primorye, Russia. Secondly, the whole mitochondria genomes of the two haplo-groups were sequenced and compared gene by gene for examination of the divergence rate. Nucleotide sequence
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41058
Bibliographic Citation
제67회 한국생물과학협회 정기학술대회, pp.130, 2012
Publisher
한국생물과학협회
Type
Conference
Language
English
Publisher
한국생물과학협회
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