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The mitochondrial genomes of Cambaroides similis and Procambarus clarkii (Decapoda: Astacidea: Cambaridae): Phylogenetic implications for Reptantia

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Title
The mitochondrial genomes of Cambaroides similis and Procambarus clarkii (Decapoda: Astacidea: Cambaridae): Phylogenetic implications for Reptantia
Other Titles
북반구 담수가재의 분류학적 위치를 통한 기는 가재류의 계통유연관계 정립
Authors
Kim, Sanghee
Choi, Han-Gu
Jaeho Jung
Joongki Park
Dongha Ahn
Gisik Min
Sejoo Kim
Sultana Tahera
Mihyun Park
Subject
Evolutionary Biology; Zoology
Keywords
Northern crayfish; Reptantia; phylogeny; inversion; mitochondrial genome; strand-specific bias
Issue Date
2012
Publisher
The Royal swedish academy of sciences
Citation
Kim, Sanghee, et al. 2012. "The mitochondrial genomes of Cambaroides similis and Procambarus clarkii (Decapoda: Astacidea: Cambaridae): Phylogenetic implications for Reptantia". Zoologica Scripta, 41(1): 281-292.
Abstract
We determined the complete mitochondrial (mt) genome sequences of two northern hemisphere freshwater crayfish species, Cambaroides similis and Procambarus clarkii (Decapoda: Astacidea: Cambaridae). These species have an identical gene order with typical metazoan mt genome compositions. However, their gene arrangement was very distinctive compared to the pan-crustacean ground pattern due to the presence of a long inverted block which included 19 coding genes and a control region (CR). Because the CR was inverted, their nucleotide frequencies showed a reversed strand-specific bias compared to the other decapods. Based on a comparative analysis of mt genome arrangements between southern and northern hemisphere crayfish, and their putative close marine relative (Homarus americanus, a true lobster), we postulated that the ancestor of freshwater crayfish had a typical pan-crustacean mtDNA gene order, similar to its marine relatives. Based on this assumption, we traced the most parsimonious gene rearrangement scenario of the northern hemisphere crayfish. In a phylogenetic study on the infraordinal relationships in reptan decapods, the lineage Lineata (Thalassinidea (Brachyura, Anomura)) was well supported, while the infraorder positions of Achelata and Astacidea remained unidentified.rder with typical metazoan mt genome compositions. However, their gene arrangement was very distinctive compared to the pan-crustacean ground pattern due to the presence of a long inverted block which included 19 coding genes and a control region (CR). Because the CR was inverted, their nucleotide frequencies showed a reversed strand-specific bias compared to the other decapods. Based on a comparative analysis of mt genome arrangements between southern and northern hemisphere crayfish, and their putative close marine relative (Homarus americanus, a true lobster), we postulated that the ancestor of freshwater crayfish had a typical pan-crustacean mt
URI
http://repository.kopri.re.kr/handle/201206/6408
DOI
http://dx.doi.org/10.1111/j.1463-6409.2012.00534.x
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