Extensive mitochondrial gene arrangements in coleoid Cephalopoda and their phylogenetic implications
Autor: | Akasaki, T., Nikaido, Masato, Tsuchlya, K., Segawa, S., Hasegawa, M., Okada, N. |
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Rok vydání: | 2006 |
Předmět: |
0106 biological sciences
Cuttlefish Mitochondrial DNA Lineage (evolution) gene rearrangement cephalopods DNA Mitochondrial 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Monophyly Phylogenetics evolution Gene Order DNA-sequence data Genetics rearrangements Animals protein evolution genome Molecular Biology Phylogeny Ecology Evolution Behavior and Systematics DNA Primers 030304 developmental biology Coleoidea Likelihood Functions 0303 health sciences model Base Sequence Phylogenetic tree biology Gene rearrangement biology.organism_classification mitochondria tree selection Cephalopoda Evolutionary biology loliginid squids cephalopoda maximum-likelihood amino-acid substitution mollusca |
Zdroj: | Molecular Phylogenetics and Evolution, 38 (3). pp. 648-658. |
ISSN: | 1055-7903 |
Popis: | We determined the complete mitochondrial genomes of five cephalopods of the Subclass Coleoidea (Suborder Oegopsida: Watasenia scintillans, Todarodes pacificus, Suborder Myopsida: Sepioteuthis lessoniana, Order Sepiida: Sepia officinalis, and Order Octopoda: Octopus ocellatus) and used them to infer phylogenetic relationships. In our Maximum Likelihood (ML) tree, sepiids (cuttlefish) are at the most basal position of all decapodiformes, and oegopsids and myopsids form a monophyletic clade, thus supporting the traditional classification of the Order Teuthida. We detected extensive gene rearrangements in the mitochondrial genomes of broad cephalopod groups. It is likely that the arrangements of mitochondrial genes in Oegopsida and Sepiida were derived from those of Octopoda, which is thought to be the ancestral order, by entire gene duplication and random gene loss. Oegopsida in particular has undergone long-range gene duplications. We also found that the mitochondrial gene arrangement of Sepioteuthis lessoniana differs from that of Loligo bleekeri, although they belong to the same family. Analysis of both the phylogenetic tree and mitochondrial gene rearrangements of coleoid Cephalopoda suggests that each mitochondrial gene arrangement was acquired after the divergence of each lineage. |
Databáze: | OpenAIRE |
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