A Genome-scale Approach to Phylogeny of Ray-finned Fish (Actinopterygii) and Molecular Systematics of Clupeiformes
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منابع مشابه
Hox clusters of the bichir (Actinopterygii, Polypterus senegalus) highlight unique patterns of sequence evolution in gnathostome phylogeny.
Teleost fishes have extra Hox gene clusters owing to shared or lineage-specific genome duplication events in rayfinned fish (actinopterygian) phylogeny. Hence, extrapolating between genome function of teleosts and human or even between different fish species is difficult. We have sequenced and analyzed Hox gene clusters of the Senegal bichir (Polypterus senegalus), an extant representative of t...
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With about 24,000 extant species, teleosts are the largest group of vertebrates. They constitute more than 99% of the ray-finned fishes (Actinopterygii) that diverged from the lobe-finned fish lineage (Sarcopterygii) about 450 MYA. Although the role of genome duplication in the evolution of vertebrates is now established, its role in structuring the teleost genomes has been controversial. At le...
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component of the evolutionary transformation of functional design in ray-finned fishes (Actinopterygii). Documenting phylogenetic patterns in the structure of the paired and median fins, and interpreting the functional significance of such patterns, has been the subject of ongoing study by systematists, functional morphologists and hydrodynamicists (e.g. Breder, 1926; Harris, 1953; Aleev, 1969;...
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Comparative genomics has shown that ray-finned fish (Actinopterygii) contain more copies of many genes than other vertebrates. A large number of these additional genes appear to have been produced during a genome duplication event that occurred early during the evolution of Actinopterygii (i.e. before the teleost radiation). In addition to this ancient genome duplication event, many lineages wi...
متن کاملThe complete mitochondrial DNA sequence of the bichir (Polypterus ornatipinnis), a basal ray-finned fish: ancient establishment of the consensus vertebrate gene order.
The evolutionary position of bichirs is disputed, and they have been variously aligned with ray-finned fish (Actinopterygii) or lobe-finned fish (Sarcopterygii), which also include tetrapods. Alternatively, they have been placed into their own group, the Brachiopterygii. The phylogenetic position of bichirs as possibly the most primitive living bony fish (Osteichthyes) made knowledge about thei...
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