BACKGROUND The cytochrome P450 (CYP) superfamily is a multifunctional hemethiolate enzyme that is widely distributed from Bacteria to Eukarya. The CYP3 family contains mainly the four subfamilies CYP3A, CYP3B, CYP3C and CYP3D in vertebrates; however, only the Actinopterygii (ray-finned fish) have all four subfamilies and detailed understanding of the evolutionary relationship of Actinopterygii ...

Citation: Davesne D, Gallut C, Barriel V, Janvier P, Lecointre G and Otero O (2016) The Phylogenetic Intrarelationships of Spiny-Rayed Fishes (Acanthomorpha, Teleostei, Actinopterygii): Fossil Taxa Increase the Congruence of Morphology with Molecular Data. Front. Ecol. Evol. 4:129. doi: 10.3389/fevo.2016.00129 The Phylogenetic Intrarelationships of Spiny-Rayed Fishes (Acanthomorpha, Teleostei, ...

Genomic expansions via regional gene duplications and polyploidization events have been implicated as catalysts for rapid cladogenetic speciation in some fish taxa, but any general relationships between genome sizes and patterns of evolutionary radiation remain poorly characterized. Here we examine empirical correlations between genome size and species richness (number of extant species within ...

The ray-finned fishes (Actinopterygii) seem to have two copies of many tetrapod (Sarcopterygii) genes. The origin of these duplicate fish genes is the subject of some controversy. One explanation for the existence of these extra fish genes could be an increase in the rate of independent gene duplications in fishes. Alternatively, gene duplicates in fish may have been formed in the ancestor of a...

The study describes the range extension of the sea horse Hippocampus fuscus from the south to north east coastal waters of the India, Bay of Bengal. After 99 years since initial discovery, the Hippocampus fuscus was reported within the southern sector of the Chilika Lake. The extension range may be due to the East India Coastal Current of the Bay of Bengal and the predominance of extensive sea ...

The new neopterygian genus Ticinolepis, including two new species T. longaeva and T. crassidens is described from Middle Triassic carbonate platform deposits of the Monte San Giorgio. The anatomy of this fish shows a mosaic of halecomorph and ginglymodian characters and, thus, the new taxon probably represents a basal holostean. During the latest Anisian to earliest Ladinian the two new species...

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...

The ray-finned fishes (Actinopterygii) seem to have two copies of many tetrapod (Sarcopterygii) genes. The origin of these duplicate fish genes is the subject of some controversy. One explanation for the existence of these extra fish genes could be an increase in the rate of independent gene duplications in fishes. Alternatively, gene duplicates in fish may have been formed in the ancestor of a...

Length-weight relationship of four fish species the genera Pseudorhombus, Plicofollis and Scarus (Actinopterygii: Paralichthyidae, Ariidae Scaridae) from Persian Gulf, Iran

Analysis of maximum depth of occurrence of 11 952 marine fish species shows a global decrease in species number (N) with depth (x; m): log10 N = -0·000422x + 3·610000 (r(2)  = 0·948). The rate of decrease is close to global estimates for change in pelagic and benthic biomass with depth (-0·000430), indicating that species richness of fishes may be limited by food energy availability in the deep...