Pneumocystis jiroveci (human-derived P. carinii) is an opportunistic pathogenic fungus which causes pneumonia and is life-threatening in immunocompromised individuals. Spontaneously acquired resistance to atovaquone, a hydroxynaphthoquinone that is used to treat P. jiroveci infections, was linked to mutations in the mitochondrially encoded cytochrome b gene. Because P. jiroveci cannot be easily...

The decline of ornamental fish populations in their native habitats due to over-fishing has brought about the development of ornamental fish aquaculture, to which fish of the Anabantoidei suborder are important contributors. The genetic variations among species of this suborder were examined by mitochondrial gene sequencing analysis using the cytochrome b and 12S genes. According to the cytochr...

DNA sequences for the mitochondrial cytochrome b gene were determined for 13 species of sharks. Rates and patterns of amino acid replacement are compared for sharks and mammals. Absolute rates of cytochrome b evolution are six times slower in sharks than in mammals. Bivariate plots of the number of nonsynonymous and silent transversions are indistinguishable in the two groups, however, suggesti...

The DNA sequence of the cytochrome b (rob) gene region of Trimorphomyces papilionaceus mitochondrial DNA has been determined. The cob gene is interrupted by an intron of 1267 bp, which has an open reading frame of 897 bp contiguous to the upstream exon. The intron belongs to group IB and contains a reading frame with a GIY-10-YVG motif. The deduced amino acid sequence shows 52.-40% homology wit...

Three new species, Cobitis almadae sp. nov., atlantica and mellaria nov. are described on the basis of morphological genetic traits. is restricted to Sizandro Drainage in Portugal can be distinguished from other species through a combination morphometric traits including large low peduncle depth, lateral ethmoid (suborbital spine) well developed with long narrow mediocaudal, laterocaudal medior...

To successfully implement environmental DNA-based (eDNA) diversity monitoring, the completeness and accuracy of reference databases used for taxonomic assignment eDNA sequences are among challenges to be tackled. Here, we have developed a workflow that evaluates current status GenBank marine fishes. For given combination species barcodes, gap analysis is performed potentially erroneous identifi...

Direct sequencing of mitochondrial DNA (mtDNA) following amplification using the polymerase chain reaction (PCR) has found widespread use in population genetic and phylogenetic research over the past few years. Recently, nuclear copies of mitochondrial genes have been reported in diverse eukaryotic species, often confounding such research (reviewed in [2,3]). Under certain circumstances, nuclea...

The phylogenetic relationships among seven Callosciurus species from the Indochina Peninsula, including C. honkhoaiensis which is endemic to Hon Khoai Island, were studied using complete mitochondrial cytochrome b gene sequences (1140 bases). We primarily focused on position of pygerythrus, distributed in western part peninsula. identified two main lineages: 1) caniceps, honkhoaiensis, inornatu...

The partial sequence (402 bp) of cytochrome b gene has been proved to be of value in the identification of animal species from unknown samples. In this study, the analysis of 402 bp sequences was used to confirm the materials of 87 processed meat products. There were 11 samples that did not conform to the original indicated materials. The inconsistent ratio was about 12.6 %. There were 9 and 10...