In anticipation of the current biodiversity crisis, it has become critical to rapidly and accurately assess biodiversity. DNA barcoding has proved efficient in facilitating the discovery and description of thousands of species and also provides insight into the dynamics of biodiversity. Here, we sequenced a portion of the mitochondrial cytochrome c oxidase subunit I (COI) gene from all morphosp...

The clustering coefficient C of a network, which is a measure of direct connectivity between neighbors of the various nodes, ranges from 0 (for no connectivity) to 1 (for full connectivity). We define extended clustering coefficients C(h) of a small-world network based on nodes that are at distance h from a source node, thus generalizing distance-1 neighborhoods employed in computing the ordina...

Sequences of the cytochrome c oxidase subunit I (COI) mitochondrial gene from adults of 22 Culex (Culex) species from Argentina and Brazil were employed to assess species identification and to test the usefulness of COI for barcoding using the best close match (BCM) algorithm. A pairwise Kimura two-parameter distance matrix including the mean intra and interspecific distances for 71 COI barcode...

BACKGROUND DNA barcoding based on the mitochondrial cytochrome oxidase subunit I gene (cox1 or COI) has been successful in species identification across a wide array of taxa but in some cases failed to delimit the species boundaries of closely allied allopatric species or of hybridising sister species. METHODOLOGY/PRINCIPAL FINDINGS In this study we extend the sample size of prior studies in ...

DNA barcoding has been widely used in species identification and biodiversity research. A short fragment of the mitochondrial cytochrome c oxidase subunit I (COI) sequence serves as a DNA bio-barcode. We collected DNA barcodes, based on COI sequences from 156 species (529 sequences) of fish, insects, and shellfish. We present results on phylogenetic relationships to assess biodiversity the in t...

ALinear binary [n, k]-code is a k-dimensional subspaces of the n-dimensional vector space GF (2) over the finite field GF (2) with 2 elements. The 2 codewords of length n are the elements of the subspace, they are written as row vectors. The weight wt(c) of a codeword is defined to be the number of nonzero entries of c and the minimum distance dist(C) of a code C is the minimum of all weights o...

dna barcoding based on a standardized region of 648 base pairs of mitochondrial dnasequences from cytochrome c oxidase 1 (cox1) is proposed for animal species identification.recent studies suggested that dna barcoding has been effective for identifying 94% of birdspecies. the proposed threshold of 10 times the average intraspecific variation could be used forthe identification and delimitation ...