Satellitome analysis on (Arvicolinae) genome, a mammal species with high karyotype and sex chromosome variations.

The voles of the / species complex (Arvicolinae) display extensive karyotypic variation, in the number of autosomes and the morphology of sex chromosomes. We analyzed the satellitome of and identified 17 satellite DNA (satDNA) families, corresponding to 6.704% of the genome.

Genome assemblies and other genomic tools for understanding insect adaptation.

Insects, the most diverse group of animals, exhibit remarkable adaptability, playing both crucial and problematic roles in ecosystems. Recent advancements in genomic technologies, such as high-throughput sequencing, have provided unprecedented insights into the genetic foundations of insect adaptation. This review explores key methodologies, including de novo and reference-guided genome assemblies, and highlights cutting-edge technologies like second- and third-generation sequencing and hybrid techniques.

A Comparative Analysis of Mitogenomes in Species of the Complex and Other Species of the Genus (Formicidae, Dolichoderinae).

Using next-generation sequencing data, the complete mitogenomes of six species from the genus were assembled. This study explores the mitochondrial genomes of species, among them the five species from the complex, comparing them with each other and with other species from Dolichoderinae subfamily to understand their evolutionary relationships and evolution. mitochondrial genomes contain the typical set of 13 protein-coding genes, two ribosomal RNA genes, 22 transfer RNAs, and the A + T-rich control region.

Satellitome Analysis of (Coleoptera): Revealing Centromeric Turnover and Potential Chromosome Rearrangements in a Comparative Interspecific Study.

Eukaryotic genomes exhibit a dynamic interplay between single-copy sequences and repetitive DNA elements, with satellite DNA (satDNA) representing a substantial portion, mainly situated at telomeric and centromeric chromosomal regions. We utilized Illumina next-generation sequencing data from to investigate its satellitome. Cytogenetic mapping via fluorescence in situ hybridization was performed for the most abundant satDNA families.

Heterochromatin Is Not the Only Place for satDNAs: The High Diversity of satDNAs in the Euchromatin of the Beetle (Coleoptera, Chrysomelidae).

The satellitome of the beetle Linneo, 1758 has been characterized through chromosomal analysis, genomic sequencing, and bioinformatics tools. C-banding reveals the presence of constitutive heterochromatin blocks enriched in A+T content, primarily located in pericentromeric regions. Furthermore, a comprehensive satellitome analysis unveils the extensive diversity of satellite DNA families within the genome of .

Exploring horizontal transfer of mariner transposable elements among ants and aphids.

Aphids and ants are mutualistic species with a close space-time relationship, which may facilitate the occurrence of horizontal transfer events between these insect groups. Myrmar-like mariner elements were previously isolated from two ant (Myrmica ruginodis and Tapinoma ibericum) and two aphid species (Aphis fabae and Aphis hederae). The aim of this work is to determine the presence of Myrmar-like mariner elements in new ant and aphid species, as well as to analyze the likelihood of horizontal transfer events between these taxa.

The spread of satellite DNAs in euchromatin and insights into the multiple sex chromosome evolution in Hemiptera revealed by repeatome analysis of the bug Oxycarenus hyalinipennis.

Satellite DNAs (satDNAs) are highly repeated tandem sequences primarily located in heterochromatin, although their occurrence in euchromatin has been reported. Here, our aim was to advance the understanding of satDNA and multiple sex chromosome evolution in heteropterans. We combined cytogenetic and genomic approaches to study, for the first time, the satDNA composition of the genome in an Oxycarenidae bug, Oxycarenus hyalinipennis.

Making the Genome Huge: The Case of , a Triatominae Species with More than 50% of Its Genome Full of Satellite DNA.

The genome of Romaña & Abalos 1947 is the largest within Heteroptera, approximately two to three times greater than other evaluated Heteroptera genomes. Here, the repetitive fraction of the genome was determined and compared with its sister species Klug 1834, in order to shed light on the karyotypic and genomic evolution of these species. The repeatome analysis showed that the most abundant component in its genome is satellite DNA, which makes up more than half of the genome.