An annotated compilation of all chromosomal works (cytoconspectus) on the Simuliidae is presented, covering 577 species including 541 formally named species-24.8% of the world's extant nominal species-and 36 formally unnamed species. The first published record of polytene chromosomes in a simuliid appeared in 1919, followed by an imposing body of chromosomal research, most notably since 1956. T...

In the study of chironomids in Armenia several species of Orthocladiinae subfamily of Cricotopus genus, Diamesinae subfamily of Diamesa genus, and Chironominae subfamily of Chironomus genus, have been identified. In the Cricotopus genus two sibling species were found, not distinguishable by larval morphological features, but clearly distinct cytogenetically. Keywords—Armenia, Chironomidae, kary...

A new strategy for analyzing chromosomal evolution in primates is presented using chromosomal in situ suppression (CISS) hybridization. Biotin-labeled DNA libraries from flow-sorted human chromosomes are hybridized to chromosome preparations of catarrhines, platyrrhines, and prosimians. By this approach rearrangements of chromosomes that occurred during hominoid evolution are visualized directl...

A cytogenetic characterization, including heterochromatin content, and the analysis of the location of rDNA genes, was performed in Largus fasciatus Blanchard, 1843 and L. rufipennis Laporte, 1832. Mitotic and meiotic analyses revealed the same diploid chromosome number 2n = 12 + X0/XX (male/female). Heterochromatin content, very scarce in both species, revealed C-blocks at both ends of autosom...

Atlantic Forest, in the eastern coast of Brazil, is a hotspot of biodiversity of mammals, and Parque Estadual da Serra do Mar (PESM) is the largest continuous area of this biome. Here, we characterized the karyotype composition of the small mammals from Santa Virgínia, a region in the northern part of PESM. Specimens were collected from July 2008 to September 2009. We identified 17 species (13 ...

ABSTRACT: Cytotaxonomy is useful for separating sister and cryptic species as well figuring out the evolutionary relationship between taxa. Family Coenagrionidae considered one of largest zygopteran families under order Odonata. Globally, a lot investigation has been undertaken on family significantly contributed by biologists throughout world. Type number n=14 with XO-XX type sex determining m...

Lobsters are ubiquitous, economically important decapod crustaceans with apparently conflicting evolutionary relationships. Here, we describe the chromosomal location of major (45S rDNA) and minor (5S ribosomal gene families in four species Astacidea five Achelata, using two-color FISH. The family is located 4–16 sites per diploid chromosome set, Nephrops norvegicus (Nephropidae) showing highes...

Nearly 260 taxa and chromosomal races of subfamily Chrysomelinae have been chromosomally analyzed showing a wide range of diploid numbers from 2n = 12 to 2n = 50, and four types of male sex-chromosome systems. with the parachute-like ones Xy(p) and XY(p) clearly prevailing (79.0%), but with the XO well represented too (19.75%). The modal haploid number for chrysomelines is n = 12 (34.2%) althou...

In this study, cytogenetic properties of A. escherichii were investigated using standard Giemsa staining, C-banding, and Ag-NOR staining techniques. The karyotype Sakarya bleak, the diploid chromosome number was 2n = 50, consists six pairs metacentric, 12 submetacentric, seven acrocentric autosomes (NF=86). No morphologically distinguishable heteromorphic sex chromosomes detected in karyotype. ...