Results 1 to 10 of about 64 (60)

C-banding, fluorescent staining and NOR location in holokinetic chromosomes of bugs of the Neotropical genus Antiteuchus (Heteroptera: Pentatomidae: Discocephalinae)

open access: yesEuropean Journal of Entomology, 2006
Different cytogenetic techniques including C-banding, base-specific fluorochromes and silver nitrate staining were used to compare the karyotypes of three species of bugs, representatives of the Neotropical genus Antiteuchus, namely A.
Maria José de Souza
exaly   +3 more sources

Comparative FISH mapping of ribosomal DNA clusters and TTAGG telomeric sequences to holokinetic chromosomes of eight species of the insect order Psocoptera [PDF]

open access: yesComparative Cytogenetics, 2019
Repetitive DNAs are the main components of eukaryotic genome. We mapped the 18S rDNA and TTAGG telomeric probe sequences by FISH to meiotic chromosomes of eight species of the order Psocoptera considered a basal taxon of Paraneoptera: Valenzuela ...
Valentina Kuznetsova   +2 more
exaly   +4 more sources

Histone H3 Methylation and Autosomal vs. Sex Chromosome Segregation During Male Meiosis in Heteroptera

open access: yesFrontiers in Ecology and Evolution, 2022
Heteropteran insects exhibit a remarkable diversity of meiotic processes, including coexistence of different chromosomes types with different behavior during the first meiotic division, non-chiasmatic segregation, and inverted meiosis.
María Ayelen Toscani   +3 more
doaj   +1 more source

Exploring chromosome evolution in 250 million year old groups of dragonflies and damselflies (Insecta:Odonata)

open access: yesMolecular Ecology, Volume 32, Issue 21, Page 5785-5797, November 2023., 2023
Abstract Using recently published chromosome‐length genome assemblies of two damselfly species, Ischnura elegans and Platycnemis pennipes, and two dragonfly species, Pantala flavescens and Tanypteryx hageni, we demonstrate that the autosomes of Odonata have undergone few fission, fusion, or inversion events, despite 250 million years of separation.
Ethan R. Tolman   +6 more
wiley   +1 more source

The meso‐octoploid Heliophila variabilis genome sheds a new light on the impact of polyploidization and diploidization on the diversity of the Cape flora

open access: yesThe Plant Journal, Volume 116, Issue 2, Page 446-466, October 2023., 2023
SUMMARY Although the South African Cape flora is one of the most remarkable biodiversity hotspots, its high diversity has not been associated with polyploidy. Here, we report the chromosome‐scale genome assembly of an ephemeral cruciferous species Heliophila variabilis (~334 Mb, n = 11) adapted to South African semiarid biomes. Two pairs of differently
Yile Huang   +5 more
wiley   +1 more source

Jekyll or Hyde? The genome (and more) of Nesidiocoris tenuis, a zoophytophagous predatory bug that is both a biological control agent and a pest

open access: yesInsect Molecular Biology, Volume 30, Issue 2, Page 188-209, April 2021., 2021
The annotated genome of predatory mirid Nesidiocoris tenuis presented here was generated from a single female insect using a linked‐read sequencing and assembly strategy. Potential contaminants and/or endosymbionts were identified during assembly decontamination along with putative lateral gene transfer candidates.
K. B. Ferguson   +10 more
wiley   +1 more source

A review on intraspecific karyomorphological variations of m chromosomes in family Libellulidae (Anisoptera: Odonata)

open access: yesJournal of Basic and Applied Zoology, 2022
Background Family Libellulidae is one of the largest families of suborder Anisoptera (Odonata) including 1035 species of 144 genera throughout the world.
Gurinder Kaur Walia, Hardeep Singh
doaj   +1 more source

High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata) [PDF]

open access: yesComparative Cytogenetics, 2021
The American dragonfly genus Orthemis Hagen, 1861 is mainly found in the Neotropical region. Seven of 28 taxonomically described species have been reported from Argentina.
Liliana M. Mola   +2 more
doaj   +3 more sources

Sex-Linked Chromosome Heterozygosity in Males of Tityus confluens (Buthidae): A Clue about the Presence of Sex Chromosomes in Scorpions. [PDF]

open access: yesPLoS ONE, 2016
Scorpions of the genus Tityus show holokinetic chromosomes, achiasmatic male meiosis and an absence of heteromorphic sex chromosomes, like all Buthidae. In this work, we analysed the meiotic behaviour and chromosome rearrangements of a population of the ...
Renzo Sebastián Adilardi   +2 more
doaj   +1 more source

Cytogenetics of the true bug infraorder Cimicomorpha (Hemiptera, Heteroptera): a review

open access: yesZooKeys, 2011
The Cimicomorpha is one of the largest and highly diversified infraorders of the Heteroptera. This group is also highly diversified cytogenetically and demonstrates a number of unusual cytogenetic characters such as holokinetic chromosomes; m-chromosomes;
Valentina Kuznetsova   +3 more
doaj   +1 more source

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