Results 31 to 40 of about 123,490 (101)

First cytogenetic study of Coleorrhyncha: Meiotic complement of Xenophyes cascus (Hemiptera: Peloridiidae)

European Journal of Entomology, 2014
Cytogenetic information on the hemipteran suborder Coleorrhyncha is here provided for the first time. The New Zealand peloridiid species, Xenophyes cascus Bergroth, 1924 (Hemiptera: Coleorrhyncha: Peloridiidae), was found to display testes with a single ...
Snejana GROZEVA, Valentina KUZNETSOVA, Viktor HARTUNG   +2 more
doaj   +1 more source

Chromosomal location of heterochromatin and 45S rDNA sites in four South American triatomines (Heteroptera: Reduviidae)

Comparative Cytogenetics, 2010
The Triatominae are distributed in Brazilian regions and are the vector of Chagas disease. This group is also characterized by lower karyotype variability, occurrence of holokinetic chromosomes and inverted meiosis of the sex chromosomes.
Vanessa Bardella, Vanessa Bardella, M Gaeta, A Vanzela, M Azeredo-Oliveira   +4 more
doaj   +1 more source

Meiotic Analysis of Gomphidae Species Sheds Light on the Large X Chromosome of the Family (Anisoptera, Odonata)

Diversity, 2022
In most Anisoptera families, the modal diploid number is 25 in males (24 autosomes + X), and the X chromosome is one of the smallest elements of the complement.
Liliana M. Mola, Pablo J. Rebagliati, María F. Fourastié, Silvia S. Agopian   +3 more
doaj   +1 more source

Data from: Holokinetic drive: centromere drive in chromosomes without centromeres

, 2014
Similar to how the model of centromere drive explains the size and complexity of centromeres in monocentrics (organisms with localized centromeres), our model of holokinetic drive is consistent with the divergent evolution of chromosomal size and number ...
Zedek, František, Bureš, Petr
core   +1 more source

Comparative Meiotic Studies in Triatoma sordida (Stål) and T. guasayana Wygodzinsky & Abalos (Reduviidae, Heteroptera)

Memorias do Instituto Oswaldo Cruz, 1998
Triatoma sordida and T. guasayana are competent Trypanosoma cruzi vectors, with overlapping distribution areas in Argentina. Both species are morphologically similar, and their immature stages are hard to discriminate.
P Rebagliati, AG Papeschi, LM Mola, S Pietrokovsky, P Gajate, V Bottazzi, C Wisnivesky-Colli   +6 more
doaj   +1 more source

Neocentrics and Holokinetics (Holocentrics): Chromosomes out of the Centromeric Rules

, 2010
The centromere appears as a single constriction at mitotic metaphase in most eukaryotic chromosomes. Holokinetic chromosomes are the exception to this rule because they do not show any centromeric constrictions.
G. Cabral, M. Guerra, M. Cuacos, J. Vega, M. González-Sánchez, M.J. Puertas, M. González-García   +6 more
core   +1 more source

Cytogenetic markers applied to cytotaxonomy in two soybean pests: Anticarsia gemmatalis (Hübner, 1818) and Chrysodeixis includens (Walker, 1858).

PLoS ONE, 2020
Anticarsia gemmatalis (Hübner, 1818) and Chrysodeixis includens (Walker, 1858) are species of Lepidoptera that cause great damages in the soybean plantations of Brazil.
Brenda Rafaella Da Silva Magalhães, Daniel Ricardo Sosa-Goméz, Jaqueline Fernanda Dionísio, Felipe Cordeiro Dias, Joana Neres Da Cruz Baldissera, Matheus Pires Rincão, Renata Da Rosa   +6 more
doaj   +1 more source

Cytogenetic analysis on geographically distant parthenogenetic populations of Tityus trivittatus Kraepelin, 1898 (Scorpiones, Buthidae): karyotype, constitutive heterochromatin and rDNA localization

Comparative Cytogenetics, 2014
Tityus trivittatus Kraepelin, 1898 is the most medically important scorpion species of Argentina, and parthenogenetic populations are present in the major cities of this country.
Renzo Sebastián Adilardi, Andres Ojanguren Affilastro, Dardo Marti, Liliana Mola   +3 more
doaj   +1 more source

A targeted gene phylogenetic framework to investigate diversification in the highly diverse yet geographically restricted red devil spiders (Araneae, Dysderidae)

Cladistics, Volume 40, Issue 6, Page 577-597, December 2024.
ABSTRACT The family Dysderidae is a highly diverse group of nocturnal ground‐dwelling and active‐hunter spiders. Dysderids are mostly restricted to the Western Palearctic, and particularly rich and abundant around the Mediterranean region. Interestingly, the distribution of species richness among its 24 genera and three subfamilies is highly biased—80%
Silvia Adrián‐Serrano, Martina Pavlek, Miquel A. Arnedo   +2 more
wiley   +1 more source

Molecular composition and ultrastructure of holokinetic chromosomes [PDF]

, 2018
Holokinetic chromosomes are a specific type of chromosomes which differentiate from standard (monocentric) chromosomes especially by a diffuse form of domain which binds microtubules (holocentromere).
Šejgunovová, Nikola
core