Results 51 to 60 of about 6,209 (198)

The genomes of two key bumblebee species with primitive eusocial organization [PDF]

open access: yes, 2015
Background: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies.
Amdam, Gro V.   +143 more
core   +17 more sources

Sequence Expression of Supernumerary B Chromosomes: Function or Fluff? [PDF]

open access: yes, 2019
B chromosomes are enigmatic heritable elements found in the genomes of numerous plant and animal species. Contrary to their broad distribution, most B chromosomes are non-essential. For this reason, they are regarded as genome parasites.
Akbari, Omar S   +2 more
core   +1 more source

Cytoplasmic incompatibility and bacterial density in Nasonia vitripennis. [PDF]

open access: yesGenetics, 1993
Abstract Cytoplasmically (maternally) inherited bacteria that cause reproductive incompatibility between strains are widespread among insects. In the parasitoid wasp Nasonia, incompatibility results in improper condensation and fragmentation of the paternal chromosomes in fertilized eggs.
J A, Breeuwer, J H, Werren
openaire   +2 more sources

Target enrichment of ultraconserved elements from arthropods provides a genomic perspective on relationships among Hymenoptera

open access: yes, 2014
Gaining a genomic perspective on phylogeny requires the collection of data from many putatively independent loci collected across the genome. Among insects, an increasingly common approach to collecting this class of data involves transcriptome ...
Brady, Seán G.   +3 more
core   +2 more sources

Evolution of the insect Sox genes [PDF]

open access: yes, 2008
Background The Sox gene family of transcriptional regulators have essential roles during development and have been extensively studied in vertebrates. The mouse, human and fugu genomes contain at least 20 Sox genes, which are subdivided into groups based
Megan J Wilson, Peter K Dearden
core   +2 more sources

Loss, persistence and reversal of phenotypic traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni   +4 more
wiley   +1 more source

Nasonia vitripennis (Walker) (Hymenoptera: Pteromalidae) parasitóide de dípteros muscóides coletado em Itumbiara, Goiás Nasonia vitripennis (Walker) (Hymenoptera: Pteromalidae) parasitoid of muscoids dipterous collected in Itumbiara, Goias, Brazil

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2004
This work reports the occurrence of parasitoid Nasonia vitripennis (Walker) (Hymenoptera: Pteromalidae) parasitizing pupae of flies (Diptera) in different substrata in Itumbiara, Goiás. The pupae were obtained by the flotation method.
C.H. Marchiori
doaj   +1 more source

Insect Innate Immunity Database (IIID): an annotation tool for identifying immune genes in insect genomes. [PDF]

open access: yesPLoS ONE, 2012
The innate immune system is an ancient component of host defense. Since innate immunity pathways are well conserved throughout many eukaryotes, immune genes in model animals can be used to putatively identify homologous genes in newly sequenced genomes ...
Robert M Brucker   +4 more
doaj   +1 more source

Calpain Proteases and the Evolving Signaling Network in Insect Embryonic Patterning

open access: yesJournal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
Insect embryonic Dorsal‐Ventral (DV) patterning relies on the BMP and Toll pathways to different extents. Calcium‐dependent cystein proteases of the Calpain family also exert an important function to pattern the DV axis. In Drosophila, Calpain A cleaves the Cactus/IkappaB inhibitor and modifies Toll signals in ventral regions of the embryo. In Rhodnius
Alison Julio, Helena Araujo
wiley   +1 more source

Parasitóides de Chrysomya megacephala (Fabricius) coletados em Itumbiara, Goiás

open access: yesRevista de Saúde Pública, 2004
Foram determinadas as espécies de parasitóides associadas com Chrysomya megacephala, coletados com isca de rins de bovino, em Itumbiara, Estado de Goiás. As pupas foram obtidas pelo método de flutuação, individualizadas em cápsulas de gelatina e mantidas
Marchiori Carlos H
doaj   +3 more sources

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