نتایج جستجو برای: hymenoptera
تعداد نتایج: 15125 فیلتر نتایج به سال:
Hymenoptera show a great variation in reproductive potential and nesting behavior, from thousands of eggs in sawflies to just a dozen in nest-provisioning wasps. Reduction in reproductive potential in evolutionary derived Hymenoptera is often facilitated by advanced behavioral mechanisms and nesting strategies. Here we describe a surprising nesting behavior that was previously unknown in the en...
Animal toxin envenomations have medical as well as ecological significance. Toxin-producing animals are categorized under either venomous group or poisonous group. Venomous animals are capable of producing and delivering the toxin during a biting or stinging act whereas poisonous animals are those whose tissues, either in whole or in part, are toxic. [1] About 75% of the world’s animal species ...
Calymmochilus dispar Bouček & Andriescu (Hymenoptera, Eupelmidae) and Gelis apterus (Pontoppidan) (Hymenoptera, Ichneumonidae) are newly recorded as parasitoids of the ant-eating spider Zodarion styliferum (Simon) (Araneae, Zodariidae). The larvae of both parasitoid species fed on juvenile spiders. The final instar larva and pupa of Calymmochilus dispar and the male of Gelis apterus are describ...
sphecidae is a large and important family of hymenoptera. all members of this family are presocial predators of other arthropods and play a role in the control of pest complex. in this study, sphecids were collected from east azerbaijan province using sweep net, malaise traps and yellow pan traps. twenty species of the family sphecidae (hymenoptera), belonging to subfamilies pemphredoninae, ast...
The bacterial symbiont Cardinium (Bacteroidetes) was previously implicated in the thelytokous reproduction of the parasitoid Plagiomerus diaspidis Crawford (Hymenoptera: Encyrtidae). Horizontal transmission of the symbiont among the cactus scale Diaspis echinocacti Bouché (Homoptera: Diaspididae) and its hymenopteran parasitoids has been suggested. In this study, the bacteria associated with D....
Although eusociality evolved independently within several orders of insects, research into the molecular underpinnings of the transition towards social complexity has been confined primarily to Hymenoptera (for example, ants and bees). Here we sequence the genome and stage-specific transcriptomes of the dampwood termite Zootermopsis nevadensis (Blattodea) and compare them with similar data for ...
Parasitoid wasps of the order Hymenoptera, the most diverse groups of animals, are important natural enemies of arthropod hosts in natural ecosystems and can be used in biological control. To date, only one neuropeptidome of a parasitoid wasp, Nasonia vitripennis, has been identified. This study aimed to identify more neuropeptides of parasitoid wasps, by using a well-established workflow that ...
PURPOSE OF REVIEW To analyse the association of systemic allergic hymenoptera sting reactions with mastocytosis and elevated baseline serum tryptase and to discuss diagnosis and treatment in patients with both diseases. RECENT FINDINGS In recent large studies on patients with mastocytosis a much higher incidence of severe anaphylaxis following hymenoptera stings than in the normal population ...
BACKGROUND Venom immunotherapy (VIT) has proven to be efficacious in reducing the severity of anaphylactic reactions following field stings in patients with Hymenoptera venom allergy. Due to sequence homologies in the allergens used in Hymenoptera vaccines, there is concern that immunotherapy could lead to sensitization to allergens to which patients were not previously sensitized. The relevanc...
Eusocial behavior has arisen in few animal groups, most notably in the aculeate Hymenoptera, a clade comprising ants, bees, and stinging wasps [1-4]. Phylogeny is crucial to understanding the evolution of the salient features of these insects, including eusociality [5]. Yet the phylogenetic relationships among the major lineages of aculeate Hymenoptera remain contentious [6-12]. We address this...
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