Results 41 to 50 of about 3,433 (228)

A taxonomic description of three new Ufens species (Hymenoptera: Trichogrammatidae) from India

open access: yesJournal of Asia-Pacific Biodiversity
The cosmopolitan genus Ufens primarily parasitizes hemipteran eggs and is common in temperate and semi-arid regions such as Asia, the southwestern U.S., and Australia. This study describes three new species from India: U. garhwalensis, U.
Mohsin Ikram, Mohd Yousuf, Waseem Ahmad
doaj   +1 more source

Biologia e exigências térmicas de cinco linhagens de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) criadas em ovos de Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) Biology and thermal requeriments of five Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) strains, reared on eggs of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

open access: yesCiência Rural, 2006
O objetivo desta pesquisa foi estudar a biologia e as exigências térmicas de cinco linhagens de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) coletadas em áreas comerciais de tomate, no Estado do Espírito Santo, em ovos da traça-do ...
Dirceu Pratissoli   +4 more
doaj   +1 more source

EVALUATE THE APPLIED OF THE EGG PARASITOID Trichogramma evanesces WEST. TO REDUCE THE INFESTATION OF THE LESSER WORM, Spodoptera exigua HB. IN SUGAR BEET FIELDS AT EL-AIAT, REGION, GIZA GOVERNORATE. [PDF]

open access: yesJournal of Plant Protection and Pathology, 2011
 Four releases of egg-parasitoid Trichogrammaevanesces West (Hymenoptera: Trichogrammatidae) to control Spodoptera exigua Hb.were applied. Releases were carried out during March throughout the two seasons (2005/2006 and 2006/2007) in sugar beet fields at
M. Mohisen   +3 more
doaj   +1 more source

A New Experimental Setup to Study the Olfactory Behaviour of Trichogramma Egg Parasitoids

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 8, Page 968-974, August 2026.
We developed an experimental setup to assess odor‐induced egg‐laying behavior in tiny egg‐parasitoid wasps. This Y‐shaped olfactometer, coupled with an AI‐based image‐recognition model, automatically quantifies egg parasitism by Trichogramma wasps. Olfactory‐driven egg‐laying preferences were analyzed using Bayesian inference.
Cécile Bresch, Louise van Oudenhove
wiley   +1 more source

Impact of Host and Food Availability on Life‐History Traits in Six Egg Parasitoid Species of the Genus Trichogramma

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 8, Page 887-895, August 2026.
In this study we measured the impact of access to sugar and hosts on the longevity and fecundity of six Trichogramma species: T. cacoeciae, T. chilonis, T. minutum, T. leptoparameron, T. pintoi and T. sibericum. The impact of food differed among species, but there was a general tendency of increased life expectancy and potential fecundity with sugar ...
Véronique Martel   +2 more
wiley   +1 more source

Between extreme simplification and ideal optimization: antennal sensilla morphology of miniaturized Megaphragma wasps (Hymenoptera: Trichogrammatidae) [PDF]

open access: yesPeerJ, 2018
One of the major trends in the evolution of parasitoid wasps is miniaturization, which has produced the smallest known insects. Megaphragma spp. (Hymenoptera: Trichogrammatidae) are smaller than some unicellular organisms, with an adult body length of ...
Anna V. Diakova   +2 more
doaj   +2 more sources

Comparative Toxicity of Bordeaux Mixture by Ingestion and Cuticular Contact Under Climate Change Conditions on Trichogramma cordubensis

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 8, Page 957-967, August 2026.
In the face of environmental contamination to copper, mainly resulting from frequent copper‐based fungicide applications, it is crucial to understand the side effects of these pesticides on non‐target organisms to improve pest management. Trichogramma cordubensis, used as a biological control agent against grape berry moths in vineyards, shows strongly
William Nusillard   +5 more
wiley   +1 more source

Extensive gene rearrangements in the mitochondrial genomes of two egg parasitoids, Trichogramma japonicum and Trichogramma ostriniae (Hymenoptera: Chalcidoidea: Trichogrammatidae)

open access: yesScientific Reports, 2018
Animal mitochondrial genomes usually exhibit conserved gene arrangement across major lineages, while those in the Hymenoptera are known to possess frequent rearrangements, as are those of several other orders of insects.
Long Chen   +6 more
doaj   +1 more source

Description of a new species of Oligosita Walker (Hymenoptera: Trichogrammatidae) from Punjab, India

open access: yesJournal of Threatened Taxa, 2016
One new species, Oligosita ferozepurensis is described based on specimens collected from Ferozepur, Punjab, India.  
Mohsin Ikram, Mohd. Yousuf
doaj   +1 more source

Non‐Target Effects of Some Common Agrochemicals on Various Life Stages and Parasitism Behaviour of Trichogrammatoidea cryptophlebiae Nagaraja, 1979 (Hymenoptera: Trichogrammatidae)

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 8, Page 942-956, August 2026.
This study assessed the non‐target effects of commonly used agrochemicals on the egg parasitoid Trichogrammatoidea cryptophlebiae, an important biological control agent in South African orchards. Agrochemical impacts varied across life stages, with several insecticides allowing adult survival but significantly reducing parasitism and developmental ...
Emma Jane Thompson   +4 more
wiley   +1 more source

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