scholarly journals Description and biology of two new egg parasitoid species, Trichogramma chagres and T. soberania (Hymenoptera: Trichogrammatidae) reared from eggs of Heliconiini butterflies (Lepidoptera: Nymphalidae: Heliconiinae) collected in Panama

2018 ◽  
Author(s):  
Jozef B. Woelke ◽  
Fursov N. Viktor ◽  
Alex V. Gumovsky ◽  
Marjolein de Rijk ◽  
Catalina Estrada ◽  
...  
Keyword(s):  
Central America ◽  
Parasitoid Wasp ◽  
Egg Parasitoid ◽  
Wasp Species ◽  
Agraulis Vanillae ◽  
In The Wild ◽  
Lowland Rainforest ◽  
Morphological And Molecular Characterization ◽  
Tropical Lowland Rainforest

Two new minute egg parasitoid wasp species belonging to the genus Trichogramma (Hymenoptera: Trichogrammatidae), T. chagres sp. nov. and T. soberania sp. nov., were found in a tropical lowland rainforest in Panama, Central America. In this paper, we describe, illustrate and discuss the biology, morphological and molecular characterization of the two new Trichogramma wasp species. Both species were collected from eggs of passion vine butterflies, Agraulis vanillae vanillae (Lepidoptera: Nymphalidae: Heliconiinae) and unidentified Heliconiini species, laid on different Passiflora species (Malpighiales: Passifloraceae). A female T. soberania sp. nov. wasp was noted on the wings of a female Heliconius hecale melicerta butterfly caught in the wild. This suggests that this species may occasionally hitch a ride on adult female butterflies to find suitable host eggs. Our study adds two more species identifications to the scarce record of Trichogramma wasps from the widespread Heliconiini butterflies in Central America.

scholarly journals Behavioural and transcriptional changes in post-mating females of an egg parasitoid wasp species

2019 ◽  
Vol 6 (1) ◽  
pp. 181453 ◽  
Author(s):  
Peng-Cheng Liu ◽  
De-Jun Hao
Keyword(s):  
Parasitoid Wasp ◽  
Acid Synthesis ◽  
Egg Parasitoid ◽  
Transcriptional Analysis ◽  
Physiological Changes ◽  
Wasp Species ◽  
Egg Maturation ◽  
Transcriptional Changes ◽  
Upregulated Genes ◽  
Substance Transport

In many animals, mating is essential for the production of offspring by females; however, mating seems to not be necessary in Hymenoptera insects. Virgin females can produce offspring, although the sex of the offspring is all male. Usually, behavioural and physiological changes are induced by mating in female insects, including parasitoid wasps. However, very little is known about the resulting changes in gene expression that contribute to the post-mating response in females; thus, we studied this aspect in the egg parasitoid wasp species Anastatus disparis (Hymenoptera: Eupelmidae) by transcriptional analysis. A total of 55 differentially expressed genes were identified in post-mating females, and most of the genes (90.9%) were downregulated. Upregulated genes encoded products that were mainly involved in fatty acid synthesis and pyrimidine metabolism, while the downregulated genes were mainly involved in substance transport and metabolism. In addition, post-mating A. disparis females exhibited a tendency to accelerate egg maturation and became unreceptive to further mating. Based on the transcriptional data, we discuss how specific genes mediate these behavioural and physiological changes. Overall, our study provided new and comprehensive insights into post-mating changes in females and provided a basis for future mechanistic studies.

scholarly journals Sight of parasitoid wasps accelerates sexual behavior and upregulates a micropeptide gene in Drosophila

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shimaa A. M. Ebrahim ◽  
Gaëlle J. S. Talross ◽  
John R. Carlson
Keyword(s):  
Gene Expression ◽  
Nervous System ◽  
Sexual Behavior ◽  
Behavioral Response ◽  
Mutational Analysis ◽  
Parasitoid Wasp ◽  
Parasitoid Wasps ◽  
Wasp Species ◽  
Defensive Responses ◽  
Vast Range

AbstractParasitoid wasps inflict widespread death upon the insect world. Hundreds of thousands of parasitoid wasp species kill a vast range of insect species. Insects have evolved defensive responses to the threat of wasps, some cellular and some behavioral. Here we find an unexpected response of adult Drosophila to the presence of certain parasitoid wasps: accelerated mating behavior. Flies exposed to certain wasp species begin mating more quickly. The effect is mediated via changes in the behavior of the female fly and depends on visual perception. The sight of wasps induces the dramatic upregulation in the fly nervous system of a gene that encodes a 41-amino acid micropeptide. Mutational analysis reveals that the gene is essential to the behavioral response of the fly. Our work provides a foundation for further exploration of how the activation of visual circuits by the sight of a wasp alters both sexual behavior and gene expression.

Morphological and molecular characterization of new melon germplasm resistant toPodosphaera xanthii

2017 ◽  
pp. 69-74
Author(s):  
E.W.L.P. Nunes ◽  
A.O. Ricarte ◽  
E.M. Martínez ◽  
C. Esteras ◽  
G.H.S. Nunes ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Morphological And Molecular Characterization
Sign in / Sign up

Export Citation Format

Share Document