Results 191 to 200 of about 4,287 (237)

Size-induced reproductive constraints in an egg parasitoid

Journal of Insect Physiology, 2012
The size of adult parasitoids is influenced by the quantity and quality of resources available during immature development. Gregarious development of endoparasitoids results in scramble competition where the resources are shared among individuals developing into the same host.
Guy, Boivin, Véronique, Martel
openaire   +2 more sources

Parasitoid-induced host egg abortion: An underappreciated component of biological control services provided by egg parasitoids

Biological Control, 2016
Accurate evaluation of the biological control services provided by insect natural enemies requires a consideration of the full diversity of means by which they can cause reductions in host or prey populations. Here, we discuss the fact that host attacks by egg parasitoids often result in failed parasitoid offspring development, while causing the host ...
Paul K. Abram, Jacques Brodeur, Victor Burte, Guy Boivin   +3 more
openaire   +1 more source

Genetics of the Behavioral Ecology of Egg Parasitoids

2009
Biological control with egg parasitoids has been mainly based on a trial-and-error approach and, as a result, its success rate has remained low. Several authors recently proposed that, on the other hand, a behavioral ecology approach of biological control, based on optimization theoretical models, can provide important means for improving the success ...
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Quality Control of Mass Reared Egg Parasitoids

2009
In this chapter we will present methods for determination of the quality of mass reared egg parasitoids. Before we describe quality control guidelines, we will first outline the development of quality control of natural enemies, summarize the basic considerations concerning management of laboratory populations, and discuss obstacles in mass rearing ...
van Lenteren, J.C., Bigler, F.
openaire   +1 more source

Egg Parasitoids in Cotton Ecosystem

2013
The egg parasitoid fauna, especially trichogrammatid species, associated with the spotted bollworms (Earias vittella, E. insulana), pink bollworm (Pectinophora gossypiella) and American bollworm (Helicoverpa armigera), which are the key target pests in cotton ecosystem, are discussed. Inundative releases of two native species (Trichogramma chilonis and
openaire   +1 more source

Sex Ratio Modulators of Egg Parasitoids

2009
The importance of sex ratio s in the biology and biocontrol application of egg parasitoids can be summarized as the cost of producing males. For both the biocontrol practitioner and the biocontrol agent a surplus of healthy fecund females is highly desirable.
James E. Russell, Richard Stouthamer
openaire   +1 more source

Egg Parasitoids of Fruit Crop Pests

2013
Among the temperate fruit crops, there is a good scope for biocontrol of the codling moth with repeated release of Trichogramma embryophagum Htg., while the Indian gypsy moth is subjected to varying levels of natural parasitisation by Anastatus kashmirensis Mathur.
M. Mani, A. Krishnamoorthy, P. R. Gupta
openaire   +1 more source

Selectivity of Pesticides to Egg Parasitoid in Sugarcane

Sugar Tech, 2018
The aim of this study was to evaluate the selectivity of herbicides, insecticides, and fungus Metarhizium anisopliae (Metsch.) on the immature stages of Trichogramma galloi Zucchi. Egg masses of Diatraea flavipennella Box, 1931, containing 30 eggs each, were immersed in test solutions for 5 s, before and after parasitism.
Ellen Carine Neves Valente, Sônia Maria Forti Broglio, Nivia da Silva Dias-Pini, Lígia Broglio Micheletti, André Suêldo Tavares de Lima, Tiago Barbosa   +5 more
openaire   +1 more source

Egg Parasitoids in Legume Crops Ecosystem

2013
In India, legume crops as targets for biocontrol include pigeon pea, chickpea, pea, black gram, groundnut, soybean and lucerne. The egg parasitoids occurring in or used for biocontrol in legume crop ecosystem in India are mainly Scelionids (Telenomus sp.) and Trichogrammatids (Trichogramma, 14 species; Trichogrammatoidea, 7 species), besides the ...
M. A. Khan, Siddharth Tiwari, Meena Agnihotri, Sunita Pandey   +3 more
openaire   +1 more source

Egg parasitoids of Australian Coreidae (Hemiptera)

Australian Journal of Entomology, 2001
AbstractTen microhymenopteran species are recorded as parasitoids of the eggs of coreid bugs in Australia: Chrysochalcissa olivacea Girault (Torymidae) from Amorbus biguttatus Stål and Pternistria bispina Stål; two species of Anastatus Motschulsky (Eupelmidae) from Mictis profana (F.), Amorbus alternatus Dallas, Amblypelta lutescens lutescens (Distant)
Ian D Naumann, Martin J Steinbauer
openaire   +1 more source