Results 291 to 300 of about 21,682 (308)
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Selectivity of Pesticides to Egg Parasitoid in Sugarcane
Sugar Tech, 2018The 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 +5 more
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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 +3 more
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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 +3 more
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Diapause in the egg parasitoid Trichogramma cordubensis: role of temperature
Journal of Insect Physiology, 2002The role of temperature in the induction of diapause in Trichogramma cordubensis (Hymenoptera: Trichogrammatidae), under controlled laboratory conditions, was investigated using Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) eggs as hosts. Results indicate that prestorage temperatures and the duration of exposure of the parasitoids to these ...
Ventura Garcia, P. +3 more
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Egg Parasitoids: Chalcidoidea with Particular Emphasis on Trichogrammatidae
2021This chapter is focused on chalcid egg parasitoids. All trichogrammatids and mymarids, many encyrtids, and some eupelmids, eulophids and torymids have members that parasitize eggs of other insects. The chapter was mainly engaged with Trichogrammatidae; the most important group of egg parasitoids, not only among the chalcids, but also in throughout the ...
Shahzad Iranipour, Nahid Vaez
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Egg Parasitoids of Fruit Crop Pests
2013Among 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, P. R. Gupta, A. Krishnamoorthy
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Reproduction and Immature Development of Egg Parasitoids [PDF]
, 2009 In this chapter I review the recent advances on egg parasitoids reproduction and immature development. Sperm production in adult male parasitoids varies depending on the status of their testes at emergence and these differences in sperm production are described by the spermatogeny index. Polygyny is common in Hymenoptera parasitoids and males that mate
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Quality Control of Mass Reared Egg Parasitoids
2009In 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.
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Parasitoid egg shell changes in a suitable and unsuitable host
Journal of Ultrastructure Research, 1974The egg shell of the braconid, Cardiochiles nigriceps , Viereck consists of two distinct layers: an inner, crystalline, proteinaceous chorion, and microvilluslike projections embedded in an outer fibrous chorion. In a suitable host the fibrous layer and projections are slowly lost during the first 12 hours.
S. Bradleigh Vinson, J.R. Scott
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Nutritional Ecology of Insect Egg Parasitoids
2009All animals require food and the food is the major issue that determines the biology of an organism. But there are a number of issues associated with the food that are involved. These include the location, confirmation, consumption, utilization and allocation of the resource (food) to the various aspects of the organism’s life style that determines the
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Egg Parasitoids Commercialization in the New World
2009This chapter deals with the commercialization of egg parasitoid species that attack crop pests in the New World. It is discussed the current status of the worldwide commercialization of natural enemies in the U.S.A. and Europe, and with more details in the New World, including Brazil, Colombia, Mexico, Cuba, Ecuador, Venezuela and Peru. The reasons for
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