The parasitoid copidosoma koehleri provides limited. Field experiments were conducted between april and july 2012. Parasitism of copidosoma koehleri on the potato moths complex. Heat shock and infection do not impact soldier number. Apr 11, 2006 agricultural intensification has resulted in a simplification of agricultural landscapes by the expansion of agricultural land, enlargement of field size and removal of noncrop habitat. The arrangement of the genus of this species has been changed three times.
The encyrtid parasitoid copidosoma koehleri blanchard effectively controls the pest in the field in some countries. The distribution in this summary table is based on all the information available. Polyembryonic development in copidosoma koehleri blanchard is traced from the ovarian egg to the adult stage. Insectpest management in organic agriculture options and. Host choice decisions in the polyembryonic wasp copidosoma. Cultural manipulations to enhance biological control. Smallscale field experiments pictured coupled with laboratory bioassays are an important preliminary phase before open field studies in commercial crops. Read development of the polyembryonic parasitoid copidosoma floridanum in trichoplusia ni, entomologia experimentalis et applicata on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Male soldier caste larvae are nonaggressive in the. Sex allocation in a polyembryonic parasitoid with female. In these parasitoids, each egg proliferates into a clonal lineage of genetically identical larvae. The encyrtid polyembryonic parasitoid copidosoma koehleri blanchard has been successfully. Copidosoma koehleri in its host phthorimaea opercullela.
Introduction habitat choice may have high importance for the survival, foraging and reproductive success of an individual. Jurgen kroschel, head entomologyipm international potato center cip. Evaluation of the parasitoid copidosoma koehleri for biological control of the potato tuber moth, phthorimaea operculella, in israeli potato fields. Isolation and identification of sex pheromone of symmetrischema tangolias gyen lepidoptera. The effects of virgin female rearing density on their longevity and the characteristics of their male offspring are explored in the polyembryonic parasitoid wasp copidosoma koehleri blanchard encyrtidae. Encyrtidae m i c h a l s e g o l i 1, t a m a r k e a s a r 2, a m o s b o u s k i l a 1 and a l l y r. In the polyembryonic wasp copidosoma koehleri, a clone of genetically identical offspring develops from each egg. Citeseerx costs and consequences of superparasitism in. Management of the potato tuber moth an invasive pest. The incidence of parasitism in samples of army cutworms collected on five dates from a single location, during the spring of 1991, increased from about 20% in the early samples to. Encyrtidae, and the use of flowering plants as a habitat management tool to enhance biological control of potato moth, phthorimaea operculella lepidoptera. Kuntze is an important commercial crop consumed worldwide, primarily as a beverage made from processed leaves. High rearing density may adversely affect maternal.
Pdf host choice decisions in the polyembryonic wasp. Pdf costs and consequences of superparasitism in the. The mating status of mothers and offspring sex affect clutch size in a polyembryonic parasitoid wasp. Open full article european journal of entomology mafiadoc. In the polyembryonic encyrtid copidosoma koehleri, one larva per clone can differentiate into a sterile soldier. Polyembryony apparently results from the change in cytoplasmicnuclear balance when the formation of the polar region removes about half the cytoplasm of the egg. To assess whether increased soldier formation in c. All structured data from the file and property namespaces is available under the creative commons cc0 license.
It has the largest recorded brood of any parasitoidal insect, at 3,055 individuals. The parasitoid copidosoma koehleri provides limited control. Pest distribution and risk atlas for africa 211 peru argentina australia figure 2 ei of copidosoma koehleri in countries and regions where establishment has been reported according to model predictions of the year 2000. The potato tuber moth phthorimaea operculella zeller is a major pest of potatoes in the field, and of tubers stored under ambient temperatures postharvest. Costs and consequences of superparasitism in the polyembryonic parasitoid copidosoma koehleri.
Copidosoma floridanum is a species of wasp in the family encyrtidae which is primarily a parasitoid of moths in the subfamily plusiinae. This specimen is deposited in the natural history museum, london, uk. When several references are cited, they may give conflicting information on the status. The copidosoma female attacks the egg of the potato tuber moth, and the parasite develops polyembryonically throughout the larval life of its host. Activity of schinus areira anacardiaceae essential oils. Encyrtidae is a diverse group of polyembryonic parasitoids of lepidoptera, including species. Files are available under licenses specified on their description page.
Distinguishing between the two interpretations is often difficult. Clarke 1962 changed the genus to gnorimoschema busck. Review the evolution of polyembryony in parasitoid wasps. Current status of research on plant insect pests and. Jun 01, 2006 read costs and consequences of superparasitism in the polyembryonic parasitoid copidosoma koehleri hymenoptera.
If more than one egg is laid in a host superparasitism, individuals of different clones may compete for food resources. The objective of this study was to investigate the interactions between host and parasitoid by examining the effects of biotic factors such as gregariousness, host origin and stages, and female parasitoid age on the parasitism rate, developmental time, the number of. The influence of food oncopidosoma koehlerihymenoptera. View enhanced pdf access article on wiley online library html view download pdf for offline viewing.
Limitations and prospects article pdf available in annals of the entomological society of america may 2019 with 1,207 reads. Apr 22, 2009 copidosoma koehleri is a polyembryonic parasitoid wasp that parasitizes the potato tuber moth ptm phthorimaea operculella zeller and is used as a biological control agent of this pest horne 1990. Further details may be available for individual references in the distribution table details section which can be. These features complicate the prediction of copidosoma s sex. The effect of floral resources on parasitoid and host. Cambridge core ecology and conservation biological control by george e. Phthorimaea operculella zeller by copidosoma koehleri blanchard baggen and gurr, 1998.
To learn about our use of cookies and how you can manage your cookie settings, please see our cookie policy. Longevity was significantly increased when adults were caged on flowering plants of dill, borage, or coriander. Brood size in a polyembryonic parasitoid wasp is affected by. Preliminary phylogeny of the genus copidosoma hymenoptera, encyrtidae, polyembryonic parasitoids of lepidoptera. Copidosoma koehleri blanchard has been widely used for. By closing this message, you are consenting to our use of cookies. Abstract the potato tuber moth phthorimaea operculella zeller lepidoptera. Pdf evaluation of the parasitoid copidosoma koehleri for. Management of the potato tuber moth an invasive pest of global proportions dr.
Hawaii to control the tomato looper chrysodeixis chalcites while copidosoma koehleri. Frank thuijsman, maastricht university external advisor. The biodiversity heritage library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity community. Gelechiidae is a major agricultural pest of solaneceous crops in warm countries worldwide. Most broods of this wasp are unisexual, but some contain both sexes and the secondary sex ratio of these is usually highly female biased. Pdf the potato tuber moth phthorimaea operculella zeller lepidoptera. The overall population secondary sex ratio is female biased. Field study of parasitism caused by endemic parasitoids and. Essential oils extracted from leaves and fruits of schinus areira anacardiaceae were tested for their repellent, toxic and feeding deterrent properties against tribolium castaneum coleoptera. Control biologico free download as powerpoint presentation. Transgenerational effects of maternal rearing density on. During recent years the species has been inadvertently introduced into georgia markosyan, 1992 and the ukraine and there is a threat of its spreading to neighbouring states sikura and shendaraskaya, 1983. However, investment in soldiers by males and females is predicted to differ depending upon how offspring are allocated to hosts and the mating system.
Some female larvae develop into soldiers that kill withinhost competitors, while males do not form soldiers. The best studied polyembryonic wasp is copidosoma floridanum ashmead, which. Second international symposium on biological control of arthropods. Download fulltext pdf habitat management for pest management. Here, we compared male and female soldiers in the polyembryonic wasp copidosoma. Evaluation of the parasitoid copidosoma koehleri for biological. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. We studied the development of the polyembryonic wasp. Habitat management as a safe and effective approach for. The ovarian eggs of copidosoma koehleri are dumbbellshaped, consisting of the bulb, neck, and enlarged basal portion measuring approximately 0. Encyrtidae, ecological entomology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Developmental patterns in the polyembryonic parasitoid wasp. Theory implicates both competition and sex ratio manipulation in the evolution of a sterile soldier caste. This page was last edited on 18 december 2019, at 22.
Development of the polyembryonic parasitoid copidosoma. Tamar keasar, university of haifa june 22, 2010 abstract copidosoma parasitoid wasps play an important role in controlling agricultural pests. Copidosoma koehleri is an egglarval proovigenic parasitoid of the potato tuber moth phthorimaea operculella zeller lepidoptera. Copidosoma koehleri phthorimaea opercullela abstract polyembryony is a unique mode of development inwhich multiple genetically identical embryos develop from a single egg. Encyrtidae and its host, the potato pest, phthorimaea operculella zeller.
Oomyzus sokolowskii kurdjumov is a gregarious larvalpupal parasitoid of the diamondback moth plutella xylostella l. The encyrtid polyembryonic parasitoid copidosoma koehleri blanchard has been successfully introduced for biological control of the moth in potato fields in south africa and australia. Developmental patterns in the polyembryonic parasitoid wasp copidosoma koehleri. Costs and consequences of superparasitism in the polyembryonic parasitoid copidosoma koehleri hymenoptera. High effectiveness of tailored flower strips in reducing. Tuta absoluta was originally described as phthorimaea absoluta meyrick 1917 from a single male which was collected in huancayo, peru. During an outbreak of army cutworm in southern alberta in the spring of 1990, the overall incidence of parasitism by the polyembryonic parasitoid, copidosoma bakeri howard, was 61% in samples from seven fields.
Factors influencing brood sex ratios in polyembryonic. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The parasitoid copidosoma koehleri provides limited control of the potato tuber moth, phthorimaea operculella, in stored potatoes tamar keasar a, adi sadeh b a department of life sciences, achva college, mobile post shikmim 79800, israel b department of evolution, systematics and ecology, the hebrew university, jerusalem 91904, israel received 22 december 2006. In some polyembryonic species a proportion of the embryos develop into soldier larvae, which attack competitors in the host. Copidosoma is a genus of chalcid wasps, which are parasitoids of lepidoptera.
The life cycle begins when a female oviposits into the eggs of a suitable host species, laying one or two eggs per host. An copidosoma koehleri in uska species han hymenoptera nga ginhulagway ni blanchard hadton 1940. Furthermore, the extent of polyembryonic division is increased when the amount of nuclear material is increased by the. Polyembryonic wasps provide dramatic examples of intraspecific developmental conflict. In rare instances, a publisher has elected to have a zero moving wall, so their current issues are available. Using selective food plants to maximize biological control of. The encyrtid polyembryonic parasitoid copidosoma koehleri blanchard. The wasps are polyembryonic, depositing one or two eggs into their host which then develop into multiple offspring and have a soldier caste and a reproductive caste. Jan 23, 2019 download pdf introduction tea camellia sinensis l. Dec 14, 2015 insectpest management in organic agriculture options and challenges 1. The moving wall represents the time period between the last issue available in jstor and the most recently published issue of a journal.
Encyrtidae tamar keasar 1 michal, segoli 2 roi, barak 3 shimon steinberg 3 david, giron 4 michael, r strand. A model of the oviposition behavior of copidosoma koehleri. Thirty winter wheat fields hereafter focal fields were selected along a gradient of landscape complexity in the central swiss plateau cantons zurich and aargau. Sustainable pest regulation in agricultural landscapes. Polyembryony in copidosoma koehleri blanchard chicago journals. The potato tuber moth phthorimaea operculella zeller lepidoptera. Pdf the mating status of mothers and offspring sex affect. Hymenoptera, encyrtidae, polyembryonic parasitoids of lepidoptera pdf. Male clones contain fewer individuals than female clones. An copidosoma koehleri in nahilalakip ha genus nga copidosoma, ngan familia nga encyrtidae. Oct 24, 2015 this page was last edited on 18 december 2019, at 22. Copidosoma koehleri, host choice, host quality, polyembryonic parasitoid wasps, soldier larva, superparasitism. In parasitoids, the host body serves as a habitat for the developing offspring godfray, 1994.
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