2 edition of Population dynamics, parasitization, control, and prognosis of the pea aphid found in the catalog.
Population dynamics, parasitization, control, and prognosis of the pea aphid
1974 by Academia Nakladatelstvi Ceskoslovenske Akademie Ved in Praha .
Written in English
Bibliography: p. 120-122.
|Series||Rozpravy Československé akademie věd. Řada matematických a přírodních věd, ročník 84, sešit 3|
|LC Classifications||Q44 .C4 Roč. 84, seš. 3, SB945.P35 .C4 Roč. 84, seš. 3|
|The Physical Object|
|Pagination||123 p., 8 plates.|
|Number of Pages||123|
|LC Control Number||74182207|
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Despite the prevalence of unsuccessful host stinging by A. asychis, the effects, if any, of this behavior on aphid population dynamics have not been studied. Previously, we found that unsuccessful host stinging was common when A.
asychis attacked the pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae).Cited by: 1. The pea aphid Acyrthosiphon pisum is a common pest of many species of legumes and its parasitoid Aphidius ervi is regarded as a successful biocontrol agent.
In this study, we report a greater survival rate of parasitized aphids compared with unparasitized ones, after exposure to a very high temperature (39 °C for 30 min).Cited by: 3.
Laboratory and field studies were made in in south-western Slovakia on the population dynamics of Acyrthosiphon pisum (Harris). Both green and pink forms of the aphid were present. pisum overwintered in the egg stage on lucerne or clover, the eggs being laid on the leaves and stalks.
Only fertilized eggs overwintered, from which nymphs hatched in March and subsequently gave rise to Author: J. Král'ovic. When aphid numbers were high, 50–80% Population dynamics C. 7‐punctata had eaten pea aphids. Few of the carahuds ate pea aphids in the field.
There was no correlation between numbers of predators caught and numbers of aphids at peak in any system. Carabids were more common in peas while spiders and staphylinids were more common in clover and alfalfa.
Colder Cited by: The model by Frazer and Gilbert () to simulate field population dynamics of the pea aphid on alfalfa was easily con verted to a simulation model of AMV epidemiology. FRAZER TABLE 1 Relative probabilities of each instar of the pea aphid, Acyrthosiphon pisum (Harris), being eaten by coccinellids (FACTE), leaving a plant (FACTL) and.
Within season population dynamics of three tree-dwelling aphid species. Values based on direct counts of the number of individuals per 80 leaves, during the years – (Glasgow, UK.
A population of the Turkey‐oak aphid (Myzocallis boerneri Stroyan) was sampled at approximately weekly intervals on two Turkey‐oak trees for 19 years On one tree (A), the aphids exhibited a distinct seasonal pattern with a spring increase, summer decrease, early.
Population dynamics, parasitization, control, and prognosis of the pea aphid (Acyrthosiphon pisum Harris) in Czechoslovakia. — Praha, Academia Nakladatelstvi Ceskoslovenske Akademie Ved, Rozpravy Ceskoslovenske Akademie Vèd. Rada Matematickych a Prirodnich Vèd.
Starý P (a) Population dynamics, parasitization, control and prognosis of the pea aphid (Acyrtosiphon pisum Harris) in Czechoslovakia. Trans Czechoslov Acad Sci Ser Math Nat Sci – Google Scholar. Aphids are among the major pests associated with strawberries in Southern Brasil.
In this study, we identified the main species that occur in strawberry fields in the states of Paraná and Rio Grande do Sul, Brasil. We also compared the effectiveness of different sampling methods and studied the population dynamics of aphid species during two strawberry crop cycles in the municipality of.
The effect of temperature on the and prognosis of the pea aphid book fecundity and the survival of apterous and alate virginoparous pea aphid, Acyrthosiphon pisum (Harris), from Kamloops, B.C., was measured. Demographic statistics were estimated for °, °, °, °, and °C constant and for fluctuating field temperatures.
To assess the potential influence of this genetically based difference in resistance to parasitism on pea aphid population dynamics, pea aphids, A.
ervi, and other natural enemies of aphids in. The effect of habitat structure and adverse weather conditions on the foraging behavior and resource utilization of Aphidius ervi (Haliday), a parasitoid of the pea aphid Acyrthosiphon pisum (Harris), was analyzed at two different spatial scales.
Oviposition of A. ervi females was generally low, ranging between one and four eggs laid per aphid colony (colony size 10 aphids). Starý, P. () Population dynamics, parasitization, control and prognosis of the pea aphid (Acyrthosiphon pisum Harris) in Czechoslovakia.
Transactions Czechoslovak Academy of Sciences, Mathematics and Natural Sciences Ser 1– The average level of resistance of a population strongly predicts rates of successful parasitism in the ®eld. The ability of the parasitoid to regulate the aphid may vary among pea aphid populations of different levels of resistance.
Key words. Aphid, biological control, parasitoid, population dynamics. Starý, P., Population dynamics, parasitization, control and prognosis of the pea aphid,Acyrthosiphon pisum (Harris) in Czechoslovakia.
Trans. Czechosl. Acad. Sci. Ser. math. & nat. Sci(3), pp. The pea aphid (Acyrthosiphon pisum) is a herbivorous insect species comprised of genetically distinct groups that are specialized on different host plants (Via a, ).
Here, we examine how the genetic differentiation of pea aphid populations on different host plants affects their interaction with a parasitoid wasp, Aphidius ervi. For example, using an aphid-parasitoid model, we examined the effect that a commonly studied behaviour, variance in host selection by aphid parasitoids, has on aphid-parasitoid population dynamics.
Starý P (a) Population dynamics, parasitization, control and prognosis of the pea aphid (Acyrtosiphon pisum Harris) in Czechoslovakia.
Trans Czechoslov Acad Sci Ser Math Nat Sci Google Scholar. Precipitation has a positive effect on pea aphid (McVean et al., ). However, under elevated CO 2 and O 3 in the future, some of the insects may be unaffected as there was no effect on development time, adult weight, embryo number and the weight of nymphs of the aphid, Cepegillettea betulaefoliae Granovsky, feeding on paper birch (Awmack et.
Most biological control systems involve a diverse community of natural enemies. We investigated how specialist and generalist natural enemies differ as biological control agents of pea aphids (Acyrthosiphon pisum), and how interactions among natural enemies affect successful control.
Pea Aphid Control on Field Pea, The purpose of this study was to evaluate the efficacy of insecticides at pre-bloom, early pod, and late pod timings for the control of pea aphids on field pea. The experiment was conducted at the North Dakota State University North Central Experiment Station south of.
Pigeon pea will grow optimally in a well drained soil with a pH between and Once established, pigeon pea is relatively tolerant to drought conditions and can survive for long periods with little irrigation. Propagation Pigeon pea is propagated directly from seed which should be sown in a prepared seed bed.
Seeds should be planted to a. Moon et al. () released two parasitoid mummies of A. colemani per square meter three times in early season to control A.
gossypii in glasshouses and aphid populations fell 1 to per leaf in. To study the ecological regulation effects of species diversity in wheat fields on Sitobion avenae, field experiments were carried out in Langfang Experimental Station of Institute of Plant Protection, Chinese Academy of Agricultural Sciences from October, to July, The intercropping patterns of wheat and pea, by the proportions of planting row of pea and wheat in, and 2.
Predator avoidance behavior in the pea aphid: costs, frequency, and population consequences. Nelson EH(1). Author information: (1)Center for Population Biology, Department of Entomology, University of California, Davis, CAUSA. [email protected] Induced prey defenses can be costly.
Results show that during larval development E. fumipennis killed the most third-instar aphids ( aphids, 88mg biomass killed) and reached the largest size, followed by A. obliqua ( aphids. Comparison of two methods, based on counts and damage symptoms, to assess population dynamics of the leaf‐curling plum aphid Brachycaudus helichrysi (Hom., Aphididae) on sunflower I.
Badenhausser; J. Lerin; Pages: ; First Published: 26 August The use of two aphid genotypes, each with and without Regiella, allowed us to control for effects of aphid genotype on pathogen susceptibility.
Before fungal infection, we maintained pea aphids asexually on fava bean (Vicia faba) plants in 16 h of light and 8 h of dark at 20°C.
We exposed adults to fungus after their final molt (at 9 days of. The pea aphid A. pisum was used in this study. All the experiments were performed with the Tucson-uninfected subclone provided by Nancy Moran (University of Texas). The Tucson-uninfected sub-colony was established in from the Tucson pea aphid originally collected from Vicia faba in Tucson (Arizona, ) through curing of S.
Population Dynamicxs - General Considerations 60 POPULATION DYNAMICS - GENERAL CONSIDERATIONS Notes I. Insect Populations and Population Dynamics.
Definition of Population: a collective group of individuals of the same species occupying a particular space. Populations may be divided into demes.
A deme is a smaller unit of a. Pea aphids are serious pests of pulses, and biological control by their dominant parasitic wasp natural enemy, Aphidius ervi is considered to be an important management tool for these pests.
In recent work in our laboratories, we have found that inherited symbionts of the pea aphid, Acyrthosiphon pisum may confer resistance to A. ervi. In the proposed research, we plan to further explore this.
Aphids (Hemiptera: Aphididae) are among the most important pests in agriculture. Over species of herbaceous plants and shrubs are colonized by aphids (Blackman and Eastop ) and most crops suffer from feeding damage from one or several aphid addition, aphids are vectors for over plant viruses (Hogenhout et al.
Numerous predators, parasitoids and. guild, can control spirea aphid populations on apple; and (4) describe the dynamics of the aphid predator guild in relation to aphid population dynamics. Materials and methods Five separate experiments were conducted to address one or more of the stated objectives in research orchards at the Appalachian Fruit Research Station in Kear.
Bacterial diversity in each pea aphid sample (alpha diversity) was relatively low with 3–11 unique OTUs per sample (mean = ). Several bacterial OTU were shared across pea aphid samples but some samples were characterized by specific bacterial communities.
Not only were the bacterial communities of pea aphid samples dominated by only a few. (b) Creating artificial secondary symbiont infections. Novel associations between pea aphids and the facultative symbiont H.
defensa were created by injecting naturally symbiont-free aphids (the ‘recipient’ clones; shown to be symbiont-free by the absence of PCR product after attempted amplification using the universal 10F/35R bacterial primer pair and specific primers for Rickettsia and.
A range of economically important parasitoid species respond to aphid sex pheromones, and their potential for enhancing parasitization of aphid populations has been demonstrated in the field.
Commercial production of the pheromone from the plant Nepeta cataria L has been developed and strategies for its use in arable crops are being investigated. Mouhammad Shadi Khudr, Tomos Potter, Jennifer Rowntree, Richard F.
Preziosi, Community Genetic and Competition Effects in a Model Pea Aphid System, Eco-Evolutionary Dynamics, /B, (), (). Study organisms. The pea aphid, Acyrthosiphon pisum, has diversified into numerous genetically distinct host races that specialize (i.e.
have increased preference for, and performance on) on a variety of cultivated herbaceous legumes, including economically important crops such as alfalfa and clover .This aphid was introduced to North America from Europe in the late s , but native.
To test this assumption, we compared the growth patterns of the hymenopteran parasitoid Aphidius ervi when it developed in different nymphal instars of apterous pea aphids, Acyrthosiphon pisum.
At daily intervals, unparasitized aphids and aphids that were parasitized at 48, 72, and h (corresponding to nymphal instars L 1 —L 4. Indeed, access to pea aphid honeydew appeared to increase both the fecundity and adult life span of the wasp significantly.
Alternative prey may also enhance the biological control of pests because they decrease intraguild predation (i.e., predation among predators that shares the same prey species) (Dinter, ). Meyhofer and Hindayana (Aphids are small sap-sucking insects and members of the superfamily names include greenfly and blackfly, although individuals within a species can vary widely in color.
The group includes the fluffy white woolly aphids.A typical life cycle involves flightless females giving living birth to female nymphs—who may also be already pregnant, an adaptation scientists call.Population Level Effects of Cadmium and the Insecticide, Imidacloprid to the Parasitoid, Aphidius ervi after Exposure Through its Host, the Pea Aphid, Acyrthosiphon pisum.