Eggs of Empoasca kraemeri hatched in and days and nymphal development took and days under screenhouse and laboratory. Ovipositional Resistance to Empoasca kraemeri (Homoptera: Cicadellidae) Phaseouts vulgaris L., to the leafhopper Empoasca kraemeri Ross and Moore. Empoasca species leafhoppers are a major insect pest of common bean, Phaseolus vulgaris that cause significant economic losses in both tropical (E. kraemeri).

Author: Nigami Arakora
Country: Jamaica
Language: English (Spanish)
Genre: Medical
Published (Last): 20 July 2006
Pages: 182
PDF File Size: 10.34 Mb
ePub File Size: 8.64 Mb
ISBN: 286-3-72342-145-9
Downloads: 27671
Price: Free* [*Free Regsitration Required]
Uploader: Feshicage

The development of practical detection indices would greatly improve our ability to screen and develop tea varieties that are resistant to E. Predominant color of dorsum pale green or yellow with few symmetrical cream-colored markings on head and thorax. Empoasca kraemeri is a key pest of dry beans Phaseolus vulgaris L.

Although some weed treatments changed pest abundances, responses differed among arthropod pests, with the strongest effects observed for Caldwelliola and Empoasca leafhoppers. Crosses between tolerant and antixenosis bean lines are recommended as a potential means of increasing overall leafhopper resistance levels. Google Google Images Yahoo! Climate change can benefit individual species, but when pest species are enhanced by warmer temperatures agricultural productivity may be placed at greater risk.

In this research, we formulated three blends with similar attractiveness to leafhoppers as peach, grapevine, and tea plant volatiles; these blends were composed of Z hexenyl acetate, E -ocimene, E -4,8-dimethyl-1,3,7-nonatriene, benzaldehyde, and ethyl benzoate.

Aedeagus basal processes absent. Subgenital plate mesal margin straight or slightly convex. Cicadellidae to light conditions. The understanding of these behavioral mechanisms, especially the importance of opsin genes is expected to be useful for pest management. Cicadellidae and adults of predatory species in the families Coccinellidae, Anthocoridae, Nabidae, Chrysopidae, and Hemerobiidae were sampled in Iowa alfalfa fields from June to September in and We analyzed the effects of temperature anomaly on arrival date and infestation severity of potato leafhopper, Empoasca fabae Harris, a classic new world long distance migrant, and a significant pest in several agricultural crops.

Related Articles  ESCOREZ 2203 PDF

The economic species of Empoasca in the coastal and Sierra regions of Peru Homoptera: Nested PCR analysis and sequencing showed that Asymmetrasca decedens, Empoasca decipiens, Fieberiella macchiae, Euscelidius mundus, Thamnottetix seclusis, Balclutha sp.

Differences among treatments were not observed on egg-laying frequency: Forewing vein MCu distinctly curved. This sex ratio change did not occur after oviposition, nor is it due differential mortality of female and male nymphs.

Factors influencing the abundance of pests in production fields and rates of interception of Dracaena marginata imported from Costa Rica. Your comment will be reviewed and published at the journal’s discretion.

The objective of this empoasac was to use Indel and single nucleotide polymorphism SNP marker Due to the pressure of increasing insecticide resistance and more stringent food safety regulations, development of sound IPM strategies for E.

Understanding pest insect responses to krasmeri light conditions may help with developing alternative strategies for pest control. The specific component relative to tea plant volatiles in formula-P was benzaldehyde, and that in formula-G was ethyl benzoate. The results should help growers to focus pest management efforts on those plantings at greatest risk from particular pests, and to choose cultivars requiring fewer insecticide inputs to produce a quality tree.

Receive exclusive offers and updates empoasfa Oxford Academic. Style apex in ventral view curved laterad. If krsemeri originally registered with a username please use that to sign in.

Subgenital plate length in ventral view distinctly longer than 2X maximum width. On—farm experiments were conducted in villages of semi—arid tropical SAT India to identify the appropriate combination of castor Ricinus communis L.

Comparison of AC electronic monitoring and field data for estimating tolerance to Empoasca kraemeri Homoptera: Plant-mediated interspecific horizontal transmission of an intracellular symbiont in insects. Although leaf nitrogen N has been shown to increase the suitability of hosts to herbivorous arthropods, the responses of these pests to N fertilization on susceptible krraemeri resistant host plants are not well characterized.


File:Empoasca kraemeri.jpg

Don’t have an account? At the lead optimization stage, variations at three regions of compound 1, i. Hind tibia row AV with 5 preapical macrochaetae. In a second study, we estimated monthly abundances of pests in production plots for 1 yr to determine their kraekeri to rates of interception emooasca U.

Although the detection of phytoplasmas in an insect does not prove a definite vector relationship, the technique is useful in narrowing the search for potential vectors.

File:Empoasca – Wikimedia Commons

Tanboureet south of Lebanon and Bourj El Yahoudieh north of Lebanon were surveyed using yellow sticky traps.

In order to reduce the use of insecticide, the application of Beauveria bassiana may be an alternative control.

Mesonotum without dark median spot. InsectaEmpoasca kraemeribeansleafhoppers. Nymphs kraemer grouped into three age intervals: Weeds and their influence on pest and natural enemy populations were studied on a commercial ornamental farm during in the Atlantic Zone of Costa Rica.

In total, 50 plant species from 21 families were found. Don’t have an account? Aphrodes makarovi, Cicadulina bipunctella, Euscelidius mundus, Fieberiella macchiae, Allygus theryi, Circulifer haematoceps, Neoaliturus transversalis, and Megophthalmus scabripennis. The average longevity observed for females and males was: Potential phytoplasma vectors in members of the subfamilies Aphrodinae, Deltocephalinae, and Megophthalminae were present in very low numbers including: Sex ratio of mirid populations shifts in response to hostplant co-infestation or altered cytokinin signaling.

In particular, five treatments were compared: Here we found that the constitutive transcript level of the tea hydroperoxide lyase HPL gene CsiHPL1, and the amounts of Z hexenyl acetate and of total GLV components are significantly higher in tea varieties that are susceptible to E.