Discovery of isolated patches ofIcerya purchasi byRodolia cardinalis: A field study

Prasad, Yugal K.

doi:10.1007/bf02375266

Cited by 9 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has also been found preying on I. purchasi on islands where it was not originally released (i.e., Baltra, North Seymour, and Champion Island). Furthermore, our studies on Santa Cruz Island demonstrated that it dispersed quickly after its release and exhibited a high searching capacity, similar to that observed in its native range (Australia), where it was able to detect and destroy cottony cushion scales located 500 m from other I. purchasi colonies within a week (Prasad 1990).…”

Section: Discussionsupporting

confidence: 52%

Monitoring the effects of Rodolia cardinalis on Icerya purchasi populations on the Galapagos Islands

et al. 2011

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 52%

Monitoring the effects of Rodolia cardinalis on Icerya purchasi populations on the Galapagos Islands

et al. 2011

View full text Add to dashboard Cite

“…For example, the neotropical ladybirds Diomus hennesseyi and Hyperaspis notata were both established in a programme against the cassava mealybug, Phenococcus manihoti , in central and eastern Africa (Neuenschwander 2003 ), but neither became signifi cant mortality factors. The high degree of specifi city of R. cardinalis for Icerya species, in combination with a very short generation time, highly effi cient detection of isolated host patches, and the ability of a larva to complete development on a single mature female scale are all thought to be key factors in the effectiveness of the vedalia beetle (Prasad 1990 ). Unfortunately, this ecological confi guration is exceptional considering what is now known of the prey relationships of predatory Coccinellidae, and even atypical of other ladybird -coccid interactions.…”

Section: Intraguild Predationmentioning

confidence: 99%

Coccinellids in Biological Control

Michaud

2012

Ecology and Behaviour of the Ladybird Beetles (Coccinellidae)

View full text Add to dashboard Cite

“…The natural enemies of a pest are, to a greatextent, responsible for the variation in pest abundance. The role of predatory insects in controlling the main insect pests attacking grapevine orchards have been studies by several investigators (Prasad, 1990;Grafton et al, 2005;Ibrahim, 2005;and Mohamed, 2013). Therefore ,the aim of this work was to investigate the population density of the main insect pests infesting grapevine and their predatory insects and evaluate the effect of some weather factors on the population density of certain injurious insects attacking grapevine and their predatory insects.…”

Section: Introductionmentioning

confidence: 99%

Studies on the Population Densities of Certain Insect Pests Attacking Grapevine Trees and Their Associated Predators at Mansoura District

Ghanim¹,

Abou-Elnaga²,

El-Serafi³

et al. 2015

Journal of Plant Protection and Pathology

View full text Add to dashboard Cite

The present investigation was carried out in the farm of Agriculture Research Center , Faculty of Agriculture, Mansoura University to study the effect of some weather factors on the population density of per certain insect pests infesting grapevine trees and their associated predators during the successive seasons of 2014 and 2015 at Mansoura district. The obtained results revealed that four peaks for Retithrips syriacus Manget season were recorded during the period of study. The highest number for this insect was recorded in the second week of August in the two seasons of study. There were four peaks per season for Empoasca lybica deBerg during the period of investigation. The highest number of E. lybica was recorded in the first and third week of June during the two seasons of study. The obtained results showed that four peaks for Empoasca discipiens Paoli were recorded during the period of study. the highest number for this insect was recorded in the third week of July and in the third week of August during the first and second season of study. Data recorded three peaks for Lobisia botrana Schift during the two seasons of study, and the highest number was recorded in the third week of June in the first season and in the first week of July in the second season of study. There were three peaks for Chryptoblabs. Gnidiella Miller in the two seasons of study the highest number was recorded in the third week of Jun in the two season of study , The obtained result assured that three peaks for Cydonia vicina nilotica Muls in the two seasons of study. The highest number for this insect was recorded in the second week of May in the first season 2014 and in the first week of August in the second season of study. The obtained results revealed that there were four peaks for Coccinella undecimpunctata in the two seasons of study,and the highest number for this insect was recorded in the second week of May in the first season and in the third week of August in the second season of study. There were three peaks for Cydonia vicina isis in the two seasons of study. The highest number for this insect was recorded in the third week of Jun in the first season and in the first week of August in the second season of study. The obtained result assured that the temperature (maximum, minimum and average) positively affected on the population density of the most main insect species except C. gnidiella during the two seasons of study. The relative humidity affected negatively on the population density of these insects .the statistical correlation coefficient between the population density of predatory insects and the temperature and relative humidity showed a highly or slightly significant positive or negatively effect on population density of these insects during the two seasons of study.

show abstract

Discovery of isolated patches ofIcerya purchasi byRodolia cardinalis: A field study

Cited by 9 publications

References 11 publications

Monitoring the effects of Rodolia cardinalis on Icerya purchasi populations on the Galapagos Islands

Monitoring the effects of Rodolia cardinalis on Icerya purchasi populations on the Galapagos Islands

Coccinellids in Biological Control

Studies on the Population Densities of Certain Insect Pests Attacking Grapevine Trees and Their Associated Predators at Mansoura District

Contact Info

Product

Resources

About