scholarly journals Discovery of the Male of Ageniaspis citricola (Hymenoptera: Encyrtidae), Parasitoid of the Citrus Leafminer Phyllocnistis citrella (Lepidoptera: Gracillariidae)

1995 ◽  
Vol 78 (1) ◽  
pp. 134 ◽  
Author(s):  
Gregory A. Evans
Keyword(s):  
Phyllocnistis Citrella ◽  
Citrus Leafminer ◽  
Ageniaspis Citricola

scholarly journals Effect of neem on Phyllocnistis citrella Stainton and its parasitoid Ageniaspis citricola Logvinovskaya in Ecuador

Enfoque UTE ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 01-10
Author(s):  
Ernesto Cañarte-Bermúdez ◽  
Bernardo Navarrete-Cedeño ◽  
Silvia Montero-Cedeño ◽  
Hugo César Arredondo-Bernal ◽  
Onésimo Chávez-López ◽  
...  
Keyword(s):  
Aqueous Extract ◽  
Experimental Unit ◽  
Repellent Effect ◽  
Field Cage ◽  
Control Field ◽  
Transparent Plastic ◽  
Phyllocnistis Citrella ◽  
Citrus Leafminer ◽  
Ageniaspis Citricola ◽  
And Control

Efficacy of neem on Citrus Leafminer (CLM) and effect on its parasitoid Ageniaspis citricola was evaluated, using field, cage and olfactometer tests. Treatments were: aqueous extract of neem (50 gL-1), formulated oil of neem (10 mL L-1) and control. Field study was done in a Citrus aurantifolia orchard, three applications were carried out, which were evaluated every 48 hours until ten days after the treatment. Cage and olfactometer tests were performed in a greenhouse and repeated twice each time. In the cage, it were used 50 infested Citrus reticulata plants per experimental unit, while for the olfactometer test, as experimental arena, transparent plastic jars with 20 adults of CLM inside were used. Variables evaluated were: CLM infestation, dead, live and predated larvae, pupae, emerged adults and parasitized pupal chambers. The highest mortality of the CLM was caused by the aqueous extract of neem with 77.17%, which began 48 hours after application, suggesting inhibition of feeding. The aqueous extract of neem showed in average 88.80 % of repellency of adults of CLM and neem oil 85.64%. The high mortality of CLM and the repellent effect of neem, seem to influence negatively in parasitism which fluctuated between 9.45 % and 20.16 % in treated trees.  

Impact of natural control agents of the citrus leafminer Phyllocnistis citrella on lemon trees varies among seasons

2015 ◽  
Vol 105 (6) ◽  
pp. 685-693 ◽  
Author(s):  
L. Goane ◽  
A. Casmuz ◽  
H. Salas ◽  
E. Willink ◽  
A. Mangeaud ◽  
...  
Keyword(s):  
Relevant Information ◽  
Control Agent ◽  
Mortality Factors ◽  
Phyllocnistis Citrella ◽  
Seasonal Trends ◽  
Potential Control ◽  
Citrus Leafminer ◽  
Parasitism Rates ◽  
Ageniaspis Citricola ◽  
Autumn And Winter

AbstractStudies on insect natural enemies and their effects on host populations are of immense practical value in pest management. Predation and parasitism on a citrus pest, the leafminer Phyllocnistis citrella Stainton, were evaluated by sampling over 3 years in four locations within a world leading lemon producing area in Northwest Argentina. Both mortality factors showed seasonal trends consistent across locations, with predation exerting earlier and more sustained pressure than parasitism, which showed wider seasonal variations. The dominant parasitoids, native Cirrospilus neotropicus and introduced Ageniaspis citricola, showed different seasonal trends: C. neotropicus was dominant in spring whereas A. citricola superseded it in autumn and winter. Although parasitism rates were relatively low, the native C. neotropicus revealed favourable features as potential control agent, by showing density-dependence, parasitism rates comparable with those of the specific A. citricola during part of the cycle, and earlier synchronization with the host. The study provides highly relevant information for a sustainable management of this worldwide pest, for which biological control is considered the best long-term option.

Citrus Leafminer Parasitoid, Ageniaspis citricola Logvinovskaya (Insecta: Hymenoptera: Encyrtidae)

EDIS ◽  
1969 ◽  
Vol 2004 (18) ◽  
Author(s):  
Alison Walker ◽  
Marjorie A. Hoy
Keyword(s):  
Biological Control ◽  
Control Program ◽  
Classical Biological Control ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Citrus Industry ◽  
Phyllocnistis Citrella ◽  
University Of Florida ◽  
Citrus Leafminer ◽  
Ageniaspis Citricola

The encyrtid parasitoid Ageniaspis citricola was first imported into Florida from Australia in 1994 in a classical biological control program against the citrus leafminer, Phyllocnistis citrella Stainton (Hoy and Nguyen 1994a). A second strain of Ageniaspis citricola was introduced into Florida from Taiwan in 1997, although there is no evidence that this second strain ever established (Hoy and Nguyen 1997). The citrus leafminer was first detected in Florida in 1993, and quickly spread throughout all 860,000 acres of citrus, posing a serious threat to the state's citrus industry. The population of A. citricola from Australia quickly established and dispersed throughout the state, reaching parasitism levels near 100% in some areas (Hoy et al. 1995ab, Knapp et al. 1995, Bullock et al. 1996, Pomerinke and Stansly 1998). Ageniaspis citricola is consistently the dominant parasitoid of citrus leafminer in Florida. This document is EENY-285 one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: March 2003. EENY-285/IN561: Citrus Leafminer Parasitoid, Ageniaspis citricola Logvinovskaya (Insecta: Hymenoptera: Encyrtidae) (ufl.edu)

scholarly journals Parasitoids of Phyllocnistis citrella in Jaguariúna, state of São Paulo, Brazil, before and after the introduction of Ageniaspis citricola

2000 ◽  
Vol 57 (4) ◽  
pp. 799-801 ◽  
Author(s):  
Luiz Alexandre Nogueira de Sá ◽  
Valmir Antonio Costa ◽  
Wagner Portes de Oliveira ◽  
Gilberto Ribeiro de Almeida
Keyword(s):  
Species Composition ◽  
Sao Paulo ◽  
São Paulo ◽  
Survey Period ◽  
Phyllocnistis Citrella ◽  
Predominant Species ◽  
Citrus Leafminer ◽  
Citrus Groves ◽  
Before And After ◽  
Ageniaspis Citricola

The citrus leafminer, Phyllocnistis citrella (Gracillariidae), is among the main pests of citrus in Brazil. The objective of this work was to conduct a survey of parasitoids attacking CLM in Jaguariúna, State of São Paulo, Brazil, before and after the introduction of Ageniaspis citricola (Encyrtidae). Collections of new leaves were made weekly at citrus groves from July-1997 to April-1999. During the survey period, A. citricola was introduced in the area. Before this introduction, Galeopsomyia fausta (Eulophidae) was the predominant species (about 91.83% of the species composition), but A. citricola became predominant after its establishment (60.10% against 38.30% G. fausta). Other parasitoids found were Cirrospilus sp. C (Eulophidae), Horismenus sp. (Eulophidae), Elasmus sp. (Elasmidae), Eupelmus sp. (Eupelmidae) and Conura (Ceratosmicra) sp. (Chalcididae).

scholarly journals Anatomical and Histochemical Effects of Feeding by Citrus Leafminer Larvae (Phyllocnistis citrella Stainton) in Citrus Leaves

1997 ◽  
Vol 122 (6) ◽  
pp. 829-836 ◽  
Author(s):  
D.S. Achor ◽  
H. Browning ◽  
L.G. Albrigo
Keyword(s):  
Callus Tissue ◽  
Light And Electron Microscopy ◽  
Outer Cell ◽  
Phyllocnistis Citrella ◽  
Microbial Invasion ◽  
Citrus Leafminer ◽  
Wound Recovery ◽  
Citrus Leaves ◽  
Tissue Recovery ◽  
Outer Cell Wall

Young expanding leaves of `Ambersweet' [Citrus reticulata Blanco × C. paradisi Macf. × C. reticulata) × C. sinensis (L) Osb.] with feeding injury by third larval stage of citrus leafminer (Phyllocnistis citrella) were examined by light and electron microscopy for extent of injury and tissue recovery over time. Results confirmed that injury is confined to the epidermal layer, leaving a thin covering over the mine tunnel that consisted of the cuticle and outer cell wall. Wound recovery consisted of two possible responses: the production of callus tissue or the formation of wound periderm. The production of callus tissue developed within 3 days of injury when the uninjured palisade or spongy parenchyma below the injured epidermis produced callus tissue through periclinal or diagonal cell divisions. After 1 month, the entire epidermis was replaced by callus tissue. In the absence of secondary microbial invasion, this callus tissue developed a thick cuticle, followed by development of a covering of platelet wax after 4 months. Alternatively, wound periderm formed if the outer cuticular covering was torn before the cuticle had developed sufficiently to prevent the exposed cells from being desiccated or invaded by fungi, bacteria, or other insects. The wound periderm consisted of a lignified layer of collapsed callus cells, a suberized phellem layer, and a multilayered phelloderm-phellogen. Since there were always cellular collapse or fungi and bacteria associated with wound periderm formation, it was determined to be a secondary effect, not a direct effect of leafminer feeding.

Investigation of the life history and infestation of Phyllocnistis citrella (Lepidoptera: Gracillariidae) on four different hosts

2019 ◽  
Vol 151 (3) ◽  
pp. 329-339
Author(s):  
Maryam Atapour ◽  
Shiva Osouli
Keyword(s):  
Life History ◽  
Mass Rearing ◽  
Immature Stage ◽  
Poncirus Trifoliata ◽  
Citrus Paradisi ◽  
Phyllocnistis Citrella ◽  
Citrus Leafminer ◽  
Valencia Orange ◽  
Control Programmes ◽  
History Of

AbstractPhyllocnistis citrella Stainton (Lepidoptera: Gracillariidae), also known as the citrus leafminer, is a serious pest in Citrus Linnaeus (Rutaceae) nurseries in Iran. Few studies have been performed on the life history of this pest on different citrus hosts. In this work, the infestation rate and biological aspects of P. citrella were investigated using four citrus hosts: Valencia orange (Citrus sinensis (Linnaeus) Osbeck), trifoliate orange (Poncirus trifoliata (Linnaeus) Rafinesque), grapefruit (Citrus paradisi Macfadyen), and sweet lemon (Citrus aurantifolia Swingle). Moths preferred laying eggs on leaves with a width ranging from 1–2 cm, and the highest oviposition was observed on the Valencia orange (51.2 eggs/female). The numbers of pupae and infested leaves were significantly higher on C. sinensis and C. aurantifolia. The entire developmental period of the immature stages was 13.8 and 15.4 days in C. aurantifolia and C. sinensis, respectively, while it increased to 21.8 and 24.7 days in C. paradisi and P. trifoliata. The rate of mortality of the immature stage was the highest in these two latter hosts as well (29–31%). Moths showed the highest emergence and longevity on C. sinensis and C. aurantifolia. The results indicate that C. sinensis and C. aurantifolia are susceptible hosts that can be recommended for the mass-rearing of this species in non-chemical pest control programmes.

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