scholarly journals Synthetic sex pheromone of citrus leafminer in Brazilian citrus groves

2009 ◽  
Vol 44 (7) ◽  
pp. 676-680 ◽  
Author(s):  
Ana Lia Parra-Pedrazzoli ◽  
Walter Soares Leal ◽  
Evaldo Ferreira Vilela ◽  
Marcelo Costa Mendonça ◽  
José Maurício Simões Bento
Keyword(s):  
Sex Pheromone ◽  
Northeastern Brazil ◽  
Phyllocnistis Citrella ◽  
Comparable Rate ◽  
Citrus Leafminer ◽  
Citrus Groves ◽  
Trap Color ◽  
Synthetic Sex Pheromone ◽  
Trap Height

The objective of this work was to determine the best conditions of use of the synthetic sex pheromone of Phyllocnistis citrella Stainton for monitoring this species in citrus groves in northeastern Brazil. Pheromone doses (0.0, 0.1, 1, 10 and 100 μg) and longevity (1, 15, 29, 43 and 57-day-old lures) and trap height (0.5, 1.5 and 2.5 m), color (green, red, and white) and model influence on P. citrella males capture were evaluated. The doses of 10 and 100 μg of the synthetic sex pheromone - a 3:1 blend of (Z,Z,E)-7,11,13-hexadecatrienal and (Z,Z)-7,11-hexadecadienal - attracted the greatest number of P. citrella males. Traps baited with these two both dosages continued to capture P. citrella males at a comparable rate for over eight weeks in citrus groves. Although there was no significant decrease in activity of both dosages until 57 days of exposure to the environment, the higher dose, as time passed, attracted significantly more P. citrella males than the lower dose. There were no significant differences in male capture in traps with synthetic sex pheromone placed at 1.5 and 2.5 m height, wich had the better results. Trap color and model did not affect male capture.

scholarly journals Towards the identification and synthesis of the sex pheromone of the citrus leafminer, Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae)

2006 ◽  
Vol 35 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Ana L. Parra-Pedrazzoli ◽  
Allard Cossé ◽  
Yasuhiro Murata ◽  
José M.S. Bento ◽  
Evaldo F. Vilela ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Phyllocnistis Citrella ◽  
Citrus Leafminer

A total and convergent synthesis of (7Z,11Z,13E)-7,11,13-Hexadecatrienal, the major sex pheromone component of the citrus leafminer, Phyllocnistis citrella

2020 ◽  
Vol 30 ◽  
pp. 100567
Author(s):  
Ramchandra Awalekar ◽  
Priyanka Mohire ◽  
Navanath Valekar ◽  
Shams Usmani ◽  
Shilpa Salunkhe ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Pheromone Component ◽  
Phyllocnistis Citrella ◽  
Convergent Synthesis ◽  
Citrus Leafminer

Identification, Synthesis, and Field Evaluation of the Sex Pheromone from the Citrus Leafminer, Phyllocnistis citrella

2006 ◽  
Vol 32 (1) ◽  
pp. 155-168 ◽  
Author(s):  
Walter S. Leal ◽  
Ana Lia Parra-Pedrazzoli ◽  
Allard A. Cossé ◽  
Yasuhiro Murata ◽  
José Maurício S. Bento ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Field Evaluation ◽  
Phyllocnistis Citrella ◽  
Citrus Leafminer

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).

The influence of behaviour modifying chemicals on mating success of the red bollworm Diparopsis castanea Hmps. (Lepidoptera, Noctuidae) in Malawi

1976 ◽  
Vol 66 (2) ◽  
pp. 279-300 ◽  
Author(s):  
R. J. Marks
Keyword(s):  
Sex Pheromone ◽  
Sexual Attraction ◽  
Practical Method ◽  
Pheromone Trap ◽  
Cotton Field ◽  
Field Cage ◽  
Synthetic Sex Pheromone ◽  
Trap Catches ◽  
First Time ◽  
Lepidoptera Noctuidae

AbstractThe synthetic sex pheromone (dicastalure) of the red bollworm of cotton, Diparopsis castanea Hmps., in Central and Southern Africa, and an inhibitor of male sexual attraction (trans-9-dodecenyl acetate,=IIA), were used in an enclosed 0·2 ha cotton field-cage to reduce successful female matings. Over one month dicastalure at 21·0 and 42·3 g/ha produced average reductions in mating of 47·9% and 72·5% respectively and 37·9 g IIA/ha produced an overall reduction in mating of 71·5%, or 79·5% in released moth populations, over the same period. The proportion of virgin females present in disruption situations was significantly greater than in untreated populations and was density-independent for moth populations of up to 2 200/ha. The proportion of fertile eggs in disruption situations was correspondingly reduced to 30·2% from an average of 67·9% in control cycles. Reduction in sex pheromone trap catches is an unsatisfactory indicator of the extent to which males are prevented from inseminating females and considerably over-estimates the true degree of disruption. This is the first time that a naturally occurring inhibitor has been used successfully to disrupt mating in a field population of insects and it indicates the potential of the method for the control of high density pest populations in cotton. However, use of polyethylene dispensing mechanisms similar to those used in the field-cage disruption experiments would be unsuitable as a practical method of dispensing behaviour modifying chemicals and it is suggested that, for suitably controlled release of such chemicals, currently available microencapsulation technology offers the best prospects.

Enantioselective Synthesis of the Sex Pheromone of Lichen Moth, Miltochrista calamine, and Its Diastereomer

Synlett ◽  
2021 ◽  
Author(s):  
Jiangchun Zhong ◽  
Gucheng Yuan ◽  
Jiawei Liu ◽  
Shihang Yu ◽  
Xueyang Wang ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Enantioselective Synthesis ◽  
Synthetic Approach ◽  
Chiral Auxiliaries ◽  
Synthetic Sex Pheromone ◽  
Key Steps

AbstractThe synthesis of a Miltochrista calamine sex pheromone and its diastereomer has been developed. The key steps of the synthetic approach involved Evans’ chiral auxiliaries and the addition of alkyne to aldehyde, which were firstly applied to prepare this sex pheromone and its diastereomer. The synthetic sex pheromone could be used to trap insects and study physiological and ecological questions of the lichen moth.

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.

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