Introduction, release and recovery of several exotic natural enemies for biological control of the citrus leaf miner,Phyllocnistis citrella, in Israel

1996 ◽  
Vol 24 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Y. Argov ◽  
Y. Rossler
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Leaf Miner ◽  
Phyllocnistis Citrella ◽  
Citrus Leaf

scholarly journals Bio-control efficiency of Bacillus thuringiensis (Berliner) against the citrus leaf miner, Phyllocnistis citrella Stainton (Lep., Gracillariidae) under laboratory conditions

2016 ◽  
Vol 48 (3) ◽  
pp. 355
Author(s):  
K. Saeidi ◽  
E. Saeidi
Keyword(s):  
Bacillus Thuringiensis ◽  
Plant Protection ◽  
Ornamental Plants ◽  
Leaf Miner ◽  
Phyllocnistis Citrella ◽  
Citrus Leaf ◽  
Control Efficiency ◽  
Laboratory Conditions

The citrus leaf miner, <em>Phyllocnistis citrella</em> Stainton (Lep., Gracillariidae), is one of the most destructive pest of citrus and related Rutaceae and ornamental plants in Iran. Larvae damage leaves by creating serpentine feeding mines, which have been lead to reduce yield. Resistance and toxicity problems derived from synthetic insecticides have made it necessary to find more effective and healthier alternatives; therefore, bio-insecticides (<em>i.e</em>., <em>Bacillus thuringiensis</em>) are becoming an important component in plant protection. The aim of the present study was to evaluate the efficiency of <em>B. thuringiensis</em> against <em>P. citrella</em>. Eight <em>B. thuringiensis</em> concentrations were used against <em>P. citrella</em> L3 on orange and mortality was recorded at 1, 4, 7 and 10 days after spraying. The results showed that <em>B. thuringiensis</em> significantly affected mortality of <em>P. citrella</em>. After 1, 4, 7 and 10 days of spraying 108 concentration of <em>B. thuringiensis</em> had significantly caused the highest mortality to the pest with 59.8, 68.4, 73.6 and 77.0%, respectively. Then the mortality percent decreased until it reached 6.5, 9.5, 39.3 and 46.7% at 101 concentration, respectively. In conclusion, the study indicated that <em>B. thuringiensis</em> is effective in controlling <em>P. citrella</em> under laboratory conditions.

scholarly journals Predators impairing the natural biological control of parasitoids

2000 ◽  
Vol 29 (3) ◽  
pp. 507-514 ◽  
Author(s):  
Ronaldo Reis Jr ◽  
Og De Souza ◽  
Evaldo F. Vilela
Keyword(s):  
Biological Control ◽  
Food Web ◽  
Natural Enemies ◽  
Leaf Miner ◽  
Parasitoid Species ◽  
Coffee Plantation ◽  
Wasp Species ◽  
Control Programs ◽  
Food Web Interactions ◽  
Coffee Leaf Miner

A well known case of ineffective natural biological control: the puzzling coexistence of the coffee leaf miner, Leucoptera coffeellum (Guérin-Mèneville), and its natural enemies was analyzed. Despite being a suitable prey to eight parasitoid species and three wasp species, all occurring simultaneously, the coffee leaf miner too often presents populations far above the damaging level for the coffee plantation. It is demonstrated that predatory wasps and parasitoids interact negatively, possibly because predatory wasps kill parasitized miner's larvae. In doing so, predatory wasps indirectly kill parasitoids, thereby impairing the efficacy of the natural biological control. It is warned that biological control programs should be based on knowledge of food web interactions, rather than simply on strategies involving introduction of exotic natural enemies.

scholarly journals ATTITUDES OF CITRUS GROWERS TOWARD CITRUS LEAF MINER BIOLOGICAL CONTROL AT NUBAREYA

2016 ◽  
Vol 30 (2) ◽  
pp. 106-117
Author(s):  
Sayed Abd Elnaby Haikel ◽  
Hanan Saad El-Din Hamed ◽  
Amera Ahmed Ahmed Eid
Keyword(s):  
Biological Control ◽  
Leaf Miner ◽  
Citrus Leaf
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