Replication data for: Leafminer fly (Diptera: Agromyzidae) Occurrence, Distribution and Parasitoid Associations in Field and Vegetable Crops along the Peruvian Coast
International Potato Center Dataverse OAI Archive
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Title |
Replication data for: Leafminer fly (Diptera: Agromyzidae) Occurrence, Distribution and Parasitoid Associations in Field and Vegetable Crops along the Peruvian Coast
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Identifier |
https://doi.org/10.21223/P3/MLHBIO
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Creator |
Mujica, Norma
Kroschel, Jurgen |
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Publisher |
International Potato Center
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Description |
Surveys to study the occurrence and distribution of leafminer fly and their associated parasitoids were conducted in the winter, from July to August 2003, and autumn cropping season, from April to May 2004, in ten agricultural production regions along the Peruvian coast from Tumbes (0º01´11" S) in the north of Peru to Tacna (18°21'05" S) in the south in a total of 29 provinces. In the different regions the production of field and vegetable crops as host plants of leafminer flies are not equally important, hence the sample size varied in each region. The survey did not take into account the different plant-protection measures and pesticide applications by farmers and therefore does not reflect undisturbed herbivore-parasitoid relationships. On average, 30 leafminer fly-infested leaves were randomly collected from each field sampled, covering a total of 459 fields, with 243 and 216 fields in the winter and autumn cropping season, respectively. During the daily surveys, the leaf samples collected were immediately stored in paper bags and afterwards transferred onto damp paper towels into plastic containers (15x25x10 cm) to avoid drying of the leaves. Leaf layers were separated with dry paper towels and all towels were changed at 2-day intervals for the following 6 days. Boxes were closed with a lid containing muslin windows (20x12 cm) for ventilation and kept at temperatures of 20ºC. After 7 to 10 days pupae were collected from the boxes and stored in plastic Petri dishes until adults of either leafminer flies or endoparasitoids hatched. Leaves were returned to the container to identify the ectoparastoids. Specimens were identified using conventional taxonomic keys and reference collections. Infested fields were registered based on visual assessment of presence or ausence of leafminer foliar damage. In each field, the infestation intensity was estimated by using a rating scale of four levels of leaf damage: no infestation (0%), low (1-25%), middle (26-50%) and high (> 50%) leaf infestation. These parameters were calculated in 30 plants randomly selected per field.
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Subject |
Agricultural Sciences
Potatoes Vegetables Leafminer flies Integrated pest management Parasitoids Biological control Foliar damage |
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Language |
English
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Contributor |
Administrator, CIP
International Potato Center CGIAR Research Program on Roots, Tubers and Bananas (RTB) United States Agency for International Development (USAID) Project: Control of the Leafminer, Liriomyza huidobrensis in Potatoes through IPM |
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Type |
xls
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