Natural enemies and mortality factors of the coffee leafminer Leucoptera coffeella (Guérin-Ménèville) (Lepidoptera: Lyonetiidae) in Chiapas, Mexico
Natural Enemies and Mortality Factors of the Coffee Leafminer Leucoptera coffeella (Guérin-Ménèville) (Lepidoptera: Lyonetiidae) in Chiapas, Mexico. (December 2007) J. Refugio Lomeli Flores, B.S.; M.S., Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México Chair of Advisory Committee: Dr. Julio S. Bernal Through field surveys and laboratory experiments, this study assessed in part the impacts of host plant, natural enemies, and weather variables on coffee leafminer Leucoptera coffeella distribution and abundance at two elevations and two rainfall levels in coffee farms in Chiapas, Mexico. In addition, a checklist of Neotropical coffee leafminer parasitoids was assembled from field collections and literature review. Coffee leafminer field incidence was positively correlated with leaf nitrogen content and age, but in laboratory experiments coffee leafminers grew larger, developed faster, and had higher survivorship on leaves with moderate (2.9±0.01%) versus low (2.5±0.04%) or high (3.4±0.01%) nitrogen level, and on tough versus soft leaves. Ovipositional preference was not generally for leaves that maximized offspring performance. Coffee leafminer incidence was higher during the rainy versus dry season, and at low versus high elevation. Shade cover reduced ambient temperatures within coffee farms, but did not significantly affect coffee leafminer incidence.
| Main Authors: | , |
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| Format: | Texto biblioteca |
| Language: | eng |
| Published: |
Texas Texas A&M University
2007
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| Subjects: | Minador de la hoja, Enemigos naturales, Control biológico de plagas, Fincas cafetaleras, Frosur, |
| Online Access: | https://oaktrust.library.tamu.edu/handle/1969.1/ETD-TAMU-2073 |
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| Summary: | Natural Enemies and Mortality Factors of the Coffee Leafminer Leucoptera coffeella (Guérin-Ménèville) (Lepidoptera: Lyonetiidae) in Chiapas, Mexico. (December 2007) J. Refugio Lomeli Flores, B.S.; M.S., Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México Chair of Advisory Committee: Dr. Julio S. Bernal Through field surveys and laboratory experiments, this study assessed in part the impacts of host plant, natural enemies, and weather variables on coffee leafminer Leucoptera coffeella distribution and abundance at two elevations and two rainfall levels in coffee farms in Chiapas, Mexico. In addition, a checklist of Neotropical coffee leafminer parasitoids was assembled from field collections and literature review. Coffee leafminer field incidence was positively correlated with leaf nitrogen content and age, but in laboratory experiments coffee leafminers grew larger, developed faster, and had higher survivorship on leaves with moderate (2.9±0.01%) versus low (2.5±0.04%) or high (3.4±0.01%) nitrogen level, and on tough versus soft leaves. Ovipositional preference was not generally for leaves that maximized offspring performance. Coffee leafminer incidence was higher during the rainy versus dry season, and at low versus high elevation. Shade cover reduced ambient temperatures within coffee farms, but did not significantly affect coffee leafminer incidence. |
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