A temperature-dependent model of egg development of the western corn rootworm, diabrotica virgifera virgifera leconte (coleoptera: chrysomelidae). Schaafsma, A., Whitfield, G., & Ellis, C. The Canadian Entomologist, 123(06):1183–1197, December, 1991. ![A temperature-dependent model of egg development of the western corn rootworm, diabrotica virgifera virgifera leconte (coleoptera: chrysomelidae) [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Developmental rates of post-diapause eggs of Diabrotica virgifera virgifera LeConte were compared in the laboratory at six constant temperatures, 12, 16, 20, 24, 28, and 32°C. Linear and nonlinear models were fitted to temperature versus developmental data and were used to predict egg hatch in the field. A four-parameter model fitted to median developmental rates (r2 = 0.99) indicated that development was linear between 16 and 28°C, optimal at 28°C, and decreased at 32°C. The lower development threshold (± SE) (10.5 ± 0.1°C) was determined by linear regression and the x-intercept method. Completion of post-diapause egg development required 258 ± 3 degree-days (± SE) above the base temperature. This compared well with the mean degree-days accumulated to 50% hatch (± SE) of 265 ± 24 which we observed in the field at several locations over 3 years using a degree-day model incorporating an 11°C developmental threshold and soil temperatures at 5- and 10-cm depths. A stochastic simulation model, incorporating a nonlinear developmental function dependant on soil temperatures taken every 2 h also predicted 50% hatch within 2 days. This model was validated in the field with 19 independent records of soil temperatures for several locations at two depths in the soil over 3 years. The simulation model accurately predicted time of 5 and 95% hatch, which indicates that this model has broad application in predicting the pattern of egg hatch for pest management.
@article{schaafsma_temperature-dependent_1991,
title = {A temperature-dependent model of egg development of the western corn rootworm, diabrotica virgifera virgifera leconte (coleoptera: chrysomelidae)},
volume = {123},
issn = {0008-347X, 1918-3240},
shorttitle = {A {TEMPERATURE}-{DEPENDENT} {MODEL} {OF} {EGG} {DEVELOPMENT} {OF} {THE} {WESTERN} {CORN} {ROOTWORM}, {DIABROTICA} {VIRGIFERA} {VIRGIFERA} {LECONTE} ({COLEOPTERA}},
url = {http://www.journals.cambridge.org/abstract_S0008347X0002455X},
doi = {10.4039/Ent1231183-6},
abstract = {Developmental rates of post-diapause eggs of Diabrotica virgifera virgifera LeConte were compared in the laboratory at six constant temperatures, 12, 16, 20, 24, 28, and 32°C. Linear and nonlinear models were fitted to temperature versus developmental data and were used to predict egg hatch in the field. A four-parameter model fitted to median developmental rates (r2 = 0.99) indicated that development was linear between 16 and 28°C, optimal at 28°C, and decreased at 32°C. The lower development threshold (± SE) (10.5 ± 0.1°C) was determined by linear regression and the x-intercept method. Completion of post-diapause egg development required 258 ± 3 degree-days (± SE) above the base temperature. This compared well with the mean degree-days accumulated to 50\% hatch (± SE) of 265 ± 24 which we observed in the field at several locations over 3 years using a degree-day model incorporating an 11°C developmental threshold and soil temperatures at 5- and 10-cm depths. A stochastic simulation model, incorporating a nonlinear developmental function dependant on soil temperatures taken every 2 h also predicted 50\% hatch within 2 days. This model was validated in the field with 19 independent records of soil temperatures for several locations at two depths in the soil over 3 years. The simulation model accurately predicted time of 5 and 95\% hatch, which indicates that this model has broad application in predicting the pattern of egg hatch for pest management.},
language = {en},
number = {06},
urldate = {2017-08-31},
journal = {The Canadian Entomologist},
author = {Schaafsma, A.W. and Whitfield, G.H. and Ellis, C.R.},
month = dec,
year = {1991},
pages = {1183--1197}
}
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