Further comments on analysis of covariance in insect dietary studies

Entomologia Experimentalis et Applicata - Tập 69 Số 3 - Trang 263-275 - 1993
David Horton1, Richard A. Redak2
1USDA‐ARS, 3706 W. Nob Hill Blvd., Yakima, WA 98902, USA
2Department of Entomology, University of California, Riverside, CA 92521 USA

Tóm tắt

AbstractRaubenheimer & Simpson (1992) recently discussed the advantages of using analysis of covariance in insect dietary studies as an alternative to the more conventional ratio‐based nutritional indices. We expand on some interpretations of Raubenheimer & Simpson and illustrate our points with examples from published and unpublished data sets. Specifically, we show that an ANCOVA on biomass gain incorporating initial biomass as a covariate provides information not immediately available using the analysis suggested by Raubenheimer & Simpson (ANCOVA on final biomass incorporating initial biomass as a covariate). Second, we show that dietary studies in which the covariate (food consumption) is affected by diet can provide information about the relative importance of preingestive effects (e.g., deterrence) and postingestive effects (e.g., antibiosis) on performance. Cautions about this latter use of ANCOVA are discussed.

Từ khóa


Tài liệu tham khảo

10.2307/2412740

10.1017/S0021859600022784

10.1146/annurev.en.10.010165.001231

10.1007/978-1-4612-4910-8_5

10.1126/science.212.4497.927

10.1111/j.1570-7458.1990.tb01311.x

10.1007/978-1-4612-4644-2_10

10.1126/science.200.4347.1296

10.1111/j.1570-7458.1991.tb02402.x

10.2307/2527916

Cochran W. G., 1957, Experimental Designs, 611

10.1111/j.1570-7458.1988.tb01118.x

Cox D. R., 1958, Planning of Experiments, 308

10.2307/2530040

Crampton E. W., 1934, Analysis of the comparative feeding trial by the variance and covariance methods, J. Nutrit., 7, 305, 10.1093/jn/7.3.305

Dunn O. J., 1974, Applied Statistics: Analysis of Variance and Regression

10.1111/j.1570-7458.1982.tb03136.x

10.1017/S0021859600009746

10.1080/00220973.1978.11011664

10.2307/2682785

10.1111/j.1570-7458.1976.tb02592.x

10.1007/BF00385232

10.4039/Ent1021179-9

10.1086/physzool.61.1.30163730

Packard G. C., 1989, Reply to technical comments, Physiol. Zool., 62, 1000, 10.1086/physzool.62.4.30157944

10.1007/BF01022550

10.1111/j.1570-7458.1992.tb00662.x

10.2307/2937304

Redak R. A. 1989.Plant‐Orthoptera interactions: the roles of herbivory foliage quality and sagebrush control.Ph.D. Dissertation Colorado State University Ft. Collins:147pp.

10.1016/0022-1910(86)90058-2

10.1093/aesa/69.1.55

10.1016/B978-0-08-030805-0.50009-2

Slansky F., 1989, Compensatory increases in food consumption and utilization efficiencies by velvetbean caterpillars mitigate impact of diluted diets on growth, Entomol. exp. appl., 51, 175, 10.1111/j.1570-7458.1989.tb01229.x

10.2307/2527917

Snedecor G. W., 1937, Statistical Methods, 341

Snedecor G. W., 1980, Statistical Methods, 507

Steel R. G. D., 1980, Principles and Procedures of Statistics: a Biometrical Approach, 633

10.1111/j.1570-7458.1989.tb01258.x

10.1111/j.1570-7458.1983.tb03331.x

10.1111/j.1570-7458.1962.tb00577.x

10.1016/S0065-2806(08)60230-1

Thông tin
Thông tin xuất bản

Entomologia Experimentalis et Applicata

Tập 69 Số 3

263-275

Thông tin tác giả