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Observations on the physiology of diapause and non-diapause larvae of Busseola fusca (Fuller) (Lep., Noctuidae)

Published online by Cambridge University Press:  10 July 2009

E. J. Usua
E. J. Usua
Affiliation:
Department of Biological Sciences, University of Lagos, Yaba, Lagos, Nigeria
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Abstract

Experiments were done to compare respiration rate, thermal death point, weight loss and the life span of diapause and non-diapause larvae of Busseola fusca (Fuller). The oxygen consumed by non-diapause larvae was 578–772 mm3/g/h while that by diapause larvae was 58–238 mm3/g/h. Thermal death points for both types of larvae were in the range 46·5–49·5 °C. At high and low relative humidities non-diapause larvae lost 4·4% and 16·3% of their weight, respectively, while diapause larvae lost only 1·0% and 7·0%. At 46° and 48°C the percentage weight loss by non-diapause larvae was about twice as much as that by diapause larvae. Life span was greater at a saturation deficit of 14·2–22·5 mm Hg in both types of larvae than either at 2·8–14·2 mm Hg or 22·5–28·0 mm Hg. At this range starving non-diapause larvae lived for 4·3–5·1 days and the diapause larvae for 7·7–8·7 days. The main factor enabling diapause larvae to survive adverse conditions appears to be their efficient water conservation mechanism.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 63 , Issue 3 , March 1974 , pp. 513 - 518
Copyright
Copyright © Cambridge University Press 1974

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References

Beck, S. D. & Hanec, W. (1960). Diapause in the European corn borer, Pyrausta nnbilalis (Hübn.).—J. Insect Physiol. 4, 304–318.Google Scholar
Burges, H. D. (1960). Studies on the Dermestid beetle, Trogoderma granarium Everts.—IV. Feeding, growth, and respiration with particular reference to diapause larvae.—J. Insect Physiol. 5, 317–334.Google Scholar
Clarke, K. U. & Balwin, R. W. (1960). The effect of insect hormones and of 2,4-dinitro-phenol on the mitochondrion of Locusta migratoria L.—J. Insect Physiol. 5, 37–46.Google Scholar
Dickson, R. C. (1949). Factors governing the induction of diapause in the oriental fruit moth.—Ann. ent. Soc. Am. 42, 511–537.Google Scholar
Gunn, D. L. & Notley, F. B. (1936). The temperature and humidity relations of the cockroach. IV. Thermal death-point.—J. exp. Biol. 13, 28–34.Google Scholar
Hansen, L. D. & Harwood, R. F. (1968). Comparisons of diapause and nondiapause larvae of the codling moth, Carpocapsa pomonella.—Ann. ent. Soc. Am. 61, 1611–1617.Google Scholar
Harman, J. W. (1950). Studies on mitochondria. I. The association of cyclophorase with mitochondria.—Exp. Cell Res. 1, 382–393.Google Scholar
Madge, D. S. (1961). The control of relative humidity with aqueous solutions of sodium hydroxide.—Entomologia exp. appl. 4, 143–147.Google Scholar
Phillips, J. R. & Newsom, L. D. (1966). Diapause in Heliothis zea and Heliothis virescens (Lepidoptera: Noctuidae).—Ann. ent. Soc. Am. 59, 154–159.Google Scholar
Prebble, M. L. (1941). Diapause and related phenomena in Gilpinia polytoma (Hartig). II. Factors influencing the breaking of diapause.—Can. J. Res. 19, 323–346.Google Scholar
Schneider, W. C. (1959). Mitochondrial metabolism.—Adv. Enzymol. 21, 1–72.Google Scholar
Schneidermann, H. A. & Williams, C. M. (1953). The physiology of insect diapause. VII. The respiratory metabolism of the cecropia silkworm during diapause and development.—Biol. Bull. mar. biol. Lab., Woods Hole 105, 320–334.Google Scholar
Squire, F. A. (1940). On the nature and origin of the diapause in Platyedra gossypiella, Saund. —Bull. ent. Res. 31, 1–6.Google Scholar
Stegwee, D. (1964). Respiratory chain metabolism in the Colorado potato beetle.—II. Respiration and oxidative phosphorylation in ‘sarcosomes’from diapausing beetles.—J. Insect Physiol. 10, 97–102.Google Scholar
Umbreit, W. W., Burris, R. H. & Stauffer, J. F. (1957). Manometric techniques; a manual describing methods applicable to the study of tissue metabolism.—3rd edn., 305 pp. Minneapolis, Burgess.Google Scholar
Usua, E. J. (1972). Diapause in the maize stemborer, Busseola fusca Fuller. (Lepidoptera: Noctuidae).—173 pp. Ph.D. thesis, University of Lagos, Nigeria.Google Scholar
Wigglesworth, V. B. (1953). The principles of insect physiology.—5th edn., 546 pp. London, Methuen.Google Scholar