Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-30T23:16:08.107Z Has data issue: false hasContentIssue false
  • English
  • Français

A TECHNIQUE FOR ESTIMATING HATCHING OF NATURAL EGG POPULATIONS OF MELANOPLUS SANGUINIPES (ORTHOPTERA: ACRIDIDAE)1

Published online by Cambridge University Press:  31 May 2012

R. L. Randell  and
M. K. Mukerji
R. L. Randell
Affiliation:
Biology Department, University of Saskatchewan, Saskatoon
M. K. Mukerji
Affiliation:
Research Station, Canada Department of Agriculture, Saskatoon
Get access Rights & Permissions [Opens in a new window]

Abstract

The earliness or lateness of the hatching period in Melanoplus sanguinipes (Fabr.) affects the type and amount of damage to the crop and the timing of control measures. An empirical model for prediction of hatching at each decile of egg populations was developed by multiple regression using daily maximum air temperatures for a unit interval of 5 days from 2 March to 29 June and embryonic development in the preceding fall. The model accounted for a maximum of 96% of the variance in hatching date. It showed the average effect of a unit change of 1° of daily maximum temperature for each of the 24 5-day intervals on the number of days to hatch. The time and pattern of hatching of the major bulk of egg population was dependent mainly on spring temperature; however, fall embryonic development accounted for considerable variation in hatching time especially of the less developed eggs. The implications for population growth and certain assumptions made during the analyses in this study are discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 106 , Issue 8 , August 1974 , pp. 801 - 812
Copyright
Copyright © Entomological Society of Canada 1974

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Brooks, A. R. 1958. Acridoidea of southern Alberta, Saskatchewan, and Manitoba (Orthoptera). Can. Ent. Suppl. 9. 92 pp.Google Scholar
Church, N. S. and Salt, R. W.. 1952. Some effects of temperature on development and diapause in eggs of Melanoplus bivittatus (Say) (Orthoptera: Acrididae). Can. J. Zool. 61: 173–184.CrossRefGoogle Scholar
Fisher, R. A. and Yates, F.. 1957. Statistical tables for biological, agricultural and medical research. 5th ed. Oliver and Boyd, London.Google Scholar
Handford, R. H. 1946. Identification of nymphs of the genus Melanoplus of Manitoba and adjacent areas. Scient. Agric. 61: 147–180.Google Scholar
Moore, H. W. 1948. Variations in fall embryological development in three grasshopper species. Can. Ent. 61: 83–88.CrossRefGoogle Scholar
Morris, R. F. and Bennett, C. W.. 1967. Seasonal population trends and extensive census methods for Hyphantria cunea. Can. Ent. 61: 9–17.CrossRefGoogle Scholar
Pickford, R. 1960. Survival, fecundity, and population growth of Melanoplus bilituratus (Wlk.) (Orthoptera: Acrididae) in relation to date of hatching. Can. Ent. 61: 1–10.CrossRefGoogle Scholar
Pickford, R. 1966. The influence of date of oviposition and climatic conditions on hatching of Camnula pellucida (Scudder) (Orthoptera: Acrididae). Can. Ent. 61: 1145–1159.CrossRefGoogle Scholar
Pickford, R. 1970. The effects of climatic factors on egg survival and fecundity in grasshoppers. Proc. int. Study Conf. Current and future problems of Acridology, pp. 257–260.Google Scholar
Putnam, L. G. 1963. The progress of nymphal development in pest grasshoppers (Acrididae) of western Canada. Can. Ent. 61: 1210–1216.CrossRefGoogle Scholar
Riegert, P. W. 1948. The field biology of Camnula pellucida (Scudd.). M.Sc. Thesis, Montana State College.Google Scholar
Riegert, P. W. 1964. Grasshoppers will hatch when? How age and probable date of grasshopper hatch can be determined. Res. Fmrs 61: 11–14.Google Scholar
Riegert, P. W. and Pickford, R.. 1963. Surveys of adult grasshoppers in Saskatchewan in relation to seasonal development. Can. Ent. 61: 936–941.CrossRefGoogle Scholar
Shotwell, R. L. 1941. Life histories and habits of some grasshoppers of economic importance. Tech. Bull. U.S. Dep. Agric., No. 774. 47 pp.Google Scholar
Shotwell, R. L. 1965. Forecasting the hatching period of grasshoppers from weather data. Agric. Res. Serv. U.S. Dep. Agric. 22 pp.Google Scholar
Uvarov, B. P. 1931. Insects and climate. Trans. R. ent. Soc. Lond. 61: 1–247.CrossRefGoogle Scholar