Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-10T14:34:38.562Z Has data issue: false hasContentIssue false
  • English
  • Français

Spatial pattern of egg plant shoot and fruit borer, Leucinodes orbonalis Guen. (Lepidoptera: Pyraustidae) larvae

Published online by Cambridge University Press:  19 September 2011

R. P. Shukla
R. P. Shukla
Affiliation:
Division of Entomology, ICAR Research Complex for North Eastern Hill Region, Bishnupur, Shillong-793 013, Meghalaya, India
Get access

Abstract

Studies conducted on the spatial pattern of Leucinodes orbonalis Guen. larvae at the Experimental Farm, Barapani of ICAR Research Complex for NEH Region, Shillong revealed that they follow positive binomial distribution within plant, shoot and fruit. The larvae were distributed as negative binomial (contagious) within plot (2 × 2 m) at all stages of sampling except during initial and last stages of crop where they follow positive binomial distribution. The possible reason for this change in distribution may be due to comparatively lower larval densities at initial and last stages of crop.

Résumé

Cet article présente les résultats obtenus concernant spatia pattern du Leucinodes orbonalis Guen. larvae à ferme des Complex ICAR De La Recherch, Shillong, Indie ces observations ont permis certain points. La distribution du larvae sur les plante et les fruits ont positive binomial. La distribution sur les plots ont positive binomial que pendant stage initiale et finale parce que le population des larvae ont moins à stages initiale et finale.

Keywords

Spatial distributionLeucinodes orbonalisegg plantSolanum melongena
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 5 , October 1986 , pp. 611 - 615
Copyright
Copyright © ICIPE 1986

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

Anscombe, F. J. (1949) The statistical analysis of insect counts based on negative binomial distribution. Biometrics 5, 165–173.CrossRefGoogle Scholar
Bliss, C. I. and Owen, A. R. G. (1958) Negative binomial distribution with common k. Biometrika 45, 39–58.CrossRefGoogle Scholar
Burrage, R. H. and Gyrisco, G. G. (1954) Distribution of third instar larvae of the European chafer and the efficiency of various sampling units for estimating their populations. J. econ. Ent. 47, 1009–1014.CrossRefGoogle Scholar
Evans, D. A. (1953) Experimental evidence concerning contagious distribution in ecology. Biometrika 40, 186–211.CrossRefGoogle Scholar
Gangwar, S. K. and Sachan, J. N. (1981) Seasonal incidence and control of insect pests of brinjal with special reference to shoot and fruit borer, Leucinodes orbonalis Guen., in Meghalaya. J. Res. Assam agric. Univ. 2, 187–192.Google Scholar
Harcourt, D. G. (1961) Design of a sampling plan for studies on the population dynamics of the diamondback moth, Plutella maculipennis (Curt.) (Lepidoptera:Plutellidae). Can. Ent. 93, 820–831.CrossRefGoogle Scholar
Isahaque, and Choudhury, (1984) Comparative susceptibility of some varieties of egg plant to shoot and fruit borer in Assam. Indian J. agrie. Sci. 54, 751–761.Google Scholar
Iwao, S. (1968) A new regression method for analyzing the aggregation pattern of animal populations. Res. Populn Ecol. 10, 1–20.CrossRefGoogle Scholar
Jotwani, M. G. and Sarup, P. (1963) Evaluation of control schedule for brinjal, Solanum melongena L. (Var. Pusa Purple long) particulary against the fruit borer, Leucinodes orbonalis G. Indian J. Ent. 25, 275–291.Google Scholar
Krishnaiah, K., Tandon, P. L. and Jagan Mohan, N. (1976) Control of shoot and fruit borer of brinjal (Leucinodes orbonalis) Guen. with new insecticides. Pesticides 10, 41–42.Google Scholar
Lal, B. S. and Ahmad, S. Q. (1965) The biology of brinjal shoot and fruit borer, Leucinodes orbonalis Guen. J. econ. Ent. 58, 448–451.CrossRefGoogle Scholar
Lloyd, M. (1967) Mean crowding. J. Anim. Ecol. 36, 1–30.CrossRefGoogle Scholar
Shukla, R. P., Tandon, P. L. and Suman, C. L. (1984) Spatial distribution of different stages of mango stone weevil, Sternochetus mangiferae (Fabricius) (Coleoptera: Curculionidae). Agric. Ecosyst. Environ. 12, 135–140.CrossRefGoogle Scholar
Tewari, G. C. and Krishnamoorthy, P. N. (1983) Effectiveness of synthetic pyrethroids against pest complex of brinjal. Entomon 8, 365.Google Scholar
Wadley, F. M. (1950) Notes on the form of distribution of insect and plant populations. Ann. ent. Soc. Am. 43, 581–586.CrossRefGoogle Scholar