Tropical Animal Health and Production

, Volume 7, Issue 1, pp 45–50 | Cite as

Studies on the comparative molluscicide effects of N-tritylmorpholine and copper sulphate on the common aquatic snails in Andhra Pradesh (India)

  • S. S. Shukla
  • R. M. Roy
Helminthology

Summary

The molluscicide effects of N-tritylmorpholine (Frescon) at 0·025 ppm and copper sulphate at 10 ppm, on common aquatic snails in static waters in tanks were studied2. The application of these chemicals was not continuous. The actions of single treatment and of treatment repeated once at an interval of 2 weeks are recorded.

The results indicate that Frescon was superior to copper sulphate in that the molluscicide was safer with a more prolonged effect, as indicated by low repopulation of snails after treatment, absence of phytotoxicity and lack of toxicity to native fish. Variation in susceptibility of the three species of snails to the two molluscicides was observed.

Keywords

Public Health Copper Sulphate Indican Veterinary Medicine 

Résumé

L'action molluscicide du N-tritylmorpholone (Frescon) à 0,025 ppm et du sulfate de cuivre à 10 ppm, sur les escargots aquatiques communs dans des eaux stagnantes en citernes a été étudiée. L'application de ces produits chimiques n'a pas été continue. Les effets d'un traitement unique et d'un traitement renouvelé une nouvelle fois au bout de deux semaines sont exposés.

Les résultats montrent que le Frescon est supérieur au sulfate de cuivre, ce molluscicide étant plus sûr, à action plus prolongée, comme l'indique le faible taux de repeuplement par les escargots après traitement, d'absence de phytotoxicité et de toxicité pour les poissons. Des différences de sensibilité à ces deux molluscicides chez les trois espèces d'escargots présentes ont été observées.

Resumen

Se estudiaron los efectos molucicidas del N-tritilmorfoline en concentraciones de 0·025 ppm y del sulfato de cobre en concentraciones de 10 ppm en caracoles acuáticos comunes en aguas estáticas de tánques experimentales. La aplicación de los químicos no fue contínua. Se presentaron los resultados de aplicaciones sencillas y múltiples con intervalo de dos semanas.

Los resultados indican que el Frescon fue superior al sulfato de cobre, en cuanto el quimico fue más seguro con mayor efector residual, como lo indican la baja repoblación de caracoles después del tratamiento, la ausencia de fitotoxicidad y de efectos tóxicos en peces nativos. Se observó variación en la susceptibilidad de las tres especies de caracoles a los dos molucicidas utilizados.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Boyce, C. B. C., Crossland, N. O. &Schiff, C. J. (1966). Trials with a new molluscicide N-tritylmorpholine.Nature, London,210, 1140–1141.Google Scholar
  2. Chancellor, R. J., Coombs, A. V. & Foster, H. S. (1958). Experiments on the control of aquatic weeds by means of copper sulphate.Proc. 4th British Weed Control Conference. London British Weed Control Council.Google Scholar
  3. Crossland, N. O. (1962). A mud sampling technique for the study of ecology of aquatic snails and its use in the evalution of the efficacy of molluscicides in field trials.Bulletin of World Health Organization,27, 125.Google Scholar
  4. Crossland, N. O. (1967). Field trials to evaluate the effectiveness of the molluscicide, N-tritylmorpholine in irrigation systems.Bulletin of World Health Organization,37, 23–42.Google Scholar
  5. Paulini, E. (1964). Reference in Schiff, C. J. & Dennis Ward, E. (1966).Google Scholar
  6. Schiff, C. J. &Dennis Ward, (1966). Variation in susceptibility to three molluscicides shown by three species of aquatic snails.Bulletin of World Health Organization,34, 147.Google Scholar
  7. Schiff, C. J. (1966). Trials with N-tritylmorpholine (Shell WL 8008) as a molluscicide in Southern Rhodesia.Bulletin of World Health Organization,35, 203–212.Google Scholar
  8. Schiff, C. J., Crossland, N. O. &Miller, D. R. (1967). The susceptibility of various fish to the molluscicide, N-tritylmorpholine.Bulletin of World Health Organization,36, 500–507.Google Scholar

Copyright information

© E. & S. Livingstone Ltd 1975

Authors and Affiliations

  • S. S. Shukla
    • 1
    • 2
  • R. M. Roy
    • 1
    • 2
  1. 1.Experimental StationFascioliasis SchemeBanswadaIndia
  2. 2.Veterinary Biological and Research InstituteHyderabadIndia

Personalised recommendations