Advertisement

Life History of Amblyseius Fustis (Pritchard and Baker), an Indigenous Predator of the Cassava Red Mite, Oligonychus Gossypii (Zacher) in South Western Nigeria

  • T. O. Ezulike
  • J. A. Odebiyi
Research Article

Abstract

The life history of Amblyseius fustis (Pritchard and Baker) was studied in the laboratory at a fluctuating temperature and relative humidity ranging from 24.4 to 28.0°C and 55.5 to 75.6%, respectively. The developmental stages consist of egg, larva, protonymph, deutonymph and adult. The life cycle, from egg to adult of both male and female was about 8 days, while longevity was about 19.2 days. Mated female laid an average of 18.8 eggs. There was no significant difference in the longevity and fecundity of predators fed on different life stages of the host. The proportion of male to female in the progeny of mated females was 1:4.

A. fustis has a shorter developmental period and lives longer than its prey, but the latter is more fecund (26.9 eggs/♀) and has a higher proportion of females in its progeny (1:4.8). The shorter developmental period and the longer life span of the predator are likely to offset the higher fecundity of the prey.

Key Words

Predator life cycle life span fecundity prey consumption sex ratio 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Ezulike T. O. and Odebiyi J. A. (1979) Life history and population fluctuation of Oligonychus Gossypii (Zacher) on cassava in South-western Nigeria. j. W. Afr. Aci. Ass. Vol. 24.Google Scholar
  2. Kennett C. B. and Caltagirone L. E. (1968) Biosystematics of Phytoseiulus perimilis Athias-Henriot (Acarina: Phytoseiidae), Acarologia 10, 564–577.Google Scholar
  3. Laing J. E. (1968) Life history and life table of Phytoseiulus persimilis Athias-Henriot. Acarologia 10, 579–588.Google Scholar
  4. Laing J. E. (1969) Life history of Metaseiulus occidental. Ann. ent. Soc. Am. 62, 978–982.CrossRefGoogle Scholar
  5. Lee M. S. and Davis D. W. (1968) Life history and behaviour of the predatory mite Typhlodromus occidental in Utah. Ann. ent. Soc. Am. 61, 251–255.CrossRefGoogle Scholar
  6. McMurtry J. A. and Scriven G. T. (1964) Biology of the predaceous mite Typhlodromus rickeri (Acarina: Phytoseiidae). Ann. ent. Soc. Am. 57, 362–367.CrossRefGoogle Scholar
  7. Prasad V. (1967) Biology of the predatory mite Phytoseiulus macropilis in Hawaii (Acarina:Phytoseiidae). Ann. ent. Soc. Am. 60, 905–908.CrossRefGoogle Scholar

Copyright information

© ICIPE 1985

Authors and Affiliations

  • T. O. Ezulike
    • 1
  • J. A. Odebiyi
    • 1
  1. 1.Department of Agricultural BiologyUniversity of IbadanIbadanNigeria

Personalised recommendations