Influence of Temperature on Age-Specific Fecundity of the Ladybeetle Micraspis discolor (Fabricius)

  • OmkarEmail author
  • Ahmad Pervez
Research Article


The influence of temperature on the age-specific fecundity of an aphidophagous ladybeetle, Micraspis discolor (Fabricius) (Coleoptera: Coccinellidae) feeding on the cowpea aphid, Aphis craccivora Koch (Homoptera: Aphididae) at four different temperatures, viz. 20, 25, 27 and 30°C, was investigated. The age-specific fecundity function was triangular and oviposition rate (no. of eggs/day) increased with increase in reproductive age of the ladybeetle, attaining a peak then gradually decreasing before finally ceasing. Young adults were more efficient at converting aphid biomass into eggs than older ones. The oviposition peak tended to shift towards younger females and the oviposition rate increased with increase in temperature from 20 to 27°C. The maximum fecundity and percent egg viability was 750 eggs and 95% at 27°C and minimum 385 eggs and 65% at 20°C, respectively.

Key Words

ladybeetle Micraspis discolor predator aphids temperature fecundity 


L’influence de la température sur l’évolution de la fécondité de la coccinelle aphidiphage Micraspis discolor (Fabricius) (Coleoptera: Coccinellidae) se nourissant sur le puceron du niébé, Aphis craccivora Koch (Homoptera: Aphididae) a été étudiée à quatre températures différentes, 20, 25, 27 et 30°C. Le taux d’oviposition (nb d’oeufs/jour) augmente avec l’âge reproducteur de la coccinelle, atteignant un pic puis diminuant progressivement avant de cesser. La conversion de la biomasse des pucerons en oeufs est plus performante chez les jeunes adultes que chez les individus âgés. Le pic d’oviposition s’observe chez les jeunes femelles et le taux d’oviposition augmente avec la température entre 20 et 27°C La fécondité et le pourcentage d’oeufs viables sont maximum à 27°C avec 750 oeufs et 95% et minimum à 20°C avec 385 oeufs et 65%.

Mots Clés

coccinelle Micraspis discolor prédateur pucerons température évolution dé la fécondité 


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  1. Agarwala B. K. (1987) Natural food range and feeding habits of aphidophagous insects in north east India. J. Aphidol. 1, 18–22.Google Scholar
  2. Agarwala B. K., Das S. and Chaudhuri M. S. (1988) Biology and food relations of Micraspis discolor (F.): An aphidophagous coccinellid of India. J. Aphidol. 2, 7–17.Google Scholar
  3. Agarwala B. K. and Ghosh A. K. (1988) Prey records of aphidophagous Coccinellidae in India. A review and bibliography. Trop. Pest Manage. 34, 1–14.CrossRefGoogle Scholar
  4. Bind R. B. (1998) Bioecology and behaviour of a ladybird beetle, Cheilomenes (=Menochilus) sexmaculata (Fabricius) (Coleoptera: Coccinellidae). PhD Thesis. University of Lucknow, Lucknow. 164 pp.Google Scholar
  5. Dixon A. F. G. (2000) Insect Predator-Prey Dynamics, Ladybird Beetles and Biological Control. Cambridge University Press. 257 pp.Google Scholar
  6. Gautam R. D. (1994) Biological Pest Suppression. Wesrvill Publishing House, New Delhi. 219 pp.Google Scholar
  7. Iperti G. and Paoletti M. G. (1999) Biodiversity of predaceous Coccinellidae in relation to bioindication and economic importance. Special issue. Invertebrate biodiversity as bioindicators of sustainable landscapes. Practical use of invertebrates to assess sustainable land use. Agric. Ecosyst. Environ, 74, 323–342.CrossRefGoogle Scholar
  8. Jalali S. K., Singh S. P. and Biswas S. R. (1999) Effect of temperature and female age on the development and progeny production of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae). Entomon 24, 293–296.Google Scholar
  9. James B. E. (2001) Contribution on certain aspects of bioecology of a ladybeetle, Coccinella transversalis Fabricius (Coccinellidae: Coleoptera). PhD Thesis. Department of Zoology, University of Lucknow. 190 pp.Google Scholar
  10. Ofuya T. I. and Akingbohungbe A. E. (1988) Functional and numerical responses of Cheilomenes lunata (Fabricius) (Coleoptera: Coccinellidae) feeding on cowpea aphid, Aphis craccivora Koch (Homoptera: Aphididae). Insect Sci. Applic. 9, 543–546.Google Scholar
  11. Omkar and Bind R. B. (1993) Records of aphids—natural enemies complex of Uttar Pradesh. II. The Coccinellids. J. Adv. Zool. 14, 96–99.Google Scholar
  12. Omkar and Pervez A. (2000a) Prey preference of a ladybeetle, Micraspis discolor (Fabricius). Proceedings of Seventh National Symposium on Aphidology, 11–13 March 2000, DDU Gorakhpur University, Gorakhpur 55.Google Scholar
  13. Omkar and Pervez A. (2000b) Well marked sexual dimorphism in a ladybird beetle, Micraspis discolor (Fabricius) (Coccinellidae: Coleoptera). Insect Environ. 5, 150–151.Google Scholar
  14. Omkar and Pervez A. (2000c) Biodiversity of predaceous coccinellids (Coleoptera: Coccinellidae) in India: A review. J. Aphidol. 14, 41–66.Google Scholar
  15. Ponsonby D.J. and Copland M.J.W. (1998) Environmental influences on fecundity, egg viability and egg cannibalism in the scale insect predator, Chilocorus nigritus. BioControl 43, 39–52.CrossRefGoogle Scholar
  16. Phoofolo M.W. and Obrycki J. J. (2000) Demographic analysis of reproduction in Nearctic and Palearctic populations of Coccinella septempunctata and Propylea quatuordecimpunctata. BioControl 145, 25–43.CrossRefGoogle Scholar
  17. Singh H. S. and Singh R. (1994) Life fecundity table of Coccinella septempunctata Linn. predation on mustard aphid (Lipaphis erysimi Kalt.) under laboratory and field conditions. J. Entomol. Res. 18, 297–303.Google Scholar
  18. Srivastava S. (2000) Certain aspects of bioecology and ethology of a ladybeetle Coccinella septempunctata Linnaeus (Coccinellidae: Coleoptera). PhD Thesis. University of Lucknow, Lucknow. 160 pp.Google Scholar
  19. Stearns S.C. and Koella J.C. (1986) The evolution of phenotopic plasticity in life-history traits: Predictions of reaction norms for age and size at maturity. Evolution 40, 893–913.CrossRefGoogle Scholar
  20. Veeravel R. and Baskaran P. (1997) Functional and numerical responses of Coccinella transversalis Fab. and Cheilomenes sexmaculatus Fab. feeding on the melon aphid, Aphis gossypii Glov. Insect Sci. Applic. 17, 335–339.Google Scholar

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© ICIPE 2002

Authors and Affiliations

  1. 1.Department of ZoologyUniversity of LucknowLucknowIndia

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