Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-26T06:14:46.330Z Has data issue: false hasContentIssue false
  • English
  • Français

Tradeoff Between Longevity and Fecundity in Relation to Host Availability in a Thelytokous Oophagous Parasitoid, Trichogramma brasiliensis Ashmead (Trichogrammatidae: Hymenoptera)

Published online by Cambridge University Press:  19 September 2011

B. Ramesh  and
S. Manickavasagam
B. Ramesh
Affiliation:
Biotech International Ltd., Bangalore, India
S. Manickavasagam*
Affiliation:
Department of Entomology, Faculty of Agriculture, Annamalai University, Annamalainagar – 608 002, Tamil Nadu, India
*
E-mail: [email protected]
Get access

Abstract

The biological hypothesis that female parasitoids can adjust their fecundity schedule according to host availability, and tradeoff longevity with fecundity was tested in a thelytokous oophagous parasitoid, Trichogramma brasiliensis Ashmead (Trichogrammatidae: Hymenoptera) parasitising the rice moth, Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae). The tradeoff between early and late reproduction revealed that this wasp was able to exploit practically all available hosts during the first day or first few days of adult life. During spells of host unavailability, it was able to adjust its fecundity schedule accordingly. There was a negative relationship between survival and reproduction. Adult females survived shorter (10 days) when an unlimited supply of hosts was present, but longer (16 days) when no hosts were provided. These observations suggest the potential suitability of T. brasiliensis for inundative releases even in conditions of fluctuating host availability.

Keywords

Trichogramma brasiliensislongevityfecunditytradeoffCorcyra cephalonicaTrichogramma brasiliensislongévitéféconditéadaptationCorcyra cephalonica
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 23 , Issue 3 , September 2003 , pp. 207 - 210
Copyright
Copyright © ICIPE 2003

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

Bai, B. and Smith, S. M. (1993) Effect of host availability on reproduction and survival of the parasitoid wasp Trichogramma minutum. Ecol. Entomol. 18, 279–286.CrossRefGoogle Scholar
Bai, B., Luck, R. F., Foster, L., Stephens, B. and Janseen, J. A. M. (1992) The effect of host size on quality attributes of the egg parasitoid, Trichogramma pretiosum. Entomol. Exp. Appl. 64, 37–48.CrossRefGoogle Scholar
Bell, G. and Koufopanov, V. (1986) The cost of reproduction. Oxford surveys in Evol. Biol. 3, 83–131.Google Scholar
Drost, Y. C. and Carde, R. J. (1992) Influence of host deprivation on egg load and oviposition behaviour of Brachymeria intermedia, a parasitoid of gypsy moth. Physiol. Entomol. 17, 230–234.CrossRefGoogle Scholar
Duncan, D. B. (1951) A significance test for differences between ranked treatments in an analysis of variance. Va. J. Sci. 2, 171–189.Google Scholar
Kopelman, A. H. and Chabora, P. C. (1992) Resource variability and life history parameters of Leptopilina boulardi (Hymenoptera: Eucoilidae). Ann. Entomol. Soc. Am. 85, 195–199.CrossRefGoogle Scholar
Manickavasagam, S., Baskaran, P. and Ramesh, B. (1995) Does the host availability regulate fecundity and longevity In Trichogramma? Proceedings of the 4th Intl. Symp. on Trichogramma and Other egg Parasitoids, Cairo, Egypt. 1994. INRA 72, 91–93.Google Scholar
Manickavasagam, S., Paul, A. V. N. and Farooqi, S. I. (1994) Biological attributes of four species of Trichogramma (Hym: Trichogrammatidae) A comparative study. Insect Sci. Applic. 15, 173–176.Google Scholar
Moller, H., Smith, R. H. and Sibly, R. M. (1989) Evolutionary demography of a bruchid beetle. I. Quantitative genetical analysis of the female life history. Funct. Ecol. 3, 673–681.CrossRefGoogle Scholar
Roitberg, B. D. (1989) The cost of reproduction in rosehip flies, Rhagoletis bassiola: Eggs are time. Evol. Ecol. 3, 183–188.CrossRefGoogle Scholar
Subramaniam, T. V. (1937) Preliminary experiments on mass production of Trichogramma parasites for control against sugarcane borers in Mysore. Ind. J. Agric. Sci. 7, 149–155.Google Scholar