Reproductive performance of Nesolynx thymus (Hymenoptera: Eulophidae), in relation to age of Musca domestica (Diptera: Muscidae)

Aruna, A. S. and Manjunath, D. (2009) Reproductive performance of Nesolynx thymus (Hymenoptera: Eulophidae), in relation to age of Musca domestica (Diptera: Muscidae). Biocontrol Science and Technology, 19 (2). pp. 139-149. ISSN 1360-0478

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Official URL: http://doi.org/10.1080/09583150802624303

Abstract

An investigation was undertaken to record the influence of host age on the reproductive performance of Nesolynx thymus (Hymenoptera:Eulophidae). This is an indigenous, gregarious, ecto-pupal parasitoid of certain dipteran insects, including the tachinid fly, Exorista bombycis (Louis) which is a well-known endo-larval parasitoid of the silkworm, Bombyx mori. Each gravid N. thymus female was allowed to parasitise 1-4-day-old puparia of Musca domestica L. for 2 days at a parasitoid-host ratio of 1:20. The parasitised host puparia were observed for progeny recovery, sex ratio, female longevity and fitness (adult size). In addition, reproductive performance of the parasitoid progeny was assessed by allowing its females to parasitise for 2 days, 3-day-old puparia of E. bombycis at a parasitoid-host ratio of 1:4. There was a significant negative correlation between host age and parasitisation rate, parasitoid developmental duration, sex ratio and female longevity while the correlation was positive between host age and parasitoid recovery per host puparium. Similarly, negative correlation was observed between host age and morphometric parameters (body length, head width and wing span of male and female and length and width of female abdomen) of the progeny adults. Host age did not have any impact on the reproductive performance of progeny adults when allowed to parasitise puparia of E. bombycis.

Item Type: Article
Uncontrolled Keywords: Nesolynx thymus; Musca domestica; morphological; E; bombycis; progeny
Subjects: B Life Science > Sericulture
Divisions: Department of > Sericulture Science
Depositing User: Shrirekha N
Date Deposited: 29 Aug 2019 06:05
Last Modified: 29 Aug 2019 06:05
URI: http://eprints.uni-mysore.ac.in/id/eprint/7298

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