AI Article Synopsis
- The study examined how female Dinarmus basalis respond to a lack of suitable hosts, specifically looking at their egg-laying habits under pressure.
- It involved testing virgin females' oviposition on Callosobruchus maculatus hosts that were previously parasitized, revealing that superparasitism can occur even when hyperparasitism is present.
- Results showed that a majority (60.78%) of adult D. basalis that emerged were miniaturized, indicating the impact of limited host resources on their development.
Article Abstract
This study investigated the egg-laying behaviour of ectoparsitoid, Dinarmus basalis Rondani (Hymenoptera: Pteromalidae), females when faced with a prolonged deprivation of suitable hosts leading to extreme 'oviposition pressure'. The egg-laying behaviour of virgin D. basalis females was tested with Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) hosts previously parasitized by the conspecific females in which the developing larvae had reached the last larval instar (L5) or pupae. The hyperparasitism did not prevent the occurrence of superparasitism, but only one D. basalis egg from a hyperparasitized D. basalis L5 larvae reached the adult stage due to the solitary behaviour of the D. basalis larvae. Under these experimental conditions, 60.78% of the D. basalis adults emerging from larvae were miniaturized due to the depletion of host resources.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3016815 | PMC |
| http://dx.doi.org/10.1673/031.010.10101 | DOI Listing |
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