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Impact of Catharanthus roseus leaf ethanol extract on survival, growth and development of Dysdercus koenigii (Heteroptera: Pyrrhocoridae)

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Title Impact of Catharanthus roseus leaf ethanol extract on survival, growth and development of Dysdercus koenigii (Heteroptera: Pyrrhocoridae)
 
Creator Shazad, Mohd
Kayesth, Sunil
Kumar, Shailendra
Kapoor, Neera
Gupta, Kamal Kumar
 
Subject Catharanthus roseus
Cr-LEE
Dysdercus koenigii
GC-MS
Growth and development
 
Description 302-312
The effects of Catharanthus roseus leaf ethanol extract (Cr-LEE) on the survival, growth, and development of Dysdercus
koenigii Fabricius were studied. The experiments were conducted on 0-12 hour-old fifth instar nymphs reared and
maintained in the laboratory under optimum conditions. Catharanthus roseus leaf ethanol extract (Cr-LEE) was applied
topically at doses 40, 100, 200, and 400 μg/Insect to the fifth instar nymphs. The results indicate that treating fifth-instar
nymphs with Cr-LEE affected their survival and development. The effects on survival, growth, and development were
dose-dependent. Treatment at doses 200 and 400 μg/Insect shows high mortality, especially during the later part of their life.
Different developmental anomalies, such as supernumerary nymphal stage, adultoid, adult with deformed wings, adult
with exuviae attached to different parts of the body, and adult with shrunken body, were observed. Often, the nymphs died
due to abortive moulting. The gas chromatography and mass spectroscopy (GC-MS) analysis of the Cr-LEE revealed the
presence of chemical compounds having insecticidal and insect-repellent activity and compounds that are intermediate in the
juvenile hormone (JH) biosynthetic pathways. These compounds may act as JH mimics or Juvenoids for insect pests.
Therefore, it is apprehended that the phytoconstituents of Cr-LEE singly or synergistically affect the survival, growth and
development of D. koenigii.
 
Date 2024-08-06T05:16:08Z
2024-08-06T05:16:08Z
2024-08
 
Type Article
 
Identifier 0976-0512 (Online); 0976-0504 (Print)
http://nopr.niscpr.res.in/handle/123456789/64370
https://doi.org/10.56042/ijnpr.v15i2.12190
 
Language en
 
Relation Int. cl. (2021.01)− A01N, A01N 25/00, A01N 65/00, A01P
 
Publisher NIScPR-CSIR,India
 
Source IJNPR Vol.15(2) [June 2024]