Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
Journal of Entomology
  Year: 2014 | Volume: 11 | Issue: 1 | Page No.: 1-13
DOI: 10.3923/je.2014.1.13
Neural Activity of a Locust Ganglion is Impaired by Limonene and Lovage (Levisticum officinale) Extracts
Safaa M. Halawa and Reinhold Hustert

Abstract:
Essential oil from lovage (Levisticum officinale Koch.) is a potential low-risk insecticide containing monoterpenes. It was tested with increasing concentrations in saline for neural effects on the autonomous ventilatory rhythm of an isolated abdominal ganglion (AG5) which supplies the fifth abdominal segment of Locusta migratoria (Linneus). The inhibition by lovage oil was compared with that of its main components, the enantiomers of limonene (D- and L-limonene). All substances depressed the persistent ventilatory motor output: the concentration-dependent reduction of the neural activity was measured with the average Action Potential (AP) frequency of the inspiratory motoneurons in the median nerve. Occasionally the motor output could switch from bursting activity with more or less gradual transients to continuous tonic firing. Recovery of the AG5 in pure saline after highest concentrations had been applied was gradual but the ventilatory output never returned completely to the pre-application level of motor activity. The strong short-term neurotoxic effects of the limonene enantiomeres in the insect CNS are followed by a moderate long term neural depression.
PDF Fulltext XML References Citation Report Citation
 RELATED ARTICLES:
  •    Toxic and Repellence Activities of Four Plant Extracts to Dermestes maculatus Degeer on Smoked African Mud Catfish, Clarias gariepinus Burchell
  •    Oviposition Deterrent Activity of Some Volatile Oils against the Filaria Mosquito Vector Culex pipiens
  •    Toxicity Experiments of the Saponic Extract of Cestrum Parqui (Solanaceae) on Some Insect Spices
  •    Studies of Larvicidal and Adulticidal Activities of Some Halophyte Plant Extracts Against Ceratitis capitata (Wiedemann)
How to cite this article:

Safaa M. Halawa and Reinhold Hustert, 2014. Neural Activity of a Locust Ganglion is Impaired by Limonene and Lovage (Levisticum officinale) Extracts. Journal of Entomology, 11: 1-13.

DOI: 10.3923/je.2014.1.13

URL: https://scialert.net/abstract/?doi=je.2014.1.13

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 

       

       

Curve Bottom