Some promising insecticidal plants

Roark, R. C.

doi:10.1007/bf02858908

Cited by 40 publications

(19 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the recipes, which are indicative of their importance in the treatment of insect transmitted diseases. Of about 1200 plant species reported in literature as having potential insecticidal value only 344 were reported to exhibit mosquitocidal activity [24][25][26] [67] have been studied. The most mentioned species among the plants encountered in the survey was Hyptis suaveolens with a use mentions index (UMi) of 0.250.…”

Section: Resultsmentioning

confidence: 99%

Ethno-medicines for Mosquito Transmitted Diseases from South-western Nigeria

Sonibare¹,

Okorie²,

Aremu³

et al. 2015

JNR

View full text Add to dashboard Cite

Ipomoea reniformis Chaos is claimed in Indian traditional medical practice to be useful in the treatment of epilepsy and neurological disorders. In the present study, pretreatment effect of methanolic extract of Ipomoea reniformis on epilepsy and psychosis was evaluated in rodents using standard procedures. Besides evaluating epileptic and behavioral parameters, neurotransmitters such as Gamma-Amino Butyric Acid (GABA) in epilepsy and in psychosis dopamine, noradrenaline and serotonin contents in the rodent brain were estimated. The extract pretreatment reduced maximal electro shock; Isoniazid (INH) and Pentylenetetrazole (PTZ) induced seizures and also significantly inhibited the attenuation of brain GABA levels by INH and PTZ in mice. These results suggested that the observed beneficial effect in epilepsy may be by enhancing the GABAergic system. The test drug also inhibited the apomorphine induced climbing and stereotyped behavior and showed significantly reduced levels of brain dopamine, noradrenaline and serotonin which may be due to blocking of central dopaminergic, noradrenergic and serotonergic pathways or by enhancing the GABAergic system. The results obtained in present study suggest that the title plant possesses antiepileptic and antipsychotic activities in rodents.

show abstract

Section: Resultsmentioning

confidence: 99%

Ethno-medicines for Mosquito Transmitted Diseases from South-western Nigeria

Sonibare¹,

Okorie²,

Aremu³

et al. 2015

JNR

View full text Add to dashboard Cite

show abstract

“…Over the past decade, several plant species have been described for their mosquitocidal properties. Roark (1947) described approximately 1,200 plant species, whilst Sukumar et al (1991) listed and discussed 344 plant species that exhibited mosquitocidal activity. Shaalan et al (2005) reviewed the current state of knowledge on larvicidal plant species and listed the growth and reproduction inhibiting phytochemicals, botanical ovicides, synergistic, additive and antagonistic joint action effects of botanical mixtures, residual capacity and effects on nontarget organisms and appearance of resistance.…”

Section: Discussionmentioning

confidence: 97%

Larvicidal activities of three plants against filarial vector Culex quinquefasciatus Say (Diptera: Culicidae)

et al. 2009

View full text Add to dashboard Cite

The methanol leaf extracts of Glochidion neilgherrense, Cinnamomum wightii and Leucas linifolia are highly toxic even at low doses proven to be useful for larvicidal, pupicidal and adulticidal activity against Culex quinquefasciatus. The extraction of Glochidion neilgherrense, Cinnamomum wightii and Leucas linifolia are dose dependent and the mortality of the larvae increases as the doses of the sample were increased. Among all the instars, the fourth instar larvae were less susceptible to the plant extracts than first instar larvae. The mortality caused by some neural and muscular disturbance by the presence of variety of active compounds such as cytotoxic diterperiods, lactones and flavonoids in the plants. It was observed that the increase in concentration of extracts increased the potential activity of biocides against Culex quinquefasciatus. The decrease in egg hatchability was found to be dose dependent. There was increase in the larval-pupal duration, developmental duration, decrease in fecundity and egg hatchability, biting deterrency, in our study. The extract showed ovipositional deterrence and effective repellence against Culex quinquefasciatus at different concentration, with the observation on that maximal egg were laid in lower concentration of the extract and control. In oviposition deterrent and gravid mortality assay, the OAI values also indicated that the gravid and oviposited females were repelled by extracts and the reduced oviposition was due to the greater mortality of adults before they oviposited, caused by treatment of plant extract which contained of variety of active compounds. All the concentration of plant extracts hared promising mosquito repellency properties when tested against the adult mosquitoes of Culex quinquefasciatus. In the biting deterrency results, increasing in the concentration of plant extracts from 1% to 4% was found to increase the biting deterrency percentage.

show abstract

“…The castor bean Ricinus communis (Euphorbiaceae) has shown a great potential as a source of insecticidal molecules against several insects (Roark 1947, Upasani et al 2003, Rahuman et al 2008, Elimam et al 2009Rossi et al 2010, Zahir et al 2011, including species of Spodoptera (Ramos-López et al 2010. Therefore, we aimed to verify the effects of an aqueous extract of leaves of castor bean by evaluating the food utilization (nutritional indices), larval development, and survival of S. frugiperda fed on different concentrations of the tested extract.…”

Section: Introductionmentioning

confidence: 99%