Assessing Host-Plant Finding by Insects

Finch, S.

doi:10.1007/978-1-4612-4910-8_2

Cited by 26 publications

(18 citation statements)

References 86 publications

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“…After extraction, the essential oil was transferred to a glass vial, and its purification was made by separation of the remnant water by freezing, and the essential oil which was kept in liquid phase, was drained from the vial [48]. …”

Section: Methodsmentioning

confidence: 99%

Insecticidal activity of the essential oil from fruits and seeds of Schinus terebinthifolia Raddi against African malaria vectors

et al. 2011

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BackgroundAlternative insecticides for the control of malaria and filarial vectors are of paramount need as resistance is increasing among classes of insecticides currently in use in the public health sector. In this study, mosquitocidal activity of Schinus terebinthifolia essential oil against Anopheles gambiae s.s., An. arabiensis and Culex quinquefasciatus was assessed in laboratory, semi- field and full- field conditionsMethodTwenty third instar larvae of both Anopheles gambiae s.s. and Cx. quinquefasciatus were exposed to different dosages of plant extract in both laboratory and semi- field environments. Observation of the mortality response was assessed at intervals of 12, 24, 48 and 72 hours. Adult semi- gravid female mosquitoes were exposed to papers treated with S. terebinthifolia and compared with WHO standard paper treated with alphacypermethrin (0.05%).ResultsGas chromatography, coupled to mass spectrometry, identified 15 compounds from S. terebinthifolia extracts, the most abundant identified compound was δ-3-carene (55.36%) and the least was γ-elemene (0.41%). The density of the oil was found to be 0.8086 g/ml. The effective dosages in the insectary ranged from 202.15 to 2625.20 ppm and were further evaluated in the semi- field situation. In the laboratory, the mortality of Cx. quinquefasciatus ranged from 0.5 to 96.75% while for An. gambiae s.s it was from 13.75 to 97.91%. In the semi- field experiments, the mortality rates observed varied for both species with time and concentrations. The LC50 and LC95 value in the laboratory was similar for both species while in the semi- field they were different for each. In wild, adult mosquitoes, the KT50 for S. terebinthifolia was 11.29 minutes while for alphacypermethrin was 19.34 minutes. The 24 hour mortality was found to be 100.0% for S. terebinthifolia and 75.0% for alphacypermethrin which was statistically significant (P < 0.001).ConclusionThe efficacy shown by essential oils of fruits and seeds of S. terebinthifolia has given an opportunity for further investigation of individual components of these plant extracts and to evaluate them in small- scale field trials.

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Section: Methodsmentioning

confidence: 99%

Insecticidal activity of the essential oil from fruits and seeds of Schinus terebinthifolia Raddi against African malaria vectors

et al. 2011

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“…"An assay in which the detector is a living organism or part of its sensory system is referred to as a bioassay" (Finch 1986). Bioassays are the basic tools required to assess the biological activity of behavioral stimuli used during host or mate finding and the physiological responses to compounds that determine the quality of hosts for utilization.…”

Section: Scope Of the Chaptermentioning

confidence: 99%

“…Historically, it has been far more difficult to monitor insect responses to host odors than to their sex pheromones (e.g., Finch 1986). This may be due to the fact that responses to food may be less specific than responses to pheromones released by potential mates.…”

Section: Moving Air Bioassays (Olfactometers and Wind Tunnels)mentioning

confidence: 99%

“…Experimental techniques to bioassay chemicals mediating one important class of interactionshost-plant location and identification by phytophagous insects-were also compiled and reviewed by Finch (1986) and by Singer (1986). Bioassays for hostplant selection and ingestion by plant-feeding insects have been reviewed by Lewis and van Emden (1986), Berenbaum (1986), and Kogan (1986).…”

Section: Introductionmentioning

confidence: 99%

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Bioassay Methods with Terrestrial Invertebrates

Hare¹

1998

Methods in Chemical Ecology Volume 2

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“…Selection of oviposition sites by phytophagous insects generally involves some degree of interplay between sensory modalities (St~dler, 1977;Prokopy, 1986;Harris & Miller, 1988). Yet, understanding of the interplay between visual and olfactory stimuli during the location phase of host-plant selection, is rudimentary (Ahmad, 1983;Prokopy & Owens, 1983;Miller & Strickler, 1984;Finch, 1986;Prokopy, 1986).…”

Section: Introductionmentioning

confidence: 99%

Sensory interaction during trap‐finding by female onion flies: implications for ovipositional host‐plant finding

Judd

Borden

1991

Entomologia Exp Applicata

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Using various three‐dimensional traps alone and in combination with the onion volatile, dipropyldisulphide (Pr2S2), we found that visual behaviour of female onion flies, Delia antiqua (Meigen), varied with the ‘visual context’ (background composition and trap spacing) in which traps were presented and the females' reproductive state (mated vs. unmated). Against a background of real onions, females alighted more frequently on spherical than cylindrical traps, and white than green spheres, but females responded equally to white and green cylinders. In an onion field, baiting traps with Pr2S2 significantly increased female response to white over green traps, but had no influence on their response to trap shape. When traps were spaced 10 m apart and against a background of bare soil, females orienting to Pr2S2 baits alighted more frequently on vertical than horizontal traps, but shape and spectral reflectance were insignificant. However, when traps were spaced 0.25 m apart, females orienting to Pr2S2 baits alighted more frequently on cylinders than spheres. Mated females alighted more frequently on green than white cylinders, but unmated females responded to cylinders independent of spectral reflectance. When located 20 m downwind from Pr2S2 baits, mated females alighted on green cylinders significantly more often than unmated females. Response to traps mimicking onion plants suggests that ovipositional host‐finding in female onion flies is dominated by olfactory responses at long range (several metres) and by visual cues at short‐range (ca. 1 m). The view that host location by female onion flies is a hierarchical response pattern mediated by multiple sensory modalities and modified by resource level (habitat) and reproductive status, is discussed.

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Assessing Host-Plant Finding by Insects

Cited by 26 publications

References 86 publications

Insecticidal activity of the essential oil from fruits and seeds of Schinus terebinthifolia Raddi against African malaria vectors

Insecticidal activity of the essential oil from fruits and seeds of Schinus terebinthifolia Raddi against African malaria vectors

Bioassay Methods with Terrestrial Invertebrates

Sensory interaction during trap‐finding by female onion flies: implications for ovipositional host‐plant finding

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