Morphology, distribution, and ultrastructural differences of sensilla trichodea and basiconica on the antennae of the oriental fruit moth, Grapholitha molesta (Busck) (Lepidoptera : Tortricidae)

George, John A.; Nagy, Božidar

doi:10.1016/0020-7322(84)90023-0

Cited by 37 publications

(34 citation statements)

References 14 publications

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“…Males had a significantly greater number of sensila trichodea than females (P < 0.001). The increased number occurred mainly in the scale-covered regions of the antenna, where males had 2200 more sensilla trichodea (type A) than females as observed by George and Nagy 32 . This clearly shows that type-A sensilla trichodea is likely to be involved in pheromone perception.…”

Section: Discussionsupporting

confidence: 51%

Autodetection in <i>Helicoverpa armigera</i> (Hubner)

et al. 2016

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Autodetection is an olfactory behavioural process where the females of some species respond to their own pheromonal blends. Through electroantennogram studies it has been proved that the gravid females of Helicoverpa armigera (Hubner) respond to their pheromone blend consisting of Z-11-hexadecenal and Z-9-hexadecenal in the ratio 97 : 3. Male antennae respond more strongly than virgin female antennae. However, antennae of gravid females elicit strong response than unmated males. Also, males showed strong responses in cross-wind flying in wind tunnel experiments, when sex pheromone blends were used. Virgin females and gravid females showed poor response in wind-tunnel studies. The ovipositional experiment where gravid females were allowed to oviposit in the presence and absence of pheromone odours indicated that there was no difference in the number of eggs laid. Through morphological studies, it has been proved that the females also possess sensilla trichoidea, destined to perceive the pheromone blends, though lesser in number than the males. These results support the hypothesis that autodetection of sex pheromones exists in females of H. armigera and is thought to function as a mechanism to induce dispersal under high population densities.

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Section: Discussionsupporting

confidence: 51%

Autodetection in <i>Helicoverpa armigera</i> (Hubner)

et al. 2016

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“…Electroantennography has been used to explore questions mainly related to mating disruption (e.g., Stelinski et al, 2006;Molinari et al, 2010;Trimble and Marshall, 2010;Khuns et al, 2012;D'Errico et al, 2013;Faraone et al, 2013), and at the CNS level, the three-dimensional structure of the antennal lobe (AL), and the physiological response of AL neurons to pheromone and plant odours have been studied (Najar-Rodriguez et al, 2010;Varela et al, 2009Varela et al, , 2011b. In addition Nagy and George (1981) and George and Nagy (1984) described the neuroanatomy of sensilla and olfactory receptor neurons (ORNs) in males, analyzed the effect of temperature on the ability of olfactory receptor neurons to detect pheromone pulses. However, a detailed characterization of the physiological response of pheromone receptor neuron types in G. molesta is lacking.…”

Section: Introductionmentioning

confidence: 98%

Response profile of pheromone receptor neurons in male Grapholita molesta (Lepidoptera: Tortricidae)

Ammagarahalli

Gemeno

2014

Journal of Insect Physiology

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“…The structural and chemical specialization of the cuticle in relation to its physiological properties is well acknowledged in the existing literature (Dey et al, 1995a,b). Further, specialized sensory structures of the cuticle known as sensilla are reported to occur in different body parts of insects and are known to perform a variety of functions (Alm and Hall, 1986;Bland, 1983;Crouau and Crouau-Roy, 1991;George and Nagy, 1984). Thus, it appears that the affect of a foreign substance on an insect should be sought first in its cuticular components including the sensilla.…”

Section: Introductionmentioning

confidence: 96%

Effect of Eupatorium adenophorum Spreng leaf extracts on the mustard aphid, Lipaphis erysimi Kalt: A scanning electron microscope study

Dey

Sinha

Kalita

2005

Microscopy Res & Technique

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Scanning electron microscopic study revealed some remarkable adverse effects of Eupatorium adenophorum Spreng leaf extract on cuticular and antennal sensilla of the mustard aphid, Lipaphis erysimi Kalt. The study appears to be the first of its kind in providing evidence on toxic property of the plant on certain agricultural pests, although the indigenous tribes of the region know the insecticidal property of the plant for a long time. The study further provides indications regarding the neurotoxic nature of the leaf extract since it has caused abnormalities in the sensory structures. The presence of prominent swellings in some sensilla and shrinkage in others suggests that the leaf extract affects different systems through different mechanisms. The possible use of the plant as a potential biopesticide against certain insect pests is discussed.

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Morphology, distribution, and ultrastructural differences of sensilla trichodea and basiconica on the antennae of the oriental fruit moth, Grapholitha molesta (Busck) (Lepidoptera : Tortricidae)

Cited by 37 publications

References 14 publications

Autodetection in <i>Helicoverpa armigera</i> (Hubner)

Autodetection in <i>Helicoverpa armigera</i> (Hubner)

Response profile of pheromone receptor neurons in male Grapholita molesta (Lepidoptera: Tortricidae)

Effect of Eupatorium adenophorum Spreng leaf extracts on the mustard aphid, Lipaphis erysimi Kalt: A scanning electron microscope study

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