Effects of male age and mating status on response to the female sex pheromone of<i>Copitarsia decolora</i>(Lepidoptera: Noctuidae)

Reyes, Humberto; Arzuffi, René; Robledo, Norma

doi:10.1653/024.098.0109

Cited by 7 publications

(5 citation statements)

References 30 publications

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“…The insects selected to evaluate the effect of pre-exposure were those that presented the maximum attraction response to the olfactory stimuli; virgin males for the sex pheromone gland extracts (Reyes et al 2015) and mated females for host volatile extracts (Reyes 2015), with both groups composed of 4-d-old insects. To obtain the 4-d-old mated females, 3-d-old male and female individuals were mated inside 20 × 20 × 20 cm cages.…”

Section: Treatmentsmentioning

confidence: 99%

Modification of Behavioral Response inCopitarsia decolora(Lepidoptera: Noctuidae) Due to Pre-Exposure to Sex Pheromone and Host Plant Volatiles

Robledo

Arzuffi

Reyes-Prado

2018

Florida Entomologist

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In this study we assessed the effect of pre-exposure to host sex pheromones and plant volatiles on the response of virgin males and mated females of Copitarsia decolora (Guenée) (Lepidoptera: Noctuidae), by using glandular extracts of virgin females and host volatile extracts in bioassays conducted in a wind tunnel. Four-day-old insects, either virgin males pre-exposed to glandular extracts of the sex pheromone or mated females pre-exposed to host volatiles, were evaluated 2, 24, and 48 h after pre-exposure. In both sexes, pre-exposure and a subsequent attraction response at 2 h resulted in an inhibitory effect on the olfactory response. Recovery in the olfactory response was observed at 24 and 48 h; however, it took males a shorter activation time when compared with control insects. A brief pre-exposure of insects provoked a short-term (2 h) inhibition of the response to the olfactory stimulus. Consequently, as an integral part of strategies for the management of this pest species, the study of the ecological implications of such inhibition should be considered.

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Section: Treatmentsmentioning

confidence: 99%

Modification of Behavioral Response inCopitarsia decolora(Lepidoptera: Noctuidae) Due to Pre-Exposure to Sex Pheromone and Host Plant Volatiles

Robledo

Arzuffi

Reyes-Prado

2018

Florida Entomologist

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“…By contrast, host plant volatiles elicit the highest antennal responses in mated females Cnaphalocrocis medinalis compared with virgin females (Sun et al ., ). Mated males of Copitarsia decolora show stronger EAG responses to female sex pheromone than virgin males (Reyes et al ., ). By contrast, mating does not affect antennal responses of some other insect species to pheromones and plant volatiles (Gadenne et al ., ; De Cristofaro et al ., ; Yang et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Physiological state influences the antennal response of Anastrepha obliqua to male and host volatiles

et al. 2016

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The sexual and host-related behaviours of the fruit fly Anastrepha obliqua Macquart (Diptera: Tephritidae) are mediated by volatile compounds. However, whether the physiological state of this species affects its antennal and behavioural responses to semiochemicals is unknown. The effects of age, mating status, diet and the topical application of methoprene, a Juvenile hormone analogue (JHA), on the antennal sensitivity of this tephritid fruit fly species to selected male [(Z)-3-nonenol] and host fruit volatiles (ethyl benzoate, ethyl hexanoate, ethyl butyrate and trans-β-ocimene) are investigated using electroantennography (EAG). Overall, (Z)-3-nonenol and ethyl benzoate elicit the highest EAG responses in both sexes. Flies of both sexes aged 1, 5 and 10 days old show higher EAG responses to the tested compounds compared with flies aged 20 days old. Virgin females and males show higher EAG responses to volatile compounds than mated flies. Females and males fed with sugar plus protein show higher antennal responses to volatiles compared with flies fed sugar or protein alone. Flies of both sexes treated with methoprene show higher antennal responses than flies treated with acetone (control). These results suggest that the peripheral olfactory system in A. obliqua is modulated by the physiological state of the flies.

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“…Thus, it is feasible to reduce the number of matings by pheromone trapping male moths. Male age and mating status also affect the olfactory behavioural response of males to the female sex pheromone (Domingue et al, 2006; Reyes et al, 2015). Newly mated Agrotis ipsilon males are not attracted to sex pheromone, and the sensitivity of their antennal lobe neurons is lower than in virgin males (Barrozo et al, 2010; Gadenne et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Effect of age, daily rhythm and mating on pheromone titres and trapping of Glyphodes pyloalis (Lepidoptera, Crambidae)

Guo

Yang²,

Zhuo³

et al. 2022

J Applied Entomology

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Glyphodes pyloalis (Lepidoptera, Crambidae) is an important pest of mulberry trees in China, and current methods for accurate population monitoring and control of this pest are lacking. The sex pheromone of G. pyloalis in China was re‐identified as E10, E12, Z14‐hexadecenyl acetate (E10E12Z14‐16:Ac) and tentatively E10, E12, E14‐hexadecenyl acetate (E10E12E14‐16:Ac). The emergence began 2 h before the dark period, and the peak emergence was 3 h into scotophase. Analysing the female moth's age from 1–9 days revealed that the titre of sex pheromone E10E12Z14‐16:Ac and E10E12E14‐16:Ac did not change statistically, and the ratio remained constant at 7.19 ± 1.12. The titre of pheromone had a significant circadian rhythm, increasing at 2 h after darkness, peaking at 6–8 h before decreasing, but it was still detected after 4 h into photophase. Mating of G. pyloalis occurred mainly at night, with the highest rate during 3 h into scotophase, which was earlier than the temporal pattern of pheromone titres. 18.1% of unfed moths mated immediately after eclosion during the scotophase. This was lower than what is seen in 1–3‐day‐old moths but similar to 4‐day‐old moth. Mating can occur on the same day after emergence, primarily within 1–4 days. Female moths can release pheromone again 48 h after mating, but the ratio of E10E12Z14‐16:Ac and E10E12E14‐16:Ac was reduced to 5.1 ± 0.73. The trapping of male moths in the field showed a significant circadian rhythm, but significant differences in pheromone trapping in Sichuan Gongxian, Zhejiang Chun'an and Haining, and Jiangsu Wujiang were observed. At the same location, the circadian rhythm of moth trapping showed differences between generations. The trapping of the overwintering generation occurred mostly in the early period of scotophase, while other generations were caught slightly later. Our results contribute to effective pheromone trapping for monitoring and mass trapping to better control G. pyloalis populations.

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Effects of male age and mating status on response to the female sex pheromone ofCopitarsia decolora(Lepidoptera: Noctuidae)

Cited by 7 publications

References 30 publications

Modification of Behavioral Response inCopitarsia decolora(Lepidoptera: Noctuidae) Due to Pre-Exposure to Sex Pheromone and Host Plant Volatiles

Modification of Behavioral Response inCopitarsia decolora(Lepidoptera: Noctuidae) Due to Pre-Exposure to Sex Pheromone and Host Plant Volatiles

Physiological state influences the antennal response of Anastrepha obliqua to male and host volatiles

Effect of age, daily rhythm and mating on pheromone titres and trapping of Glyphodes pyloalis (Lepidoptera, Crambidae)

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