Calling behaviour and evaluation of sex pheromone glands extract of Neoleucinodes elegantalis Guenée (Lepidoptera: Crambidae) in wind tunnel

Eiras, Alvaro E.

doi:10.1590/s0301-80592000000300007

Cited by 12 publications

(3 citation statements)

References 7 publications

(4 reference statements)

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“…This result suggests that the best time to extract poplar moth sex pheromone glands should be between the seventh and tenth hours of scotophase. Similar data have been presented for C. consueta (Rojas and Cibrián-Tovar 1994) and Neuleucinodes elegantalis (Lepidoptera: Crambidae) (Eiras 2000). The majority of Lepidoptera mate during the scotophase (Roelofs and Cardé 1987) and the fact that several species emit pheromone at speciWc time intervals has been regarded as an important mechanism to ensure reproductive isolation (Cardé and Roelofs 1973).…”

Section: Discussionsupporting

confidence: 65%

Calling behaviour and male response towards sex pheromone of poplar moth Condylorrhiza vestigialis (Lepidoptera: Crambidae)

et al. 2008

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The calling behaviour of virgin females Condylorrhiza vestigialis Guenée, 1854 (Lepidoptera: Crambidae) and the female pheromone gland extract activity were studied under laboratory conditions. Most of the females started calling from their Wrst scotophase period after emergence. Maximum calling occurred between the seventh and tenth hours of the scotophase period. The length of the calling increased with age until the fourth scotophase, but the onset of calling time did not diVer with age. The number of calling bouts increased signiWcantly with age, but the mean duration of each calling bout (20.8 min) did not vary with age. Extracts of pheromone glands evaluated in a Y-tube olfactometer attracted signiWcantly more males than control, 70 and 30%, respectively. Gas chromatographic-electroantennogram detection (GC-EAD) analysis of these extracts indicated the presence of a single EAD-active peak, the putative sex pheromone of the species. This pheromone compound may be suitable for monitoring populations densities of C. vestigialis, and for detection of the onset of the seasonal Xight period. An eYcient pheromone is of importance also with respect to current attempts to develop new control methods for this important pest of Populus spp. in Brazil.

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Section: Discussionsupporting

confidence: 65%

Calling behaviour and male response towards sex pheromone of poplar moth Condylorrhiza vestigialis (Lepidoptera: Crambidae)

et al. 2008

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“…Males ( n = 62) and females ( n = 73), aged 24–48 h, were released into experimental cages between the fifth and tenth during scotophase, which is the optimal time for mating (Eiras, ). The cages were checked every 30 min for mating events because couples remain coupled for at least 40 min (Eiras, ) and, thus, were unlikely to pass unnoticed. Each copulating couple was kept isolated in cylindrical transparent plastic vials (diameter 2.5 cm, height 3.5 cm) until separation.…”

Section: Methodsmentioning

confidence: 99%

Virgin and recently mated males are equally able to achieve new matings in Neoleucinodes elegantalis

Pontes¹,

Cunha²,

Araújo³

et al. 2013

Physiol. Entomol.

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Lepidopteran male mating success is recognized to be directly related to physical and behavioural traits such as ability, vigour, activity and persistence in courtship. In the tomato fruit borer Neoleucinodes elegantalis Guenée, the mating system is known to be monogamic and therefore males' sexual investment is apparently low. The hypothesis that recently mated males have a remating probability equal to that of virgin males is tested. The impact of body size in remating success and the cost of remating are also analyzed. Mated males show as much propensity to remate as naïve ones. Copula duration and the time taken to copulate are similar in mated and virgin males. However, spermatophore size is not related to male size. The results suggest the ability of N. elegantalis males to remate within 24 h between mating events and their propensity to remate are not affected by copula investment.

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“…Adults emerge from the pupal stage within 1 to 7 h after the beginning of scotophase, mate within 48 to 72 h of eclosion (Eiras, 2000), and shortly thereafter begin depositing eggs. The female moth lays up to 160 eggs (Marcano, 1991) usually in batches of 2-3 eggs on fruits that are 1-3 cm in diameter (Toledo, 1948, Salinas et al, 1993Blackmer et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Eclosion time and larval behavior of the tomato fruit borer, Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae)

Eiras¹,

Blackmer

2003

Sci. agric. (Piracicaba, Braz.)

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In several regions of Brazil, Neoleucinodes elegantalis (Guenée) is one of the most serious tomato pests. The moth lays eggs on the calyx or developing fruit, and shortly after eclosion larvae penetrate into the fruit, where they remain until pupation. Once larvae have entered the fruits, insecticides and biological control agents are relatively ineffective. Because N. elegantalis is most susceptible to conventional treatments when the larvae are outside the host tissues (or fruit), it would be advantageous to know the time required for egg development and the length of time that the larvae spend on the surface of the fruit. To answer these questions detailed behavioral studies were untaken. Eggs were collected from the field and maintained in an environmental chamber at 20°C, 75 ± 5% R.H., and a 12L:12D photoperiod. The time of egg eclosion was recorded with a video camera, whereas larval behavior and time required to enter the fruit were determined by direct observations. The majority of eggs (93%) hatched within the first two hours after the beginning of photophase. Larvae spent 51.1 ± 31.1 (mean ± SEM) min on the surface of the fruits. Once a suitable site was identified, larvae required an additional 23.8 ± 19.4 min to completely enter the fruit. Eighty-six percent of the larvae were successful in penetrating the fruit. Of the larvae that bored into the fruit, 42% selected the upper portion, 18% selected the middle portion, and 40% selected the lower portion. Key words: Insecta, tomato, tomato fruit borer, larval behavior TEMPO DE ECLOSÃO E COMPORTAMENTO DE LARVAS DA BROCA-PEQUENA-DO-TOMATEIRO, Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae)RESUMO: Neoleucinodes elegantalis (Guenée) é uma das pragas mais sérias do tomate em várias regiões do Brasil. A fêmea deposita seus ovos no cálice ou nos frutos em desenvolvimento, e logo após a eclosão a larva penetra no fruto, onde permanece até a pupação. Depois que a larva entra no fruto, inseticidas e agentes de controle biológico são relativamente ineficazes. Como N. elegantalis é mais suscetível a métodos de controle quando a larva encontra-se no exterior do hospedeiro, seria vantajoso conhecer o período de tempo necessário para o desenvolvimento dos ovos e quanto tempo a larva passa na superfície do fruto. Para responder estas questões, detalhados estudos comportamentais foram conduzidos. Ovos foram coletados no campo e mantidos em câmara ambiental a 20°C, 75 ± 5% U.R., e fotoperíodo de 12L:12E. O horário de eclosão foi registrado com uma câmera de vídeo, enquanto que o comportamento da larva e o tempo requerido para que ela penetre no fruto foram determinados com observações visuais. A maioria dos ovos (93%) eclodiu dentro das primeiras duas horas da fotofase. Larvas passaram 51,1 ± 31,1 (média ± erro padrão) min na superfície do fruto. Uma vez que sítios adequados eram identificados, as larvas necessitaram de 23,8 ± 19,4 min adicionais para entrar completamente nos frutos. Oitenta e seis por cento das larvas penetram com sucesso no fruto....

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Calling behaviour and evaluation of sex pheromone glands extract of Neoleucinodes elegantalis Guenée (Lepidoptera: Crambidae) in wind tunnel

Cited by 12 publications

References 7 publications

Calling behaviour and male response towards sex pheromone of poplar moth Condylorrhiza vestigialis (Lepidoptera: Crambidae)

Calling behaviour and male response towards sex pheromone of poplar moth Condylorrhiza vestigialis (Lepidoptera: Crambidae)

Virgin and recently mated males are equally able to achieve new matings in Neoleucinodes elegantalis

Eclosion time and larval behavior of the tomato fruit borer, Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae)

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