Mating disruption by a synthetic sex pheromone in the white grub beetle Dasylepida ishigakiensis (Coleoptera: Scarabaeidae) in the laboratory and sugarcane fields

2011 ◽  
Vol 102 (2) ◽  
pp. 157-164 ◽  
Author(s):  
H. Yasui ◽  
S. Wakamura ◽  
N. Fujiwara-Tsujii ◽  
N. Arakaki ◽  
A. Nagayama ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Mating Disruption ◽  
Sexual Communication ◽  
Substantial Reduction ◽  
Flight Tunnel ◽  
White Grub ◽  
Dasylepida Ishigakiensis ◽  
Short Period ◽  
Synthetic Sex Pheromone ◽  
Almost All

AbstractA serious sugarcane pest, Dasylepida ishigakiensis, remains in the soil during most of its life cycle except for a short period for mating. Mating disruption by an artificial release of the sex pheromone (R)-2-butanol (R2B), therefore, may be a feasible method to control this pest. We examined the effects of artificial release of R2B and its related compounds, (S)-2-butanol (S2B) and the racemic 2-butanol (rac-2B), on the mating success of this beetle both in the laboratory and in the field. In flight tunnel experiments, almost all males orientated towards a R2B-releasing source and 40% of them landed on the source. When the atmosphere was permeated with R2B, the frequency of males landing on the model was significantly reduced. Both rac-2B and S2B were less effective, but substantial reduction in landing success by males was achieved at higher rac-2B concentrations. R2B released from polyethylene dispensers in sugarcane plots greatly reduced not only the proportion of females mated with males but also the number of males caught by R2B-baited traps, indicating that male mate-searching behaviour was strongly affected by the released R2B. Similar inhibitory effects on male behaviour were also observed when tube- or rope-type dispensers released high rac-2B concentrations in the field. These results indicate that it would be highly possible to control D. ishigakiensis through the disruption of the sexual communication by releasing either synthetic R2B or rac-2B.

Mating disruption for control of the white grub beetle Dasylepida ishigakiensis (Coleoptera: Scarabaeidae) with synthetic sex pheromone in sugarcane fields

2013 ◽  
Vol 48 (4) ◽  
pp. 441-446 ◽  
Author(s):  
Norio Arakaki ◽  
Yasuhiro Hokama ◽  
Atsushi Nagayama ◽  
Hiroe Yasui ◽  
Nao Fujiwara-Tsujii ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Mating Disruption ◽  
White Grub ◽  
Dasylepida Ishigakiensis ◽  
Synthetic Sex Pheromone

Male white grub beetles prefer the pheromone composition of young females in the field

2016 ◽  
Vol 106 (5) ◽  
pp. 679-684 ◽  
Author(s):  
N. Fujiwara-Tsujii ◽  
H. Yasui ◽  
S. Wakamura ◽  
A. Nagayama ◽  
N. Arakaki
Keyword(s):  
Sex Pheromones ◽  
Flight Tunnel ◽  
White Grub ◽  
Young Males ◽  
Young Females ◽  
Dasylepida Ishigakiensis ◽  
Female Pheromone ◽  
Pheromone Composition ◽  
Older Males ◽  
Qualitative Changes

AbstractFemales of the white grub beetle, Dasylepida ishigakiensis, release both (R)- and (S)-2-butanol as sex pheromones, but the males are only attracted to (R)-2-butanol. In laboratory-reared females, the proportion of the (R)-isomer decreased significantly as their calling opportunities increased and as they aged. We examined whether such qualitative changes also occur in field populations. We collected virgin females from the field and then trapped and analysed the volatiles emitted during their first and second callings. The ratio of (R)- to (S)-2-butanol (R/S) was 78:22 at the first calling, but shifted to 39:61 at the second calling. While investigating the composition of the female pheromones, the question arose as to whether the male preferences change in response to the shift in female pheromone composition. To answer this question, we observed the behaviour of young and old males in response to various R/S ratios as lures in the laboratory and in the field. In the flight tunnel assay of laboratory-reared individuals, young males touched female models with a 9:1 R/S ratio lure less than those with pure (R)-2-butanol; however, older males touched the two groups with equivalent frequency. In the field trap test, older males were much more attracted to (R)-2-butanol-scented lures. When we tested using lures with the same amount of (R)-2-butanol but added different amounts of the (S)-isomer, we found that increased levels of (S)-2-butanol resulted in lower attractiveness to males. (S)-2-butanol was confirmed to have an inhibitive activity in the attractiveness of (R)-2-butanol.

scholarly journals Multiple Mating in the Citrophilous Mealybug Pseudococcus calceolariae: Implications for Mating Disruption

Insects ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 285 ◽  
Author(s):  
Renato Ricciardi ◽  
Andrea Lucchi ◽  
Giovanni Benelli ◽  
David Maxwell Suckling
Keyword(s):  
Sex Pheromone ◽  
Mating Disruption ◽  
Control Strategies ◽  
Flight Tunnel ◽  
Mate Location ◽  
Planococcus Citri ◽  
Mass Trapping ◽  
Pseudococcus Calceolariae ◽  
Rubber Septa ◽  
Extended Duration

The citrophilous mealybug Pseudococcus calceolariae (Maskell) (Hemiptera, Pseudococcidae) is a primary pest of various crops, including grapevines. The use of insecticides against this species is difficult in most cases because its life cycle includes an extended duration of eggs, juveniles, and adults under the bark and on the roots. Pheromone-based control strategies can present new eco-friendly opportunities to manage this species, as in the case of Planococcus ficus (Signoret) and Planococcus citri (Risso). With this aim it is critical to understand behavioral aspects that may influence pheromone-based control strategies. Herein, the capability of males to fertilize multiple females was investigated, trying to understand whether this behavior could negatively impact the efficacy of mass trapping, mating disruption, or the lure and kill technique. Results showed that a P. calceolariae male can successfully mate and fertilize up to 13 females. The copulation time in subsequent mating events and the time between copulations did not change over time but the number of matings per day significantly decreased. In a further experiment, we investigated the mate location strategy of P. calceolariae males, testing the attractiveness of different loadings of sex pheromone on males in a flight tunnel. Males constantly exposed to 16 rubber septa loaded with the sex pheromone showed a significant decrease in female detection at 1 and 30 μg loadings (0.18 and 0.74 visits per female for each visit per septum, respectively), whereas in the control about 9.2-fold more of the released males successfully detected the female in the center of the array of 16 septa without pheromone. Male location of females in the control (45%) was significantly higher than in the arrays with surrounding pheromone (5% and 20% at 1 and 30 μg loadings, respectively). Mating only occurred in the control arrays (45%). This study represents a useful first step to developing pheromone-based strategies for the control of citrophilous mealybugs.

scholarly journals Control of Synanthedon (Aegeria) myopaeformis by Mating Disruption Using Sex Pheromone Dispensers in Northern Greece

2017 ◽  
Vol 11 ◽  
pp. 35 ◽  
Author(s):  
D.S. Kyparissoudas ◽  
Α. Tsourgianni
Keyword(s):  
Sex Pheromone ◽  
Mating Disruption ◽  
Integrated Control ◽  
Insect Pest ◽  
Apple Orchards ◽  
Northern Greece ◽  
Polyethylene Tube ◽  
Synthetic Sex Pheromone ◽  
Clearwing Moth ◽  
Pheromone Dispensers

In 3 successive years (1990-1992) polyethylene tube dispensers, each containing 50.5 mg synthetic sex pheromone of the apple clearwing moth, Synanthedon (Aegeria) myopaeformis Borkh., were placed at a density of 680 per ha, once a year, in two adjacent commercial apple orchards each I ha in size. The degree of confusion reached almost 100% by releasing about 6 mg/ha/h, whereas the number of mated females decreased by 72.86%, compared with the untreated orchard. In 1993, after 3 years of experiments, a reduction of up to 91% of empty pupal skins per tree was attained. The encouraging results, especially when taking into account the relatively small size of the orchards, opens opportunities for the integrated control of this apple insect pest under the conditions of Northern Greece.

Mating Disruption for Control of Melanotus okinawensis (Coleoptera: Elateridae) with Synthetic Sex Pheromone

2008 ◽  
Vol 101 (5) ◽  
pp. 1568-1574 ◽  
Author(s):  
Norio Arakaki ◽  
Atsushi Nagayama ◽  
Aya Kobayashi ◽  
Yasuhiro Hokama ◽  
Yasutsune Sadoyama ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Mating Disruption ◽  
Synthetic Sex Pheromone

scholarly journals Initial studies of mating disruption of the tomato moth, Tuta absoluta (Lepidoptera: Gelechiidae) using synthetic sex pheromone

2000 ◽  
Vol 11 (6) ◽  
pp. 621-628 ◽  
Author(s):  
Miguel Michereff Filho ◽  
Evaldo F. Vilela ◽  
Gulab N. Jham ◽  
Athula Attygalle ◽  
Ales Svatos ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Mating Disruption ◽  
Tuta Absoluta ◽  
Synthetic Sex Pheromone
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