The Experts below are selected from a list of 12411 Experts worldwide ranked by ideXlab platform
David Chesmore - One of the best experts on this subject based on the ideXlab platform.
-
Active sound production of scarab beetle larvae opens up new possibilities for species-specific Pest Monitoring in soils.
Scientific Reports, 2019Co-Authors: Carolyn-monika Görres, David ChesmoreAbstract:Root-feeding Scarabaeidae larvae can pose a serious threat to agricultural and forest ecosystems, but many details of larval ecology are still unknown. We developed an acoustic data analysis method based on active sound production by larvae (i.e. stridulations) for gaining new insights into larval ecology. In a laboratory study, third instar larvae of the Common Cockchafer (Melolontha melolontha) (n = 38) and the Forest Cockchafer (M. hippocastani) (n = 15) kept in soil-filled containers were acoustically monitored for 5 min each, resulting in the first known stridulation recordings for each species. Subsequent continuous Monitoring of three M. hippocastani larvae over several hours showed that a single larva could stridulate more than 70 times per hour, and stridulation rates increased drastically with increasing larval abundance. The new fractal dimension-based data analysis method automatically detected audio sections with stridulations and provided a semi-quantitative estimate of stridulation activity. It is the first data analysis method specifically targeting Scarabaeidae larvae stridulations in soils, enabling for the first time non-invasive species-specific Pest Monitoring.
-
Stridulations of Melolontha spp. larvae open up new possibilities for species-specific Pest Monitoring in soils
bioRxiv, 2019Co-Authors: Carolyn-monika Goerres, David ChesmoreAbstract:Root-feeding Scarabaeidae larvae can pose a serious threat to agricultural and forest ecosystems, but many details of larval ecology are still unknown. We developed an acoustic data analysis method for gaining new insights into larval ecology. In a laboratory study, third instar larvae of Melolontha melolontha (n=38) and M. hippocastani (n=15) kept in soil-filled containers were acoustically monitored for 5 min each, resulting in the first known stridulation recordings for each species. Subsequent continuous Monitoring of three M. hippocastani larvae over several hours showed that a single larva could stridulate more than 70 times per hour, and stridulation rates increased drastically with increasing larval abundance. The new fractal dimension-based data analysis method automatically detected audio sections with stridulations and provided a semi-quantitative estimate of stridulation activity. It is the first data analysis method specifically targeting Scarabaeidae larvae stridulations in soils, enabling for the first time non-invasive species-specific Pest Monitoring.
Jerrold Meinwald - One of the best experts on this subject based on the ideXlab platform.
-
evaluation of the synthetic major component of the sex pheromone of tuta absoluta meyrick lepidoptera gelechiidae
Journal of Chemical Ecology, 2001Co-Authors: Fernando A A Ferrara, Evaldo F Vilela, Gulab N Jham, Alvaro E Eiras, Marcelo Coutinho Picanco, Athula B Attygalle, Ales Svatos, R T S Frighetto, Jerrold MeinwaldAbstract:In wind-tunnel bioassays, dispensers loaded with 1 μg of the synthetic major component (3E,8Z,11Z)-3,8,11-tetradecatrienyl acetate (TDTA) of the sex pheromone emitted by Tuta absoluta (Meyrick) females were found to be highly attractive to conspecific males. Field experiments were conducted to evaluate the efficacy of five trap designs. The best trap, baited with 100 μg of the synthetic sex pheromone caught on average 1200 males per trap per night, while those baited with virgin females caught only 201 males. The male response to this pheromone is restricted to the same early-morning time window during which females exhibit calling behavior. The high biological activity of the synthetic pheromone suggests that it could be useful for Pest Monitoring and in mating disruption.
Carolyn-monika Görres - One of the best experts on this subject based on the ideXlab platform.
-
Active sound production of scarab beetle larvae opens up new possibilities for species-specific Pest Monitoring in soils.
Scientific Reports, 2019Co-Authors: Carolyn-monika Görres, David ChesmoreAbstract:Root-feeding Scarabaeidae larvae can pose a serious threat to agricultural and forest ecosystems, but many details of larval ecology are still unknown. We developed an acoustic data analysis method based on active sound production by larvae (i.e. stridulations) for gaining new insights into larval ecology. In a laboratory study, third instar larvae of the Common Cockchafer (Melolontha melolontha) (n = 38) and the Forest Cockchafer (M. hippocastani) (n = 15) kept in soil-filled containers were acoustically monitored for 5 min each, resulting in the first known stridulation recordings for each species. Subsequent continuous Monitoring of three M. hippocastani larvae over several hours showed that a single larva could stridulate more than 70 times per hour, and stridulation rates increased drastically with increasing larval abundance. The new fractal dimension-based data analysis method automatically detected audio sections with stridulations and provided a semi-quantitative estimate of stridulation activity. It is the first data analysis method specifically targeting Scarabaeidae larvae stridulations in soils, enabling for the first time non-invasive species-specific Pest Monitoring.
Fernando A A Ferrara - One of the best experts on this subject based on the ideXlab platform.
-
evaluation of the synthetic major component of the sex pheromone of tuta absoluta meyrick lepidoptera gelechiidae
Journal of Chemical Ecology, 2001Co-Authors: Fernando A A Ferrara, Evaldo F Vilela, Gulab N Jham, Alvaro E Eiras, Marcelo Coutinho Picanco, Athula B Attygalle, Ales Svatos, R T S Frighetto, Jerrold MeinwaldAbstract:In wind-tunnel bioassays, dispensers loaded with 1 μg of the synthetic major component (3E,8Z,11Z)-3,8,11-tetradecatrienyl acetate (TDTA) of the sex pheromone emitted by Tuta absoluta (Meyrick) females were found to be highly attractive to conspecific males. Field experiments were conducted to evaluate the efficacy of five trap designs. The best trap, baited with 100 μg of the synthetic sex pheromone caught on average 1200 males per trap per night, while those baited with virgin females caught only 201 males. The male response to this pheromone is restricted to the same early-morning time window during which females exhibit calling behavior. The high biological activity of the synthetic pheromone suggests that it could be useful for Pest Monitoring and in mating disruption.
Srdjan Stankovic - One of the best experts on this subject based on the ideXlab platform.
-
compressive sensing based image processing in trapview Pest Monitoring system
International Convention on Information and Communication Technology Electronics and Microelectronics, 2016Co-Authors: Milan Maric, Irena Orovic, Srdjan StankovicAbstract:Missing information in image can be recovered by using the principles of lower sample rate methods, such as Compressive Sensing. This method can, at the same time, recover the missing information in the signal and do the compression of the original data. Lowering the sample rate is especially suitable for natural images in applications where minor visually loss of fidelity is acceptable. The goal is to achieve a substantial reduction in bit rate and image size. In this paper we analyze the performance and quality of Compressive Sensing approach applied on images captured by the TrapView automated camera station for Pest detection. The reconstruction at the decoder side, if only small number of image samples is available, is tested in the paper. This is done with the goal to test different approach in image capturing — acquisition of only part of digital data, and then the reconstruction of the uncaptured/missing part, in order to obtain the original signal. This leads to decreasing the bit rate and transferred data volume through the mobile network, from the station to the TrapView cloud centre. It is shown that CS can provide a good quality image reconstruction with significantly reduced number of samples. The theory is tested using real images, obtained by the TrapView camera.
-
MIPRO - Compressive sensing based image processing in trapview Pest Monitoring system
2016 39th International Convention on Information and Communication Technology Electronics and Microelectronics (MIPRO), 2016Co-Authors: Milan Maric, Irena Orovic, Srdjan StankovicAbstract:Missing information in image can be recovered by using the principles of lower sample rate methods, such as Compressive Sensing. This method can, at the same time, recover the missing information in the signal and do the compression of the original data. Lowering the sample rate is especially suitable for natural images in applications where minor visually loss of fidelity is acceptable. The goal is to achieve a substantial reduction in bit rate and image size. In this paper we analyze the performance and quality of Compressive Sensing approach applied on images captured by the TrapView automated camera station for Pest detection. The reconstruction at the decoder side, if only small number of image samples is available, is tested in the paper. This is done with the goal to test different approach in image capturing — acquisition of only part of digital data, and then the reconstruction of the uncaptured/missing part, in order to obtain the original signal. This leads to decreasing the bit rate and transferred data volume through the mobile network, from the station to the TrapView cloud centre. It is shown that CS can provide a good quality image reconstruction with significantly reduced number of samples. The theory is tested using real images, obtained by the TrapView camera.