Die Riechschwelle des Seidenspinners

Kaissling, Karl-Ernst; Priesner, E.

doi:10.1007/bf00593550

Cited by 228 publications

(80 citation statements)

References 17 publications

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“…As for the case of dyes binding to diverse organelles in super-resolution fluorescence microscopy [23,30], remotely detected insects can be used for indirect sensing of single molecules through their superior olfactory capabilities [31]. Thus, entomological lidar can be used as a tool even for researchers outside entomology searching for lidar application for ultra-low concentration of trace gases.This approach has been explored since almost a decade for land-mine detection.…”

Section: Discussionmentioning

confidence: 99%

SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

Brydegaard¹,

Gebru²,

Svanberg³

2014

PIER

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Abstract-Assessment of biodiversity of pollinators on the landscape scale or estimation of fluxes of disease-transmitting biting midges constitutes a major technical challenge today. We have developed a laser-radar system for field entomology based on the so called Scheimpflug principle and a continuouswave laser. The sample-rate of this method is unconstrained by the round-trip time of the light, and the method allows assessment of the fast oscillatory insect wing-beats and harmonics over kilometers range, e.g., for species identification and relating abundances to the topography. Whereas range resolution in conventional lidars is limited by the pulse duration, systems of the Scheimpflug type are limited by the diffraction of the telescopes. However, in the case of sparse occurrence of the atmospheric insects, where the optical cross-section oscillates, estimation of the range and spacing between individuals with a precision beyond the diffraction limit is now demonstrated. This enables studies of insect interaction processes in-situ. REMOTE OPTICAL IN-SITU INSECT MONITORINGAlthough tiny in size, the massive number of insects makes them play a key role in most eco-systems around the globe. While the Western world experiences significant economic losses in agriculture due to lack of biodiversity and the colony collapse disorder of pollinators [1], disease vectors and pests are feared and, to a great extent, blamed for stagnating the development in tropical parts of the world.Whereas birds can be ring marked or tracked via GPS or sun loggers, only the very largest and least abundant insects can be equipped with electronic tags [2,3]. While research in the area of radar entomology has been conducted over several decades and numerous interesting applications have been described [4], laser radar (light detection and ranging; lidar) systems in the optical regime have the potential of achieving a far better sensitivity and address and classify even the tiniest insects, simply because most insects are much smaller than the wavelengths of microwaves used in radars but larger than the wavelengths of light. Further, optical off-the-shelf components allow spectral-and polarimetric target classification, providing molecular as well as microstructure information [5,6]. Along these lines our group has previously demonstrated lidar remote detection of insects labeled with fluorescent powders, e.g., for assessing dispersal rates on a landscape scale [7,8].Today a major limitation in ecological entomology is that insect abundance assessment is based on sweep nets, light-, pheromone-or CO 2 -traps. Placing and emptying the traps are tedious operations and constitute a major effort, and the results are known to be biased with respect to the species, sexes and age groups caught. Although trapping allows precise studies with microscopes, mass spectrometry

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Section: Discussionmentioning

confidence: 99%

SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

Brydegaard¹,

Gebru²,

Svanberg³

2014

PIER

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“…The non-linear transformation emphasises that synapses in the olfactory network are optimised for high sensitivity near odour detection thresholds (Kazama and Wilson 2008). This is supported by behavioural experiments on insects other than D. melanogaster (Angioy et al 2003, Kaissling 1971, Kaissling and Priesner 1970.…”

Section: Additional Features Of the Olfactory Signals Relayed To Highmentioning

confidence: 91%

“…sensilla generally respond to a threshold dose sex-pheromones between 10 -7 g and 10 -12 g (Angioy et al 2003, Boeckh and Selsam 1984, Kaissling 1971, Kaissling and Priesner 1970 and to kairomones at amounts often 10 to 100 fold higher , Hill et al 2009, Jönsson and Anderson 1999, Larsson et al 2001. It is important to mention that these experimentally derived threshold values are all relative, and should not be taken as absolute values; since volatility differs greatly amongst various compounds, and experimental factors such as the speed of airflow and the Hill et al 2009 andGhaninia et al 2008).…”

Section: Sensitivitymentioning

confidence: 99%

Olfaction in vector-host interactions

Takken¹,

Knols²

2010

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“…The insect sex pheromones are generally small, hydrophobic chemical substances secreted to attract the opposite sex. A single pheromone molecule is enough to trigger olfactory neurons in the insect antennae [2]. Hence, the molecular machinery to detect the sex pheromone and to transfer the signal is a very effective chemical communication system.…”

Section: Introductionmentioning

confidence: 99%

Flexibility of a loop in a pheromone binding protein from <I>Bombyx mori</I>: a molecular dynamics simulation

Nemoto¹,

Uebayashi²,

Komeiji

2002

CBIJ

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The three dimensional structure of a pheromone binding protein from Bombyx mori complexed with its substrate was determined recently [Sandler et al., Chem. Biol. 7, 143-151 (2000)]. The structure suggested that a loop formed by amino acid residues 60-69 could serve as a flexible lid into the pheromone binding pocket. To examine the above hypothesis, a molecular dynamics simulation was performed for a substrate free form of the protein starting from the crystal structure. In the simulation loop 60-69 took a conformation different from that in the substrate bound form. Also, the loop was the most flexible region of the protein. Thus, the simulation supports the hypothesis that the loop is a flexible lid.

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Die Riechschwelle des Seidenspinners

Cited by 228 publications

References 17 publications

SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

Olfaction in vector-host interactions

Flexibility of a loop in a pheromone binding protein from <I>Bombyx mori</I>: a molecular dynamics simulation

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