@article {53110, title = {Marking by elytral clip changes stridulatory characteristics and reduces reproduction in the American burying beetle, Nicrophorus americanus}, journal = {Journal of Insect Conservation}, volume = {19}, year = {2015}, month = {Jan-02-2015}, pages = {155 - 162}, abstract = {

Some insects produce and use sound during multiple behaviors including many aspects of reproduction. Variation in call structure depends on the evolved mor- phological structures used to produce the sound and encode function. Beetles in the genus Nicrophorus produce strid- ulation by rubbing plectra, located on the ventral side of the elytra, against a pars stridens, located on the caudal end on the fourth and fifth abdominal segment in females and males, respectively. During field surveys for the endan- gered N. americanus, survey crews have historically used a small V-shaped notch cut in the caudal end of the right elytron to serves as a permanent marking method. No study, however, has examined the effect of this marking technique on the characters of stridulation or consequences
for reproductive behavior and fitness. Here we show that one temporal and one spectral character of sound change significantly following elytron clipping, and that repro- ductive success is significantly decreased in all breedings in which a parent beetle is elytron-clipped. We recommend replacement of this marking technique with non-invasive methods to ensure conservation of this endangered species.

}, keywords = {bioacoustics, Elytron clipping, Marking technique, Nicrophorus americanus, stridulation}, issn = {1366-638X}, doi = {10.1007/s10841-015-9755-8}, url = {http://link.springer.com/10.1007/s10841-015-9755-8}, author = {Hall, Carrie L. and Howard, Daniel R. and Smith, Rosemary J. and Mason, Andrew C.} } @article {47337, title = {Acoustic monitoring of Orthoptera and its potential for conservation}, journal = {Journal of Insect Conservation}, volume = {2}, year = {1998}, month = {Jan-01-1998}, pages = {217 - 223}, abstract = {

Songs of Orthoptera can be used for inventorying and monitoring of individual species and communities. Acoustic parameters such as carrier frequency and pulse rates allow the definition of recognizable taxonomic units (RTUs) which help to overcome the taxonomic impediment due to our scanty knowledge, particularly of tropical faunas. Bioacoustic diversity is a first estimate for species richness and provides baseline data which can be a prerequisite for conservation. Additional ecological and behavioural information such as habitat preference and singing schedules can be inferred. Many Orthoptera are sensitive indicator species for habitat quality in temperate and tropical ecosystems. Examples are given for evaluation of habitat quality and deterioration by acoustic detection of Orthoptera.

}, keywords = {bioacoustics, biodiversity, conservation, monitoring, Orthoptera, tropical forests}, issn = {1366638X}, doi = {10.1023/A:1009695813606}, url = {http://link.springer.com/10.1023/A:1009695813606}, author = {Riede, Klaus} } @article {16648, title = {Baseline data for automated acoustic monitoring of Orthoptera in a Mediterranean landscape, the Hymettos, Greece}, journal = {Journal of Insect Conservation}, volume = {18}, year = {2014}, month = {Jan-10-2014}, pages = {909 - 925}, abstract = {

Acoustic emissions of animals serve communi- cative purposes and most often contain species-specific and individual information exploitable to listeners, rendering bioacoustics a valuable tool for biodiversity monitoring. Recording bioacoustic signals allows reproducible species identification. There is a great need for increased use and further development of automated animal sound recording and identification to improve monitoring efficiency and accuracy for the benefit of conservation. Greece, with its high number of endemic species, represents a hotspot for European Biodiversity, including Orthopteran insects. Songs of many Orthoptera might be employed for the inventorying and monitoring of individual species and communities. We assessed the regional spatio-temporal composition of Orthoptera species at the Hymettos near Athens, which is a Natura 2000 site under constant threat due to the surrounding megacity. Within the framework of the EU Life Plus funded AmiBio project, we documented the Orthopteran species\’ habitat characteristics, their co-occurrence and phenology. We found, in total, 20 species with seven to ten Orthoptera at locations characterised by diverse vegetation patterns of perennial herbs and bushes. For the purposes of implemen- tation of an automated remote monitoring scheme, we identified sampling sites with high Orthopteran diversity, allowing the monitoring of all singing Orthoptera within single localities. By analysing sound depositories and adding recordings from new sample individuals, we established a song library as prerequisites for future automatic song detection. Based on our results, acoustic recording units have been placed at remote sites at the Hymettos. We discuss recommendations for further studies to fully employ the potential of automated acoustic monitoring of Orthoptera. A reliable assessment of singing Orthoptera needs recording units covering ultrasound. Due to high attenuation and absorbance by the vegetation, particularly of the high fre- quencies characterising Orthopteran songs, positioning of microphones at sites is critical: the microphone sensor net- work has to be an order of magnitude denser than for mon- itoring birds,

}, keywords = {Autonomous monitoring, Biodiversity monitoring, Orthoptera, sound, wildlife recording}, issn = {1366-638X}, doi = {10.1007/s10841-014-9700-2}, url = {http://link.springer.com/10.1007/s10841-014-9700-2}, author = {Gerlind U.C. Lehmann and Frommolt, Karl-Heinz and Arne W. Lehmann and Riede, Klaus} }