@article {58314, title = {Mate Choice Behavior of Female Field Crickets Is Not Affected by Exposure to Heterospecific Calling Songs}, journal = {Environmental Entomology}, year = {2020}, month = {Sep-04-2020}, abstract = {

Many animals produce acoustic signals to mark territories and attract mates. When different species produce acoustic signals simultaneously, the signals create a noisy environment, with potential acoustic interference between species. Theoretical studies suggest that such reproductive interference may have strong effects on species interaction. For example, the inferior resource competitor can survive if its disadvantage is counterbalanced by superiority in reproductive interference. Two field cricket species, Teleogryllus occipitalis (Audinet-Serville) (Orthoptera: Gryllidae) and Loxoblemmus equestris Saussure (Orthoptera: Gryllidae), cooccur in the same habitat. A previous study has shown that L. equestris is an inferior species to T. occipitalis in terms of resource competition. Therefore, we predicted that mate location and choice behavior of female T. occipitalis would be negatively affected by the acoustic signals of L. equestris and tested this with a series of playback experiments. The mate choice behavior of female T. occipitalis was not significantly affected by the calling song of L. equestris. Our results suggest that the acoustic interference does not explain the cooccurrence of the two species in the same habitat.

}, keywords = {acoustic communication, calling song, interspecific competition, Orthoptera, species interaction}, issn = {0046-225X}, doi = {10.1093/ee/nvaa034}, url = {https://academic.oup.com/ee/advance-article/doi/10.1093/ee/nvaa034/5818179}, author = {Kuriwada, Takashi and Kawasaki, Rintaro and Kuwano, Akifumi and Reddy, Gadi V P}, editor = {Ginzel, Matthew} } @article {47808, title = {The Complete Mitochondrial Genome and Song Evolution of the Monotypic Genus U. Tarbinsky, 1932 (Orthoptera: Tettigoniidae)}, journal = {Environmental Entomology}, volume = {45}, year = {2016}, month = {Oct-19-20162019}, pages = {737 - 746}, abstract = {

The insect Uvarovites inflatus Uvarov is highly appreciated in China. It is known for its distinctive songs and horn-like forewings and is raised commercially for insect lovers. U. inflatus was previously categorized as part of the mono- typic genus Uvarovites; however, there was little molecular evidence to support this taxonomic classification. This study obtained and investigated the mitogenome of U. inflatus, and its songs were characterized and compared with other Ensifera species whose mitogenomes are available. By performing the mitochondrial analysis, we were able to assess the phylogenetic relationships between these species and discuss the evolution of Ensifera calling songs. The mitogenome of U. inflatus is 15,956bp in length and contains 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and 1 control region. The organization and orientation of the U. inflatus mitogenome are similar to those of other Tettigonioidea species. Phylogenetic analysis based on 13 protein-coding genes showed that the superfamily Tettigonioidea is monophyletic, as are the other six tested subfamilies from Tettigonioidea. Our results also indicated that Grylloidea is monophyletic. A Bayesian relaxed clock analysis showed that the differentiation of U. inflatus and Gampsocleis gratiosa Brunner occurred in the middle Miocene, suggesting that their speciation occurred over a long evolutionary period. The results provide significant support for the establishment of the monotypic genus Uvarovites. Calling song analysis showed that at least two discrete steps of independent evolution occurred during the change from pure tone to broadband noise, and that the ancestor of existing Ensifera was more likely to have emitted pure-tone songs than broadband signals. Together, the mitogenome, molecular clock, and acoustic data allowed us to clarify the taxonomic state of U. inflatus and propose a timeline for the evolution of Ensifera songs.

}, keywords = {adaptive evolution, insect songs, mitogenome, Orthoptera}, issn = {0046-225X}, doi = {10.1093/ee/nvw031}, url = {https://academic.oup.com/ee/article-lookup/doi/10.1093/ee/nvw031}, author = {Yinliang Wang and Zhao, Hanbo and Zhang, Xue and Bing-Zhong Ren} }