Effects of temperature on calling song parameters of White faced bush cricket, Decticus albifrons (Ensifera: Tettigoniidae)
Subject Areas : entomology and othea arthropodsSh. Jafari 1 , M. H. Kazemi 2 , M. Shojaei 3 , H. Lotfalizadeh 4 , M. Mofidi-Neyestanak 5
1 - Graduated student of Agricultural Entomology, Department of Plant Protection, Islamic Azad University, Science and Research Branch, Tehran, Iran
2 - Department of Plant Protection, Islamic Azad University, Tabriz Branch, Tabriz, Iran
3 - Department of Plant Protection, Islamic Azad University, Science and Research Branch, Tehran, Iran
4 - Department of Plant Pests and Diseases, Agricultural and Natural Resources Research Center of East Azarbaijan, Tabriz, Iran
5 - Insect Taxonomy Research Department & Hayk Mirzayans Insect Museum, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization, Tehran, Iran
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Abstract :
Most males of katydids stridulate in mating. Calling song has important role in reproductive successes. In the present work, the stridulatory organ of White faced bush cricket, Decticus albifrons (Fabricius, 1775) was described and an analysis for possible relationship of song parameters with temperature in range of 18-37°C was provided. The calling song is chirp and consists of short echemes. The file length was 3.74±0.32 mm and composed of 77-91 teeth that there is about 22.46 teeth per mm. The inter-echeme interval, echemes and syllables duration showed inverse relationship with temperature in 18-30°C, whereas the dominant frequency, rate of echemes and syllables increase within this range of temperature. The entire curves were reversed after 30°C; consequently, this point was determined as the optimal temperature for calling song of D. albifrons. Among song parameters of White faced bush cricket, echemes rates, dominant frequency and inter-echeme interval have significant differences in different temperature.
