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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Прямокрылые насекомые рода Erianthus Stal, 1875 (Orthoptera, Eumastacoidea, Erianthinae) в условиях инсектария и их виброкоммуникациястатья
- Автор: Бенедиктов А.А.
- Сборник: “Беспозвоночные животные в коллекциях зоопарков”. Материалы Третьего Международного семинара, г. Москва, 22-27 октября 2007 г
- Глава в коллективной монографии
- Год издания: 2008
- Место издания: Московский зоопарк Москва
- Первая страница: 27
- Последняя страница: 32
- Аннотация: EUMASTACID GRASSHOPPERS FROM GENUS ERIANTHUS STÅL, 1875 (ORTHOPTERA, EUMASTACOIDEA, ERIANTHINAE) IN INSECTARIUM AND THEIR VIBRATIONAL COMMUNICATION / Alexander Benediktov / There are 17 known species of eumastacid grasshoppers of genus Erianthus Stål, 1875, all are from South-East Asia. All of them are described over morphological attributes. These highly colored relatives of Acridoidea lack аre lacking of acoustic communication. As well as other Eumastacoidea, they don’t have tympanum, and so have been considered as “deaf-mute” insects until now. We managed not only to get brood from fertilized female of one of the species and breed it to imago state, but also to record a vibrational signals, thereby prove a presence of vibrational communication in this superfamily. We are very grateful to V.A. Gromenko, who brought us a female of Erianthus versicolor Brunner, at the end of the February, 2007. He caught it on 22nd of February in Ko Kut island (Southeastern Thailand). Female was fertilized, she laid out an eggs in 2weeks to the soil and then died. The soil was moisturized irregularly and often stayed half-dried all of winter and spring time. The day temperature was +28º-30°C, at night +21º-24°C. 8 larva’s were found in the first week of May 2007. On the recommendation of A. Mikhailenko (Botanic Garden of MSU) they were fed with leaves of bird cherry (Padus sp.). The conditions of keeping larva’s were following: terrarium proportions — 39*19*28 cm; temperature — day +32º-33°C, night +24º-26°C; 8-houres/day of illumination by two luminescent 6W lamps (260/280 lm) and one 60W external incandescent lamp; one day a week moisturizing of soil. With these conditions we succeeded to raise three imago by August: two females and one male to imago state. The sex was identifiable on last larval state (male have smaller size). The dark spotted coloring of male appeared on last larval state, females remained blond. Male had become imago first, then, after 1,5 week came one female, and after another week – the other. While females were just larva, imago male remained inactive. He just sat on leaves. But he changed his behaviour as the first female became imago. Male started to vibrate periodically by his abdomen with club-shaped nub containing abdominal terminalia (Fig. 1). Slow vibrations of abdomen with high amplitude at the beginning (V – vibration) were smoothly changing to a rapid tremor with low amplitude at the end (T – tremulation). Such tremulation with no doubt was transported via insect legs to the plant it was sitting on. We recorded an original vibrosignals (Fig. 2) with a piezoelectrical vibrodetector attached to the plant. Vibrosignals of calling male (in +26º-28°C) contained series of ripples (Fig. 2. 1, 5) with frequency to 1000 Hz and duration of 4-6 seconds. Their main frequency raised from 50-70 in the middle of series to 200-250 Hz in the end. There were several harmonics on a frequency spectrum, first of which (till 400-450 Hz) was expressed the best (Fig. 2. 9). Male was able to emit both single series (in the beginning) and phrases containing of 4-7 and more series (after some time); single series and phrases followed unstable pauses (down to 20 seconds). The intervals between individual series in a phrase were from 200-300 ms to 1-3 s and more. During longstanding “singing” male produced well-distinguished pulses (P) up to 3 in many series, the emission of this pulses was caused by shudder of hind legs. Amplitude-time pattern of series changed during “singing”, primarily owing to increased length of slow vibration (V), that furthermore became more intensive (Fig. 2. 3, 7). If male was accompanied by female, then volume of his vibrosignals became lower, single series of pulses followed one by one, initial pulse (P) became much more intensive in relation to remaining series and abdomen high frequency vibrations (V) became more protracted (Fig. 2. 2, 6). This behavior could last till hour and most probably was associated with courtship. We suggest that female answer to male expressed in hard strikes of abdomen to the substrate was her refusal to copulation as far as she was just molted to imago. After that she crept away from male. The volume of the male signals increased again when female was manually removed on she was gone far from the male. In that case all parts of male “singing” became normal again and the initial ripple became weaker (Fig. 2. 3, 4, 7-8). Thus, in keeping species of genus Erianthus in insectarium it should be taken into account that their feeding plant also appears to be a substrate of communication. As our first experience has shown, these insects can rub through not the best conditions with successive growing.
- Добавил в систему: Бенедиктов Александр Александрович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 2008_Benediktov_-_Erianthus.pdf | 329,6 КБ | 18 марта 2019 [Benediktov] | |
| 2. | Иллюстрация | POSTER | 2007d_poster_erianthus-120x80.jpg | 1,1 МБ | 14 октября 2013 [Benediktov] |