Academic Journal
Arrhythmic adult ecdysis but rhythmic emergence from the host chorion in Trichogramma embryophagum (Hymenoptera: Trichogrammatidae)
| العنوان: | Arrhythmic adult ecdysis but rhythmic emergence from the host chorion in Trichogramma embryophagum (Hymenoptera: Trichogrammatidae) |
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| المؤلفون: | Sergey Ya. REZNIK, Natalia D. VOINOVICH, Nina P. VAGHINA, Svetlana G. KARPOVA |
| المصدر: | European Journal of Entomology, Vol 105, Iss 1, Pp 81-85 (2008) |
| بيانات النشر: | Institute of Entomology, Biology Centre, Czech Academy of Science, 2008. |
| سنة النشر: | 2008 |
| المجموعة: | LCC:Zoology |
| مصطلحات موضوعية: | parasitoids, hymenoptera, trichogramma, circadian rhythms, photoperiod, pupal-adult ecdysis, adult emergence, Zoology, QL1-991 |
| الوصف: | In many insect species with a pupa covered by various "shells" (puparium, host remains, etc.) pupal-adult ecdysis and emergence to the open air represent two discrete steps. However, in Trichogramma, as well as in other insect parasitoids, these two processes have never been studied separately. We investigated the temporal pattern of pupal-adult ecdysis and of adult emergence from the host chorion in Trichogramma embryophagum Hartig (Hymenoptera: Trichogrammatidae) in laboratory conditions (12L : 12D, 20°C). Adult ecdysis was arrhythmic, while adult emergence showed a strong rhythmicity. The time lag between ecdysis and emergence varied from one to almost two days, depending on the circadian time of the ecdysis. The proportion of ecdysed adults that stayed in the host chorion ranged up to 60% (just before the highest peak of emergence). The cumulative percentage of ecdysed adults gradually increased with time, independently of whether the light was turned on in accordance with the entrained circadian rhythm or 4 h earlier. This arrhythmic ecdysis could be explained by the fact that the ecdysed adults get into a well protected space inside the host chorion and the timing of this event is adaptively neutral. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1210-5759 1802-8829 |
| Relation: | https://www.eje.cz/artkey/eje-200801-0011_Arrhythmic_adult_ecdysis_but_rhythmic_emergence_from_the_host_chorion_in_Trichogramma_embryophagum_Hymenoptera.php; https://doaj.org/toc/1210-5759; https://doaj.org/toc/1802-8829 |
| DOI: | 10.14411/eje.2008.011 |
| URL الوصول: | https://doaj.org/article/82a4a440751b4de88993cc6f6d561dbe |
| رقم الانضمام: | edsdoj.82a4a440751b4de88993cc6f6d561dbe |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 12105759 18028829 |
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| DOI: | 10.14411/eje.2008.011 |