بررسی اثر طول دوره روشنایی بر زادآوری، طول عمر و نسبت جنسی زنبور پارازیتویید Trichogramma brassicae (Hym: Trichogrammatidae)

نوع مقاله: دومین کنگره بین‌المللی حشره شناسی

نویسندگان

1 گروه گیاهپزشکی، دانشکده کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران

2 عضو هیئت علمی دانشگاه تهران

3 گروه گیاه‌پزشکی پردیس کشاورزی و منابع طبیعی، دانشگاه تهران

چکیده

در این تحقیق اثر رژیم­های مختلف نوری شامل تاریکی مطلق، 3، 6، 9، 12، 15، 18، 21 و روشنایی مطلق بر میزان پارازیتیسم تخم­های Ephestia kuehniella Zeller (Lep: Pyralidae) توسط زنبور پارازیتویید Trichogramma brassicae Bezdenko (Hym: Trichogrammatidae) مورد مطالعه قرار گرفت. بنابر نتایج به­دست آمده، زادآوری پارازیتوییدهای ماده (تعداد تخم­های پارازیته شده E. kuehniella) پرورش یافته در رژیم­های نوری متفاوت، مستقل از طول دوره روشنایی بود اماطول دوره روشنایی دارای اثر معنی­دار بر طول عمر پارازیتوییدهای ماده بود.حداقل میزان زادآوری و طول عمر در رژیم نوری 18 ساعت روشنایی: 6 ساعت تاریکی و حداکثر میزان زادآوری و طول عمر به ترتیب در رژیم­های نوری 21 ساعت روشنایی: 3 ساعت تاریکی و تاریکی مطلق مشاهده شد. از طرف دیگر، نسبت ماده­ها وابسته به رژیم نوری بوده و حداکثر نسبت ماده­ها در رژیم نوری 18 ساعت روشنایی: 6 ساعت تاریکی مشاهده شد. بنابر نتایج به دست آمده، به نظر می­رسد که قرارگیری زنبورهای پارازیتویید در رژیم­های نوری بلندمدت منجر به افزایش طول عمر و نسبت ماده­ها از طریق تحریک برخی غدد و به دنبال آن ترشح گروه خاصی از هورمون­ها می­شود. بنابراین رژیم نوری بلندمدت می­تواند منجر به افزایش کارایی پارازیتویید از طریق افزایش طول عمر و نسبت ماده­ها شود.       

کلیدواژه‌ها


عنوان مقاله [English]

Photoperiod Effect on Fecundity, Longevity and Sex ratio of Trichogramma brassicae (Hym: Trichogrammatidae)

نویسندگان [English]

  • Somayeh Rahimi Kaldeh 1
  • Ahmad Ashouri 2
  • Alireza Bandani 3
1 Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
2 Department of Plant Protection, University of Tehran, Karaj, Iran
3 Department of Plant Protection, University of Tehran, Karaj, Iran
چکیده [English]

The effect of photoperiod on parasitization of the eggs of Ephestia kuehniella Zeller (Lep: Pyralidae) by Trichogramma brassicae Bezdenko (Hym: Trichogrammatidae) was investigated under several photoperiodic regimes of L: D = 0: 24, 3: 21, 6: 18, 9: 15, 12: 12, 15: 9, 18: 6, 21: 3 and absolute light on. Fecundity of T. brassicae females (the number of parasitized E. kuehniella eggs) was independent of photoperiod in the whole life time of females. However, photoperiod had a significant influence on the longevity of T. brassicae females. The least fecundity and longevity was for those that developed and were kept under 18L: 6D and the highest fecundity and longevity was for those that developed and were kept under 21L: 3D and absolute darkness, respectively. On the other hand, the proportion of T. brassicae females was dependent of photoperiod and the highest proportion of females was observed under 18L: 6D. It seems that long term photoperiods may stimulate a particular gland to secret a special hormone which results in more longevity and female proportion of parasitoid. As a conclusion, long term photoperiods may improve efficiency of the parasitoid by increasing longevity and sex ratio. 

 

کلیدواژه‌ها [English]

  • Egg parasitoid
  • fecundity
  • longevity
  • photoperiod
  • Sex ratio

Calvin, D. D., Knapp, M. C., Welch, S. M., Poston, F. L. & Elzinga, R. J. (1984) Impact of environmental factors on Trichogramma pretiosum reared on southwestern corn borer eggs. Environmental Entomology 13, 774-780.

Consoli, F. L. & Parra, J. R. P. (1994) Effects of photoperiod on the biology of Trichogramma galloi Zycchi. Anais da Sociedade Entomologica do Brasil 23, 467-472.

Corrigan, J. E., Laing, J. E. & Caddick, G. (1994) Feasibility of delaying emergence of Trichogramma minutum Riley (Hymenoptera, Trichogrammatidae) and subsequent effects on adult longevity and fecundity. Proceedings of the Entomological Society of Ontario125, 81-86.

Denlinger, D. L. (2002) Regulation of diapause. Annual Review of Entomology 47, 93-122.

Ebrahimi, E., Pintureau, B. & Shojai, M. (1998) Morphological and enzymatic study of the genus Trichogramma in Iran. Applied Entomology and Phytopathology 66, 39-43.

Garcia, P. & Tavares, J. (2001) Effect of host avaibility on Trichogramma cordubensis (Insecta: Hymenoptera) reproductive strategies. Arquipelago Life and Marine Sciences Supplement2, 43-49.

Hoffmann, M. P., Ode, P. R., Walker, D. L., Gardner, J., van Nouhuys, S. & Shelton, A. M. (2001) Performance of Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) reared on factitious hosts, including the target host, Ostrinia nubilalis (Lepidoptera: Crambidae). Biological Control 21, 1-10.

Meuti, M. E. & Denlinger, D. L. (2013) Evolutionary links between circadian clocks and photoperiodic diapause in insects. Integrative and Comparative Biology 53, 131-143.

Park, Y. K., Lee, H. P., Lee, K. S., Han, M. W. & Lee, J. O. (1999) Effect of photoperiod on oviposition and emergence of egg parasitoid, Trichogramma dendrolimi Matsumura (Hymenoptera, Trichogrammatidae). Korean Journal of Applied Entomology 38, 93-99.

Rahimi, S., Ashouri, A. & Bandani, A. R. (2014) The influence of photoperiod on fertility, survival and sex ratio of Trichogramma embryophagum (Hym.,Trichogrammatidae). 21th Iranian Plant Protection Congress.

Reznik, S. YA. & Vaghina, N. P. (2006a) Temperature effects on induction of parasitization by females of Trichogramma principium (Hymenoptera, Trichogrammatidae). Entomological Review 86, 133-138.

Reznik, S. YA. & Vaghina, N. P. (2006b) Heat shock influences on parasitization of the Angoumois grain moth Sitotroga cerealella Oliv. (Lepidoptera, Gelechiidae) eggs by the egg parasitoid Trichogramma principium Sug. et Sor. (Hymenoptera, Trichogrammatidae) females. Entomological Review 86, 861-865.

Reznik, S. YA. & Vaghina, N. P. (2007) Effect of photoperiod on parasitization by Trichogramma principium (Hymenoptera: Trichogrammatidae). European Journal of Entomology 104, 705-713.

Reznik, S. YA., Umarova, T. YA. & Voinovich, N. D. (2003) Egg retention in Trichogramma (Hymenoptera: Chalcidoidea: Trichogrammatidae): Learning or diapause? Acta Societatis Zoologicae Bohemicae 67, 25-33.

Reznik, S. YA., Voinovich, N. D. & Umarova, T. YA. (2001) Long-term egg retention and parasitization in Trichogramma principium (Hymenoptera, Trichogrammatidae). Journal of Applied Entomology 125, 169-175.

Reznik, S. Y., Voinovich, N. D. & Vaghina, N. P. (2011) Maternal influence on diapause induction in Trichogramma (Hymenoptera, Trichogrammatidae): the dynamics of photosensitivity. Journal of Applied Entomology 135 (6), 438-445.

Rounbehler, M. D. & Ellington, J. J. (1973) Some biological effects of selected light regimes on Trichogramma semifumatum (Hymenoptera: Trichogrammatidae). Annals of the Entomological Society of America 66, 6-10.

Saunders, D. S., Steel, C. G. H., Vafopoulou, X. & Lewis, R. D. (2002) Insect Clocks. 576 pp. Elsevier, Amsterdam.

Shirazi, J. (2006) Effect of temperature and photoperiod on the biological characters of Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae). Pakistan Journal of biological Sciences 9 (5), 820-824.

Smith, S. M. (1996) Biological control with Trichogramma: advances, successes, and potential of their use. Annual Review of Entomology 41, 375-406.

Tuncbilek, A. S. & Ayvaz, A. (2003) Influences of host age, sex ratio, population density, and photoperiod on parasitism by Trichogramma evanescens Westw. (Hym., Trichogrammatidae). Journal of Pest Science 76, 176-180.

Zaslavski, V. A. & Qui, M. P. (1982) An experimental study of some factors affecting fecundity in Trichogramma Westw. (Hymenoptera, Trichogrammatidae). Entomologicheskoe Obozrenie 61, 724-736.