Predation rate of Hippodamia variegata (Coleoptera: Coccinellidae) feeding on different densities of Aphis gossypii (Hemiptera: Aphididae)

نویسندگان

گروه گیاه پزشکی، دانشکده علوم کشاورزی دانشگاه گیلان، رشت ، ایران.

چکیده

نرخ شکارگری اساس هر پژوهش در برهم‌کنش شکار-شکارگر است و یکی از اجزای مهم در انتخاب شکارگران در کنترل بیولوژیک به­شمار می­رود. نرخ شکارگری کفشدوزکHippodamia variegata (Goeze)  با تغذیه از تراکم­های مختلف (20، 40، 60، 80 و 100) عدد از پوره­های سن سوم شته پنبه Aphis gossypii Glover در شرایط آزمایشگاهی (1±25 درجه سلسیوس، رطوبت نسبی 5  ±65 درصد و دوره نوری 16 ساعت روشنایی و 8 ساعت تاریکی) بررسی شد. نرخ خالص شکارگری (C0) با استفاده از جدول زندگی دوجنسی سنی-مرحله­ی رشدی در تراکم­های 20، 40، 60، 80 و 100 شته به­ترتیب 50/1547، 91 /4011، 78/4450، 20/5300 و 73/5305 شته طعمه بود. میانگین نرخ­های مصرف برای نر و ماده با افزایش تراکم طعمه افزایش یافت. نرخ شکارگری برای هر دو جنس نر و ماده نیز با افزایش تراکم طعمه افزایش یافت. پایین­ترین و بالاترین نرخ­های مصرف برای ماده­ها 50/1547 و 73/5305 پوره طعمه به­ترتیب در تراکم­های 20 و 100 شته پنبه بود. نرخ تبدیل از جمعیت طعمه به نتاج شکارگر (Qp) با افزایش تراکم طعمه کاهش پیدا کرد. نتیجه­گیری شد که افزایش تراکم پوره­های سن سوم شته پنبه، تأثیرمعنی­داری روی پارامترهای شکارگری H. variegata داشت.

کلیدواژه‌ها


عنوان مقاله [English]

Predation rate of Hippodamia variegata (Coleoptera: Coccinellidae) feeding on different densities of Aphis gossypii (Hemiptera: Aphididae)

نویسندگان [English]

  • S. Davoodi Dehkordi
  • A. Sahragard
Deptartment of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran.
چکیده [English]

Predation rate is basic to any investigation of prey-predator interaction and a major component in the selection of predators for biological control. The predation rate of variegated lady beetle, Hippodamia variegata (Goze), fed on different densities (20, 40, 60, 80 and 100) of third instar nymphs of cotton aphid, Aphis gossypii Glover, was studied under laboratory conditions (25 ± 1 °C, 65 ± 5% RH and a photoperiod of 16L: 8D h). The net predation rates (C0) using age-stage, two sex life tables for 20, 40, 60, 80 and 100 aphids were calculated as 1547.50, 4011.91, 4450.78, 5300.20, 5305.73 prey nymphs, respectively. The mean consumption rates for male and female predators increased as prey density increased. The predation rate for both sexes also increased with increasing prey density. The lowest and highest predation rates for female were 1547.50 and 5305.73 prey nymphs at densities of 20 and 100 aphids, respectively. The transformation rate from prey population to predator offspring (Qp) decreased as prey density increased. It was concluded that any increase in the density of third instar nymphs of A. gossypii will result in significant effects on predation parameters of H. variegata.

کلیدواژه‌ها [English]

  • age-specific survival rate
  • net consumption rate
  • Aphis gossypii
  • transformation rate

Atlihan, R. & Bora Kaydan, M. (2010) Functional response of the coccinellid predator, Adalia Fasciatopunctata revelierei to walnut aphid (Callaphis juglandis). Phytoparasitica 38, 23-29.

Chi, H. & Yang, T. C. (2003) Two-sex life table and predation rate of Propylaea japonica Thunberg (Coleoptera: Coccinellidae) fed on Myzus persicae (Sulzer) (Homoptera: Aphididae). Environmental Entomology 32, 327-333.

Chi, H. (2014) TWOSEX-MSChart: Computer program for age-stage, two-sex life table analysis. Taichung, Taiwan: National Chung Hsing University http://140.120.197.173/Ecology/prod02.htm.

Davoodi, D. S., Sahragard, A., & Hajizadeh,J. (2013) The effect of prey density on life table parameters of Hippodamia variegata (Coleoptera: Coccinellidae) fed on Aphis gossypii (Hemiptera: Aphididae) under laboratory conditions. ISRN Entomology. Article ID 281476, 7 pages.

Farhadi, R., Allahyari, H., & Chi, H. (2011) Life table and predation capacity of Hippodamia variegata (Col.: Coccinellidae) feeding on Aphis fabae (Hem.: Aphididae). Biological Control 59, 83-89.

Franzmann, B. A. (2002) Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae), a predacious ladybird new in Australia. Australian Journal of Entomology 41, 375-377.

Hodek, I., & Honek, A. (1996) Ecology of Coccinellidae. Dordrecht, the Netherlands: Kluwer Academic. pp. 464.

Isenhour, D. J., & Yeargan, K. V. (1981) Predation by Orius insidiosus on the soybean thrips, Sericothrips variabilis: effect of prey stage and density. Environmental Entomology 10, 496-500.

Kennedy, J. S., Day, M. F., & Eastop, V. F. (1962) A conspectus of aphids as vectors of plant viruses. London, Eastern, UK, 114 pp.

Khanamani, M., Fathipour, Y., & Hajiqanbar, H. (2015) Assessing compatibility of the predatory mite Typhlodromus bagdasarjani (Acari: Phytoseiidae) and resistant eggplant cultivar in a tritrophic system. Annals of the Entomological Society of America 108(4), 501-512.

Khodaverdi, H., Sahragard, A., Amir-Maafi, M., & MohagheghNeyshabouri, J. (2012) Biological and predation characteristics of Andrallus spinidens (Heteroptera: Pentatomidae) fed on fourth instar larvae of Spodoptera littoralis (Lepidoptera: Noctuidae) under laboratory conditions. Journal of Entomological Society of Iran 32 (1), 1-19.

Leclant, F., & Deguine J. P. (1994) Aphids (Homoptera: Aphididae). pp. 285-323In: Matthews, G. A. & Tunstall, J. P. (eds). Insect Pests of Cotton. CAB International, Wallingford.

McConnell, J. A., & Kring, T. J. (1990) Predation and dislodgment of Schizaphis graminum (Homoptera: Aphididae), by adult Coccinella septempunctata (Coleoptera: Coccinellidae). Environmental Entomology 19, 1798-1802.

Milne, M., & Walter, G. H. (1997) The significance of prey in the diet of the phytophagous thrips, Frankliniella schultzei. Ecological Entomology 22, 74-81.

Nelson E. H., & Rosenheim, J. A. (2006) Encounters between aphids and their predators: The Relative frequencies of disturbance and consumption. Entomologia Experimentalis et Applicata 118, 211-219.

Obrycki, J. J., & Orr, C. J. (1990) Suitability of three prey species for Nearctic populations of Coccinella septempunctata, Hippodamia variegata and Propylea quatrodecimpunctata (Coleoptera: Coccinellidae). Journal of Economic Entomology 83, 1292-1297.

Rabb, R. L. (1974) Naturally occurring biological control in the eastern United States, with particular reference to tobacco insects. pp. 294-309. In: Huffaker, C. B. (ed.) Biological Control. 539 pp. Plenum Publ. Co. New York.

Raboudi, F., Ben Moussa, A., Makni, H., Marrakchi, M., &Makni, M. (2002) Seriological detection of plant viruses in their aphid vectors and host plants in Tunisia. EPPO Bulletin 32, 495-498.

Yu, J. Z., Chi, H., & Chen, B. H. (2005) Life table and predation of Lemnia biplagiata (Coleoptera: Coccinellidae) fed on Aphis gossypii (Homoptera: Aphididae) with a proof on relationship among gross reproduction rate, net reproduction rate, and pre adult survivorship. Annals of the Entomological Society of America 98, 475-482.