scholarly journals Pamuk unlubiti, Phenacoccus solenopsis (Hemiptera: Pseudococcidae)’in Chrysoperla carnea (Neuroptera: Chrysopidae) ile biyolojik mücadelesi üzerine araştırmalar

Author(s):  
S. Emre GÖRÜR ◽  
Kamil KARUT
2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Abd-Allah E. Ghada ◽  
Youssef M. Naglaa

Abstract Background The importance of Chrysoperla carnea (Steph.) (Neuroptera: Chrysopidae) as a predator is due to nourishing this predator on some dangerous pests as the cotton mealybug, Phenacoccus solenopsis Tinsley, belongs to Hemiptera: Pseudococcidae. So the predator C. carnea was used in the management of various pests. The basic aim of this study was the indirect effect of some natural materials against some stages of C. carnea through feeding of the predator on the treated prey, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae). Results The results showed the comparison between the effectiveness of cinnamaldehyde and cinnamic oil in controlling the pest as soon as ineffectiveness on the predator. Cinnamaldehyde was very save against C. carnea which did not effect on the biology of it and the predator completed its life cycle as control (water + tween 80). Thus, the results suggested that cinnamaldehyde could be included in the Integrated Pest Management (IPM) Program without any adverse effect on bio-control agents used in an IPM. Conclusion This study may be a great alternative to chemical pesticides in controlling cotton mealybug, P. solenopsis, and at the same time, this material is saving to the predator C. carnea. This alternative is cinnamaldehyde (the active ingredient of cinnamon oil).


2020 ◽  
Vol 53 (1) ◽  
Author(s):  
Anam Mehwish Khanzada ◽  
Muhammad Ali Khanzada ◽  
Rehana Naz Syed ◽  
Abdul Mubeen Lodhi

2020 ◽  
Vol 129 (1) ◽  
pp. 63
Author(s):  
Khaoula Aroua ◽  
Mehmet Bora Kaydan ◽  
Cansu Ercan ◽  
Mohammed Biche

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 290
Author(s):  
Hua-Yan Chen ◽  
Hong-Liang Li ◽  
Hong Pang ◽  
Chao-Dong Zhu ◽  
Yan-Zhou Zhang

The cotton mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), is an emerging invasive insect pest in China. Hymenopteran parasitoids are the key organisms for suppressing populations of P. solenopsis in the field, and therefore could be used as biological agents. Accurate identification of the associated parasitoids is the critical step to assess their potential role in biological control. In this study, we facilitated the identification of the parasitoid composition of P. solenopsis using an integrated approach of species delimitation, combining morphology with molecular data. Eighteen Hymenoptera parasitoid species belonging to 11 genera of four families are recognized based on morphological examination and molecular species delimitation of the mitochondrial cytochrome c oxidase 1 (COI) gene and the 28S rDNA using the automatic barcode gap discovery (ABGD) and the Bayesian Poisson tree processes model (bPTP). Among these species, eight species are primary parasitoids with Aenasius arizonensis (Girault) (Hymenoptera: Encyrtidae) being the dominant taxon, while the other 10 species are probably hyperparasitoids, with a prevalence of Cheiloneurus nankingensis Li & Xu (Hymenoptera: Encyrtidae). These results indicate that parasitoid wasps associated with P. solenopsis from China are diverse and the integrated taxonomic approach applied in this study could enhance the accurate identification of these parasitoids that should be assessed in future biological control programs.


1989 ◽  
Vol 121 (4-5) ◽  
pp. 309-314 ◽  
Author(s):  
Elmer A.C. Hagley

AbstractRelease of the chrysopid, Chrysoperla cornea Stephens, at a rate of ca. 335 000 eggs per hectare, reduced significantly the numbers of apterous adults and nymphs of the green apple aphid, Aphis pomi DeGeer, on dwarf apple trees. Greater reduction in aphid numbers occurred in 1984 than in 1985, and the efficiency of the predator might have been influenced by the predator:prey ratios (1:10 and 1:19) used and by the mean daily temperature that occurred during the test periods. Application of azinphosmethyl (Guthion 50% wp, 0.105 and 0.075 kg AI/100 L) did not adversely affect predation of apterous A. pomi by larvae of C. carnea.


2021 ◽  
Vol 34 (4) ◽  
pp. 223-239
Author(s):  
Rosalind K. Humphreys ◽  
Graeme D. Ruxton ◽  
Alison J. Karley

AbstractDropping behavior is an effective antipredator defense utilized by many insects including aphids, which drop from plants to lower plant parts or underlying substrates to avoid attack from predatory invertebrates. While research commonly focusses on triggers of dropping, less attention is given to what happens to prey individuals following escape drops. In this study, the duration of tonic immobility, recovery rates, and cases of “instant recovery” (re-clinging to lower plant parts) exhibited by potato aphids (Macrosiphum euphorbiae) that dropped from potted seedlings in response to introduced ladybird (Adalia bipunctata) adults, lacewing (Chrysoperla carnea) larvae, and a standardized tactile stimulus were investigated in relation to a range of environmental factors. Air temperature had a negative correlation with the duration of post-dropping tonic immobility; as temperature increased, time spent motionless decreased. Aphids also showed a pattern of increased recovery rate at higher temperatures. Aphids may be selected to move off the substrate quicker to avoid risks of overheating/desiccation at higher temperatures; and/or higher body temperature facilitates locomotion. Stimulus type also influenced recovery rate back to the original seedling, with aphids generally recovering after the standardized stimulus quicker than after dropping triggered by a real predator. Considering cases of instant recovery onto lower-reaches of the host seedling, seedling height influenced the likelihood of re-clinging, with aphids that managed to instantly recover dropping from, on average, taller seedlings than aphids that dropped to the substrate. Plant architecture could mitigate the costs of dropping for aphids, but further studies quantifying understory foliage cover are needed.


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