Muhammad Anjum Aqueel
Imperial College London
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Featured researches published by Muhammad Anjum Aqueel.
Pest Management Science | 2013
Muhammad Anjum Aqueel; Simon R. Leather
BACKGROUND Entomopathogenic fungi such as Verticillium lecanii (Z.) (Mycotal(®)) are used for pest control as an alternative to chemical control. In this study, the effect of V. lecanii on cereal aphids is assessed. In addition, an investigation is carried out to determine whether the use of V. lecanii affects the performance of two natural enemies of aphids, the predator Harmonia axyridis (P.) and the parasitoid Aphidius colemani (V.), in no-choice experiments under laboratory conditions. RESULTS The number of Rhopalosiphum padi (L.) and Sitobion avenae (F.) killed was increased by increasing the concentration of V. lecanii. The timing of application of fungus to aphids affected the efficacy of other biocontrol agents, a parasitoid and a predator. Parasitation by A. colemani (V.) in both cereal aphids (S. avenae and R. padi) was not affected by V. lecanii when aphids were first treated with V. lecanii and then exposed to A. colemani. The emergence of adults from parasitised mummies was, however, lower in infected aphids than in uninfected aphids when the aphids were first exposed to the parasitoids and then treated with fungus. The female sex ratio in the emerging adults was lower in V. lecanii-treated aphids in both species. When aphids were first treated with V. lecanii, 72 h before predation, fewer aphids of both species were consumed by H. axyridis (P.). CONCLUSION Use of entomopathogenic fungus as a biological control agent could be a complementary strategy in an integrated pest management programme against cereal aphids, but it can reduce the efficiency of other biocontrol agents (parasitoids and predators) when applied simultaneously.
Insect Science | 2015
Muhammad Anjum Aqueel; Abubakar Muhammad Raza; Rashad Mukhtar Balal; Muhammad Shahid; Irfan Mustafa; Muhammad Mansoor Javaid; Simon R. Leather
Host plant nutritional quality can directly and indirectly affect the third trophic levels. The aphid–parasitoid relationship provides an ideal system to investigate tritrophic interactions (as the parasitoids are completely dependent for their development upon their hosts) and assess the bottom up forces operating at different concentrations of nitrogen applications. The effects of varying nitrogen fertilizer on the performance of Aphidius colemani (V.) reared on Sitobion avenae (F.) and Aphidius rhopalosiphi (D.) reared on Rhopalosiphum padi (L.) were measured. Parasitism and percent emergence of parasitoids were positively affected by nitrogen fertilizer treatments while developmental duration (egg, larval, and pupal stages) was not affected by increasing nitrogen inputs. In males and females of both parasitoid species, adult longevity increased with the increasing nitrogen fertilizer. Hind tibia length and mummy weight of both parasitoid species increased with nitrogen fertilizer concentrations, as a result of larger aphids. This study showed that nitrogen application to the soil can have important consequences for aboveground multitrophic interactions.
Turkish journal of entomology | 2014
Mubasshir Sohail; Muhammad Anjum Aqueel; Muhammad Afzal; Abubakar Muhammad Raza; Muhammad Karman; Muhammad Sajjad Khalil
Summary Mealybug (Drosicha stebbingi Green) is voracious pest of the mango orchards. It causes heavy quality losses and low production of mango fruit (Luhanga & Gwinner 1993). The research was conducted to control the pest. Isolation, purification and characterization of amylase from mango mealybug were performed. Amylolytic activity was 365U/ml in crude homogenate of D. stebbingi whereas in acetone precipitation sample activity was 680 U/ml. The optimum pH and temperature for amylase activity was 6.4 and 50-60 oC, respectively. However, amylase activity was maximum at 3% of substrate (starch) concentration. Enzymatic activity was inhibited by Pb
Turkish Journal of Botany | 2015
Muhammad Adnan Shahid; Rashad Mukhtar Balal; Muhammad Aslam Pervez; Tahira Abbas; Muhammad Anjum Aqueel; Muhammad Mansoor Javaid; Francisco García-Sánchez
Pakistan Journal of Zoology | 2018
Sumaira Maqsood; Muhammad Afzal; Muhammad Anjum Aqueel; Waqas Wakil; Hafiz Azhar Ali Khan
Pakistan Journal of Zoology | 2017
Muhammad Abu Bakar; Muhammad Anjum Aqueel; Abu Bakar Muhammad Raza; Muhammad Irfan Ullah; Muhammad Arshad; Mubasshir Sohail; Jaime Molina-Ochoa
Pakistan Journal of Zoology | 2017
Sumaira Maqsood; Muhammad Afzal; Muhammad Anjum Aqueel; Abu Bakar Muhammad Raza; Waqas Wakil; Muhammad Hussnain Babar
Journal of entomology and zoology studies | 2016
Muhammad Abu Bakar; Muhammad Anjum Aqueel; Mubasshir Sohail; Abu Bakar Muhammad Raza; Muhammad Afzal; Muhammad Tayyab; Muhammad Arshad
Pakistan Journal of Nutrition | 2015
Muhammad Zubair; Rashad Mukhtar Balal; Muhammad Anjum Aqueel; Muhammad Shahid; Gulzar Akhtar; Ahsan Akram; Muhammad Wajid Khan; Muhammad Awais Sadiq
Archive | 2014
Muhammad Anjum Aqueel; Muhammad Afzal; Abubakar Muhammad Raza; Muhammad Kamran; Muhammad Sajjad Khalil