caa a22 4500 606161481 CHVBK 20210128100634.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10526-015-9682-3 doi (NATIONALLICENCE)springer-10.1007/s10526-015-9682-3 Effect of Beauveria bassiana infection on the feeding performance and antioxidant defence of red palm weevil, Rhynchophorus ferrugineus [Elektronische Daten] [Abid Hussain, Muhammad Rizwan-ul-Haq, Hassan Al-Ayedh, Sohail Ahmed, Ahmed Al-Jabr] The entomopathogenic fungal infection of target hosts depends on pathogen fitness and host defence mechanisms. Pathogen-host interactions in red palm weevil, Rhynchophorus ferrugineus larvae are poorly understood. In order to explore this interaction, 4th, 8th, and 12th instar red palm weevil larvae were immersed in conidial suspensions of four isolates of Beauveria bassiana. Significant differences in the virulence of the tested isolates were revealed by LT50 values. Conidia of B8463, a highly virulent isolate, showed 33.53% higher relative hydrophobicity and twice as much Pr1 activity than conidia of B8465. Growth indices, calculated after 72h of incubation, revealed significant differences in the food utilization efficiencies of all studied larval instars infected with different isolates. Conidial infection with B8463 caused 39-45% reduction in efficacy of consumption of ingested food (ECI) and 55-61% reduction in digested food (ECD). The least virulent isolate, B8465, caused the smallest reduction in ECI (2-4%) and ECD (3-9%). Furthermore, enhanced expression of target antioxidant genes (catalases and peroxidase) was observed in larvae infected with virulent isolates. Similarly, approximate digestibility showed an opposite trend, with the highest values being recorded from samples infected with the most virulent conidia (B8463) at each studied larval instar. In conclusion, isolate B8463 significantly affected the growth and development of red palm weevil larvae and has good potential for use in eco-friendly R. ferrugineus management. International Organization for Biological Control (IOBC), 2015 Defense nationallicence Entomopathogenic fungi nationallicence Pathogen fitness nationallicence Nutritional indices nationallicence Red palm weevil nationallicence Virulence nationallicence Hussain Abid Laboratory of Bio-control and Insect Molecular Biology, Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 400, 36362, Hufuf, Al-Ahsa, Kingdom of Saudi Arabia aut Rizwan-ul-Haq Muhammad Laboratory of Bio-control and Insect Molecular Biology, Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 400, 36362, Hufuf, Al-Ahsa, Kingdom of Saudi Arabia aut Al-Ayedh Hassan Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology, P.O. Box 6086, 11442, Riyadh, Kingdom of Saudi Arabia aut Ahmed Sohail Department of Agri-Entomology, University of Agriculture Faisalabad, Faisalabad, Pakistan aut Al-Jabr Ahmed Laboratory of Bio-control and Insect Molecular Biology, Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 400, 36362, Hufuf, Al-Ahsa, Kingdom of Saudi Arabia aut BioControl Springer Netherlands 60/6(2015-12-01), 849-859 1386-6141 60:6<849 2015 60 10526 https://doi.org/10.1007/s10526-015-9682-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10526-015-9682-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hussain Abid Laboratory of Bio-control and Insect Molecular Biology, Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 400, 36362, Hufuf, Al-Ahsa, Kingdom of Saudi Arabia aut NATIONALLICENCE 700 1- Rizwan-ul-Haq Muhammad Laboratory of Bio-control and Insect Molecular Biology, Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 400, 36362, Hufuf, Al-Ahsa, Kingdom of Saudi Arabia aut NATIONALLICENCE 700 1- Al-Ayedh Hassan Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology, P.O. Box 6086, 11442, Riyadh, Kingdom of Saudi Arabia aut NATIONALLICENCE 700 1- Ahmed Sohail Department of Agri-Entomology, University of Agriculture Faisalabad, Faisalabad, Pakistan aut NATIONALLICENCE 700 1- Al-Jabr Ahmed Laboratory of Bio-control and Insect Molecular Biology, Department of Arid Land Agriculture, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 400, 36362, Hufuf, Al-Ahsa, Kingdom of Saudi Arabia aut NATIONALLICENCE 773 0- BioControl Springer Netherlands 60/6(2015-12-01), 849-859 1386-6141 60:6<849 2015 60 10526