Gregarious phase of Plassey borer, Chilo tumidicostalis in Sugarcane

Impact of different Trichogramma chilonis populations from sugarcane fields on parasitism of Corcyra cephalonica

“…It is reported that the maximum parasitism of a high-temperature tolerant strain and local Ludhiana strain of T. chilonis showed a negative and positive correlation with temperature and relative humidity, respectively (Singh & Shenhmar, 2008). The study of Baitha and Varma (Baitha & Varma, 2016) than the field populations. There were also significant differences in the percentage of eggs parasitized by C. cephalonica between the different field populations of T. chilonis.…”

“…The parasitoid T. chilonis is considered one of the most efficient biological agents used for sugarcane borer control (Qin et al, 2019; Ruhela et al, 2021). However, the extent of parasitism by T. chilonis differs with region and within season in the same region (Baitha & Varma, 2016). To this end, the functional response is one of the most informative ways to study the density responsiveness of a natural enemy to a target pest (Manohar et al, 2020).…”

“…The parasitoid wasp, Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) is a widely distributed egg parasitoid of sugarcane stem borers throughout the world. Its role in exploitation as a potential biocontrol agent in management of sugarcane tissue borers has recently been reaffirmed (Baitha & Varma, 2016; Qin et al, 2019). As a result, many applied studies have been undertaken to investigate the biocontrol of sugarcane borers by T. chilonis .…”

“…Functional response experiments may be conducted to evaluate parasitoid/predator potential in suppressing the different prey/host densities and can be helpful in preliminary screening of natural enemies as well as predicting the results of their release under field conditions (Carneiro et al, 2010;Moezipour et al, 2008). Some bionomic studies on T. chilonis have been conducted (Baitha & Varma, 2016;Benvenuto et al, 2012;Qin et al, 2019;Rani et al, 2017;Reay-Jones et al, 2006;Singh et al, 2006). However, there are no reports available on the functional response of T. chilonis populations from different sugarcane fields to C. cephalonica egg densities under laboratory conditions.…”

“…Some bionomic studies on T. chilonis have been conducted (Baitha & Varma, 2016; Benvenuto et al, 2012; Qin et al, 2019; Rani et al, 2017; Reay‐Jones et al, 2006; Singh et al, 2006). However, there are no reports available on the functional response of T. chilonis populations from different sugarcane fields to C. cephalonica egg densities under laboratory conditions.…”