Effect of constant temperature regimes on the biological parameters of an anthocorid predator Orius tantillus (Motsch)

Abstract

Experiments were conducted to investigate the effect of different temperature regimes (16, 20, 24, 28, 32 and 36±1°C) on the biological and fertility table parameters of Orius tantillus (Motsch.), an efficient indigenous predator of various thrips species in India Temperature influenced the development and reproduction of O. tantillus. Based on the biological parameters, viz. longevity, fecundity and fertility parameters, 24°C was recorded to be the optimum temperature for rearing O. tantillus. The temperature of 16°C had a detrimental effect on nymphal survival, while 36°C on fecundity. Thus, 16 and 36°C were recorded as unsuitable for rearing O. tantillus. The lower threshold temperatures for development of eggs and nymphs of O. tantillus were 8.66 and 6.92°C, respectively, indicating that the eggs are more heat-sensitive than the nymphs. Based on the T 0 values, O. tantillus appears to be less heat sensitive in comparison to other Orius spp. The information generated through this study could be used for further improving the standardized production protocol for O. tantillus and also for planning and timing field releases to target thrips species.

Linking life table and predation rate for evaluating temperature effects on Orius strigicollis for the biological control of Frankliniella occidentalis

“…The fecundity of insects is limited under high-temperature conditions (Harrison et al, 2012). For example, when the temperature was 32-36 • C, the fecundity of Orius tantillus decreased substantially (Ballal et al, 2017), and the fecundity of both Orius laevigatus and Orius albidipennis decreased substantially as the temperature was increased to 35 • C (Cocuzza et al, 1997;Sanchez and Lacasa, 2002). As a result of physiological trade-offs, insects may need to reduce their fecundity to ensure high-quality egg production (Berger et al, 2008).…”

“…Numerous studies have assessed the influence of temperature on the development, fecundity, and functional response of Orius species (Nagai and Yano, 1999;Ohta, 2001;Baniameri et al, 2005;Ballal et al, 2017). Experimental studies on the integrated life table traits and predatory rates of Orius species in response to temperature can precisely elucidate the biological control efficiency of Orius and predator-prey relationships (Ding et al, 2021).…”

Morphology and biology of litter-inhabiting Buchananiella indica Muraleedharan (Hemiptera: Anthocoridae)

“…Orius majusculus (Reuter), Orius laevigatus (Fieber) and Orius tantillus (Motsch. ), which are also highly amenable to rearing on eggs of alternate laboratory hosts (Tommasini et al, 2004;Ballal et al, 2012). Based on the above and considering the fact that B. indica could be successfully reared for more than 20 generations, it would be worth investigating if this anthocorid has a functional role as a potential predator of field crop pests and storage pests.…”

Endophytic Fungi‐Mediated Defense Signaling in Maize: Unraveling the Role of WRKY36 in Regulating Immunity against Spodoptera frugiperda

“…Key biological control agents against S. frugiperdas include Beauveria bassiana, Metarhizium anisopliae, Bacillus thuringiensis, and various entomopathogenic fungi. Parasitic insect natural enemies such as Telenomus remus (Nixon), Cotesia marginiventris (Cresson), and Trichogramma pretiosum (Riley) have shown promise, along with predatory insects like predatory bugs, Sarcophagidae, and ladybirds (Ballal et al, 2021).…”

“…Through long-term coevolution, they have established a mutually beneficial symbiotic relationship (Batool et al, 2022b). Plants provide essential carbon sources for the growth of endophytic microorganisms, while these microorganisms, in turn, contribute to plant growth and development by producing specific metabolites that enhance the plant's resistance to biotic and abiotic stresses (Batool et al, 2022a, Ballal et al, 2021. Their benefits extend to promoting plant growth, improving resistance against stresses, and aiding in the recovery of damaged or contaminated soil (Arnold et al, 2003).…”