Effect of cold storage on development and demographic parameters ofScolothrips longicornisfed on two-spotted spider mite

Abstract

Cold storage effects on the female predatory thrips Scolothrips longicornis Priesner (Thysanoptera: Thripidae) fed on Tetranychus urticae Koch eggs for different time periods (5, 10, 20 and, 30 days) at 5 or 25 °C (control) on development and life table parameters were examined. Female adult duration and female total longevity were not influenced by the period of cold storage. The minimum mean female total longevity (28.1 ± 0.32 day) was observed in the 30-day treatment. The oviposition period decreased with increasing cold storage duration. All life table parameters of S. longicornis demonstrated a significant difference across treatments. Our results demonstrated that the female adult of S. longicornis could be maintained at 5 °C for 5-days with minimal reduction in the life-history process. This would be beneficial in the storage and mass production of S. longicornis in biocontrol programs involving T. urticae.

Temperature-dependent parasitism model of Trissolcus grandis Thompson (Hymenoptera: Scelionidae)

“…This is the first study to report T. grandis parasitism at a wide range of temperatures and enabled us to develop a parasitism model for T. grandis. For this reason, and because the fecundity of solitary parasitoids is equal to its potential, I used the Curry & Feldman (1987) method to express parasitism, an approach that has been applied to construct an oviposition model for many arthropod pests (Kim & Lee, 2003a;Kim & Lee, 2003b;Marchioro & Foerster, 2012;Pakyari et al, 2012;Kim et al, 2013;Kang et al, 2015;Pakyari et al, 2016;San Choi & Kim, 2016 ;Baek et al, 2017;Lee et al, 2018;Noor-ul-Ane et al, 2018;Choi et al, 2020;Farazmand & Amir-Maafi, 2020;Park & Lee, 2020;Geng et al, 2021;Noor-ul-Ane & Jung, 2022). In the present study, T. grandis can develop its population at least at temperatures from 15 to 37.5 °C and showed interesting biological traits at different temperatures.…”

Effects of visible light wavelength on development and demographic parameters of Phytoseiulus persimilis (Acari: Phytoseiidae)

“…Producing predators for commercial purposes necessitates efficient mass rearing techniques and strategies to ensure the predators' well-being until they are utilized by customers (Pakyari 2022). Light wavelength and light intensity are abiotic factors that can impact the insect biology and physiology (Sakai et al 2002).…”

Biological performance and predation rate ofScolothrips longicornisPriesner fed onTetranychus urticaeKoch.

“…takahashii Priesner (Gotoh et al, 2004), S . indicus Priesner (Ho and Chen 2001a, 2001b) and S. longicornis (Pakyari, 2022). Scolothrips longicornis is a native natural enemy from different regions, containing India, North America and the Middle East (Pakyari et al, 2011a), and was demonstrated in Iran in 1996 for the first time (Alavi & Kamali, 1996).…”

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Predatory thrips are importantly beneficial insects that have varying degrees of specialization on mites; however, all Scolothrips species are known to be specialized on Tetranychus urticae Koch (Pakyari et al, 2009). Different species of Scolothrips have been examined for reliable potential in the biocontrol of T. urticae, specifically S. sexmaculatus (Pergande) (Coville & Allen, 1977), S. takahashii Priesner (Gotoh et al, 2004), S. indicus Priesner (Ho and Chen 2001a, 2001b and S. longicornis (Pakyari, 2022). Scolothrips longicornis is a native natural enemy from different regions, containing India, North America and the Middle East (Pakyari et al, 2011a), and was demonstrated in Iran in 1996 for the first time (Alavi & Kamali, 1996).

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