Typhlodromalus aripo De Leon (Acari: Phytoseiidae) development and reproduction on major cassava pests at different temperatures and humidities: an indication of enhanced mite resilience

Suitability of date palm pollen as an alternative food source for the predatory mite Cydnoseius negevi (Swirski and Amitai) (Acari: Phytoseiidae) at a low relative humidity

“…In addition, in this study, total mean fecundity and longevity of C. negevi females significantly declined when humidity levels decreased from 60 to 35 %. Similar trends were reported by Mutisya et al (2014) while studying biology of T. aripo feeding on cassava green mite, M. progresivus Doreste. However, the total mean fecundity and adult longevity of C. negevi fed on date palm pollen, even at 60 % RH, was recorded greatly lower in the present study as compared when it fed on castor bean pollen, Ricinus communis L at 70-75 % RH (Abou Awad Abou-Awad et al, 1989Abou-Elella et al, 2013Riahi et al, 2017Riahi et al, 2016Abou-Elella et al, 2014Fouly et al, 2013Abou-Elella et al, 2013 Al shammery, 2011 Fouly, 1997Zaher et al, 1969…”

“…Often, fecundity, oviposition period, and longevity of phytoseiid mites were found to be higher and longer at high humidity than at low (Kumari and Sadana 1991;Schausberger 1998;Mutisya et al 2014) as found in this study. However, total mean fecundity values were higher in three previous studies conducted at 70-75 % RH when E. scutalis fed on date palm pollen than recorded in the present study even at high RH (65%), but the longevity found was the same (Al-Shammery 2011;Abou-Elella et al 2013;Fouly et al 2013) (Table 4).…”

“…This probably explains the differences in the total duration of the immature stage development at the different humidity levels tested (Table 1). Similar trends were recorded when Typhlodromus aripo De Leon was reared under low humidity conditions feeding on cassava green mite Mononychellus progresivus Doreste, (Mutisya et al 2014).…”

Efecto de la humedad relativa en la viabilidad de huevos de Neoseiulus sp. y Proprioseiopsis iorgius (Acari: Phytoseiidae) en condiciones de laboratorio

“…Al respecto, C. picanus, otro fitoseido colectado en el ambiente desértico de Pica por Ragusa (Ragusa, 2000) mostró una gran tolerancia a la baja humedad relativa con un 40% de eclosión de larvas a 42,35 ± 5,01% HR (23,7 hPa) y 29,44 ± 1,47 ºC (Tello et al, 2009). Otro fitoseido muy tolerante a la baja humedad relativa es Typhlodromalus aripo De León, el cual registró un 70% de eclosión de sus larvas a 50% HR (17,8 hPa) y con una temperatura de 27 ºC (Mutisya et al, 2014). En Sudamérica, el fitoseido Euseius citrifolius Denmark & Muma ha demostrado una alta tolerancia de sus huevos a la baja humedad relativa, similar a Neoseiulus sp., registrando para 30 y 40% HR (22,2 y 19,0 hPa, respectivamente), porcentajes de eclosión de larvas de 30 ± 10% y 57 ± 7%, a una temperatura de 25 ºC (De Vis et al, 2006).…”