Life-stage related responses to combined effects of acclimation temperature and humidity on the thermal tolerance of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae)

Fluctuating environments impact thermal tolerance in an invasive insect species Bactrocera dorsalis (Diptera: Tephritidae)

“…The present study shows that VPD decreased with increased amplitude such that fluctuations ranged from 1.26-1.33 kPa, 1.12-1.32 kPa, 0.88-1.32 kPa and 0.52-1.32 kPa for δ3°C;7% RH, δ6°C;14% RH, δ9°C;21% RH and δ12°C; 28% RH amplitudes, respectively. This indicates VPD In a previous study, we reported significant interactive effects of static temperature and RH on C. partellus thermal tolerance following developmental acclimation (Mutamiswa et al, 2019). This is in corroboration with the present study where dynamic interaction of thermal and moisture regimes influenced B. dorsalis thermal tolerance.…”

“…Nevertheless, most studies have often dwelt on the extent to which mean and fluctuating temperatures affect insect fitness under changing environments (see Cavieres et al, 2018;Chidawanyika et al, 2017), without accounting for changing RH gradient. Using adult Chilo partellus (Lepidoptera: Crambidae), Mutamiswa et al (2019) recently reported effects of larval, pupal and adult acclimation under variable temperature and RH regimes on thermal tolerance. In this study, interactive costs and benefits of developmental stage, temperature and RH in driving thermal plasticity in C. partellus were evident (see Mutamiswa et al, 2019).…”

“…Using adult Chilo partellus (Lepidoptera: Crambidae), Mutamiswa et al (2019) recently reported effects of larval, pupal and adult acclimation under variable temperature and RH regimes on thermal tolerance. In this study, interactive costs and benefits of developmental stage, temperature and RH in driving thermal plasticity in C. partellus were evident (see Mutamiswa et al, 2019). Cognisant of increasing extreme events, climate variability and overlapping stressful environments with global climate change, this raises an interesting question of how simultaneous fluctuations in both temperature and RH may influence fitness and population dynamics among arthropods.…”

Increased duration of extreme thermal events negatively affects cold acclimation ability in a high-latitude, freshwater ectotherm (Ischnura elegans; Odonata: Coenagrionidae)

“…Generally there is little evidence to support an improved thermal tolerance with age (Bowler & Terblanche, 2008), although some studies have shown that a rapid hardening effect declines with age (Czajka & Lee, 1990). More work is necessary to determine how the impacts of the duration of heat or cold stress on subsequent cold tolerance differ across life stages, and how this is carried on into adult fi tness in important aquatic species such as damselfl ies; previous work suggests that acclimation at different life stages can have different fi tness costs and benefi ts (Ma et al, 2004;Mutamiswa et al, 2018).…”

Maternal effect determines drought resistance of eggs in the predatory mite Phytoseiulus persimilis

“…depending on many factors, like the developmental stages of insects and mites (Whitman and Agrawal 2009;Potter and Woods 2012;Ghazy et al 2016;Fischer and Kirste 2018;Mutamiswa et al 2019). Early developmental stages such as eggs and larvae are often considered more vulnerable to environmental stresses, because of their limited dispersal ability and their small size (Schausberger 1998;Montserrat et al 2007;Walzer et al 2007;Ferrero et al 2010;Potter and Woods 2012;Döker et al 2016;Torres-Campos et al 2016).…”