Genetic variation in the heat-stress survival of embryos is largely decoupled from adult thermotolerance in an intercontinental set of recombinant lines of Drosophila melanogaster

Borda, Miguel Angel; Gómez, Federico H.; Sambucetti, Pablo; Norry, Fabian M.

doi:10.1016/j.jtherbio.2021.103119

Cited by 3 publications

(5 citation statements)

References 43 publications

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“…Thermal stress in other terrestrial arthropods, such as in Drosophila, has indicated that embryogenesis is a period of low thermal resistance (Borda et al, 2021;Bowler and Terblanche, 2008;Hallman and Denlinger, 1998;Harvey et al, 2020;Rocha et al, 2017), but no studies have compared differences throughout embryonic development.…”

Section: Discussionmentioning

confidence: 99%

“…Embryos are more sensitive to thermal stress than other life stages due to their relatively narrow thermal tolerance breadth and inability to behaviorally thermoregulate (Hallman and Denlinger, 1998). Of importance, thermal tolerance measurements in eggs have been understudied when compared to other developmental stages (Borda et al, 2021; Bowler and Terblanche, 2008; Kramer et al, 2021; Tippelt et al, 2020; Weaving et al, 2022). For tick eggs where larval emergence still occurred after thermal stress, we observed differences in developmental rates depending on when eggs were exposed.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Egg hatching success is significantly influenced by the time of thermal stress in multiple hard tick species

Ajayi

Oyen

Davies

et al. 2022

Preprint

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Worldwide, ticks are blood-feeding arthropods responsible for the transmission of disease-causing pathogens to a wide range of vertebrate hosts, including livestock and humans. Tick-borne diseases have been implicated in significant economic losses to livestock production, and this threat will increase as these obligate parasites widen their geographical ranges. Just like in other ectotherms, thermal stress due to changing global temperatures has been shown to influence tick survival and distribution. However, the influence of extreme temperatures in ticks focused on advanced, mobile stages, ignoring stages that are immobile and cannot move to more favorable microhabitats. In this study, low- and high-temperature regimens were assessed in relation to egg viability for hard tick species. Tick eggs exposed early in development were significantly more susceptible to thermal stress when compared with those exposed later in development. In our tested models, treatment was more important for egg hatching than species differences. Lastly, there was evidence of extreme thermal exposure significantly altering the hatching times of tick eggs for specific treatments. These results provide insights into the critical period for tick egg viability and potential tick control strategies as the globe continues to experience climate change.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Egg hatching success is significantly influenced by the time of thermal stress in multiple hard tick species

Ajayi

Oyen

Davies

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Embryos are more sensitive to thermal stress than other life stages due to their relatively narrow thermal tolerance breadth and inability to behaviorally thermoregulate (Hallman and Denlinger 1998). Of importance, thermal tolerance measurements in eggs have been understudied when compared to other developmental stages (Bowler and Terblanche 2008, Tippelt et al 2020, Borda et al 2021, Kramer et al 2021, Weaving et al 2022). For tick eggs where larval emergence still occurred after thermal stress, we observed differences in developmental rates depending on when eggs were exposed.…”

Section: Discussionmentioning

confidence: 99%

“…This is consistent with thermal tolerance in vertebrates where major structural and organ systems rapidly develop in early embryonic stages and are more sensitive to environmental perturbations compared with later stages (Sadler 2018). Thermal stress in other terrestrial arthropods, such as in Drosophila , has indicated that embryogenesis is a period of low thermal resistance (Hallman and Denlinger 1998, Bowler and Terblanche 2008, Rocha et al 2017, Harvey et al 2020, Borda et al 2021), but no studies have compared differences throughout embryonic development. Our data suggest that the tick eggs are more vulnerable to extreme temperatures than active-stages and eggs are most vulnerable during the earliest stages of embryogenesis, suggesting that abnormal cold snaps or heat waves in early spring may be more important in determining tick abundance than mid-summer conditions.…”

Section: Discussionmentioning

confidence: 99%

Egg hatching success is influenced by the time of thermal stress in four hard tick species

Ajayi,

Oyen,

Davies

et al. 2023

Journal of Medical Entomology

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Ticks are blood-feeding arthropods responsible for the transmission of disease-causing pathogens to a wide range of vertebrate hosts, including livestock and humans. Tick-borne diseases have been implicated in significant economic losses to livestock production, and this threat will increase as these obligate parasites widen their geographical ranges. Similar to other ectotherms, thermal stress due to changing global temperatures has been shown to influence tick survival and distribution. However, studies on the influence of extreme temperatures in ticks have focused on advanced, mobile stages, ignoring immobile stages that cannot move to more favorable microhabitats. In this study, low- and high-temperature regimens were assessed in relation to egg viability for hard tick species—Amblyomma maculatum (Gulf Coast tick), Ixodes scapularis (black-legged tick), Dermacentor variabilis (American dog tick), and Rhipicephalus sanguineus (Brown dog tick). Tick eggs exposed early in development (freshly laid during early embryo development) were significantly more susceptible to thermal stress when compared with those exposed later in development (late embryo development denoted by a fecal spot). Based on our studies, differences in egg hatching success among treatments were greater than in hatching success when comparing species. Lastly, there was evidence of extreme thermal exposure significantly altering the hatching times of tick eggs for specific treatments. These results provide insights into the critical period for tick egg viability in relation to thermal exposure and tick survival associated with stress and climate change.

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Mating success at elevated temperature is associated to thermal adaptation in a set of recombinant inbred lines of Drosophila melanogaster

Stazione

Sambucetti

Norry

2023

Journal of Insect Physiology

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Genetic variation in the heat-stress survival of embryos is largely decoupled from adult thermotolerance in an intercontinental set of recombinant lines of Drosophila melanogaster

Cited by 3 publications

References 43 publications

Egg hatching success is significantly influenced by the time of thermal stress in multiple hard tick species

Egg hatching success is significantly influenced by the time of thermal stress in multiple hard tick species

Egg hatching success is influenced by the time of thermal stress in four hard tick species

Mating success at elevated temperature is associated to thermal adaptation in a set of recombinant inbred lines of Drosophila melanogaster

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