Fitness cost of <i>Rhagoletis cerasi</i> (Diptera: Tephritidae) adults emerged from pupae with different dormancy regimes: the case of prolonged chilling

Moraiti, Cleopatra A.; Verykouki, Eleni; Papadopoulos, Nikos T.

doi:10.1017/s0007485321000535

Cited by 4 publications

(2 citation statements)

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“…Thermal biology of the adults of some tephritids including Bactrocera dorsalis (Hendel) [1,55], Bactrocera zonata (Saunders) [56], Bactrocera tryoni (Froggatt) [57,58], Bactrocera oleae (Rossi) [59], Bactrocera tau (Walker) [60], Ceratitis cosyra (Walker) [61], Ceratitis rosa (Karsch) [62], Ceratitis quilicii (De Meyer, Mwatawala and Virgilio) [63], Eurosta solidaginis (Fitch) [64][65][66][67], Rhagoletis cerasi (Linnaeus) [68] and Rhagoletis indifferens (Curran) [69] has already been investigated. Regarding medfly, its broader distribution may justify its great cold tolerance, which might determine the establishment of populations and their invasion success [13,70,71].…”

Section: Introductionmentioning

confidence: 99%

Differential Cold Tolerance on Immature Stages of Geographically Divergent Ceratitis capitata Populations

Papadopoulos,

Koskinioti,

Zarpas

et al. 2023

Biology

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Cold tolerance of adult medflies has been extensively studied but the effect of subfreezing temperatures on the immature stages remains poorly investigated, especially as far as different populations are regarded. In this study, we estimated the acute cold stress response of three geographically divergent Mediterranean fruit fly populations originating from Greece (Crete, Volos) and Croatia (Dubrovnik) by exposing immature stages (eggs, larvae, pupae) to subfreezing temperatures. We first determined the LT50 for each immature stage following one hour of exposure to different temperatures. Then eggs, larvae and pupae of the different populations were exposed to their respective LT50 for one hour (LT50 = −11 °C, LT50 = −4.4 °C, LT50 = −5 °C for eggs, larvae and pupae, respectively). Our results demonstrate that populations responded differently depending on their developmental stage. The population of Dubrovnik was the most cold-susceptible at the egg stage, whereas in that of Crete it was at the larval and pupal stage. The population of Volos was the most cold-tolerant at all developmental stages. The egg stage was the most cold-tolerant, followed by pupae and finally the 3rd instar wandering larvae. This study contributes towards understanding the cold stress response of this serious pest and provides data for important parameters that determine its successful establishment to unfavorable environments with an emphasis on range expansion to the northern, more temperate regions of Europe.

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Section: Introductionmentioning

confidence: 99%

Differential Cold Tolerance on Immature Stages of Geographically Divergent Ceratitis capitata Populations

Papadopoulos,

Koskinioti,

Zarpas

et al. 2023

Biology

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“…Many prokaryotes (Potts 1994 ) and eukaryotes, including plants (Hoekstra et al 2001 ; Ambastha and Tiwari 2015 ), fungi (Gadd et al 1987 ), and animals (Wright 2001 ; Kikawada et al 2005 ), survive extreme temperatures and desiccation (even when 99% of the water is removed from their cells) (Crowe et al 1992 ; Alpert 2005 ) by producing specific molecules such as sugars (e.g., sucrose and trehalose) (Koster and Leopold 1988 ; Hoekstra et al 2001 ; Tapia and Koshland 2014 ) and small stress proteins (e.g., heat shock and late embryogenesis abundant proteins) (Somero et al 2017 ; Janis et al 2018 ). However, the production of these molecules, and dormancy itself, seems to be energetically costly (Wiemken 1990 ; Ellers and Van Alphen 2002 ; Moraiti et al 2023 ), suggesting that organisms face a trade-off between investment in diapause and other life-history traits.…”

Section: Introductionmentioning

confidence: 99%

The limits of stress-tolerance for zooplankton resting stages in freshwater ponds

Santos,

Ebert

2023

Oecologia

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In seasonal environments, many organisms evolve strategies such as diapause to survive stressful periods. Understanding the link between habitat stability and diapause strategy can help predict a population’s survival in a changing world. Indeed, resting stages may be an important way freshwater organisms can survive periods of drought or freezing, and as the frequency and extent of drought or freezing vary strongly among habitats and are predicted to change with climate change, it raises questions about how organisms cope with, and survive, environmental stress. Using Daphnia magna as a model system, we tested the ability of resting stages from different populations to cope with stress during diapause. The combination of elevated temperatures and wet conditions during diapause shows to prevent hatching altogether. In contrast, hatching is relatively higher after a dry and warm diapause, but declines with rising temperatures, while time to hatch increases. Resting stages produced by populations from summer-dry habitats perform slightly, but consistently, better at higher temperatures and dryness, supporting the local adaptation hypothesis. A higher trehalose content in resting eggs from summer-dry habitat might explain such pattern. Considering that temperatures and summer droughts are projected to increase in upcoming years, it is fundamental to know how resting stages resist stressful conditions so as to predict and protect the ecological functioning of freshwater ecosystems.

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Insect diapause: from a rich history to an exciting future

Denlinger

2023

Journal of Experimental Biology

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Diapause, a stage-specific developmental arrest, is widely exploited by insects to bridge unfavorable seasons. Considerable progress has been made in understanding the ecology, physiology and evolutionary implications of insect diapause, yet intriguing questions remain. A more complete understanding of diapause processes on Earth requires a better geographic spread of investigations, including more work in the tropics and at high latitudes. Questions surrounding energy management and trade-offs between diapause and non-diapause remain understudied. We know little about how maternal effects direct the diapause response, and regulators of prolonged diapause are also poorly understood. Numerous factors that were recently linked to diapause are still waiting to be placed in the regulatory network leading from photoreception to engagement of the diapause program. These factors include epigenetic processes and small noncoding RNAs, and emerging data also suggest a role for the microbiome in diapause regulation. Another intriguing feature of diapause is the complexity of the response, resulting in a diverse suite of responses that comprise the diapause syndrome. Select transcription factors likely serve as master switches turning on these diverse responses, but we are far from understanding the full complexity. The richness of species displaying diapause offers a platform for seeking common components of a ‘diapause toolbox’. Across latitudes, during invasion events and in a changing climate, diapause offers grand opportunities to probe evolutionary change and speciation. At a practical level, diapause responses can be manipulated for insect control and long-term storage. Diapausing insects also contain a treasure trove of pharmacological compounds and offer promising models for human health.

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Fitness cost of Rhagoletis cerasi (Diptera: Tephritidae) adults emerged from pupae with different dormancy regimes: the case of prolonged chilling

Cited by 4 publications

References 37 publications

Differential Cold Tolerance on Immature Stages of Geographically Divergent Ceratitis capitata Populations

Differential Cold Tolerance on Immature Stages of Geographically Divergent Ceratitis capitata Populations

The limits of stress-tolerance for zooplankton resting stages in freshwater ponds

Insect diapause: from a rich history to an exciting future

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