Cold tolerance and diapause within and across trophic levels: Endoparasitic wasps and their fly host have similar phenotypes

McIntyre, Trinity; Andaloori, Lalitya; Hood, Glen R.; Feder, Jeffrey L.; Hahn, Daniel A.; Ragland, Gregory J.; Toxopeus, Jantina

doi:10.1016/j.jinsphys.2023.104501

Cited by 11 publications

(17 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These temperatures are both lower than the typical lab 'winter' temperature (4°C) used in most R. pomonella work (Calvert et al, 2022;Dambroski and Feder, 2007;Dowle et al, 2020;Feder et al, 1997;McIntyre et al, 2023;Toxopeus et al, 2021), and our results indicate good chronic chill tolerance in R. pomonella collected from both host fruits.…”

Section: Rhagoletis Pomonella Chronic Cold Tolerance Is Highmentioning

confidence: 43%

“…Chill-susceptible species are not cold-tolerant and are often killed by short exposures to subzero temperatures, well above the temperature at which their body fluids freeze (Overgaard and MacMillan, 2017; Sinclair et al, 2015). Chronic cold tolerance refers to the ability to survive longer cold exposures, an important adaptation for tolerating long winters (McIntyre et al, 2023; Toxopeus et al, 2019). This is usually measured by determining the time that insects can survive at a specific low temperature.…”

Section: Introductionmentioning

confidence: 99%

“…The apple maggot is distributed across western and eastern Canada (except for Newfoundland), throughout 38 of 50 states in the USA, and in the northern and central regions of Mexico (Canadian Food Inspection Agency, 2012; Hood et al, 2013; Rull et al, 2009; Yee and Goughnour, 2006; Yee et al, 2013). Previous work on R. pomonella from Illinois and Michigan, USA has established that pupae are freeze-avoidant and survive acute exposures to temperatures above the SCP (c. −20°C; (McIntyre et al, 2023; Toxopeus et al, 2021). Rhagoletis pomonella pupae also generally survive prolonged (e.g., 4 months) exposures to mild chilling at 4 - 5°C, as long as they are in diapause (Dambroski and Feder, 2007; Feder et al, 1997; Toxopeus et al, 2021; Yee et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Conserved cold tolerance ofRhagoletisspecies from different host fruits, elevations in Colorado, USA

Lemay,

Moore,

Brown

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Understanding and characterizing how insects tolerate low temperatures is important for predicting their overwintering survival and subsequent geographic spread. This study characterized the cold tolerance of two members of theRhagoletisgenus in Colorado, U.S.A. Pupae were collected from infested fruit in late summer and early fall. For the first time, we show that the rosehip flyRhagoletis basiolais freeze-avoidant; overwintering pupae could supercool to temperatures as low as −26°C and survive. Interestingly, the temperature at which ice forms (supercooling point; SCP) did not vary betweenR. basiolaat high (c. 2900 m above sea level) and lower (c. 1650 m a.s.l.) elevations. We also report the apple maggotRhagoletis pomonellainfesting an unusual host fruit, the Dolgo crabapple, in close proximity to infested hawthorn trees.R. pomonellainfesting hawthorn fruits and crabapples had similar SCPs, and survived temperatures as low as −21°C. Pupae from both host fruits also survived prolonged exposure (2 weeks or more) to mild low temperatures (0 to −5°C). Further study into the mechanisms underlying the impressive and conserved cold tolerance ofR. pomonellaandR. basiolais an interesting avenue for future research.

show abstract

Section: Rhagoletis Pomonella Chronic Cold Tolerance Is Highmentioning

confidence: 43%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Conserved cold tolerance ofRhagoletisspecies from different host fruits, elevations in Colorado, USA

Lemay,

Moore,

Brown

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The relative order of eclosion of the wasps from earliest to latest was Uc, Dm, and Da. Moreover, like their fly hosts, all three species of parasitoid wasps are physiologically capable of forgoing diapause and entering direct adult development under prolonged periods of pre-winter heating in the laboratory (Hood, 2016;McIntyre et al, 2023). However, no apple or hawthorn parasitoid in the control or warm treatment eclosed before winter.…”

Section: Phenological Responses Of Parasitoidsmentioning

confidence: 99%

Simulated climate warming causes asymmetric responses in insect life‐history timing potentially disrupting a classic ecological speciation system

et al. 2023

Self Cite

View full text Add to dashboard Cite

Climate change may alter phenology within populations with cascading consequences for community interactions and on-going evolutionary processes. Here, we measured the response to climate warming in two sympatric, recently diverged (~170 years) populations of Rhagoletis pomonella flies specialized on different host fruits (hawthorn and apple) and their parasitoid wasp communities. We tested whether warmer temperatures affect dormancy regulation and its consequences for synchrony across trophic levels and temporal isolation between divergent populations. Under warmer temperatures, both fly populations developed earlier. However, warming significantly increased the proportion of maladaptive pre-winter development in apple, but not hawthorn, flies. Parasitoid phenology was less affected, potentially generating ecological asynchrony. Observed shifts in fly phenology under warming may decrease temporal isolation, potentially limiting on-going divergence. Our findings of complex sensitivity of life-history timing to changing temperatures predict that coming decades may see multifaceted ecological and evolutionary changes in temporal specialist communities.

show abstract

“…Chill-susceptible animals may behaviourally avoid low temperatures, for example by overwintering below the frost layer, as seen in the earthworm Lumbricus terrestris (nightcrawlers; Nuutinen and Butt 2009). Measuring survival under both short (e.g., 1 h) and prolonged (e.g., multiple days) exposures can provide additional insight into cold tolerance, especially if ecologically-relevant conditions are selected (McIntyre et al 2023;Lemay et al 2024).…”

Section: Introductionmentioning

confidence: 99%

Invasive adult jumping worms in Atlantic Canada are chill-susceptible

Adams,

Chettiar,

Clow

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

The jumping wormAmynthas tokioensisis invasive in North America, and it has been expanding its range northward in recent years. Because low temperatures typically restrict the geographic distribution of organisms, our goal was to characterize the cold tolerance physiology of adult jumping worms from a site in New Brunswick, Canada (c. 45°N), with the intent of better understanding their geographic range limits. Most of our experiments supported the conclusion that these worms are chill-susceptible: they die during or after exposure to relatively mild low temperatures. When gradually cooled, adult worms lost neuromuscular coordination at approximately 0 °C and froze at a mean temperature of -4.5 °C. They did not survive freezing and showed poor survival following 1 h exposures to 0 °C and subzero temperatures. At higher mild temperatures (5 °C), the worms could survive short (up to 6 h) but not long (e.g., 48 h) chilling durations. We attempted to induce improved cold tolerance via a five-week gradual acclimation to fall-like temperatures, but fall-acclimated worms showed poor survival during and after this acclimation. Acclimation also did not induce accumulation of glucose, a typical cryoprotectant in earthworms. We suggest thatA. tokioensiscan likely persist wherever the growing season is sufficiently warm and long enough for the adults to mature, reproduce, and lay cocoons prior to the chilling temperatures associated with early fall. Future work examining the cold tolerance of the overwintering cocoons will be important for fully understanding the northern range limits of these jumping worms.

show abstract

Cold tolerance and diapause within and across trophic levels: Endoparasitic wasps and their fly host have similar phenotypes

Cited by 11 publications

References 64 publications

Conserved cold tolerance ofRhagoletisspecies from different host fruits, elevations in Colorado, USA

Conserved cold tolerance ofRhagoletisspecies from different host fruits, elevations in Colorado, USA

Simulated climate warming causes asymmetric responses in insect life‐history timing potentially disrupting a classic ecological speciation system

Invasive adult jumping worms in Atlantic Canada are chill-susceptible

Contact Info

Product

Resources

About