Oviposition site selection: unresponsiveness ofDrosophilato cues of potential thermal stress

Feder, Martin E.; Blair, Nathaniel T.; Figueras, Hunter

doi:10.1006/anbe.1996.0333

Cited by 47 publications

(32 citation statements)

References 14 publications

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“…Circles represent individual fruit; small squares represent centroids of patches and gaps; fine square outline around groups of circles represents fruit that were shaded by 80% shade netting, with the remainder representing fruit exposed to the sun Oecologia (2006) 149:245-255 251 aggregated patterns of emergence, which were driven largely by the treatment, may have been a consequence of egg clustering, female choice, patterns of mortality or some combination thereof (Atkinson and Shorrocks 1984;Heard and Remer 1997;Feder and Krebs 1998;Wertheim et al 2002). In the field, ovipositing female drosophilids avoid fruit if it is warm at the time of oviposition (Feder et al 1997). However, they are unable to distinguish between previously heated and unheated fruit under lower temperature conditions (Feder et al 1997;Feder and Krebs 1998).…”

Section: Discussionmentioning

confidence: 99%

Body size patterns in Drosophila inhabiting a mesocosm: interactive effects of spatial variation in temperature and abundance

et al. 2006

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Body size is a major component of fitness. However, the relative contributions of different factors to optimal size, and the determinants of spatial and temporal variation in size, have not been fully established empirically. Here, we use a mesocosm of a Drosophilidae assemblage inhabiting decaying nectarines to investigate the influence of spatial variation in temperature on adult body size in Drosophila simulans Sturtevant. Two treatments were established; one in the sun where developing larvae were exposed to high temperatures and the other in the shade where temperature conditions were milder. The simple developmental effects of temperature differences (i.e. larger flies are likely to emerge from cooler environments), or the simple effects of stressful temperatures (i.e. high temperatures yield wing abnormalities and smaller flies), were overridden by interactive effects between temperature and larval density. Emergences were lower in the sun than shade, probably as a result of temperature-induced mortality. However, flies attained the same final sizes in the shade and sun. In addition, abnormally winged flies were clustered in the shaded treatments. In the shade treatments, where emergences were higher than in the sun, stressful conditions as a result of high larval density likely resulted in wing abnormalities and small size. Consequently, there was little spatial variation in size across the mesocosm, but substantial spatial variation in abundance. Under natural conditions both mortality and non-lethal effects of temperature and/or crowding are likely to play a role in the evolution of body size.

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Section: Discussionmentioning

confidence: 99%

Body size patterns in Drosophila inhabiting a mesocosm: interactive effects of spatial variation in temperature and abundance

et al. 2006

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“…eggs) can have a major effect on subsequent survival, development rates, adult size and morphology, physiological capacities, and even gender [22,127,[160][161][162][163]. Although eggs cannot move, the mother's choice of the oviposition site may provide some buffering ( [127,161,[164][165][166], but see [167]). For example, a female can control the thermal conditions her eggs will experience simply by altering the depth of her nest or its shading [127,161,168,169], by changing season of laying [170,171] or by using buffered microhabitats such as termite mounds [172] or transpiring leaves [166].…”

Section: Physiological Sensitivity (A) Physiological Traits Dictatingmentioning

confidence: 99%

Predicting organismal vulnerability to climate warming: roles of behaviour, physiology and adaptation

Huey

Kearney

Krockenberger

et al. 2012

Phil. Trans. R. Soc. B

1,183

1,249

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A recently developed integrative framework proposes that the vulnerability of a species to environmental change depends on the species' exposure and sensitivity to environmental change, its resilience to perturbations and its potential to adapt to change. These vulnerability criteria require behavioural, physiological and genetic data. With this information in hand, biologists can predict organisms most at risk from environmental change. Biologists and managers can then target organisms and habitats most at risk. Unfortunately, the required data (e.g. optimal physiological temperatures) are rarely available. Here, we evaluate the reliability of potential proxies (e.g. critical temperatures) that are often available for some groups. Several proxies for ectotherms are promising, but analogous ones for endotherms are lacking. We also develop a simple graphical model of how behavioural thermoregulation, acclimation and adaptation may interact to influence vulnerability over time. After considering this model together with the proxies available for physiological sensitivity to climate change, we conclude that ectotherms sharing vulnerability traits seem concentrated in lowland tropical forests. Their vulnerability may be exacerbated by negative biotic interactions. Whether tropical forest (or other) species can adapt to warming environments is unclear, as genetic and selective data are scant. Nevertheless, the prospects for tropical forest ectotherms appear grim.

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“…First, is host behaviour in terms of selecting thermal environments ever an adaptation to symbionts? Many organisms exhibit behavioural thermoregulation (Feder et al, 1997;Anderson et al, 2013). The possibility is that species carrying beneficial symbionts will be selected for temperature optima that cosset their symbionts, and may indeed be constrained in using behavioural fever as a means of curing pathogen infections.…”

Section: A Generalised View Of Thermal Impacts On Facultative Heritabmentioning

confidence: 99%

Heritable symbionts in a world of varying temperature

et al. 2016

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Heritable microbes represent an important component of the biology, ecology and evolution of many plants, animals and fungi, acting as both parasites and partners. In this review, we examine how heritable symbiont-host interactions may alter host thermal tolerance, and how the dynamics of these interactions may more generally be altered by thermal environment. Obligate symbionts, those required by their host, are considered to represent a thermally sensitive weak point for their host, associated with accumulation of deleterious mutations. As such, these symbionts may represent an important determinant of host thermal envelope and spatial distribution. We then examine the varied relationship between thermal environment and the frequency of facultative symbionts that provide ecologically contingent benefits or act as parasites. We note that some facultative symbionts directly alter host thermotolerance. We outline how thermal environment will alter the benefits/costs of infection more widely, and additionally modulate vertical transmission efficiency. Multiple patterns are observed, with symbionts being cold sensitive in some species and heat sensitive in others, with varying and non-coincident thresholds at which phenotype and transmission are ablated. Nevertheless, it is clear that studies aiming to predict ecological and evolutionary dynamics of symbiont-host interactions need to examine the interaction across a range of thermal environments. Finally, we discuss the importance of thermal sensitivity in predicting the success/failure of symbionts to spread into novel species following natural/engineered introduction.

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Oviposition site selection: unresponsiveness ofDrosophilato cues of potential thermal stress

Cited by 47 publications

References 14 publications

Body size patterns in Drosophila inhabiting a mesocosm: interactive effects of spatial variation in temperature and abundance

Body size patterns in Drosophila inhabiting a mesocosm: interactive effects of spatial variation in temperature and abundance

Predicting organismal vulnerability to climate warming: roles of behaviour, physiology and adaptation

Heritable symbionts in a world of varying temperature

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