Interplay between habitat fragmentation and climate change: inbreeding affects the response to thermal stress in Drosophila melanogaster

Joubert, D.; Bijlsma, Rob G.

doi:10.3354/cr00883

Cited by 26 publications

(29 citation statements)

References 81 publications

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“…temperature, humidity, etc. (Chown et al 2011); (2) changes in flora and fauna composition (Lavergne et al 2010, Sheldon et al 2011 as a result of an improvement of public policies to ward park preservation; and climatic changes, such as global warming, affecting the distribution of species along the elevation gradient and, consequently, the community structure (driven by competition and predation); (3) changes in the genetic content of each inversion; (4) modifications of the demographic structure of the population with a possible effect of ge ne tic drift (Stamenkovic-Radak et al 2008, Joubert & Bijlsma 2010, Hoffmann & Sgrò 2011.…”

Section: Discussionmentioning

confidence: 99%

Unexpected long-term changes in chromosome inversion frequencies in a Neotropical Drosophila species

2012

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Several long-term studies on Drosophila chromosome inversion polymorphisms have shown that inversions can be a valuable tool to monitor rapid genetic shifts with climate change. However, so far, no study has assessed the effects of climate change in populations of Neotropical Drosophila species. After more than 2 decades, new samples were collected from the Parque Nacional do Itatiaia, Rio de Janeiro, to assess any changes in inversion frequencies and to detect possible global warming effects on the inversion polymorphism of the second chromosome of D. mediopunctata. Our results show unexpected simultaneous changes in inversion frequencies associated with climate change. Perhaps climatic variables other than temperature underlying the process caused such change, although potential genetic drift effects or demographic factors cannot be excluded. Further studies assessing population genetic structure may help clarify the changes observed.

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Section: Discussionmentioning

confidence: 99%

Unexpected long-term changes in chromosome inversion frequencies in a Neotropical Drosophila species

2012

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“…de Jong 1995, Ghalambor et al 2007, Joubert & Bijlsma 2010. Most of the information available on reaction norms to climate, and on the role of phenotypic plasticity in the response to climate change, comes from temperate organisms (Réale et al 2003, Yeh & Price 2004, Charmantier et al 2008, Zhao & Wang 2009).…”

Section: Future Research and Conclusionmentioning

confidence: 99%

“…in the Galápagos, Madagascar and Australia) or highly fragmented ecosystems where populations are trapped in relict fragments of suitable habitat and accumulate genetic handicaps (e.g. low genetic variation, drift and inbreeding depression; Hannah et al 2008, Hendry et al 2008, Joubert & Bijlsma 2010. Actually, extreme climatic events are expected to become one of the major causes of species extinction during this century (Stenseth et al 2002, Walther et al 2002, Thomas et al 2004, Foden et al 2008, Chown et al 2010.…”

Section: Introductionmentioning

confidence: 99%

Adaptive phenotypic plasticity and resilience of vertebrates to increasing climatic unpredictability

Canale¹,

Henry²

2010

Clim. Res.

134

115

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As ecosystems undergo global changes, there is increasing interest in understanding how organisms respond to changing environments. Recent evidence drawn from available vertebrate studies suggests that most of the phenotypic responses to climate change would be due to plasticity. We hypothesize that organisms that have evolved in unpredictable environments inform us about the mechanisms of phenotypic plasticity which provide an adaptive response to climate instability. As climate changes increase climatic hazards, these resilience mechanisms are expected to spread within species, populations and communities. We review studies that have demonstrated the importance of phenotypic plasticity in different life-history traits in overcoming climate uncertainty. We focus on organisms from unstable, recurrently energetically restrictive environments which possess a variety of morphological, physiological and/or behavioural adaptations to climate-driven selective pressures. First, we treat plastic morphological changes in response to fluctuating food availability. Adjustment of morphometric traits and/or organ size to energy supply would be essential in harsh environments. Second, we review the role of flexible energy-saving mechanisms, such as daily torpor, hibernation and energy storage, in overcoming climate-driven energetic shortages. Lastly, we address the role of plastic modulation of reproduction in fine-tuning the energy allocation to offspring production according to environmental conditions, with an emphasis on opportunistic breeding. Overall, we predict that species (or genotypes) possessing these efficient physiological mechanisms of resilience to unpredictable water and food fluctuations will be selectively advantaged in the face of increasing climatic instability.

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“…Additionally, viability (larva-to-pupa, larva-to-adult, and pupa-to-adult) was measured as the ratio of the total numbers of pupae and emerged flies to the initial larval density of vials. (Joubert and Bijlsma, 2010) (Figure 1). …”

Section: Breeding Design Developmental Time and Viabilitymentioning

confidence: 99%

The effects of larval diet restriction on developmental time, preadult survival, and wing length in Drosophila melanogaster

Güler¹,

Ayhan²,

Koşukçu³

et al. 2015

Turk J Zool

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IntroductionStudies on different life history trait strategies under stressful environments are crucial in understanding how evolution shapes an organism under extreme conditions (Roff, 1992;Stearns, 1992;Flatt, 2011). Effects of dietary restriction (DR) as an environmental stress on life history traits have been assessed over the past 80 years, since the first positive correlation shown by McCay et al. (1935) between DR and median life span. Nutritional manipulation is one of the most frequently used ways to expose the effects of food as an environmental variable on the life history traits of organisms (Onder and Yilmaz, 2009). Subsequent studies with model organisms have indicated that life history traits change with respect to decreasing food medium (Mair, 2005;Speakman and Sharon, 2011).The amount and quality of nutrients consumed by organisms have a particular impact on life history traits, including developmental time, body size, and survival. Exposure to stress during developmental periods is significant for all organisms, especially for holometabol insects; moreover, instability in developmental periods can affect many adult characters. A nutrition intake decrease in the developmental stage extends developmental time and reduces adult body and organ size (Shingleton et al., 2008). Roff modeled the interaction between growth, developmental time, and body size in 2000 (Roff, 2000). Depending on the model, all variables have close relations with each other and are also affected by environmental stress. Variations in the quantity or quality of an acceptable diet can have profound effects on insect development (Chapman, 1998).Developmental stage stability is highly related to an organism's fitness, which critically depends on growth and development, as in the model of Roff (2000). However,

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Interplay between habitat fragmentation and climate change: inbreeding affects the response to thermal stress in Drosophila melanogaster

Cited by 26 publications

References 81 publications

Unexpected long-term changes in chromosome inversion frequencies in a Neotropical Drosophila species

Unexpected long-term changes in chromosome inversion frequencies in a Neotropical Drosophila species

Adaptive phenotypic plasticity and resilience of vertebrates to increasing climatic unpredictability

The effects of larval diet restriction on developmental time, preadult survival, and wing length in Drosophila melanogaster

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