Climate change and chromosomal inversions in Drosophila subobscura

Rezende, Enrico L.; Balanyà, Joan; Rodrı́guez-Trelles, Francisco; Rego, Carla; Fragata, Inês; Matos, Margarida; Serra, Luı́s; Santos, Mauro

doi:10.3354/cr00869

Cited by 60 publications

(75 citation statements)

References 97 publications

(82 reference statements)

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“…Montane tropical biota are believed to be particularly vulnerable to global warm ing effects (Sheldon et al 2011). Several longterm studies on Drosophila inversion polymorphisms have shown that changes in inversion frequencies can be a valuable tool to monitor rapid genetic shifts caused by climatic change (Stamenkovic-Radak et al 2008, Balanyà et al 2009, Levitan & Etges 2009; for review see: Rieseberg 2008 andRezende et al 2010). None of these studies, however, addresses the potential effects of climate change on a Drosophila Neotropical species.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

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

2012

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“…In particular, genetically determined variation in traits related to fitness along geographic gradients are thought to be the result of such adaptive evolution (e.g. Hoffmann et al 2002, Castañeda et al 2005, Collinge et al 2006, Rezende et al 2010. Because of the strong covariance between temperature and geographic clines, analyzing clinal variation has become a key element in investigating adaptive (thermal) evolution (Bubliy & Loeschcke 2005, Karl et al 2008a, 2009a, de Jong et al 2010.…”

Section: Dealing With Temperature Variationmentioning

confidence: 99%

Exploring plastic and genetic responses to temperature variation using copper butterflies

Fischer¹,

Karl²

2010

Clim. Res.

100

107

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Variable thermal environments experienced by most organisms warrant mechanisms to adjust the expression of phenotypic values to environmental needs. Here we explored short-(mainly developmental plasticity) and long-term effects (genetic differentiation across altitudes) of temperature variation using copper butterflies as model organisms. Lower compared to higher developmental temperatures yielded predictable variation by increasing development time, body size, total food consumption, the efficiency of converting digested food into body matter, and cold stress resistance, but decreasing daily food consumption, assimilation efficiency, body fat and protein content, weight loss at metamorphosis, the proportion of directly developing individuals, pupal melanisation and heat stress resistance. While variation in temperature stress resistance and developmental pathways is likely to reflect adaptive phenotypic plasticity, the reasons underlying variation in other traits are less clear. High-altitude populations showed increased development time, egg size, flight performance, wing and pupal melanisation and cold stress resistance, but decreased body fat content and heat stress resistance, compared to low-altitude populations. The differences seem to be mainly caused by thermal adaptation and seasonal time constraints. Cold stress resistance was related to variation at the phosphoglucose isomerase locus, and variation in heat stress resistance showed patterns similar to variation in the expression of stress-inducible heat shock proteins. High-altitude populations showed clearly reduced plasticity in heat stress tolerance, which may pose a substantial problem, given the rising temperatures at a global scale.

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“…Its potency as a selection agent is evident by various macro-ecological patterns explained by temperature, such as species distributions (Cossins andBowler 1987, Hoffmann andParsons 1991) or clinal variation within species (Rezende et al 2010). Effects of temperature are observed at all levels of phenotypic organization from molecules to behavior and life history of an organism.…”

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confidence: 99%

The Effect of Fluctuating Temperatures During Development on Fitness-Related Traits ofScatophaga stercoraria(Diptera: Scathophagidae)

et al. 2013

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Development of ectotherms is highly temperature dependent. Studies using variable thermal environments can improve ecological relevance of data because organisms naturally face day-to-day stochastic temperature fluctuations as well as seasonal changes in the amplitude of such daily fluctuations. The objective of this study was to investigate if, and to what extent, the use of constant temperatures is justified in studies of the model species, yellow dung fly, Scatophaga stercoraria (L.). We examined the effect of temperature fluctuation on the expression of several life history traits and the effect on subsequent adult longevity. We used two fluctuating temperature treatments with the same mean but different amplitudes (15/21°C, 12/24°C; 12/12 h), and three constant temperature treatments spanning the wide temperature range faced in the wild (12, 18, and 24°C). Large temperature fluctuation was mostly detrimental (lower juvenile survival, slower growth, smaller body size, and longer development), whereas moderate temperature fluctuation usually gave responses similar to the constant regime. When developing in fluctuating temperatures, adult longevity (no effect), body size (lower), and wing shape (narrower wings) deviated from the expectations based on the constant temperature reaction norms, presumably because of acclimation responses. Contrary to some studies no obvious beneficial effects of moderate temperature fluctuation were observed. Instead, yellow dung flies seem to canalize development in the face of temperature fluctuation up to a point when detrimental effects become unavoidable. The relatively greater effects of extreme constant developmental temperatures question their biological relevance in experiments.

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Climate change and chromosomal inversions in Drosophila subobscura

Cited by 60 publications

References 97 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

Exploring plastic and genetic responses to temperature variation using copper butterflies

The Effect of Fluctuating Temperatures During Development on Fitness-Related Traits ofScatophaga stercoraria(Diptera: Scathophagidae)

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