Variation among genotypes in responses to increasing temperature in a marine parasite: evolutionary potential in the face of global warming?

Berkhout, Boris W.; Lloyd, Melanie M.; Poulin, Robert; Studer, Anja S

doi:10.1016/j.ijpara.2014.07.002

Cited by 25 publications

(19 citation statements)

References 42 publications

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“…However, while most studies have documented strong positive effects of elevated temperatures on mean cercarial output ( Evans 1985 ; Shostak and Esch 1990 ; Paull et al 2015 ), these effects are not universal. Some species appear to show reversed trends ( Koprivnikar and Poulin 2009 ) and there is also evidence that such effects may sometimes be temporary ( Paull et al 2015 ), and variable between genotypes of a single parasite species ( Berkhout et al 2014 ). Additionally, any temporary increase in the release of cercariae under elevated temperatures could be offset by a shorter suitable season, possibly even leading to lower overall output of cercariae ( de Montaudouin et al 2015 ).…”

Section: Implications Of Changing Thermal Environments For Host–parasmentioning

confidence: 99%

“…Predicting the consequences of these for the transmission of multi-host parasites in aquatic ecosystems will be enormously challenging because of the many ways in which temperature changes the biology of hosts, parasites, and the interactions between them. Also, the mean effects of temperature on individuals within a population might not reflect consistent underlying variation in host or parasite populations ( Berkhout et al 2014 ). This variation could lead to the selection of certain genotypes within populations.…”

Section: Conclusion Predictions and Directions For Future Researchmentioning

confidence: 99%

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Thermal Change and the Dynamics of Multi-Host Parasite Life Cycles in Aquatic Ecosystems

Barber

Berkhout

Ismail

2016

Integr. Comp. Biol.

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Altered thermal regimes associated with climate change are impacting significantly on the physical, chemical, and biological characteristics of the Earth’s natural ecosystems, with important implications for the biology of aquatic organisms. As well as impacting the biology of individual species, changing thermal regimes have the capacity to mediate ecological interactions between species, and the potential for climate change to impact host–parasite interactions in aquatic ecosystems is now well recognized. Predicting what will happen to the prevalence and intensity of infection of parasites with multiple hosts in their life cycles is especially challenging because the addition of each additional host dramatically increases the potential permutations of response. In this short review, we provide an overview of the diverse routes by which altered thermal regimes can impact the dynamics of multi-host parasite life cycles in aquatic ecosystems. In addition, we examine how experimentally amenable host–parasite systems are being used to determine the consequences of changing environmental temperatures for these different types of mechanism. Our overarching aim is to examine the potential of changing thermal regimes to alter not only the biology of hosts and parasites, but also the biology of interactions between hosts and parasites. We also hope to illustrate the complexity that is likely to be involved in making predictions about the dynamics of infection by multi-host parasites in thermally challenged aquatic ecosystems.

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Section: Implications Of Changing Thermal Environments For Host–parasmentioning

confidence: 99%

Section: Conclusion Predictions and Directions For Future Researchmentioning

confidence: 99%

Thermal Change and the Dynamics of Multi-Host Parasite Life Cycles in Aquatic Ecosystems

Barber

Berkhout

Ismail

2016

Integr. Comp. Biol.

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“…Critical environmental conditions can affect biodiversity and species distribution (Menendez et al, 2006; Barrett & Schluter, 2008; Jump, Marchant & Penuelas, 2009; Berkhout et al, 2014). Genetic diversity plays a decisive role in evolutionary history and future evolutionary directions of taxa (May, 1994; Forest et al, 2007; Jump, Marchant & Penuelas, 2009).…”

Section: Introductionmentioning

confidence: 99%

The impact of one-decade ecological disturbance on genetic changes: a study on the brine shrimpArtemia urmianafrom Urmia Lake, Iran

Asem

Eimanifar²,

Stappen

et al. 2019

PeerJ

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Urmia Lake, the largest natural habitat of the brine shrimp Artemia urmiana, has progressively desiccated over the last two decades, resulting in a loss of 80% of its surface area and producing thousands of hectares of arid salty land. This ecological crisis has seriously affected the lake’s native biodiversity. Artemia urmiana has lost more than 90% of its population during the decade from 1994 (rainy period) to 2004 (drought period) due to salinity increasing to saturation levels (∼300 g/l). We studied the influence of this ecological crisis on the genetic diversity of A. urmiana in Urmia Lake, based on one cyst collections in 1994 and 2004. AMOVA analysis on ISSR data demonstrated a 21% genetic variation and there was a 5.5% reduction of polymorphic loci between samples. PCoA showed that 77.42% and 68.75% of specimens clustered separately in 1994 and 2004, respectively. Our analyses of four marker genes revealed different genetic diversity patterns with a decrease of diversity at ITS1 and an increase for Na+/K+ ATPase. There was no notable difference in genetic variation detected for COI and 16S genes between the two periods. However, they represented distinctly different haplotypes. ITS1 and COI followed a population expansion model, whereas Na+/K+ ATPase and 16S were under demographic equilibrium without selective pressure in the 1994 samples. Neutrality tests confirmed the excess of rare historical and recent mutations present in COI and ITS1 in both samples. It is evident that a short-term ecological disturbance has impacted the genetic diversity and structure of A. urmiana.

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“…Maritrema novaezealandensis [147], the extinction of local populations of the angiosperm Fagus sylvatica still occurred at the southern range margin despite strong signals of genetic adaptation in this species to climate warming [148,149]. This variation in responses at the species level makes it virtually impossible to predict the effects of climate change on trophic interactions, although available evidence suggests that there will be many more losers than winners [6] and as a result we can expect multitrophic (ecosystem) interactions to be simplified (Fig.…”

Section: Climate Warming In the Context Of Larger Ecological Scalesmentioning

confidence: 99%

Climate Change, Range Shifts and Multitrophic Interactions

Harvey¹,

Malcicka²

2015

Biodiversity in Ecosystems - Linking Structure and Function

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Variation among genotypes in responses to increasing temperature in a marine parasite: evolutionary potential in the face of global warming?

Cited by 25 publications

References 42 publications

Thermal Change and the Dynamics of Multi-Host Parasite Life Cycles in Aquatic Ecosystems

Thermal Change and the Dynamics of Multi-Host Parasite Life Cycles in Aquatic Ecosystems

The impact of one-decade ecological disturbance on genetic changes: a study on the brine shrimpArtemia urmianafrom Urmia Lake, Iran

Climate Change, Range Shifts and Multitrophic Interactions

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