Behavioral adjustments of a pipefish to bacterial Vibrio challenge

Landis, Susanne H.; Sundin, Josefin; Rosenqvist, Gunilla; Roth, Olivia

doi:10.1007/s00265-012-1395-3

Cited by 9 publications

(11 citation statements)

References 43 publications

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“…) and susceptibility to infection (Landis et al . ). Therefore, in addition to physiology‐related genes, genes related to reproductive behaviour and immune response are likely candidates for adaptation to water temperature in pipefish.…”

Section: Discussionmentioning

confidence: 97%

Population genomics reveals multiple drivers of population differentiation in a sex‐role‐reversed pipefish

2016

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A major goal of molecular ecology is to identify the causes of genetic and phenotypic differentiation among populations. Population genomics is suitably poised to tackle these key questions by diagnosing the evolutionary mechanisms driving divergence in nature. Here, we set out to investigate the evolutionary processes underlying population differentiation in the Gulf pipefish, Syngnathus scovelli. We sampled approximately 50 fish from each of 12 populations distributed from the Gulf coast of Texas to the Atlantic coast of Florida and performed restriction-site-associated DNA sequencing to identify SNPs throughout the genome. After imposing quality and stringency filters, we selected a panel of 6348 SNPs present in all 12 populations, 1753 of which were not physically linked. We identified a genome-wide pattern of isolation by distance, in addition to a more substantial genetic break separating populations in the Gulf of Mexico from those in the Atlantic. We also used several divergence outlier approaches and tests for genotype-environment correlations to identify 400 SNPs putatively involved in local adaptation. Patterns of phenotypic differentiation and variation diverged from the overall genomic pattern, suggesting that selection, phenotypic plasticity or demographic factors may be shaping phenotypes in distinct populations. Overall, our results suggest that population divergence is driven by a variety of factors in S. scovelli, including neutral processes and selection on multiple traits.

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Section: Discussionmentioning

confidence: 97%

Population genomics reveals multiple drivers of population differentiation in a sex‐role‐reversed pipefish

2016

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“…That immune‐challenged pregnant pipefish males actively avoid warm waters (Landis, Sundin, et al. ) could potentially underline the importance of TGIP.…”

Section: Discussionmentioning

confidence: 99%

Trans‐generational plasticity in response to immune challenge is constrained by heat stress

Roth

Landis

2017

Evolutionary Applications

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Trans‐generational plasticity (TGP) is the adjustment of phenotypes to changing habitat conditions that persist longer than the individual lifetime. Fitness benefits (adaptive TGP) are expected upon matching parent–offspring environments. In a global change scenario, several performance‐related environmental factors are changing simultaneously. This lowers the predictability of offspring environmental conditions, potentially hampering the benefits of TGP. For the first time, we here explore how the combination of an abiotic and a biotic environmental factor in the parental generation plays out as trans‐generational effect in the offspring. We fully reciprocally exposed the parental generation of the pipefish Syngnathus typhle to an immune challenge and elevated temperatures simulating a naturally occurring heatwave. Upon mating and male pregnancy, offspring were kept in ambient or elevated temperature regimes combined with a heat‐killed bacterial epitope treatment. Differential gene expression (immune genes and DNA‐ and histone‐modification genes) suggests that the combined change of an abiotic and a biotic factor in the parental generation had interactive effects on offspring performance, the temperature effect dominated over the immune challenge impact. The benefits of certain parental environmental conditions on offspring performance did not sum up when abiotic and biotic factors were changed simultaneously supporting that available resources that can be allocated to phenotypic trans‐generational effects are limited. Temperature is the master regulator of trans‐generational phenotypic plasticity, which potentially implies a conflict in the allocation of resources towards several environmental factors. This asks for a reassessment of TGP as a short‐term option to buffer environmental variation in the light of climate change.

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“…Behavioural responses can reduce expression of physiological responses through thermoregulation (Angilletta ), or increase them because of competing pressures such as disease infection (Landis et al. ). Multiple stressors might act additively or synergistically (e.g.…”

Section: Proximate Drivers and Traits Likely To Respond To Climate Chmentioning

confidence: 99%

Plastic and evolutionary responses to climate change in fish

Crozier

Hutchings

2014

Evolutionary Applications

389

329

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The physical and ecological ‘fingerprints’ of anthropogenic climate change over the past century are now well documented in many environments and taxa. We reviewed the evidence for phenotypic responses to recent climate change in fish. Changes in the timing of migration and reproduction, age at maturity, age at juvenile migration, growth, survival and fecundity were associated primarily with changes in temperature. Although these traits can evolve rapidly, only two studies attributed phenotypic changes formally to evolutionary mechanisms. The correlation-based methods most frequently employed point largely to ‘fine-grained’ population responses to environmental variability (i.e. rapid phenotypic changes relative to generation time), consistent with plastic mechanisms. Ultimately, many species will likely adapt to long-term warming trends overlaid on natural climate oscillations. Considering the strong plasticity in all traits studied, we recommend development and expanded use of methods capable of detecting evolutionary change, such as the long term study of selection coefficients and temporal shifts in reaction norms, and increased attention to forecasting adaptive change in response to the synergistic interactions of the multiple selection pressures likely to be associated with climate change.

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Behavioral adjustments of a pipefish to bacterial Vibrio challenge

Cited by 9 publications

References 43 publications

Population genomics reveals multiple drivers of population differentiation in a sex‐role‐reversed pipefish

Population genomics reveals multiple drivers of population differentiation in a sex‐role‐reversed pipefish

Trans‐generational plasticity in response to immune challenge is constrained by heat stress

Plastic and evolutionary responses to climate change in fish

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