Search results for "Gasterosteus aculeatus"

showing 2 items of 2 documents

Consistent isotopic differences between Schistocephalus spp. parasites and their stickleback hosts

2015

Published version available at http://dx.doi.org/10.3354/dao02893 Parasite−host systems show markedly variable patterns in isotopic fractionation: parasites can be either depleted or enriched in 15N and 13C as compared to their hosts. However, it remains unknown whether isotopic fractionation patterns are similar in comparable parasite−host systems from markedly different ecosystems. Results of this study show that large-sized Schistocephalus spp. endoparasites are consistently depleted in 15N (by on average −2.13 to −2.20‰) as compared to their nine-spined stickleback Pungitius pungitius and three-spined stickleback Gasterosteus aculeatus hosts. The differences between parasites and host f…

Stable isotope analysisVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Parasittologi: 484Pungitius pungitiusZoologyGasterosteusAquatic SciencePlatyhelminthFish DiseasesPungitiusAnimalsEcosystemGasterosteus aculeatusEcology Evolution Behavior and SystematicsIsotope analysisCarbon IsotopesVDP::Mathematics and natural science: 400::Zoology and botany: 480::Parasitology: 484biologyHost (biology)Stable isotope ratioFishesSticklebackTapewormbiology.organism_classificationCestode InfectionsEndoparasitePlatyhelminthsta1181Nutrient assimilationSchistocephalusDiseases of aquatic organisms
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Genome‐phenotype‐environment associations identify signatures of selection in a panmictic population of threespine stickleback

2023

Adaptive genetic divergence occurs when selection imposed by the environment causes the genomic component of the phenotype to differentiate. However, genomic signatures of natural selection are usually identified without information on which trait is responding to selection by which selective agent(s). Here we integrate whole-genome-sequencing with phenomics and measures of putative selective agents to assess the extent of adaptive divergence in threespine stickleback occupying the highly heterogeneous lake Mývatn, NE Iceland. We find negligible genome wide divergence, yet multiple traits (body size, gill raker structure and defence traits) were divergent along known ecological gradients (t…

adaptive divergencegenome scansgeenitDNArakenne (ominaisuudet)ominaisuudetperiytyvyyslandscape genomicsgasterosteus aculeatuspopulaatiogenetiikkaperimäfenotyyppigene flowenvironmental gradients
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