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Showing 1 to 20 of 28 for “"Gasterosteus aculeatus"”.
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Cognitive variation in threespined stickleback (Gasterosteus aculeatus)
Cognition encompasses important mechanisms with which animals are able to adjust their behavior in response to environmental cues. These cognitive processes play a clear role in many fitness-related behaviors such as foraging, predator avoidance, and courtship. Thus, how these processes have …
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Conspicuous female ornamentation and male mate preference of Threespine Sticklebacks (Gasterosteus aculeatus)
… coloration in some threespine stickleback (Gasterosteus aculeatus) populations. Although female sticklebacks often exhibit a preference for red male throat coloration, the possibility of sexual selection on females has been little studied. Moreover, in those species in which female ornaments …
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The genetic basis of behavioral divergence in three-spined stickleback (Gasterosteus aculeatus)
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
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Plasticity of trait divergence in threespine stickleback (Gasterosteus aculeatus) from Lake Mývatn, Iceland
… are important prey for threespine stickleback (Gasterosteus aculeatus). As adaptive divergence in response to natural selection is frequently related to diet and/or habitat use, the spatial and temporal variation in prey type and abundance in lake Mývatn may facilitate resource-mediated …
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Relationships between phenotype, diet, and individual specialization of threespine stickleback (Gasterosteus aculeatus) in Lake Mývatn, Iceland
… temporal dynamics. The threespine stickleback (Gasterosteus aculeatus) population of the lake has been monitored for decades. Within the population is high gene flow, the phenotype is variable, the population fluctuates in size across years, and variation can be seen in diet. Stickleback are …
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Centromere identification and inactivation on a neo-Y chromosome fusion in threespine stickleback fish (Gasterosteus aculeatus)
… fixed in Japan Sea threespine stickleback fish (Gasterosteus nipponicus). In order to characterize the Japan Sea neo-Y chromosome, I first needed to identify the threespine stickleback centromeric DNA sequence. Centromere sequences exist as gaps in many genome assemblies due to their repetitive …
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Using parasite communities to discriminate between sympatric morphs of threespine sticklebacks (Gasterosteus aculeatus) in lake Þingvallavatn, Iceland
… speciation. The threespine stickleback (Gasterosteus aculeatus) is a good example of this phenomenon, where different morphs exhibit morphological variations that reflect environmental factors like predation pressure and diet. This study explores the potential of parasites as indicators …
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Local adaptation to parasites and selection on major histocompatibility genes in ecologically divergent populations of three-spine stickleback (Gasterosteus aculeatus)
… variable populations of threespine stickleback (Gasterosteus aculeatus). Within populations infection appeared to reflect morphology/diet based exposure differences among individuals. Among populations, however, these patterns were absent or reversed, consistent with the evolution of local …
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Divergence of Threespine Stickleback That Differ in Nuptial Coloration
… and black, of the threespine stickleback fish (Gasterosteus aculeatus) from the northwest United States, in which a shift from red to black nuptial coloration occurred in several locations following glacial retreat. We measured phenotypic variation in a suite of traits and used next generation …
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Variation in shoaling behavior in lake Mývatn threespine stickleback in relation to temperature and origin
… divergence. The threespine stickleback (Gasterosteus aculeatus) in Lake Mývatn is an ideal candidate to study such local adaptations. Threespine stickleback diverge in their morphology and physiology across the lake, partly in relation to habitat diversity, e.g. in temperature. However, …
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Mothers transfer information via eggs: effect of mothers' experience with predators on offspring
… behavior of juvenile threespined sticklebacks (Gasterosteus aculeatus). Exposure to a predator during oogenesis caused females to produce larger eggs and heavier clutches, but there was no effect on the number of eggs per clutch. The concentration of cortisol was higher in experimental eggs than …
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Modelling and Analysis of Individual Animal Movement
… by considering the movement of stickleback fish (Gasterosteus aculeatus)across three differing experimental environments.
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Fishing For The Evolutionary Bases Of Female Ornamentation
… trait—in the threespine stickleback fish (Gasterosteus aculeatus), to test whether the evolution of the female trait might be attributed to adaptive or nonadaptive mechanisms. My results indicate that while male-typical throat color in females is associated with some components of fitness, …
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Ecological consequences of genetically-based thermal traits in fishes
… physiological and behavioural thermal traits in Gasterosteus aculeatus across generations and populations. I also show that the thermal tolerance limits of freshwater populations of G. aculeatus are closer to observed thermal extremes in their natural environments than their marine counterparts. …
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Neurogenomic dynamics following social interactions in male threespined sticklebacks
… interactions in male threespined sticklebacks (Gasterosteus aculeatus), a small fish famous for their rich behavioral repertoire. In chapter one I provided the detailed overview of the research included in this dissertation. The second chapter tested the hypothesis that there are conserved …
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Animal personality and the social context: the role of boldness and sociability variation in schooling fish
… this link, using three-spined stickleback fish (Gasterosteus aculeatus) as my model system. I begin by showing that fish vary consistently in their boldness and sociability, with only boldness being positively linked to food intake for fish at rest. This finding provides support for evolutionary …
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The individual and collective behavior of social organisms across environments
… of two organisms; three-spined stickleback fish (Gasterosteus aculeatus) and odorous house ants (Tapinoma sessile). Both of these species are group-living, exhibit considerable variation in behavior at both the individual and collective level, and have significant population level divergence that …
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Behavioral type - environment correlations in three-spined stickleback
… processes in the three-spined stickleback (Gasterosteus aculeatus). In the first chapter I documented two such behavioral type-environment correlations, one between boldness and social environment and the other between exploratory behavior and habitat type. In the second chapter I test the …
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