The Embryology of the Whitefish Coregonus Clupeaformis, (Mitchill). Part III, The Second Half of the Incubation Period
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Reduced sperm performance in backcross hybrids between species pairs of whitefish (Coregonus clupeaformis)
Previous work has demonstrated that genomic incompatibilities work together with ecologically divergent selection to promote and maintain reproductive isolation between incipient species (dwarf and normal) of lake whitefish (Coregonus clupeaformis (Mitchill, 1818)). Whitefish spawn in groups with external fertilization, which creates conditions for strong sperm competition. In this study, we as...
متن کاملGenetically based phenotype-environment association for swimming behavior in lake whitefish ecotypes (Coregonus clupeaformis Mitchill).
Studies of phenotype-environment associations in adaptive radiation have focused largely on morphological traits related to resource-based phenotypic differences. The genetic basis of adaptive behaviors implicated in population divergence remains poorly understood, as few studies have tested the hypothesis of behavioral phenotype-environment associations. We provide evidence of a phenotype-envi...
متن کاملPopulation bottlenecks: influence on mitochondrial DNA diversity and its effect in coregonine stock discrimination
This study was designed to test the hypothesis that anadromous populations of North American whitefish, Coregonus clupeuformis (Mitchill), believed to have suffered more intense population bottlenecks during past glaciation events, should reveal less mitochondrial DNA (mtDNA) variability and population-genetic structuring than anadromous populations of European whitefish, C. luvuretus (L.). C. ...
متن کاملTime-temperature Relations in the Incubation of the Whitefish, Coregonus Clupeaformis (mitchill)
1. Whitefish eggs incubated in aerated lake water at controlled tempera tures of 0 degrees , 0.5 degrees , 2 degrees , 4 degrees , 6 degrees , 8 degrees , 10 degrees , and 12 degrees C., failed to hatch at either 0 degrees or 12 degrees C. 0.6 per cent hatched alive at 10 degrees C., 72.67 per cent hatched alive at 0.5 degrees C., and an intermediate proportion hatched at intermediate temperatu...
متن کاملParallelism in gene transcription among sympatric lake whitefish (Coregonus clupeaformis Mitchill) ecotypes.
Abstract We tested the hypothesis that phenotypic parallelism between dwarf and normal whitefish ecotypes (Coregonus clupeaformis, Salmonidae) is accompanied by parallelism in gene transcription. The most striking phenotypic differences between these forms implied energetic metabolism and swimming activity. Therefore, we predicted that genes showing parallel expression should mainly belong to f...
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تاریخ انتشار 2017