Jeffry L. Dudycha
University of South Carolina
40 Papers
338 Citations
Jeffry L. Dudycha is an academic researcher from University of South Carolina. The author has contributed to research in topics: Daphnia pulex & Biology. The author has an hindex of 16, co-authored 35 publications. Previous affiliations of Jeffry L. Dudycha include University of Virginia & Michigan State University.
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Papers
Ameiotic recombination in asexual lineages of Daphnia
TL;DR: The rate of loss of nucleotide heterozygosity by ameiotic recombination is substantially greater than the rate of introduction of new variation by mutation, suggesting that the evolutionary potential of asexual diploid species is not only a matter of mutation accumulation and reduced efficiency of selection but also underscores the limited utility of using neutral allelic divergence as an indicator of ancient asexuality.
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Natural genetic variation of life span, reproduction, and juvenile growth in daphnia.
TL;DR: Test the theory of senescence with natural populations of the Daphnia pulex‐pulicaria species complex, a group of freshwater zooplankton that spans an environmental gradient of habitat permanence, and observes negative genetic correlations between r and indices of life‐history timing, suggesting trade‐offs between early‐ and late‐life performance.
114
Longitudinal analysis of Plantago: Age-by-environment interactions reveal aging
TL;DR: Whether a plant species, Plantago lanceolata, shows demographic aging in its natural environment is determined to determine and environmental influences on mortality are shown as evidenced by synchronous changes in mortality across four cohorts over time.
63
Ecological speciation in a cyclic parthenogen: Sexual capability of experimental hybrids between Daphnia pulex and Daphnia pulicaria
TL;DR: It is concluded that reproductive isolation between D. pulex and D. pulicaria is due to ecological separation, not genetic incompatibility, and there is no evidence that these taxa are reproductively incompatible.
58
Mortality dynamics of Daphnia in contrasting habitats and their role in ecological divergence
TL;DR: Demographic differences in the D. pulex-pulicaria complex suggest these taxa may be at the inception of ecological speciation, which suggests that ecological differences between the habitats are selectively maintaining trait differences despite the possibility for genetic exchange.
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