Population Genetic Structure of Two Mayflies (Ephemerella subvaria, Eurylophella verisimilis) in the Delaware River Drainage Basin

@article{Sweeney1986PopulationGS,
  title={Population Genetic Structure of Two Mayflies (Ephemerella subvaria, Eurylophella verisimilis) in the Delaware River Drainage Basin},
  author={Bernard W. Sweeney and David H. Funk and Robin L. Vannote},
  journal={Journal of the North American Benthological Society},
  year={1986},
  volume={5},
  pages={253 - 262}
}
The population genetic structure of two species of mayflies was studied using protein electrophoresis at eight locations in the headwater region of the Delaware River drainage basin. Study sites were located upstream and downstream from two large reservoirs. The working hypothesis was that little or no genetic differentiation occurs between conspecific populations within and among tributaries of the same drainage basin. A total of 24 and 28 loci were examined for Eurylophella verisimilis and… 
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References

SHOWING 1-10 OF 26 REFERENCES
Genetic Population Structure of Migratory Moths: The Velvetbean Caterpillar (Lepidoptera: Noctuidae)
TLDR
Small genetic distances among populations suggest high levels of gene flow (and migration) within this species relative to other organisms, and suggests that southcentral United States populations may originate in Mexico rather than from overwintering populations in southern Florida.
Temporal and microgeographic variation in allozyme frequencies in a natural population of Drosophila buzzatii.
TLDR
Heterogeneity in the F-statistic estimates indicates that natural selection is directly or indirectly affecting allele and genotype frequencies at some loci, however, microspatial heterogeneity probably is most important at the level of individual rots, and coupled with habitat selection.
GENETIC STRUCTURE OF TWO SPECIES OF WATERSTRIDERS (GERRIDAE: HEMIPTERA) WITH DIFFERING DEGREES OF WINGLESSNESS
  • A. Zera
  • Biology
    Evolution; international journal of organic evolution
  • 1981
TLDR
The Gerridae (Hemiptera: Insecta) is a worldwide family whose constituent species exhibit dramatic interand intraspecific variation in the degree of winglessness, and the dramatic differences in frequency of winged morphs pose intriguing questions regarding the evolutionary forces responsible for degree ofWinglessness and the relationship between degree of Winglessness and genetic structure of waterstrider species.
POPULATION STRUCTURE IN BLACK FLIES: ALLOZYMIC AND MORPHOLOGICAL ESTIMATES FOR PROSIMULIUM MIXTUM AND P. FUSCUM (DIPTERA: SIMULIIDAE)
TLDR
The data on distributions and genetic differentiation suggest that speciation in black flies does not occur through adaptive, allopatric divergence, and suggests that the population structure of two closely related species of black flies, Prosimulium mixtum and P. fuscum, is investigated.
Ephemerella Mayflies of White Clay Creek: Bioenergetic and Ecological Relationships Among Six Coexisting Species
TLDR
It is suggested that competition between pairs of consubgeneric species may be reduced somewhat by having the relative abundance and body size, as well as resource requirements (i.e., biomass production), of each pair segregated temporally.
Evidence for upstream dispersion of adult CAD disflies (Trichoptera: Hydropsychidae) in the Columbia River
TLDR
The radioisotope 65Zn was found in levels above background in shoreline swarms of adult caddis flies as far as 16 km above the uppermost reactor effluent, suggesting upstream movement is important for understanding the biology of riverine aquatic insects and for evaluating the upstream dispersal of radioactive contaminants.
Influence of habitat manipulations on interactions between cutthroat trout and invertebrate drift. [Salmo clarki]
TLDR
Cutthroat trout were experimentally confined in stream pools, and short-term relative growth rates were greater in a logged than in a forested section of stream, and a logarithmic relationship was found between trout foraging efficiency and surface light of pools.
GENE FLOW IN HOUSE MICE: INTRODUCTION OF A NEW ALLELE INTO FREE‐LIVING POPULATIONS
  • A. E. Baker
  • Biology
    Evolution; international journal of organic evolution
  • 1981
TLDR
Studies of the genetic and population structure in house mice that are reported here grew out of the need to resolve a paradox.
RARE ALLELES AS INDICATORS OF GENE FLOW
  • M. Slatkin
  • Mathematics
    Evolution; international journal of organic evolution
  • 1985
TLDR
A method for estimating the average level of gene flow in a subdivided population, as measured by the average number of migrants exchanged between local populations, Nm, is presented and it is shown that this result is relatively insensitive to changes in parameters of the model other than Nm and the number of individuals sampled per population.
ESTIMATING F‐STATISTICS FOR THE ANALYSIS OF POPULATION STRUCTURE
TLDR
The purpose of this discussion is to offer some unity to various estimation formulae and to point out that correlations of genes in structured populations, with which F-statistics are concerned, are expressed very conveniently with a set of parameters treated by Cockerham (1 969, 1973).
...
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