Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9969
The influence of ambient salinity on routine metabolism in the teleost Cyprinodon variegatus Lacepède
Routine metabolism of the euryhaline cyprinodontid Cyprinodon variegatus Lacepede was measured at a series of ambient salinities ranging from fresh water through 100‰. Fish used had been sequentially acclimated to the test salinities (ambient temperature of 20±1° C and a 12: 12 L: D schedule).
Routine metabolic rates were highest at ambient salinities from 15 to 50‰. Metabolism was somewhat lower
Authors
F.G. Nordlie, S. J. Walsh, D. C. Haney, T.F. Nordlie
Fishes of the night. Part 2. The weakly electric gymnotoids
Abstract not supplied at this time
Authors
L.G. Nico
Protein and mitochondrial DNA variation in the salamander Phaeognathus hubrichti
Abstract not supplied at this time
Authors
M.L. McKnight, C. K. Dodd, C.M. Spolsky
An evaluation of aerial survey replicate count methodology to determine trends in manatee abundance
Abstract not supplied at this time
Authors
L.W. Lefebvre, H. I. Kochman
Occurrence of a South American Armored Catfish in the Hillsborough River, Florida
Abstract not supplied at this time
Authors
M.E. Ludlow, S. J. Walsh
Stocking of hatchery-reared striped bass in the Patuxent River, Maryland: survival, relative abundance, and cost-effectiveness
Hatchery-reared fingerlings of striped bass Morone saxatilis were tagged, stocked, and recovered in the Patuxent River, Maryland, to estimate their survival and abundance relative to wild young of the year and to compare the costs and benefits of stocking phase-I (35–50 mm, total length) and phase-II (150–200 mm) fish. About 100,000 phase-I fingerlings were tagged and released each year during mid
Authors
R.M. Dorazio, B.M. Florence, C.M. Wooley
Evaluation of a mark-recapture method for estimating mortality and migration rates of stratified populations
We simulated mark–recapture experiments to evaluate a method for estimating fishing mortality and migration rates of populations stratified at release and recovery. When fish released in two or more strata were recovered from different recapture strata in nearly the same proportions, conditional recapture probabilities were estimated outside the [0, 1] interval. The maximum likelihood estimates te
Authors
R.M. Dorazio, P.J. Rago
Reproduction in a Western Smooth Earth Snake (Virginia valeriae elegans) from Western Kentucky
Abstract not supplied at this time
Authors
M.A. Morris, S. J. Walsh
The status of the Red Hills salamander Phaeognathus hubrichti, Alabama, USA, 1976–1988
A total of 144 sites in the Red Hills Physiographic Province in south-central Alabama, USA, were surveyed in 1988 for burrows of the Red Hills salamander Phaeognathus hubrichti. Of 92 sites surveyed in 1976, no change occurred in the habitat at 54 sites, conditions improved at 19 sites and deteriorated at 18 sites following selective or clear cutting. An additional 14 of 52 sites not surveyed in 1
Authors
C. K. Dodd
Relocation, repatriation, and translocation of amphibians and reptiles: Are they conservation strategies that work?
Abstract not supplied at this time
Authors
C. K. Dodd, R.A. Seigel
An intergeneric hybrid of a native minnow, the golden shiner, and an exotic minnow, the rudd
The hybrid golden shiner Notemigonus crysoleucas × rudd Scardinius erythrophthalmus is the first known nonsalmonid, intergeneric hybrid of an exotic species and a North American native species. The cross is also the first valid record of a viable hybrid involving the native golden shiner. Meristic and mensural characters of 30 artificially produced hybrids of male golden shiners and female rudds w
Authors
N.M. Burkhead, J.D. Williams