Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16743
Artificial insemination in captive Whooping Cranes: Results from genetic analyses Artificial insemination in captive Whooping Cranes: Results from genetic analyses
Artificial insemination has been used frequently in the captive whooping crane (Grus americana) population. In the 1980s, it was necessary at times to inseminate females with semen from several males during the breeding season or with semen from multiple males simultaneously due to unknown sperm viability of the breeding males. The goals of this study were to apply microsatellite DNA...
Authors
K.L. Jones, Jane M. Nicolich
Tumor prevalence and biomarkers of exposure in brown bullheads (Ameiurus nebulosus) from the tidal Potomac River, USA, watershed Tumor prevalence and biomarkers of exposure in brown bullheads (Ameiurus nebulosus) from the tidal Potomac River, USA, watershed
Associations between contaminant exposure and liver and skin tumor prevalence were evaluated in brown bullheads (Ameiurus nebulosus) from the tidal Potomac River, USA, watershed. Thirty bullheads (≥ age 3) were collected from Quantico embayment, near a Superfund site that released organochlorine contaminants; Neabsco Creek, a tributary with petroleum inputs from runoff and marinas; and...
Authors
A.E. Pinkney, J.C. Harshbarger, E.B. May, M. J. Melancon
A case for using Plethodontid salamanders for monitoring biodiversity and ecosystem integrity of North American forests A case for using Plethodontid salamanders for monitoring biodiversity and ecosystem integrity of North American forests
Terrestrial salamanders of the family Plethodontidae have unique attributes that make them excellent indicators of biodiversity and ecosystem integrity in forested habitats. Their longevity, small territory size, site fidelity, sensitivity to natural and anthropogenic perturbations, tendency to occur in high densities, and low sampling costs mean that counts of plethodontid salamanders...
Authors
Hartwell H. Welsh, Sam Droege
Continuing education needs for fishery professionals: a survey of North American fisheries administrators Continuing education needs for fishery professionals: a survey of North American fisheries administrators
North American fishery professionals? continuing education needs were investigated in an American Fisheries Society questionnaire sent to 111 senior fishery officials in winter 2000. Based on a response rate of 52.2% (N = 58), a minimum of 2,967 individuals would benefit from additional training, especially in the areas of statistics and analysis (83% endorsement rate), restoration and
Authors
G.N. Rassam, R. Eisler
Eleutherodactylus guttilatus (Spotted Chirping Frog), Bufo punctatus (Red-spotted Toad), Hyla arenicolor (Canyon Tree Frog), and Rana berlandieri (Rio Grande Leopard Frog). Mite Infestation Eleutherodactylus guttilatus (Spotted Chirping Frog), Bufo punctatus (Red-spotted Toad), Hyla arenicolor (Canyon Tree Frog), and Rana berlandieri (Rio Grande Leopard Frog). Mite Infestation
No abstract available.
Authors
R.E. Jung, S. Claeson, J. E. Wallace, W.C. Welbourn
Combining band recovery data and Pollock's robust design to model temporary and permanent emigration Combining band recovery data and Pollock's robust design to model temporary and permanent emigration
Capture-recapture models are widely used to estimate demographic parameters of marked populations. Recently, this statistical theory has been extended to modeling dispersal of open populations. Multistate models can be used to estimate movement probabilities among subdivided populations if multiple sites are sampled. Frequently, however, sampling is limited to a single site, Models...
Authors
M. S. Lindberg, W. L. Kendall, J.E. Hines, Michael G. Anderson
Whooping cranes breeding at White Lake, Louisiana, 1939: observations by John J. Lynch, U.S. Bureau of Biological Survey Whooping cranes breeding at White Lake, Louisiana, 1939: observations by John J. Lynch, U.S. Bureau of Biological Survey
On 15 May 1939, John J. Lynch of the U.S. Bureau of Biological Survey located 13 whooping cranes (Grus americana), including 2 prefledged young, during an aerial survey near White Lake in southwestern Louisiana. His observation was the last historic record of whooping cranes breeding in the wild in the United States, and it confirmed the presence of a nonmigratory breeding population...
Authors
Rod C. Drewien, J. Tautin, M.L. Courville, G.M. Gomez
Ecological considerations for reservoir planning in north Georgia Ecological considerations for reservoir planning in north Georgia
No abstract available.
Authors
Mary C. Freeman, M.D. Merrill, B. J. Freeman
A reintroduction experiment involving mated pairs of parent-reared greater sandhill cranes in northern Arizona A reintroduction experiment involving mated pairs of parent-reared greater sandhill cranes in northern Arizona
In April 1997, 4 mated pairs of adult greater sandhill cranes (Grus canadensis tabida) were abrupt-released at Mormon Lake, Arizona. Five of 8 adult cranes died within 10 days of release. One crane flew from the release area within 10 days after release and was never relocated. One pair of cranes, with 1 pair member sustaining a broken wing 4 days after release, survived for 4 months and
Authors
D.P. Mummert, D. H. Ellis, C. L. Chambers
Effects of gulls on Piping Plover nest site selection at Monomoy National Wildlife Refuge, Massachusetts Effects of gulls on Piping Plover nest site selection at Monomoy National Wildlife Refuge, Massachusetts
We examined the effects of Herring and Great Black-backed Gulls on Piping Plover nest site selection on South Monomoy Island, MA, from 1998 to 2000. We compared Piping Plover behavior and nest site selection in a gull-free area to a gull area, and compared Piping Plover nesting area characteristics to areas not used by plovers. We found no difference in the frequency of disturbance by...
Authors
S. E. Keane, J.D. Fraser, P. A. Buckley
Access to bird population data Access to bird population data
Access to bird population data is critical for effective conservation planning and implementation. Although a tremendous volume of baseline data exists, it is often diffusely distributed and inaccessible to the resource manager and decision maker. A mechanism that facilitates assembly, documentation and delivery of avian data in a user-friendly manner is needed in order to integrate bird...
Authors
E. Martin, B.G. Peterjohn, M.D. Koneff
Results of the second (1996) experiment to lead cranes on migration behind a motorized ground vehicle Results of the second (1996) experiment to lead cranes on migration behind a motorized ground vehicle
Fourteen greater sandhill cranes (Grus canadensis tabida) were trained to follow a specially-equipped truck and 12 were led along a ca 620-km route from Camp Navajo in northern Arizona to the Buenos Aires National Wildlife Refuge near the Arizona/Mexico border. Ten survived the trek, 380 km of which were flown, although only a few cranes flew every stage of the route. Major problems...
Authors
D. H. Ellis, B. Clauss, T. Watanabe, R.C. Mykut, M. Shawkey, D.P. Mummert, D.T. Sprague, Catherine H. Ellis, F.B. Trahan