Publications
Explore WARC's science publications.
Filter Total Items: 3377
Indirect effects: Concepts and approaches from ecological theory
Abstract not supplied at this time
Authors
D.L. DeAngeis
Mortality estimates of striped bass caught in Albemarle Sound and Roanoke River, North Carolina
A statistical analysis of the age composition of striped bass Morone saxatilis harvested in Albemarle Sound and the Roanoke River, North Carolina. indicated that in 1988–1992 the population experienced a relatively high rate of total mortality. Age-3 and older fish were estimated to have been fully vulnerable to fishing mortality and to have experienced a total instantaneous mortality rate of 1.04
Authors
Robert M. Dorazio
Technology transfer opportunities : new development : new protocol verifies sterility of newly hatched fish
U.S. Geological Survey's Biological Resources Disicipline scientists have developed a procedure that could save commercial producers of triploid grass carp between $2000 and $3000 per pond. Since 1983, triploid grass carp have been commercially available for managing aquatic weeds that can cause water quality problems, replace native plants, or impede recreational and commercial use of fisheries a
Authors
J.A. Jenkins
A sexing technique for California Gulls breeding at Bamforth Lake, Wyoming (Una tecnica para determinar sexos en larus californicus reproduciendose en el Lago Bamforth, Wyoming)
We used morphological characteristics to determine the sex of California Gulls (Larus californicus) nesting at Bamforth Lake, Wyoming. Using univariate and multivariate techniques, we evaluated sexual dimorphism in five external measurements taken from 614 California Gulls: bill length, bill depth, head-bill length, tarsus length, and body mass. Males were significantly larger than females for all
Authors
Bruce H. Pugesek
An introduced population of the South American callichthyid catfish Hoplosternum littorale in the Indian River Lagoon system, Florida
Abstract not supplied at this time
Authors
L.G. Nico, S. J. Walsh, R.H. Robins
Confirmation of Glanapteryx anguilla (Siluriformes, Trichomycteridae) in the Orinoco River Basin, with notes on the distribution and habitats of the Glanapteryginae
Abstract not supplied at this time
Authors
L.G. Nico, M. C. C. de Pinna.
Age determination in manatees using growth-layer-group counts in bone
Growth layers were observed in histological preparations of bones of known-age, known minimum-age, and tetracycline-marked free-ranging and captive Florida manatees (Trichechus manatus latirostris), substantiating earlier preliminary findings of other studies. Detailed analysis of 17 new case histories showed that growth-layer group (GLG) counts in the periotic bone were consistent with known age,
Authors
M. Marmontel, T. J. O'Shea, H. I. Kochman, S.R. Humphrey
New records of fishes at Isla del Coco, Costa Rica
Isla del Coco lies at 5 degrees 32'N latitude, 87 degrees 04'W longitude and is the sole peak of the Cocos Ridge exposed above sea level. This isolated island formed approximately 2 million years ago. It rises 575 m above the surface of the sea and covers 46 km2 (Castillo et aI., 1988). Five hundred km to the NNE is Costa Rica; 630 km SSW are the Galapagos Islands; 650 km to the E is Isla Malpelo,
Authors
V.H. Garrison
Estimates of abundance of box turtles (Terrapene carolina bauri) on a Florida island
Abstract not supplied at this time
Authors
C.A. Langtimm, C. K. Dodd, R. Franz
A review of herpetology of the Bahamian archipelago
Abstract not supplied at this time
Authors
R. Franz, C. K. Dodd, S.D. Buckner
Changes in mussels (Bivalvia: Unionidae) fauna within the Kentucky portion of Lake Barkley since impoundment of the lower Cumberland River
Abstract not supplied at this time
Authors
H.N. Blalock, James B. Sickel
Use of terrestrial habitats by amphibians in the sandhill uplands of north-central Florida
Abstract not supplied at this time
Authors
C. K. Dodd