Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Diel feeding chronology of six fish species in the Juniata River, Pennsylvania Diel feeding chronology of six fish species in the Juniata River, Pennsylvania
We examined diel feeding chronology of six fish species in the Juniata River, Pennsylvania. Ephemeropteran nymphs were the major prey of redbreast sunfish (Lepomis auritus; 70.5%) and smallmouth bass (Micropterus dolomieu; 59.7%) during each of six 4-h intervals over a 24-h period. The main dietary component of mimic shiner (Notropis volucellus) was chironomids (42.3%), whereas spotfin...
Authors
J. H. Johnson, D. S. Dropkin
Growth and mortaility rates of larval American shad, Alosa sapidissima, at different salinities Growth and mortaility rates of larval American shad, Alosa sapidissima, at different salinities
The tolerance of post yolk-sac American shad Alosa sapidissima larvae to salinities typically seen in estuaries was assessed experimentally. Sixteen-day-old Hudson River (experiment I) and 35-d-old Delaware River (experiment II) larvae were held for 8 d and 9 d respectively in low (0–1‰), medium (9–11‰), and highly (19–20‰) brackish water, and mortality and growth rates were measured...
Authors
K.E. Limburg, R. M. Ross
Detection and identification of aquatic birnaviruses by PCR assay Detection and identification of aquatic birnaviruses by PCR assay
A reverse transcriptase polymerase chain reaction (RT-PCR) assay was developed for the detection and identification of aquatic birnaviruses. The four sets of primers (PrA, PrB, PrC, and PrD) that we used are specific for regions of cDNA coded by genome segment A of aquatic birnaviruses. PrA identifies a large fragment (1,180 bp) within the pVP2-coding region, and PrB identifies a 524-bp...
Authors
S.L. Blake, W. B. Schill, P. E. McAllister, M.K. Lee, J.T. Singer, B.L. Nicholson
Can otolith microchemistry chart patterns of migration and habitat utilization in anadromous fishes? Can otolith microchemistry chart patterns of migration and habitat utilization in anadromous fishes?
Seasonal and ontogenetic patterns in estuarine and coastal migrations of anadromous fish species have important consequences to their survival, growth, recruitment, and reproduction. We tested the hypothesis that otolith (sagitta) microchemistry can document the environmental history of individual fish across an estuarine salinity gradient. Juvenile striped bass, Morone saxatilis...
Authors
D.H. Secor, A. Henderson-Arzapalo, P.M. Piccoli
Influence of tank design and hydraulic loading on the behavior, growth, and metabolism of rainbow trout (Oncorhynchus mykiss) Influence of tank design and hydraulic loading on the behavior, growth, and metabolism of rainbow trout (Oncorhynchus mykiss)
Subadult rainbow trout (Oncorhynchus mykiss) stocked at 48 kg/m3 (3 lb/ft3) were subjected to treatments of tank design (rectangular plug flow, circular, and cylindrical cross flow) and water exchange rate (1·5 and 2·5 exchanges/h) to determine their effects on fish behavior, growth, and metabolism. Ambient light levels and current velocities were also measured in each of three tank...
Authors
Robert M. Ross, Barnaby J. Watten, W. F. Krise, M. N. DiLauro, R. W. Soderberg
Getting started: intensive rearing of larval Atlantic and lake sturgeon for restoration programs Getting started: intensive rearing of larval Atlantic and lake sturgeon for restoration programs
No abstract available.
Authors
W. F. Krise, M. N. DiLauro, Lori A. Redell
Glacial removal of late Cenozoic subglacially emplaced volcanic edifices by the West Antarctic ice sheet Glacial removal of late Cenozoic subglacially emplaced volcanic edifices by the West Antarctic ice sheet
Local maxima of the horizontal gradient of pseudogravity from closely spaced aeromagnetic surveys over the Ross Sea, northwestern Ross Ice Shelf, and the West Antarctic ice sheet, reveal a linear magnetic rift fabric and numerous subcircular, high-amplitude anomalies. Geophysical data indicate two or three youthful volcanic edifices at widely separated areas beneath the sea and ice cover...
Authors
John C. Behrendt, D. D. Blankenship, D. Damaske, A. K. Cooper
Silurian tectonic history of Penobscot Bay region, Maine Silurian tectonic history of Penobscot Bay region, Maine
Early Paleozoic amalgamation of composite terranes was contemporaneous at widely separated regions that were later accreted to either ancestral North America or to Gondwana as those two continents approached each other. Peri-Gondwanan terranes formed from Late Cambrian and Early Ordovician rocks were amalgamated in the Late Ordovician and Early Silurian to form the Salinic orogenic belt...
Authors
D. B. Stewart, J. D. Unger, D. R. Hutchinson
Review of nursery and growout culture techniques for red drum (Sciaenops ocellatus) Review of nursery and growout culture techniques for red drum (Sciaenops ocellatus)
No abstract available at this time
Authors
A. Henderson-Arzapalo
Immunotoxicology in fish Immunotoxicology in fish
No abstract available at this time
Authors
D. P. Anderson, M.G. Zeeman
Acidic deposition ("acid rain") Acidic deposition ("acid rain")
Acidic deposition, or "acid rain," describes any form of precipitation, including rain, snow, and fog, with a pH of 5.5 or below (Note: pH values below 7 are acidic; vinegar has a pH of 3). It often results when the acidity of normal precipitation is increased by sulfates and nitrates that are emitted into the atmosphere from burning fossil fuels. This form of airborne contamination is...
Authors
R. Kent Schreiber
Novel techniques for fish disease diagnosis Novel techniques for fish disease diagnosis
No abstract available at this time
Authors
D. P. Anderson