contrast to their medical activity, however, most barber-surgeons seem to have shrunk from major (and dangerous) surgical operations. Their lists of clients and patients reveal that they were consulted by the middle and upper classes of society, to which they themselves belonged according to stock books of their property. About one-third of the barber-surgeons held official posts, up to that of...

Mitochondrial (mt) DNA control region sequences were used to test the genetic and phylogeographic structure of walleye Stizostedion vitreum populations at different geographical scales: among spawning sites, lake basins, lakes, and putative glacial refugia in the Great Lakes region. Sequencing 199 walleye revealed nucleotide substitutions and tandemly repeated sequences that varied in copy numb...

Otsego Lake (42o 41’N-70o’W) is the headwaters of the glacially-created Susquehanna River valley within the northern Appalachian Plateau. Historically considered oligo-mesotrophic, (Harman et al., 1997) the unauthorized introduction of alewives (Alosa pseudoharengus) in 1986 (Foster 1989) affected the lake, creating changes similar to those of eutrophy (Harman et al. 2002). Efficient planktivor...

contrast to their medical activity, however, most barber-surgeons seem to have shrunk from major (and dangerous) surgical operations. Their lists of clients and patients reveal that they were consulted by the middle and upper classes of society, to which they themselves belonged according to stock books of their property. About one-third of the barber-surgeons held official posts, up to that of...

Effect of density and mixed culture largemouth bass (Micropterus salmoides) pikeperch (Sander lucioperca) on growth, survival feed conversion rate in intensive | Tomáš Pěnka, Oleksandr Malinovskyi, Jiří Křišťan, Aiman Imentai, Policar Agricultural Journals

OBJECTIVES The objectives of the study were to compare the different doses of clove oil, Propiscin, and tricaine methane sulphonate (MS 222) in relation to water temperature in pikeperch aquaculture. DESIGN For assessment of this experiment 168 fish (10.77 ± 0.59 cm total body length and 7.88 ± 1.74 g body weight) were used. Three different anaesthetic treatments (Propiscin, clove oil and MS ...

Anthropogenic impairment of water bodies represents a global environmental concern, yet few attempts have successfully linked fish performance to thermal habitat suitability and fewer have distinguished co-varying water quality constraints. We interfaced fish bioenergetics, field measurements, and Thermal Remote Imaging to generate a spatially-explicit, high-resolution surface of fish growth po...

Total mercury levels in aquatic birds and fish communities have been monitored across the Canadian Great Lakes by Environment and Climate Change Canada (ECCC) for the past 42 years (1974-2015). These data (22 sites) were used to examine spatio-temporal variability of mercury levels in herring gull (Larus argentatus) eggs, lake trout (Salvelinus namaycush), walleye (Sander vitreus), and rainbow ...