Ryan P. Kovach,∗ ¶ Gordon Luikart,† Winsor H. Lowe,‡ Matthew C. Boyer,§ and Clint C. Muhlfeld∗† ∗U.S. Geological Survey, Northern Rocky Mountain Science Center, Glacier National Park West Glacier, MT 59936, U.S.A. †Flathead Lake Biological Station, University of Montana, Polson, MT 59860, U.S.A. ‡Division of Biological Sciences, University of Montana, Missoula, MT 59812, U.S.A. §Montana Fish, W...

Muscle melanisation in sand flathead is defined as the presence of abnormal black spots fish's flesh and phenomenon has been associated with Zn pollution environment. In this study, levels fish muscle crabs were analysed to investigate role causing uptake via its diet, crabs. An improved technique for extracting melanised from fillets was developed. It enabled be more accurately determined when...

1 Jet Propulsion Laboratory, California Institute of Technology, Pasadena California 2 Flathead Lake Biological Station, Division of Biological Sciences, The University of Montana, Polson Montana 3 University of California in Santa Barbara, Institute for Computational Earth System Science, Santa Barbara, California 4 Radiation Laboratory, University of Michigan, Ann Arbor, Michigan 5 Goddard In...

Annual growth increments were calculated for blue catfish (Ictalurus furcatus) and flathead catfish (Pylodictis olivaris) from the lower Mississippi River (LMR) to assess hypothesized relationships between fish growth and floodplain inundation as predicted by the Flood-Pulse Concept. Variation in catfish growth increment was high for all age classes of both species, and growth increments were n...

Cytokinesis is an essential step in neurogenesis, yet the mechanisms that control cytokinesis in the developing CNS are not well understood. The flathead ( fh) mutation in rat results in cytokinesis failure in neural progenitors followed by apoptosis and a dramatic reduction in CNS growth. Here we present evidence that the fh mutation is caused by a single base deletion in exon 1 of the gene en...

Chronologies are developed from the otolith growth-increment widths of adult rock flathead (Platycephalus laevigatus) and longhead flathead (Leviprora inops) collected from three inter-connected embayments in temperate south-western Australia. Marginal increment trends on otoliths, in combination with the dendrochronological technique of crossdating, provide strong evidence that an opaque zone ...