Jacob T. Shaner, John M. Jacobs, Lance T. Yonkos, and Reginal M. Harrell
The white perch (Morone americana) is an abundant estuarine teleost in eastern North America, with its commercial and trophic importance creating a need for fecundity and recruitment data. In this study, we reevaluated the fecundity of subpopulations of white perch in Chesapeake Bay. Stereological sampling methods were used to determine if environmental changes in the Chesapeake Bay watershed over the last 60 years have altered average fecundity of this species. Read the article (PDF, 10 pages).
Paul G. von Szalay, Edward A. Laman, Stan Kotwicki, Lewis A. K. Barnett, and Kotaro Ono
We assessed the effect of survey effort reduction on the accuracy and precision of estimates of abundance for 4 commercially or ecologically important species with differing distributions observed in a bottom-trawl survey conducted in the Gulf of Alaska. Simulations from a spatiotemporal generalized linear mixed model based on historical observations of catch densities were used to evaluate the statistical robustness, measured in terms of coefficient of variation, relative bias, and relative root mean square error, of the abundance estimates and their variances. Read the article (PDF, 19 pages).
Dennis M. Allen, John J. Govoni, Kenneth W. Able, Jeffrey A. Buckel, Edward A. Hale, Eric J. Hilton, G. Todd Kellison, Timothy E. Targett, J. Christopher Taylor, and Harvey J. Walsh
Ichthyoplankton data sets based on collections from estuaries in South Carolina, North Carolina, Virginia, Delaware, and New Jersey and from ocean cruises off the U.S. East Coast were examined to determine spawning locations in the ocean, cross-shelf distributions of larvae, and movements of spot (Leiostomus xanthurus) into estuaries. Read the article (PDF, 24 pages).
Katsuya Kimura, Ryo Misawa, and Fumihito Tashiro
Post-settlement juveniles of 3 greeneye species in the family Chlorophthalmidae, the blackedge greeneye (Chlorophthalmus nigromarginatus), humpback greeneye (C. acutifrons), and bigeyed greeneye (C. albatrossis), are described for the first time on the basis of 5, 2, and 9 specimens, respectively, collected from northern Japan. Read the article (PDF, 17 pages).
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