Houde’s book to those interested in speciﬁc aspects of One of the most prominent reasons for EMS and M74 guppy biology (e.g. guppy hobbyists). At US$19.95 syndromes is the low concentration of thiamine in per copy (in paperback), this book is a terriﬁc bargain. the eggs. Also, thiamine treatment of fry and eggs has often proved to be therapeutically effective. Other F. Helen Rodd vitamins or minerals do not appear to be involved in Department of Zoology the syndromes. The Swedes have been more active in University of Toronto correlating carotenoids and other antioxidants to the presence of M74. However, no relation exists between Kimberly A. Hughes EMS and oxidative stress or the depletion of antiox- Department of Life Sciences idant vitamins. Honeyﬁeld et al. also present a useful Arizona State University, Phoenix chapter of ‘Future Research Needs’. It is a pity that scientists who were unable to attend the symposium Trevor E. Pitcher have had to wait more than a year for these results. Department of Zoology The proceedings in hand give a clear descrip- University of Toronto tion of our knowledge concerning the early mortality syndrome of salmonids. At the time of the symposium, some experimental techniques, i.e. the thiamine analysis, differed enormously among laboratories Early Life Stage Mortality Syndrome in Fishes of involved with EMS. Some of them were able to the Great Lakes and Baltic Sea (American Fish- analyse only the total thiamine concentration of the eries Society Symposium 21). Edited by Gordon tissues, while others were able to quantify different McDonald, John D. Fitzsimons and Dale C. Honey- metabolites of thiamine. In spite of their differing ﬁeld. American Fisheries Society, Bethesda, MD, analytical ‘status’, the interpretation of the results 1998. ISBN 1-888569-08-5, ISBN 0892-2284, $46.00 mostly agreed. However, it would be worth intercal- US. Soft cover, acid-free paper, pp. x + 177, 50 ibrating the analytical methods used in the EMS ﬁeld. tables, 68 ﬁgures (8 in colour). Proceedings of the This could help in interpreting the small differences Symposium ‘Early Mortality Syndrome: Reproductive found between EMS, Cayuga Syndrome and M74. Disruptions in Fish of the Great Lakes, New York Research into the food web as a source of thiamine Finger Lakes, and the Baltic Region’, held at Dear- is a new challenge. It has been shown that the thiam- born, Michigan, USA, 28 August 1996. Available inase activity in some of the main foods of salmon from: AFS Publication Fulﬁllment, PO Box 1020, (alewife, smelt and Baltic herring) is high. Fitzsi- Sewickley, PA 15143, USA (fax +1 412 741 0609). mons and Brown present data indicating that the low thiamine in the eggs of lake trout consuming mostly This volume contains 18 papers by 20 scientists from smelt and alewife was due to their high thiaminase Canada, the United States and Sweden, given at a content. This makes sense: thiaminase activity doesn’t symposium of the American Fisheries Society held cease until below pH 4.5; the engulfed or swallowed at Dearborn, Michigan, USA, on 28 August 1996. food mass in the stomach might take several hours to In addition, there is a short introductory preface on reach this pH. the development of early mortality syndromes (EMS), The editors have succeeded in providing compre- from early work concerning DDT-related mortalities hensive information on early mortality syndrome in all of aquatic animals in the 1960s, to the new type of its forms and its etiology. These symposium proceed- EMS found in salmonids throughout the Great Lakes, ings will stimulate new and more thorough kinds in the New York Finger Lakes (Cayuga Syndrome), of investigation of EMS, even if the enormously and in the Baltic Sea, where it is called M74. decreased M74 frequency in the Baltic continues, Finding referees for papers from this limited area and many scientists may initiate further research in must have been a problem for the editors. After the farmed ﬁsh to ﬁnd the real reasons for the interesting preface, there is a list of 30 reviewers, including 4 of syndrome. the authors, which is not many. In the ﬁrst, introductory paper, concentrating on EMS and M74, Honeyﬁeld et al. give a nice overview Antti Soivio of the symposium results, including a list of generaliz- Finnish Game and Fisheries Research Institute ations about knowledge on early life stage mortalities. Helsinki, Finland
Reviews in Fish Biology and Fisheries – Springer Journals
Published: Sep 30, 2004
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