Book reviews /Aquaculture 133 (1995) 171-l 74 173 studies is already found in the title of the report. The term “Nutrient requirements” suggests an answer to “required for what?” The report’s answer to this question is “for normal health, good growth and reproduction”. However, as growth is a process with clear doseresponse relationships, the growth rate that is qualified as “good” should first be specified. Perhaps the line of thought should start with the concept hat it is primarily man who has requirements, not fish. MARK NIJHOF, DAE/SCOMAX B.V. EPON-Eemscentrale Robbenplaahveg 1I Eemshaoen The Netherlands zyxwvutsrqpo Fish bioenergetics zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCB Malcolm Jobling. Fish and Fisheries Series 13, Chapman 1994, xvi + 309 pp., E24.99, ISBN 041258090X. Fish Bioenergetics. London, & Hall, This book written by Dr. Jobling comprises three main sections. In Part I, under the title Nutritional requirements and dietary formulation, the author presents a summary on the nutrients in feed as an energy source for fish in an easy-to-understand manner, starting from the general chemical structure, metabolism, requirement of each nutrient, ingredients of feed, nutrient interactions and fish health. Although there is still something to be desired in this book when compared with several others written on fish nutrition; it will be an appropriate introduction in so far as it is intended as a treatise on Bioenergetics. Part II, which focusses on physiological energetics, feeding metabolism and growth, makes great use of figures and equations; the author explains first the concept of energy metabolism in fish and then energy budget, respiration and metabolism, and further the basic relationships between feeding and growth, based on the newly introduced concept of energy in relation to environmental factors (water temperature, salinity, photoperiod, dissolved oxygen, etc.), behavior (fish size, stocking density, etc.) and the relationship between hormones and growth. In Part III, dealing with environmental tolerance and preferences, the physiological basis is explained through changes in water temperature, respiration, blood circulation, gas exchange, the relationship between dissolved oxygen and metabolic rates in fish, etc. In addition, he examines the effect of environmental factors, resulting in freshwater acidification, ammonia, other nitrogenous wastes and stress on fish. The distinct feature of this book is the careful and clear presentation of the subject. The author has abundantly used equations to demonstrate the relationship between growth and energy metabolism in Part II, proving his mettle and providing excellent contents for the book. He should also be congratulated as the first author to have adeptly treated the complex field of physiology and nutrition in fish. However, although the tables are sufficient to explain what is in the text, the oversimplified presentation of the data may leave the reader 174 zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA Book reviews /Aquaculture 133 (1995) 171- l 74 dissatisfied. In addition, the text as well as the figures and tables do not carry any references, thereby depriving the serious reader of any chance to cross-refer, irrespective of the addendum on books and published papers provided for each Part. Therefore, this book may not be very appropriate for specialists in this area. Nevertheless, as the basic facts are fully described, it should serve as a good textbook for students who specialize in the Faculty of Fisheries, or Oceanography, or Biological Sciences and could also be used as an excellent introductory book for researchers in the other fields. This book is highly recommended as a guide to comprehending the concept of fish energetics, and furthermore for provoking interest in aquaculture, specially in fish physiology, fish nutrition, fish culture and fish genetics. TOSHIO TAKEUCHI Laboratory of Aquaculture (Fish Culture) Departmenf of Aquatic Biosciences Tokyo University of Fisheries Tokyo Japan Books received Rosenfield, A. and Mann, R. (Editors), Dispersal of Living Organisms into Aquatic Ecosystems. Maryland Sea Grant Publ., College Park Maryland, 1992, ISBN O-946376-56-8. Ikenou, H. and Kafuku, T., Modern Methods of Aquaculture in Japan, 2nd revised edn., Developments in Aquaculture and Fisheries Science, Vol. 24, Elsevier, Amsterdam 1992, xix +274 pp., US$ 143.00/Dfl. 250.00, ISBN O-444-98665-0. DeLoach, P.F., Dougherty, W.J. and Davidson, M.A. (Editors), Frontiers of Shrimp Research. Developments in Aquaculture and Fisheries Science, Vol. 22, Elsevier, Amsterdam, 1991, vii + 294 pp, US$l03.OO/Dfl. 180.00, ISBN O-444-88346 0. zyxwvutsrqpo