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This collection of articles is a sampling of papers vironmental Toxicants and their Effects on the from the second biennial symposium for the 'Etho Ethology and Behavioral Ecology of Fishes', or logy and Behavioral Ecology of Fishes'. This con ganized by Mary Henry and Jack Ward featured ference was also the first North American Meeting invited papers by: John B. Sprague; Mary G. Henry & Gary J. Atchison; as well as contributed papers of the 'International Association of Fish Etholog ists' and was held October 19-22, 1979 ·on the Il by Robert A. Drummond, Daniel Abel & Chris linois State University campus in Normal. Illinois, topher C. Koenig; C. G. Prewitt & C. B. Stalnaker; U. S. A. , the site for the first conference in 1977 Kenneth S. Lubinski; J. Doerzbacher & C. F. Bryan; and the proposed site for the third biennial con Michael A. Barry; Allen E. Bingham & Robert G. ference scheduled for May 1981. The organiza White. tional committee for these conferences is Jack The symposium 'Reproductive Tactics' was or Ward, Chairman, Illinois State University (Biology, ganized by Luther Brown, Jeff Baylis and David Normal, IL 61761); Jeffrey Baylis, University of Noakes, and featured invited papers by: Jerry F. Wisconsin (Zoology, Madison, WI 53706); Luther Downhower, Luther Brown, R. Pederson & G. Brown, George Mason University (Biology, Fair Staples; Roger Thibault; George Barlow; Richard fax, VA 22030); Mike Fitzsimmons, Louisiana State Borowsky & John Diffley; Jack Ward & J. I.

Ecology and ethology of fishes: Proceedings of the 2nd biennial symposium on the ethology and behavioral ecology of fishes, held at Normal, Ill., U.S.A., October 19-22, 1979

A new stereophotographic technique for analyzing the three dimensional structure of fish schools.- Computer tools for the analysis of schooling.- Facultative schooling behavior in the spottail shiner (Notropis hudsonius): possible costs and benefits.- Effects of alarm substance on schooling in the common shiner (Notropis cornutus, Cyprinidae).- Attraction of zebrafish, Brachydanio rerio, to isolated and partially purified chromatographic fractions.- Reduction of competition between bisexual and unisexual females of Poecilia in northeastern Mexico.- Synchronized maturation and breeding in natural populations of Xiphophorus variatus (Poeciliidae).- Maintenance of female mimicry as a reproductive strategy in bluegill sunfish (Lepomis macrochirus).- Patterns of parental investment, dispersal and size among coral-reef fishes.- The reproductive behaviour of Aequidens vittatus (Pisces, Cichlidae) in Surinam, South America.- Reproductive tactics of the Asian cichlids of the genus Etroplus in Sri Lanka.- Habitat segregation in a salt marsh among adult sticklebacks (Gasterosteidae).- Factors affecting fish diversity on a temperate reef.- Abstracts.