J.A. Ward – författare

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.

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.

The potential consequences of a predator-prey predators tend to do that increase or maximize prey interaction are probably more serious, especially capture and that prey tend to do to avoid being for the prey, than are the consequences of most captured? The second theme emphasized the eco­ competitive or parasite-host interactions. For this logical approach to predator-prey interactions. reason, the adaptations and tactics that prey show What are the environmental constraints that in­ to the foraging manoeuvers of their predators, and fluence the evolution of structures and behaviors the counteradaptations of their predators, are often involved in predation and its avoidance? How do pronounced and even spectacular. Predation may in these factors combine to produce particular ,fssem­ fact be a critical determinant of both the behavior blages of predators and prey with common adapta­ of individuals and of the functional and taxonomic tions? The 18 papers presented at the symposium, composition of fish assemblages. This possibility and the ones published in these proceedings, re­ was a major factor leading to the organization of present the varied approaches that researchers have the Behavioral Tactics symposium. The obvious taken in addressing these questions. necessity of feeding, the wealth of information Several topics were common to many presenta­ available on food and energy budgets of animals tions: four of these in particular deserve at least both in the laboratory and field, and the approach brief mention.

The potential consequences of a predator-prey predators tend to do that increase or maximize prey interaction are probably more serious, especially capture and that prey tend to do to avoid being for the prey, than are the consequences of most captured? The second theme emphasized the eco­ competitive or parasite-host interactions. For this logical approach to predator-prey interactions. reason, the adaptations and tactics that prey show What are the environmental constraints that in­ to the foraging manoeuvers of their predators, and fluence the evolution of structures and behaviors the counteradaptations of their predators, are often involved in predation and its avoidance? How do pronounced and even spectacular. Predation may in these factors combine to produce particular ,fssem­ fact be a critical determinant of both the behavior blages of predators and prey with common adapta­ of individuals and of the functional and taxonomic tions? The 18 papers presented at the symposium, composition of fish assemblages. This possibility and the ones published in these proceedings, re­ was a major factor leading to the organization of present the varied approaches that researchers have the Behavioral Tactics symposium. The obvious taken in addressing these questions. necessity of feeding, the wealth of information Several topics were common to many presenta­ available on food and energy budgets of animals tions: four of these in particular deserve at least both in the laboratory and field, and the approach brief mention.