Iowa State University Capstones, Theses and Graduate Theses and Dissertations Dissertations 2010 Summer food habits and gill raker morphology of seven Catostomid species in Iowa rivers Jason Spiegel Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/etd Part of the Environmental Sciences Commons Recommended Citation Spiegel, Jason, "Summer food habits and gill raker morphology of seven Catostomid species in Iowa rivers" (2010). Graduate Theses and Dissertations. 11647. https://lib.dr.iastate.edu/etd/11647 This Thesis is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact
[email protected]. Summer food habits and gill raker morphology of seven Catostomid species in Iowa rivers by Jason Robert Spiegel A thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major: Fisheries Biology Program of Study Committee: Joseph E. Morris, Major Professor Michael C. Quist Richard C. Schultz Iowa State University Ames, Iowa 2010 ii TABLE OF CONTENTS LIST OF TABLES iv LIST OF FIGURES v ACKNOWLEDGEMENTS vi CHAPTER 1. GENERAL INTRODUCTION 1 References 4 CHAPTER 2. PRECISION OF SCALES AND PECTORAL FIN RAYS FOR ESTIMATING AGE OF HIGHFIN CARPSUCKER, QUILLBACK CARPSUCKER, AND RIVER CARPSUCKER Abstract 6 Introduction 7 Methods 9 Results 11 Discussion 12 References 14 Tables 19 Figures 23 iii CHAPTER 3. SUMMER FEEDING HABITS AND GILL RAKER MORPHOLOGY OF SEVEN CATASTOMID SPECIES IN IOWA RIVERS Abstract 24 Introduction 25 Methods 27 Results 30 Discussion 33 References 38 Tables 44 Figures 48 CHAPTER 4.