. Bulletin of the Department of Agriculture. Agriculture; Agriculture. DEPARTMENT BULLETIN No. 1222. Washington, D. C. March 14,1924 GROWTH AND FEEDING OF HONEYBEE LARVAE. By James A. Nelson, Formerly Expert in Apiculture, Arnold P. Sturtevant, Apicultural Assistant, and Bruce Limeburg, Formerly Assistant in Bee- keeping, Bureau of Entomology. Part I. The rate of growth of the honeybee larva {James A. Nelson and Arnold P. Sturtevant) 1 Part II. The feeding of honeybee larvae {Bruce Lineburg) 25 PART I. THE RATE OF GROWTH OF THE HONEYBEE LARVA CONTENTS. Page. Introduction 1 Methods, Lots 1
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. DEPARTMENT BULLETIN No. 1222. Washington, D. C. March 14,1924 GROWTH AND FEEDING OF HONEYBEE LARVAE. By James A. Nelson, Formerly Expert in Apiculture, Arnold P. Sturtevant, Apicultural Assistant, and Bruce Limeburg, Formerly Assistant in Bee- keeping, Bureau of Entomology. Part I. The rate of growth of the honeybee larva {James A. Nelson and Arnold P. Sturtevant) 1 Part II. The feeding of honeybee larvae {Bruce Lineburg) 25 PART I. THE RATE OF GROWTH OF THE HONEYBEE LARVA CONTENTS. Page. Introduction 1 Methods, Lots 1 to 7 2 Observations, Lots 1 to 7 : 2 Weight of eggs 2 Rate of growth of larvae 3 Variations in rate of growth 6 Length, of the larval period 6 Effects of underfeeding 7 Methods, Lot 8 8 Observations, Lot 8 9 Effect of no honey-flow 9 Effect of stimulation 9 Nature and composition of brood food 11 Page. Time of change in composition of brood food 12 Rate of growth 13 Correlation of food with the rate of growth 14 Correlation with time spent in nursing 16 General appearance of larvae of dif- ferent ages 16 Summary and conclusions 18 Tables 1 to 4 20 Literature cited 24 INTRODUCTION. Notwithstanding the abundant literature on the adult honeybee, there is a relatively small amount of exact information concerning the life history of the larva, particularly with regard to the ex- traordinary rate of development and the factors influencing this growth. Straus (9),1 in connection with a study of the chemical composition of honeybee larva? at different ages, gives a series of careful weighings of larvse at successive age periods 24 hours apart. 1 Reference is made by number (italic) to " Literature cited," p. 24. 69525°—24 1. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agricu
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