TABLE OF CONTENTS 



Page 



Introduction 1 



Collection and care of brood stocks 2 



Facilities for spawning 2 



Collection, preservation, and storage of pituitjiries .... 3 



Use of pituitaries 3 



Preparation and injection 3 



Frequency, number, and size of injections 5 



Success of spawnings following injections 5 



Time of response 9 



Induced spawning of catfish refractive to usual 



hatchery procedures 9 



Degree of spawning success 10 



Behavior of males 10 



Recommended procedure 11 



Summary . 11 



Literature cited 12 



