ation Characteristics of Muske orthern Pike and Their Hybrid asquinongy

1 961-1 968. We compared growth, survival, diet, and angler catch of muskellunge (Esoxnaasquinsngy), northern pike (E. Bucius), and tiger muskellunge (E. masquinongyx E. lucius) through 5 yr after their introduction into three Ohio reservoirs. Muskellunge grew slower than northern pike and tiger muskellunge through the first year but faster than northern pike in subsequent years. barge stocked esocids (180-205 mm) survived better than small ones (1 45 mm). Survival patterns established through the first fall were maintained through age 5; northern pike survived best, followed by muskellunge and tiger muskellunge. Angler catch reflected differences in survival as well as catchability among taxa. Northern pike were caught at smaller sines and younger ages than other taxa. Gizzard shad (Dorosorna cepedianurn) dominated esocid diets for all taxa and age classes, followed by centrarchids and cyprinids. Prey length consumed increased linearly with esocid length; northern pike selected larger gizzard shad than either muskellunge or tiger muskellunge. These differences in population characteristics among esocids should influence mangernent and stockingprograms. Whereas northern pike maximize anglingopportunities, muskellunge probably wil l provide trophy fisheries. Although tiger muskellunge can be reared inexpensively, they appear to provide little recreational fishing in return. Nous avons compare la croissance, la survie, le regime alimentaire et [es prises sportives de maskinonge (Eso