SUSITNA AQUATIC STUDIES tte I 4D53 " DIVISIONS OF SPORT AND COMMERCIAL FISHERIES PUBLICATIONS ANNOTATED BIBLIOGRAPHY

• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Indian River; Fourth of July; Chul; Indian; Keta; Sockeye; Pink salmon
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.645.6305; http://www.arlis.org/docs/vol1/Susitna/40/APA4053.pdf

Fishwheels operating in the lower portion of the middle Susitna River (RM 101.7 and RM 104.0) provided migrational timing, age-length-sex composition and abundances levels by salmon species. Chum (Oncorhynchus keta) and pi nk (Q. gorbuscha) salmon domina ted the catches. The major pink salmon migration occurred during the last week of July and the first week of August, and correspondingly for chum salmon in the second and third weeks of August. Three- and four-year old fish comprised 81.6 percent of the chum salmon catch. Coho salmon were abundant in the river from mid-August to mid-September. Age samples indicated that coho escapement was predominantly four-year old fish. Twenty-one sloughs were identified on the Susitna River between the Chul itna River confl uence and Devi 1 Canyon and surveyed for the first time: rearing coho (0. kisutch) fry were observed in twelve of these, and spawning chum-salmon in nine of the sloughs. In four of the sloughs, sockeye (0. nerka) salmon co-spawned with chum salmon. --- Pink salmon spawned in Indiar River, Fourth and Gold creeks; chum salmon also spawned in exceptions of Lane and Gold creeks. of July, Lane, Portage, these streams, with the Pink salmon spawned primarily during the first three weeks of August. The major period of chum spawning occurred in the streams from mid-August to mid-September, and in the sloughs during the first three weeks of September. Spawning coho salmon were recorded in. Portage, Whiskers, and Chase creeks.