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10 <br />also was sampled in November 1982. Arizona Bay was sampled only in <br />January during 1983, but observations on spawning activites in both <br />major areas were conducted monthly throughout the entire season. <br />3.3 Trammel Netting <br />Routine netting was conducted with trammel nets 91.4 m tong and 1.8 <br />m deep. The trammel nets had inner wall bar measures of 3.8 cm and outer <br />wall bar measures of 25.4 cm. Experimental gill and trammel nets were <br />also used on two sampling dates. These nets were 45.7 m long and 1.8 m <br />deep, and mesh sizes ranged from .6 cm to 3.8 cm. <br />Nets were intentionally set in spawning areas or areas that <br />appeared suitable for spawning. These areas included coves, point bars, <br />and open basin shoreline areas. Nets were most often set perpendicular <br />from the shore along the bottom. Nets were set for 12 to 20 hours, and <br />efforts were concentrated on twilight and evening hours. Nets were run <br />every four hours, cleared of fish and reset during each sampling period. <br />Catch rates are expressed as number of fish per 100 m2 net per 24 <br />hours. <br />3.4 Measurements <br />Standard length (snout to end of hypural plate), fork length (snout <br />to fork of caudal fin), total length (snout to tip of compressed caudal <br />fin), and weight were recorded for each razorback sucker and bonytail <br />chub collected during netting. Condition factors were calculated using <br />the formula: KF=WT3/TL X 100,000. <br />More extensive measurements were made on 334 live razorback suckers <br />collected from Tequila Cove, Six Mile Coves, and Arizona Bay and on 14