Laserfiche WebLink
We fished with pulsed DC current, usually generating between <br />300-600 volts and 4 to 6 amps. Shocking time in each sampling <br />reach was recorded and used to determine the rate of capture per <br />trip and species. All stunned fish were netted and placed in the <br />live-well on the raft. At the end of the sampling reach, <br />specimens were identified, measured (both total length [TL] and <br />standard length [SL]), weighed, sexed, and returned alive to the <br />water. All adults of target species and a sub-sample of <br />flannelmouth sucker (Catostomus latipinnis), bluehead sucker <br />(Pantosteus discobolus), and channel catfish (Ictalurus <br />punctatus) were tagged with unique number New Mexico Department <br />of Game and Fish (NMGF) Carlin tags and released. This is the <br />..? <br />same procedure that was followed in 1987. <br />In 1987, we found relatively few fish while sampling deep <br />pools and eddies by electrofishing. To determine if this was due <br />to inefficient collecting methods, we fished two 30 m trammel <br />nets on two occasions in March and once in April. These nets <br />were left in the pools/eddies for two to 11 hours (usually <br />overnight) before being removed. <br />Most of the changes in the sampling regime that we made from <br />1987 to 1988 were directed towards data procurement during <br />seining. In 1988, we eliminated the requirement of maintaining <br />discrete first and second seine haul samples and expanded the <br />definition of habitats which could be sampled. The mean number <br />of fish per seine haul and catch per unit effort (CPUE), using <br />area seined, were determined (Appendix I). <br />7