Laserfiche WebLink
<br />002738 <br /> <br />. Develop/refine rearing and handling techniques. Rearing and handling techniques <br />will be developed or refined as needed to meet production goals. At the present time, <br />rearing teclmiques appear adequate and the species is readily handled (Hamman 1982). <br />However, improvements for rearing and handling may be necessary to meet an expanded <br />production schedule. <br />. Establish production goals in terms of numbers and sizes that are needed for <br />reintroduction or augmentation. Production goals and such details as sizes at <br />stocking should be based on area and complexity of selected stocking sites, goals of the <br />stocking program, and presence of deterrents to survival such as predatorslcompetitors. <br />. Implement and evaluate reintroductions and augmentations. Habitats that appear <br />suitable for supporting a self-sustaining population of humpback chub, but are presently <br />either barren or support low densities, may benefit from the stocking of hatchery-produced <br />fish <br />. Identify areas for reintroduction. As new information is obtained, criteria for <br />identifying potential habitats for establishing and maintaining humpback chub <br />populations can be determined Using these criteria, suitable habitats for reintroduction <br />or augmentation actions can be identified and prioritized <br />. Restore and prepare stocking sites as needed for reintroduction or augmentation. <br />Where necessary. potential sites for reintroduction or augmentation will be restored or <br />prepared to maximize the chances for success in stocking humpback chubs. This action <br />may include physical habitat manipulation or biological actions, <br />. Develop and implement a plan for stocking and monitoring activities. When a <br />reintroduction or augmentation program is defined, and implementation plan will be <br />developed for stocking fish and evaluating success of the effort. The plan will outline <br />criteria and methods to be used in the program, <br />. Determine optimum size and time for stocking. It is welllmown that survival of <br />stocked fish increases with the size of the fish Therefore, the optimum size needed for <br />acceptable survival of stocked humpback chubs must be determined In addition, the <br />time of stocking may be critical to survival and will have to be determined <br />. Determine stocking rates and schedules required to reestablish humpback chub <br />populations. In conjunction with the previous task, the number of fish to be stocked by <br />area and the duration of stocking must be determined to provide a reasonable <br />expectation of success. Monitoring of humpback chub populations will provide the <br />needed information Generally, high stocking densities over an extended period may be <br />necessary to ensure recovery success. Success will be achieved when the respective <br />populations are sustained without further introductions. <br />. Establish a monitoring program to evaluate the success of reintroductions or <br />augmentations. Systematic monitoring of stocked fish will by an essential element in <br />reestablishing and maintaining humpback chub populations. Monitoring will be used <br />to determine if the populations are self-sustaining. <br /> <br />No time frames for completion of these activities were specified in the recovery plan for the <br />humpback chub. <br /> <br />No specific areas for reintroduction were identified in the second revision to the humpback chub <br />recovery plan. However, in March, 1994, the U.S. Fish and Wildlife Service designated 198 river <br /> <br />8 <br />