Laserfiche WebLink
<br />1 <br /> <br /> <br /> <br />1 <br /> <br /> <br /> <br /> <br /> <br />3. Future Field and Laboratory Studies. Other studies that have not <br />been proposed in present Scopes of Work will also require captive-reared <br />endangered fish. For example, the following studies are important to the <br />Program but have not been submitted as Scopes of Work: <br />(A) Genetics and Systematics Studies of Presumptive Spawning or <br />Geographically Separated Stocks of Endangered Fishes in the Upper <br />Colorado River Basin <br />(B) Development of Mass-Marking Techniques for Identification of Fish <br />Lots from Pedigreed Matings After Stocking <br />(C) Develop Methods for Sex Determination to Reduce the Numbers of <br />Razorback Suckers, Bonytail, and Colorado Squawfish Needed for <br />Broodstocks <br />(D) Imprinting or Homing (Chemo-Reception) Studies in Bonytail, <br />Humpback Chub, and Colorado Squawfish <br />(E) Ecological Requirements and Habitat Use by Juvenile Razorback <br />Suckers, Bonytail, and Humpback Chubs <br />(F) Refinement of Ecological Requirements and Habitat Use by <br />Different Life Stages of the Four Endangered Colorado River <br />Fishes <br />(G) Importance of Flooded Bottomlands as Nursery Areas for the Four <br />Endangered Colorado River Fishes <br />(H) Size or Age of Fish (by Species) and Timing of Stocking to Ensure <br />Survival after Stocking <br />(I) Migratory Behavior Through fish Passage Facilities <br />(J) Various Studies to Enhance Culture Technology <br />- Develop Methods for Early Sexing of Live Captive-Reared <br />Endangered Fish to Reduce Numbers of Fish Required for <br />Broodstock Development <br /> <br /> <br />1 <br /> <br /> <br />t <br />- Cryopreservation of Gametes to Reduce the Number of Adult Fish <br />that must be maintained as Broodstocks <br />- Evaluation of the Number of Adult Fish Needed to Maintain <br />Genetic Diversity Through Pedigreed Matings <br />Evaluation of Advantages and Disadvantages of Different Types <br />of Culture Containers or Facilities Related to Hydraulics <br />- Feeding Rates and Nutritional Requirements of Endangered <br />Colorado River Fishes <br />- Develop Procedures for Control of Diseases that May Affect <br />Endangered Colorado River Fishes <br />41