Temporal and spatial patterns of abundance of age 0 threadfin shad (Dorosoma petenense) in Overton Arm, Lake Mead

Temporal and spatial patterns of age 0 threadfin shad (Dorosoma petenense) abundance and growth, in the Overton Arm of Lake Mead, were examined to evaluate the effects of resource availability on the young fish. This was part of the Lake Mead Fertilization Project, designed to assess feasability of increasing survivorship of juvenile shad by boosting phosphate, thereby increasing algal and zooplankton biomass, during the shad spawning period. Shad are the primary forage base for the striped bass (Morone saxatilis) and black bass (Macropterus salmoides); Weekly samples were taken from June to mid-August, in 1988 and 1989. Depth series samples were taken with a Tucker Trawl at some stations and dates. Chlorophyll {dollar}\alpha{dollar} concentrations and Daphnia pulex egg/adult female ratios, were also determined for some stations and dates; There was an apparent link between resource availability and young shad abundance. There was little temporal or spatial variation in mean length. (Abstract shortened with permission of author.).

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Biological Science

Grantor dc:publisher

University of Nevada, Las Vegas

Year

1990

Author dc:creator

• Pelle, William Lee

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/101

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-1100