Report of Recommendations to State University of Iowa, June 30, 2002

State University Audit Report

Combined Report of Recommendations to the Eight Judicial District Departments of Correctional Services, June 30, 2002

State Agency Audit Report - Combined Report

Report of Recommendations to the Iowa Judicial Branch - County Clerks of District Courts, June 30, 2002

State Agency Audit Report

Report of Recommendations to the Iowa Department of Human Services, Central Distribution Center, June 30, 2002

State Agency Audit Report

Report of Recommendations to the Iowa Department of Cultural Affairs, June 30, 2002

State Agency Audit Report

Report of Recommendations to the Iowa Department of Human Rights, June 30, 2002

State Agency Audit Report

Influence of the number of queens on nestmate recognition and attractiveness of queens to workers in the Argentine ant, Iridomyrmex humilis (Mayr)

To investigate the influence of the number of queens per colony on nestmate recognition in Iridomyrmex humilis, comparative assays were performed to study the attraction of workers to queens. These assays demonstrated that a phenomenon of recognition is superimposed on the attraction of workers to queens. Workers could discriminate non-nestmate queens from their nestmate queen to which they were significantly more attracted. This discrimination is probably based on the learning by workers of queen and colony odour. The level of attraction of workers to non-nestmate queens was similar in monogynous and polygynous colonies, whereas the level of attraction of workers to nestmate queens was significantly lower in polygynous colonies. This difference in the level of attraction of workers to nestmate queens almost certainly resulted from a lower efficiency in nestmate recognition in polygynous colonies. It is hypothesized that the mixture of several pheromonal sources produced by less related individuals in polygynous colonies may result in a less distinct colony odour than in monogynous colonies. The results are discussed with regard to some implications of polygyny and particularly to the loss of intercolonial aggression in I. humilis as well as in other polygynous ant species

Report of Recommendations to the Iowa Workforce Development on the Review of Selected General Controls, May 30, 2003 - June 13, 2003

State Agency Audit Report

Report of Recommendations to the Iowa Department of Transportation on the Review of Selected General and Application Controls over the Human Resource Information System, May 27, 2003 - June 30, 2003

State Agency Audit Report

Life-history consequences of adaptation to larval nutritional stress in Drosophila.

Many animal species face periods of chronic nutritional stress during which the individuals must continue to develop, grow, and/or reproduce despite low quantity or quality of food. Here, we use experimental evolution to study adaptation to such chronic nutritional stress in six replicate Drosophila melanogaster populations selected for the ability to survive and develop within a limited time on a very poor larval food. In unselected control populations, this poor food resulted in 20% lower egg-to-adult viability, 70% longer egg-to-adult development, and 50% lower adult body weight (compared to the standard food on which the flies were normally maintained). The evolutionary changes associated with adaptation to the poor food were assayed by comparing the selected and control lines in a common environment for different traits after 29-64 generations of selection. The selected populations evolved improved egg-to-adult viability and faster development on poor food. Even though the adult dry weight of selected flies when raised on the poor food was lower than that of controls, their average larval growth rate was higher. No differences in proportional pupal lipid content were observed. When raised on the standard food, the selected flies showed the same egg-to-adult viability and the same resistance to larval heat and cold shock as the controls and a slightly shorter developmental time. However, despite only 4% shorter development time, the adults of selected populations raised on the standard food were 13% smaller and showed 20% lower early-life fecundity than the controls, with no differences in life span. The selected flies also turned out less tolerant to adult malnutrition. Thus, fruit flies have the genetic potential to adapt to poor larval food, with no detectable loss of larval performance on the standard food. However, adaptation to larval nutritional stress is associated with trade-offs with adult fitness components, including adult tolerance to nutritional stress.

Report of Recommendations to the Information Technology Department, June 30, 2003

State Agency Audit Report

Report of Recommendations to the Iowa Department of Commerce, June 30, 2003

State Agency Audit Report

Report of Recommendations to the Iowa Department of Inspections and Appeals, June 30, 2003

State Agency Audit Report

Report of Recommendations to the Iowa Department of Revenue and Finance, June 30, 2003

State Agency Audit Report

Report of Recommendations to the Iowa School for the Deaf, June 30, 2003

Other Audit Reports - Schools