Lottery Action, April 5-18, 2004, Vol. 11, no. 7

Iowa Lottery Authority Retailer Information Newsletter

Lottery Action, May 3-16, 2004, Vol. 11, no. 9

Iowa Lottery Authority Retailer Information Newsletter

Lottery Action, June 7-20, 2004, Vol. 11, no. 11

Iowa Lottery Authority Retailer Information Newsletter

Lottery Action, September 22-October 5, 2003, Vol. 10, no. 19

Iowa Lottery Authority Retailer Information Newsletter

Lottery Action, October 20 - November 2, 2003, Vol. 10, no. 21

Iowa Lottery Authority Retailer Information Newsletter

Lottery Action, December 15, 2003 - January 4, 2004, Vol. 10, no. 25

Iowa Lottery Authority Retailer Information Newsletter

Fishery-induced selection on an Alpine whitefish: quantifying genetic and environmental effects on individual growth rate

Size-selective fishing, environmental changes and reproductive strategies are expected to affect life-history traits such as the individual growth rate. The relative contribution of these factors is not clear, particularly whether size-selective fishing can have a substantial impact on the genetics and hence on the evolution of individual growth rates in wild populations. We analysed a 25-year monitoring survey of an isolated population of the Alpine whitefish Coregonus palaea. We determined the selection differentials on growth rate, the actual change of growth rate over time and indicators of reproductive strategies that may potentially change over time. The selection differential can be reliably estimated in our study population because almost all the fish are harvested within their first years of life, i.e. few fish escape fishing mortality. We found a marked decline in average adult growth rate over the 25 years and a significant selection differential for adult growth, but no evidence for any linear change in reproductive strategies over time. Assuming that the heritability of growth in this whitefish corresponds to what was found in other salmonids, about a third of the observed decline in growth rate would be linked to fishery-induced evolution. Size-selective fishing seems to affect substantially the genetics of individual growth in our study population.

Stick insect genomes reveal natural selection's role in parallel speciation.

Natural selection can drive the repeated evolution of reproductive isolation, but the genomic basis of parallel speciation remains poorly understood. We analyzed whole-genome divergence between replicate pairs of stick insect populations that are adapted to different host plants and undergoing parallel speciation. We found thousands of modest-sized genomic regions of accentuated divergence between populations, most of which are unique to individual population pairs. We also detected parallel genomic divergence across population pairs involving an excess of coding genes with specific molecular functions. Regions of parallel genomic divergence in nature exhibited exceptional allele frequency changes between hosts in a field transplant experiment. The results advance understanding of biological diversification by providing convergent observational and experimental evidence for selection's role in driving repeatable genomic divergence.

Tackling self-selection into treatment and self-selection into the sample biases in VAA research

Self‐selection into treatment and self‐selection into the sample are major concerns of VAA research and need to be controlled for if the aim is to deduce causal effects from VAA use in observational data. This paper focuses on the methodological aspects of VAA research and outlines omnipresent endogeneity issues, partly imposed through unobserved factors that affect both whether individuals chose to use VAAs and their electoral behavior. We promote using Heckman selection models and apply various versions of the model to data from the Swiss electorate and smartvote users in order to see to what extent selection biases interfere with the estimated effects of interest.

Lottery Action, July 12-25, 2004, Vol. 11, no. 13

Iowa Lottery Authority Retailer Information Newsletter

Community Action In Iowa Annual Report, 2000

Iowa Division of Community Action Agencies Annual Report

Community Action In Iowa Annual Report, 2001

Iowa Division of Community Action Agencies Annual Report

Community Action In Iowa Annual Report, 2002

Iowa Division of Community Action Agencies Annual Report

Community Action In Iowa Annual Report, 1999

Iowa Division of Community Action Agencies Annual Report