4,635 research outputs found
Results of the 2001 Becoming an Outdoor-Woman Survey
INHS Human Dimensions Research Program and Illinois Department of Natural Resourcesunpublishednot peer reviewedOpe
1999-00 Illinois Trapper Survey Report
Federal Aid Project Number W-112-R-9, Job Number 101.2, Wildlife Restoration FundReport issued on: January 5, 200
Results of the 2003-2004 Illinois Youth Hunter Survey
Federal Aid Project Number W-112-R-13, Job Number 103.1, Wildlife Restoration Fund, July
1, 2003 - Sept. 30, 2004Report issued on: December 22, 200
IU PTI/UITS Research Technologies Annual Report: FY 2014
This Fiscal Year 2014 (FY2014) report outlines IU community accomplishments using IU's cyberinfrastructure, as they relate to several IU Bicentennial Strategic Plan goals and ongoing principles of excellence. The report includes research and discovery highlights
Parallel developmental genetic features underlie stickleback gill raker evolution.
BackgroundConvergent evolution, the repeated evolution of similar phenotypes in independent lineages, provides natural replicates to study mechanisms of evolution. Cases of convergent evolution might have the same underlying developmental and genetic bases, implying that some evolutionary trajectories might be predictable. In a classic example of convergent evolution, most freshwater populations of threespine stickleback fish have independently evolved a reduction of gill raker number to adapt to novel diets. Gill rakers are a segmentally reiterated set of dermal bones important for fish feeding. A previous large quantitative trait locus (QTL) mapping study using a marine × freshwater F2 cross identified QTL on chromosomes 4 and 20 with large effects on evolved gill raker reduction.ResultsBy examining skeletal morphology in adult and developing sticklebacks, we find heritable marine/freshwater differences in gill raker number and spacing that are specified early in development. Using the expression of the Ectodysplasin receptor (Edar) gene as a marker of raker primordia, we find that the differences are present before the budding of gill rakers occurs, suggesting an early change to a lateral inhibition process controlling raker primordia spacing. Through linkage mapping in F2 fish from crosses with three independently derived freshwater populations, we find in all three crosses QTL overlapping both previously identified QTL on chromosomes 4 and 20 that control raker number. These two QTL affect the early spacing of gill raker buds.ConclusionsCollectively, these data demonstrate that parallel developmental genetic features underlie the convergent evolution of gill raker reduction in freshwater sticklebacks, suggesting that even highly polygenic adaptive traits can have a predictable developmental genetic basis
2019 Illinois Turkey Hunter And Landowner Report
A random sample was drawn of 5,000 Illinois residents with a 2019 Illinois spring turkey hunting permit. The sample included 3,000 turkey hunters with a spring turkey shotgun/archery permit (general hunters) and 2,000 hunters with a landowner spring turkey shotgun/archery permit (landowner hunters). Selected individuals were mailed an 8-page self-administered questionnaire designed to understand attitudes, preferences, and behaviors of turkey hunters in Illinois. We received 2,932 questionnaires, 2,733 of which were usable, for a 57% response rate. Turkey hunters on average hunted 4.5 days during the 2019 spring turkey season and harvested an average of .4 turkeys per hunter. Most turkey hunters were satisfied with their overall turkey hunting experience (76%). Fifty percent of respondents believed that the turkey population in the areas that they hunted most often for turkey was too low. Most hunters only hunted on private land during the 2019 spring turkey season (82%). On average, turkey hunters encountered 1.0 other hunters (that were not part of their party) on their most crowded day in the field during the 2019 spring turkey season. Most hunters indicated there was not too much competition from other hunters where they hunted (70%). Enjoying nature and the outdoors, being out in the woods, and experiencing the challenge of the hunt were the most important factors for respondents during the spring turkey season. Only 1% of respondents (n = 30) hunted turkeys on an Illinois Recreational Access Program (IRAP) property during the 2019 spring turkey season. Sixteen percent of respondents indicated that they took a youth (17 years old or younger) hunting during the 2019 spring turkey season.Federal Aid Project Number W-112-R-28unpublishednot peer reviewedOpe
Dietary patterns of school-age children in Scotland : association with socio-economic indicators, physical activity and obesity
Peer reviewedPublisher PD
2014-2015 Illinois Trapper Report: Harvest, Effort, and Marketing Practices
Wesampled1,200 purchasersof2014resident Illinois trapping licensesfrom the Illinois Department of Natural Resources licensing database.Licensees were mailed a 4-page questionnaire, and we received 710 (58%) questionnaires.Trapping license sales increased 7%from 2013 (7,782licenses)to 2014 (8,303).Trappers set an average of 16.1traps for an average of 23.1days or nights during the 2014-2015season,and harvested an estimated179,978furbearers (down28% from the 251,178harvested in 2013-2014).An estimated 101,035raccoons (Procyon lotor) were trapped during the 2014-2015Illinois trapping season, adecreaseof33%from the estimated 151,367trapped during the 2013-2014 season.Muskrat(Ondatra zibethicus) harvest was the next highest at33,860muskrats(4% increasefrom the previous year).IDNRDivision of Wildlife U.S. Fish & Wildlife ServiceFederal Aid Project Number W-112-R-24unpublishednot peer reviewe
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Has River use in the Mississippi River Basin changed Following the Invasion of Asian Carp?
Abstract
Invasive bighead (Hypophthalmichthys nobilis) and silver carp (H. molitrix) are two federally injurious fishes, commonly referred to as Asian carp, found in the Mississippi River Basin. We hypothesized that silver carp, in particular, may negatively influence river users due to their tendency to leap from the water when startled. We tested whether Asian carp have influenced stakeholder use in a low fish density Mississippi River city and three high fish density cities of the Illinois River between June 2010 and July 2011 using intercept surveys. Our response rate was 39 %. Our results suggest that most respondents use these rivers for recreational purposes. Boating, swimming, and aesthetic uses of the Illinois River changed between 2010 and 2011. Nearly three quarters of Illinois River town users who have observed an Asian carp jump have been hit by one. Our findings may help susceptible river towns prepare for social, cultural, and economic changes due to these invasive fishes
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