Iowa Farm and Rural Life Poll: 2015 Summary Report

The Iowa Farm and Rural Life Poll is an annual survey of Iowa farmers. The survey project collects and disseminates information on issues of importance to agricultural stakeholders across Iowa and the Midwest. The Farm Poll has been conducted every year since its establishment in 1982. It is the longestrunning survey of its kind in the nation. Iowa State University (ISU) Extension and Outreach, the Iowa Agriculture and Home Economics Experiment Station, the Iowa Department of Agriculture and Land Stewardship, and the Iowa Agricultural Statistics Service are partners in the Farm Poll. The information gathered through the annual survey is used to inform the development and improvement of research and extension programs and is used by local, state, and national leaders in their decisionmaking processes. We thank the many farm families who responded to this year’s survey and appreciate their continued participation.https://lib.dr.iastate.edu/extension_communities_pubs/1027/thumbnail.jp

Olfactory biology of two vertebrate species: Central projection of a subpopulation of olfactory sensory neurons in the sea lamprey (Petromyzon marinus) and the production of putative reproductive pheromone(s) in the round goby (Neogobius melanostomus)

Both the sea lamprey (Petromyzon marinus) and the round goby (Neogobius melanostomus) are two fish species that invaded the Great Lakes; they likely use sex pheromones that are fundamental to their reproductive success. Understanding pheromone communication could potentially lead to population control of these two species. In the larval sea lamprey, topographic and spatial projections from the olfactory sensory neurons (OSNs) to the olfactory bulb were studied. These projection patterns may be an initial step in organizing olfactory odourant information. Studies in the round goby indicate that the reproductively mature male releases 5beta-reduced androgenic steroidal pheromone(s) that attracts ripe females. Steroid biosynthesis of these compounds was studied in both the testes and the seminal vesicles. The testis contains specialized glandular tissue that may be responsible for the production of pheromonal 5beta-reduced androgens. The seminal vesicle may produce and store pheromonal steroids; excretions from this organ may serve as a vehicle for pheromones to enter aqueous environment. (Abstract shortened by UMI.)Dept. of Biological Sciences. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2004 .A73. Source: Masters Abstracts International, Volume: 43-03, page: 0761. Adviser: B. Zielinski. Thesis (M.Sc.)--University of Windsor (Canada), 2004