Marshall News Releases: February, 1955

These news releases were written by and distributed by Marshall during the period indicated in the title.https://mds.marshall.edu/marshall_news_releases_archives/1025/thumbnail.jp

La influencia de los extractos de semillas de Rhus coriaria sobre la resistencia genética de Aspergillus amstelodami

Introduction: This study aims to investigate the safe use of Rhus coriaria seed extracts (water and ethanol) genetically on fungi Aspergillus amstelodami because the extensive use of plant in many pharmaceutical and food fields. Materials and methods: In this study A1 (Wa1) strain of the fungus A.spergillus amstelodami was used in all genetic testing, Rhus coriaria seeds were obtained from the local markets and two types of extracts were prepared (water and ethanol extracts of Rhus coriaria seeds), two types of resistance mutants were isolated both spontaneous and induced by using mutation agent (nitrous acid). Results and Discussion: In this study 18 spontaneous resistance mutation were isolated in frequency 4.26×10-5 and 96 induced mutations were induced by nitrous acid in Frequency39.76×10-5at (MIC) 16 mg / ml of the ethanol extract, and 22 spontaneous mutations were isolate in frequency 4.59×10-5 and 91 nitrous acid induced mutation with an average recurrence 37.36×10-5at (MIC) 25 mg / ml of water extract. Conclusion: We conclude that presence of resistant ability in A. amstelodami toward Rhus coriaria water and ethanol seeds extracts. Therefore, we suggest further thorough studies to detect the activity to plant extract in order to be use in agricultural pest control

Insect (Arthropoda: Insecta) Composition in the Diet of Ornate Box Turtles (Terrapene ornata ornata) in Two Western Illinois Sand Prairies, with a New State Record for Cyclocephala (Coleoptera: Scarabaeidae)

A study of fecal samples collected over a two-year period from juvenile ornate box turtles (Terrapene ornata ornata Agassiz) revealed diets consisting of six orders of insects representing 19 families. Turtles were reared in captivity from eggs harvested from local, wild populations, and released at two remnant prairies. Identifiable insect fragments were found in 94% of samples in 2013 (n=33) and 96% in 2014 (n=25). Frequency of occurrence of insects in turtle feces is similar to results reported in previous studies of midwestern Terrapene species. A comparison of insect composition presented no significant difference between release sites. There is no significant difference in consumed insect species between turtles released into or outside of a fenced enclosure at the same site. Specimens of Cyclocephala longula LeConte collected during this study represent a new state record for Illinois

Flora of Emmet County, Iowa

Emmet County lies in the northwestern part of the state, bordering on Minnesota, and has an area of 408 square miles. Its surface waters mostly find an outlet in the east and west forks of the Des Moines River, both of which flow through the County in a southeasterly direction. A small part of the northeastern township, near Iowa Lake, lies in the drainage area of the Minnesota River, and its flora, therefore, is represented in Prof. MacMillan\u27s admirable volume, The Metaspermae of the Minnesota Valley

SPATIAL ECOLOGY AND HABITAT USE OF THE WESTERN MASSASAUGA (SISTRURUS TERGEMINUS) IN NEBRASKA

We used radiotelemetry during 2004 and 2005 to investigate seasonal movements and habitat use and to improve our understanding of how land management practices were affecting Western Massasauga (Sistrurus tergeminus) populations in Nebraska. We found Western Massasaugas to brumate in crayfish burrows 100% of the time, and spring emergence occurred during March - April. The longest movements occurred during May when snakes were moving away from brumation sites to summer habitat, after which movements decreased until a second peak in August. We did not find significant differences between male and female activity area, range length, total distance moved, daily movement, or distance from spring and fall brumation sites. However the core activity range of females was significantly less than that of males. During the active season, grassland habitat was used 75.6% of the time compared to habitats of grassland-shrubs (10.7%), hydrophilic vegetation (9.1%), woodlands (3.1%), and shrublands (1.5%). Identifying variations in a species spatial ecology is important for achieving long-term conservation goals because life history events, resource availability, and land management practices may have an effect on seasonal movements and habitat use. The results of our study demonstrate the need for, and some of the necessary data for, improved land management planning in order to meet conservation needs of the Western Massasauga in Nebraska

Chemical Control of Woody Plants

Many woody plants are problems in rangeland, along roadsides, under utility lines, and along irrigation and drainage ditches. It is often desirable to control these plants on rights-of-way, but it is advisable to study the situation before controlling them on rangeland. Chemicals used to control undesirable woody species may also kill desirable range £orbs and woody plants. One should be certain that the range forage will be improved before he does any large-scale spraying. It may be advisable to conduct a few small-area trials before the entire range is treated. To make spraying pay on rangeland it is desirable to follow good range management so that grasses will take over as the woody plants die out. Even though the grasses are present, they will not spread after the woody plants have been killed except under light grazing or no grazing conditions. Many of the grass plants should be allowed to produce seed. In South Dakota research has been limited to the use of chemicals for the control of buckbrush, sagebrush and poison ivy. Therefore, most of the information presented was obtained from the North Central Weed Control Conference and from states that have more woody plant problems than South Dakota. Most of the suggestions offered here have not been tried extensively in South Dakota, but they have proved to be satisfactory under similar conditions

The BG News November 13, 2006

The BGSU campus student newspaper November 13, 2006. Volume 97 - Issue 58https://scholarworks.bgsu.edu/bg-news/8675/thumbnail.jp