Benefits of Dung Beetles (Coleoptera: Scarabaeidae) on Nutrient Cycling and Forage Growth in Alpaca Pastures

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dc.contributor.authorArnaudin, Mary Elinen
dc.contributor.committeechairTeutsch, Christopher D.en
dc.contributor.committeememberWatson, D. Wesleyen
dc.contributor.committeememberAbaye, Azenegashe Ozzieen
dc.contributor.committeememberWildeus, Stephanen
dc.contributor.departmentCrop and Soil Environmental Sciencesen
dc.date.accessioned2014-03-14T20:32:24Zen
dc.date.adate2012-04-17en
dc.date.available2014-03-14T20:32:24Zen
dc.date.issued2012-02-28en
dc.date.rdate2012-04-17en
dc.date.sdate2012-03-05en
dc.description.abstractAlpacas have been gaining prominence in the U.S. since the early 1980s. In pastures, dung beetle activity has been shown to enhance the degradation and incorporation of dung into the soil. The benefits of this activity have been quantified for cattle, but not for alpacas. The objectives of this study were to document the dung beetle species present in alpaca pastures, and to evaluate the impact of dung beetle activity on the growth of a common summer annual grass. In 2010 and 2011, dung beetle species present in alpaca pastures located at Virginia State University (VSU), were evaluated weekly from late May until late August. Eleven species of dung beetles were found, with Onthophagus taurus Schreber being the most dominant. In 2011, a greenhouse study was conducted at Virginia Tech's Southern Piedmont Research Station. Treatments included a control (no dung, no beetles), dung only, dung with five pairs of O. taurus, and dung that was allowed to be colonized in alpaca pastures at VSU. The addition of O. taurus and the field colonization both significantly increased total yield over the no dung control by 10% and 14%, respectively. These results indicate that healthy and diverse dung beetle communities occur in alpaca pastures in the mid-Atlantic region, and that the presence of these beetles would likely enhance nutrient cycling and pasture growth. However, it is important to remember that dung beetles are just one component of many found in a healthy grassland ecosystem, and the functions of these components are interrelated.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-03052012-152540en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03052012-152540/en
dc.identifier.urihttp://hdl.handle.net/10919/31419en
dc.publisherVirginia Techen
dc.relation.haspartArnaudin_ME_T_2012.pdfen
dc.relation.haspartArnaudin_ME_T_2012_fairuse.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectdung beetlesen
dc.subjectnutrient cycleen
dc.subjectalpacaen
dc.subjectcrabgrassen
dc.titleBenefits of Dung Beetles (Coleoptera: Scarabaeidae) on Nutrient Cycling and Forage Growth in Alpaca Pasturesen
dc.typeThesisen
thesis.degree.disciplineCrop and Soil Environmental Sciencesen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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