caa a22 4500 397571828 CHVBK 20180308164843.0 cr unu---uuuuu 161202e19960201xx s 000 0 eng 10.1093/ee/25.1.48 doi (NATIONALLICENCE)oxford-10.1093/ee/25.1.48 Aerial Spores of Neozygites fresenii (Entomophthorales: Neozygitaceae): Density, Periodicity, and Potential Role in Cotton Aphid (Homoptera: Aphididae) Epizootics [Elektronische Daten] [D. C. Steinkraus, R. G. Hollingsworth, G. O. Boys] This is the first report on densities of aerial spores of a Neozygites species and one of only a few reports on field dispersal of aerial spores of an entomopathogenic fungus. Densities of primary conidia of Neozygites fresenii (Nowakowski) Batko in the air over cotton fields during epizootics in the cotton aphid, Aphis gossypii Glover showed a clear diel periodicity. Peak discharge of primary conidia occurred between 0100 and 0500 hours. Few aerial spores were present between 0900 and 2400 hours. Densities of primary conidia as high as 58,327/m3 of air were recorded at 0300 hours on 24 July 1993 during an epizootic in a commercial cotton field in St. Francis County, Arkansas. Microscope slides placed in the field to collect N. fresenii spores indicated that significantly higher spore numbers were collected 30.5 cm from tile soil surface than 61, 122, or 183 cm from the surface. Capilliconidia were also present in the air, but in most cases in much lower densities than primary conidia. Rotorod samplers are relatively inexpensive, portable, and can be powered with a small battery. Rotorod samplers may be more practical than Burkard samplers for monitoring aerial spores over cotton fields, unless accurate hourly data over long periods are required. © 1996 Entomological Society of America Population Ecology nationallicence Aphis gossypii nationallicence Neozygites fresenii nationallicence cotton nationallicence aerial spores nationallicence epizootics nationallicence Steinkraus D. C. Department of Entomology, 321 AGRI, University of Arkansas, Fayetteville, AR 72701 aut Hollingsworth R. G. Department of Entomology, 321 AGRI, University of Arkansas, Fayetteville, AR 72701 aut Boys G. O. Department of Entomology, 321 AGRI, University of Arkansas, Fayetteville, AR 72701 aut Environmental Entomology Oxford University Press 25/1(1996-02-01), 48-57 0046-225X 25:1<48 1996 25 ee https://doi.org/10.1093/ee/25.1.48 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.1.48 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Steinkraus D. C. Department of Entomology, 321 AGRI, University of Arkansas, Fayetteville, AR 72701 aut NATIONALLICENCE 700 1- Hollingsworth R. G. Department of Entomology, 321 AGRI, University of Arkansas, Fayetteville, AR 72701 aut NATIONALLICENCE 700 1- Boys G. O. Department of Entomology, 321 AGRI, University of Arkansas, Fayetteville, AR 72701 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/1(1996-02-01), 48-57 0046-225X 25:1<48 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford