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| Web URL(s): | https://academic.oup.com/ee/article/16/3/752/383579/Seasonal-History-of-Bluegrass-Billhug-Sphenophorus
Last checked: 02/17/2017
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Hansen, James D. |
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| Author Affiliation: | Crops Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Logan, Utah |
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| Title: | Seasonal history of bluegrass billbug, Sphenophorus parvulus (Coleoptera: Curculionidae), in a range grass nursery |
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| Source: | Environmental Entomology. Vol. 16, No. 3, June 1987, p. 752-756. |
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| Publishing Information: | College Park, MD: Entomological Society of America |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Elymus repens; Feeding preferences; Insect profile; Insect surveys; Instar; Life cycle; Population dynamics; Pseudoroegneria spicata; Sphenophorus parvulus
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| Abstract/Contents: | "Field data on preimaginal survival of bluegrass billbug, Sphenophorus parvulus Gyllenhal, were collected weekly for three summers, 1982-84, from a hybrid wheatgrass, Elytrigia repens (L.) Nevski x Pseudoroegneria spicata (Pursh) Löve, nursery near Kaysville, Utah. Population estimates were based on stem samples for early life stages and soil samples for later life stages. Locations of adult feeding and oviposition on host plants were the same. Seasonal populations were similar in all years except for a rapid decline of late instars in 1983. There was much overlapping of life stages, with early instars extending late into the season. Greatest mortality was during the egg stage (40-75%). Larval mortality was high (49-63%) for the root-feeding middle and late instars. Pupal mortality was low (0-16%) for all seasons. No predators, parasites, or pathological agents were found. Implications of bluegrass billbug successfully attacking an unnatural host, a rangeland wheatgrass, are discussed." |
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| Language: | English |
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| References: | 22 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hansen, J. D. 1987. Seasonal history of bluegrass billbug, Sphenophorus parvulus (Coleoptera: Curculionidae), in a range grass nursery. Environ. Entomol. 16(3):p. 752-756. |
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| Web URL(s):
https://academic.oup.com/ee/article/16/3/752/383579/Seasonal-History-of-Bluegrass-Billhug-Sphenophorus
Last checked: 02/17/2017
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2206896a |
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