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| Web URL(s): | https://academic.oup.com/aesa/article/74/4/374/9785
Last checked: 29/07/19
Requires: PDF Reader |
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| Author(s): | Wegner, G. S.;
Niemczyk, H. D. |
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| Author Affiliation: | Entomology Department, Ohio Agricultural Research and Development Center, Wooster, OH |
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| Title: | Bionomics and phenology of Ataenius spretulus |
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| Source: | Annals of the Entomological Society of America. Vol. 74, No. 4, 1981, p. 374-384. |
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| Publishing Information: | Columbus, Ohio |
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| Keywords: | TIC Keywords: Agrostis; Poa annua; Pest profile; Poa pratensis; Ataenius spretulus
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| Geographic Terms: | Ohio |
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| Abstract/Contents: | The carabid Ataenius spretulus (Hald.) is an important pest of golf course greens, tees and fairways in Hamilton and Clermont Counties, Ohio. Eggs averaged 0.75 by 0.52 mm in size and were deposited in clusters of 11 to 12 in the thatch and thatch-soil interface. Head capsule widths of larvae averaged 0.5, 0.83, and 1.3 mm for the three instars, respectively. Mature larvae were ca. 8.5 mm long and possessed teges of 40 to 45 hamate setae on their rasters. The root-feeding larvae caused wilt or death of the host turf grasses Poa annua, P. pratensis and Agrostis sp. Pupae averaged 4.7 by 2.5 mm and occupied cells excavated by the larvae 1 to 8 cm deep in the soil. There were 2 generations per year in southern Ohio. Oviposition periods began in May and July; second-generation emergence occurred in August. The sex ratio favored females slightly. The dispersion pattern of infestations in sampling sites best conformed to a highly contagious or logarithmic distribution for all age-classes. Second-generation adults over wintered after copulating (89.7% of females inseminated), with survival of 93 +- 3%. Males and females survived winter with equal success. Population density of overwintering beetles reeached 264/929 cm2. A day-degree system of predicting Ataenius spretulus activity and development in the field was based on a flight activity threshold of 13 deg.C. Seasonal life-history of the insect was also correlated with plant phenology. Oviposition of first-generation eggs occurred after 100 to 150 day-degrees C when Spiraea vanhouttei and Aesculus hippocastanum reached full bloom and Robinia pseudacacia began to blossom. The appearance of second generation eggs occurred after 650 to 710 day-degrees C when Hibiscus syriacus began to blossom. Generation periods of 60 to 70 days were observed in the field, where soil temperatures approached or exceeded 30 deg.C. The incidence of milky disease at sampling sites ranged from < 1% in May and June to 29% in October. |
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| Language: | English |
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| References: | Unknown |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wegner, G. S., and H. D. Niemczyk. 1981. Bionomics and phenology of Ataenius spretulus. Ann. Entomol. Soc. Am. 74(4):p. 374-384. |
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| Web URL(s):
https://academic.oup.com/aesa/article/74/4/374/9785
Last checked: 29/07/19
Requires: PDF Reader |
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MSU catalog number: QL 461 .E6 |
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