The effect of temperature and humidity on the grazing activity of Deroceras reticulatum (O. F. Müller, 1774) and the damage to rape plants

Jan Kozłowski, e-mail: j.kozlowski@iorpib.poznan.pl

Department of Zoology, Institute of Plant Protection - National Research Institute, ojska Polskiego 28, 60-637 Poznań, Poland

Monika Jaskulska

Department of Zoology, Institute of Plant Protection - National Research Institute, ojska Polskiego 28, 60-637 Poznań, Poland

Tomasz Kałuski

Department of Zoology, Institute of Plant Protection - National Research Institute, ojska Polskiego 28, 60-637 Poznań, Poland

Maria Kozłowska

Department of Mathematical and Statistical Methods, University of Life Sciences,, Wojska Polskiego 28, 60-637 Poznań, Poland
Abstract

Winter rape is susceptible to damage caused by D. reticulatum (O. F. Müller) mainly in the early phases of the plants' development. The degree of damage and the size of yield losses depend on the slug population and the grazing activity, which are governed by many environmental factors. Laboratory studies were performed to analyse the rate and amount of damage to rape plants (2-3 leaf stage) caused by D. reticulatum, and the effect of temperature and soilhumidity on the slug's grazing activity. With increasing air temperature (up to 16°C) the amount of damage increased, but the effect was not lasting. The slugs were also active at low temperatures (+1°C), and although their grazing was less intense, the amount of damage after seven days could reach an average of 34%. In laboratory tests, the soilhumidity had no marked effect on the amount of damage done by the slugs.

Key words
D. reticulatum; winter rape; plant damage; temperature; humidity
References

Beyer W. N., Saari D. M. 1978. Activity and ecological distribution of the slug Arion subfuscus (Stylommatophora: Arionidae). Amer. Midl. Natural. 100: 359–367.

Carrick R. 1942. The grey field slug, Agriolimax agreste L., and its environment. Ann. Appl. Biol. 29: 43–55.

Choi Y. H., Bohan D. A., Powers S. J., Wiltshire C. W., Glen D. M., Semenov M. A. 2004. Modelling Deroceras reticulatum (Gastropoda) population dynamics based on daily temperature and rainfall. Agric. Ecos. Environ. 103: 519–525.

Choi Y. H., Bohan D. A., Potting R. J. P., Semenov M. A., Glen D. M. 2006. Individual based model of slug population and spatial dynamics. Ecol. Model. 190: 336–350.

Crawford-Sidebotham T. J. 1972. The influence of weather upon the activity of slugs. Oecologia 9: 141–154.

Frank T. 1998. Slug damage and numbers of the slug pests, Arion lusitanicus and Deroceras reticulatum in oilseed rape grown beside sown wildflower strips. Agric. Ecos. Environ. 67: 67–78.

Glen D. M., Moens R. 2002. Agriolimacidae, Arionidae and Milacidae as pests in west European cereals. In: Barker G. M. (ed.). Molluscs as crop pests. Landc. Res. Hamilton New Zealand. CABI Publishing, UK, pp. 271–300.

Glen D. M., Spaull A. M., Mowat D. J., Green D. B., Jackson A. W. 1993. Crop monitoring to assess the risk of slug damage to winter wheat in the United Kingdom. Ann. Appl. Biol. 122: 161–172.

Hommay G., Lorvelec O., Jacky F. 1998. Daily activity rhythm and use of shelter in the slugs Deroceras reticulatum and Arion distinctus under laboratory conditions. Ann. Appl. Biol. 132: 167–185.

Hunter P. J. 1966. The distribution and abundance of slugs on an arable plot in Northumberland. J. Anim. Ecol. 35: 543–557.

Jenna C. W., Bohan D. A., Choi Y. H., Conrad K. F., Semenov M. A. 2006. Use of an individual-based model to forecast the effect of climate change on the dynamics, abundance and geographical range of the pest slug Deroceras reticulatum in the UK. Global Change Biol. 12: 1643–1657.

Kozłowski J., Kozłowska M. 2002. Assessment of plant damages and intensity of Deroceras reticulatum (Müller) occurrence in winter oilseed rape and winter wheat. J. Plant Protection Res. 42: 229–237.

Kozłowski J., Kozłowski R. J. 2003. Zagrożenie rzepaku ozimego przez ślimaki (Gastropoda: Pulmonata) i metody ich zwalczania. Rośliny Oleiste – Oilseed Crops 24: 659–669.

Mellanby K. 1961. Slugs at low temperatures. Nature (London) 189: 984.

Moens R., Couvreur R., Cors F. 1992. Influence de la teneur en glucosinolates des variétés de colza d’hiver sur les dégats de limaces. Bull. Rech. Agr. Gemb. 27: 289–307.

Moens R., Glen D. M. 2002. Agriolimacidae, Arionidae and Milacidae as pests in west European oilseed rape. In: Barker G. M. (ed.). Molluscs as crop pests. Landc. Res. Hamilton New Zealand. CABI Publishing, UK, pp. 425–439.

Rollo C. D. 1982. The regulation of activity in populations of the terrestrial slug Limax maximus (Gastropoda: Limacidae). Res. Popul. Ecol. 23: 1–32.

Shirley M. D. F., Rusthon S. P., Port G. R., Young A. G., Bohan D. A., Glen D. M. 1998. Spatial modelling of slug population in arable crops. The BCPC Conference – Pest and Diseases 3: 1095–1102.

Shirley M. D. F., Rushton S. P., Young A. G., Port G. R. 2001. Simulating the long–term dynamics of slug populations: a process–based modelling approach for pest control. J. Appl. Ecol. 38: 401–411.

South A. 1992. Terrestrial slugs: biology, ecology and control. Chapman & Hall, London.

Wiktor A. 1989. Limacoidea et Zonitoidea nuda. Ślimaki pomrowiokształtne (Gastropoda: Stylommatophora). Fauna Polski 12. PWN, Warszawa.

Young A. G., Port G. R. 1989. The effect of microclimate on slug activity in the field. In: Henderson I. (ed.). Slugs and snails in world agriculture. BCPC, Guildford, UK, pp. 263–269.

Young A. G., Port G. R. 1991. The influence of soil moisture on the activity of Deroceras reticulatum (Müller). J. Moll. Stud. 57: 138–140.

Young A. G., Port G. R., Emmett B. J., Green D. I. 1991. Development of a forecast of slugs activity: models to relate slug activity to meteorological conditions. Crop Protect. 10: 413–415.

Young A. G., Port G. R., Green D. B. 1993. Development of a forecast of slug activity: validation of models to predict slug activity from meteorological conditions. Crop Protect. 12: 232–236.

Folia Malacologica (2011) 19: 267-271
First published on-line: 2011-12-11 00:00:00
http://dx.doi.org/10.2478/v10125-011-0017-4
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