Abstract
Measures used to control Norway rats (Rattus norvegicus Berk.) on farms are frequently unsuccessful due to poor bait uptake. In pest-control operations, rats always have the choice between the farm’s own food resources and the bait. In this study we analysed the individual selection behaviour in two rat colonies when the rats were offered a familiar bait which matched the food on the farm and a bait which was unknown. Bait stations equipped with video and transponder technology were installed in two differently structured areas on a farm. In four experiments, a familiar foodstuff (rolled oats) was put out for 3 days, and then at one of the stations, a test bait was put out for 4 days. The relative palatability of the test baits was known from laboratory experiments. The visits of marked individuals were registered, and the amounts consumed were estimated in the video evaluation. Location preference was determined by offering identical food in two neighbouring bait stations. Social interaction was evaluated using the video recordings. The bait stations were visited on a daily basis irrespective of the supply. Food selection patterns (and bait acceptance) observed in the two differently structured areas on the farm were different. However, the relative palatability among the four test baits was stable and agreed with the ranking in laboratory experiments. Over the days of the experiment there was no significant difference in bait acceptance. Location preference and social interaction influenced the choice of bait station. The results show that it is possible to predict bait palatability in the laboratory, which is an important prerequisite for good bait uptake. However, the bait acceptance level is ultimately determined by the prevailing living conditions in the respective area. For optimising bait uptake, the structure of the areas on the farm must be considered just as much as findings about location preferences and social interaction.
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References
Barnett SA (1958) Experiments on “neophobia” in wild and laboratory rats. Brit J Psychol 49:195–201
Barnett SA (1970) The feeding in rodents. In: Harris KL (ed) Indian Rodent Symposium. USAID, New Delhi, pp 113–123
Becker K (1978) Rattus norvegicus—Wanderratte. In: Niethammer J, Krapp F (eds) Handbuch der Säugetiere Europas, Bd 1. Nagetiere. Akademische Verlagsgesellschaft, Wiesbaden, pp 401–420
Berdoy M (1994) Making decisions in the wild: constraints, conflicts and communication in foraging rats. In: Galef BG Jr, Valsechhi P (eds) Behavioural aspects of feeding. Ettore Majorana International Life Science Series, vol 12. Harwood Academic, Chur, Switzerland, pp 289–313
Brigham AJ, Sibly RM (1999) A review of the phenomenon of neophobia. In: Cowan DP, Feare CJ (eds) Advances in vertebrate pest management II. Filander-Verlag, Fürth, pp 67–84
Brunton CFA, Macdonald DW, Buckle AP (1993) Behavioural resisistance towards poison baits in brown rats, Rattus norvegicus. Appl Anim Behav Sci 38:159–174
Cowan DP, Bull DS, Inglis IR, Quy RJ, Smith P (1994) Enhancing rodenticide performance by understanding rodent behaviour. Brighton Crop Protection Conference—Pests and diseases, pp 1039–1046
EPPO (1982) Guideline for the biological evaluation of rodenticides. No 1: laboratory tests for the evaluation of the toxicity and acceptability of rodenticides and rodenticide preparations. European and Mediterranean Plant Protection Organization, Paris
Galef BG (1982) Studies in social learning in Norway rats: a brief review. Dev Psychobiol 15:279–295
Galef BG, Clarke MM (1972) Mother’s milk and adult presence: two factors determining initial dietary selection by weanling rats. J Comp Physiol Psychol 78:220–225
Galef BG, Wigmore SW (1983) Transfer of information concerning distant foods: a laboratory investigation of the “information centre” hypothesis. Anim Behav 31:748–758
Gandolfi G, Parisi V (1973) Ethological aspects of predation of rats, Rattus norvegicus (Berkenhout) on bivalves Unio pictorium and Cerastoderma lamarcki. Boll Zool 40:69–74
Inglis IR, Shepherd DS, Smith P, Haynes PJ, Bull DS, Cowan DP, Whitehead D (1996) Foraging behaviour of wild rats (Rattus norvegicus) towards new foods and bait containers. Appl Anim Behav Sci 47:175–190
Krishnakumari MK (1973) Effects of early food experiences on later food preferences in adult rats. Pest Control 41(11):36–43
Lund M (1988) Rodent behaviour in relation to baiting techniques. Bull OEPP/EPPO 18:185–193
Macdonald DW, Mathews F, Berdoy M (1999) The behaviour and ecology of Rattus norvegicus: from opportunism to kamikaze tendencies. In: Singleton GR, Hinds LA, Leirs H, Zhang Z (eds) Ecologically-based rodent management, monograph no. 59. ACIAR, Canberra, pp 49–80
Marsh RE (1988) Bait additives as a means of improving acceptance by rodents. Bull OEPP/EPPO 18:195–202
Palmateer SD (1974) Laboratory testing of albino rats with anticoagulant rodenticides. In: Marsh RW (ed) Proceedings of the sixth vertebrate pest conference, Anaheim, pp 63–72
Pelz H-J (2001) Extensive distribution and high frequency of resistance to anticoagulant rodenticides in rat populations from northwestern Germany. In: Pelz H-J, Cowan DP, Feare CJ (eds) Advances in vertebrate pest management II. Filander-Verlag, Fürth, pp 161–170
Pryiambodo S (2002) Studies on the feeding and neophobic behaviour in norway rats (Rattus norvegicus Berkenhout, 1769) from farms in Germany. PhD Thesis, Georg August University of Goettingen, Goettingen
Pryiambodo S, Pelz H-J (2003) Studies on neophobic behaviour in Norway rats (Rattus norvegicus Berkenhout, 1769) from farms in Germany. In: Singleton GR, Hinds LA, Krebs CJ, Spratt DM (eds) Rats, mice and people: rodent biology and management, monograph no. 96. ACIAR, Canberra, pp 155–159
Quy RJ, Shepherd DS, Inglis IR (1992a) Bait avoidance and effectiveness of anticoagulant rodenticides against warfarin- and difenacoum-resistant populations of Norway rats (Rattus norvegicus). Crop Prot 11:14–20
Quy RJ, Cowan DP, Haynes P, Inglis I, Swinney T (1992b) The influence of stored food on the effectiveness of farm rat control. Brighton Crop Protection Conference—Pests and diseases, pp 291–300
Quy RJ, Cowan DP, Morgan C, Swinney T (1996) Palatability of rodenticide baits in relation to their effectiveness against farm populations of the Norway rat. In: Timm RM, Crabb AC (eds) 17th Vertebrate Pest Conference, University of California, Davis, pp 133–138
Thompson HV (1948) Studies of the behaviour of the common brown rat (Rattus norvegicus, Berkenhout). I. Watching marked rats taking plain and poisoned bait. Bull Anim Behav VI:26–40
Acknowledgements
We thank B., L. and M. Niehoff for allowing us to work freely on their farm, the University of Kiel, Germany, for providing the transponder equipment, and Katrin Somsdorff for her support in statistics.
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Klemann, N., Pelz, HJ. Studies on food selection behaviour of the Norway rat (Rattus norvegicus) on farms. J Pest Sci 78, 45–52 (2005). https://doi.org/10.1007/s10340-004-0066-1
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DOI: https://doi.org/10.1007/s10340-004-0066-1