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Providing evidence to improve practice

Action: Procambarus crayfish control: Trapping and removal Control of Freshwater Invasive Species

Key messages

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  • One controlled, replicated study in Italy found that baiting traps with food (tinned meat) trapped the most red swamp crayfish compared to the use of male and female pheromones or the control (no bait). Over half of all crayfish caught were found in traps baited with food.


Supporting evidence from individual studies


A controlled, replicated study conducted in 2006 in canals in Italy (Aquiloni & Gherardi 2010) found that food-baited traps were successful in capturing red swamp crayfish Procambarus clarkii. Of 282 crayfish caught using different bait types, over half were captured in food-baited traps compared with traps containing male or female crayfish and a control treatment (no bait). A total of 72 traps were set three metres apart and randomly assigned one of four bait treatments: no bait, tinned meat (food), male crayfish, or female crayfish. Bait crayfish were kept inside a wire netting box inside the traps to prevent them from mating with trapped individuals. The traps were checked after two days. The sex of each trapped crayfish was determined.


Referenced papers

Please cite as:

Aldridge, D., Ockendon, N., Rocha, R., Smith, R.K. & Sutherland, W.J. (2019) Some aspects of control of freshwater invasive species. Pages 569-602 in: W.J. Sutherland, L.V. Dicks, N. Ockendon, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2019. Open Book Publishers, Cambridge, UK.