Naslov
Potential for control of the invasive signal crayfish (Pacifastacus leniusculus) in a recently invaded region in Croatia

Autori
Hudina, Sandra ; Galić, Nika ; Kutleša, Petra ; Desnica, Sonja

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
2nd Croatian symposium on invasive species With international participation / Jelaska, Sven - Zagreb : Hrvatsko ekološko društvo, 2016, 35-35

Skup
2nd Croatian symposium on invasive species With international participation

Mjesto i datum
Zagreb, Hrvatska, 21.11.2016. - 22.11.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
signal crayfish, individual-based model, optimal management scenario, manual removal

Sažetak
Signal crayfish is one of the 37 species on the List of invasive alien species of Union concern according to EU Regulation 1143/2014 on invasive species. The regulation calls for efficient and cost-effective management of listed species. The aim of this study was to explore the effectiveness of different options for management of the signal crayfish population in a recently invaded region in Croatia. We developed an individual-based model (IBM) to represent signal crayfish population and tested 13 different scenarios, entirely based on manual removal by crayfish traps. Tested scenarios were all based on a fixed number of traps (200), and fixed trapping period (7 trapping days, once a month). Simulations were run for 8 years of management. Scenarios differed in the trapping frequency (every vs. every second year), spatial extent (trapping targeted at invasion core, front or combination of both) and the start of management actions (4 or 6 years since invasion). The most effective scenario, which resulted in 65-74% reduction from the baseline of population abundance and colonisation distance, was the one performed over the largest spatial extent. Scenarios targeting invasion fronts were also among the most effective. The model demonstrated striking differences in the effectiveness of the same scenario, depending on the start of the management actions. The delay of only 2 years in the start of management leads to 2-3.5 times decrease in efficiency of the most effective scenario. The results are discussed in the context of the EU regulation requirements.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA