RT info:eu-repo/semantics/article
T1 Upstream movement capacity of invasive signal crayfish (Pacifastacus leniusculus) under different environmental and biometric factors
A1 Bravo Córdoba, Francisco Javier
A1 Fuentes Pérez, Juan Francisco
A1 Escudero Ortega, Carlos
A1 García Vega, Ana
A1 Sanz Ronda, Francisco Javier
K1 Introduced organisms
K1 Exotic animals
K1 Especies exóticas invasoras
K1 Especies exóticas invasoras - Control - España
K1 Crayfish
K1 Cangrejos de río
K1 Freshwater biodiversity conservation
K1 Diversidad de las especies
K1 Fauna - Protección
K1 Survival analysis (Biometry)
K1 Análisis de supervivencia (Biometría)
K1 Aquatic ecology
K1 Ecología del agua dulce
K1 Marine & Freshwater Sciences
K1 3105 Peces y Fauna Silvestre
K1 5102.08 Pesca
K1 5902.08 Política del Medio Ambiente
AB The spread of invasive crayfish species is a major threat to endemic species worldwide. This threat affects native crayfish as well as flora and fauna species in general. In order to limit their dispersal, different methods have been used, the most promising of which are those related to physical barriers. For their design, it is essential to know the limits in the capacity of crayfish to move under different hydraulic scenarios, although to date, there are few studies on this topic. The present work analyzes the volitional upstream movement capacity of the signal crayfish (Pacifastacus leniusculus) in a laboratory open flume, with different configurations of environmental and hydraulic variables (bed roughness, flow velocity, water temperature, times of day) and accounting for the possible effect of biometric factors (carapace length, sex). Twenty-four different trials with five individuals per trial were carried out, tracking all crayfish movements individually by visual tags and with a video monitoring system. Data were analyzed using survival analysis techniques and parametric models were developed, considering as response variables the maximum distance traveled and the movement speed. The results showed that the combination of bed roughness and flow velocity were the best predictors to explain crayfish movement performance, with a flow velocity greater than 0.8 m/s together on a non-rough bed being the limiting factor; the water temperature and the sex also have a significant effect. This information can serve as a basis for the design of future barriers to the dispersal of invasive crayfish species in the Iberian Peninsula.
PB MDPI
SN 2673-9976
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/61818
UL https://uvadoc.uva.es/handle/10324/61818
LA eng
NO Biology and Life Sciences Forum, 2022, Vol. 13, Nº. 1, 36
NO Producción Científica
DS UVaDOC
RD 07-ago-2024