Genetic variability of the threatened crayfish Austropotamobius italicus in Tuscany (Italy): implications for its management

Abstract

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A review of the ever increasing threat to European crayfish from non-indigenous crayfish species

“…In addition to those mentioned above there have been many surveys of the distribution, or population biology and/or impact of the Italian ICS A. pallipes/italicus and NICS, O. limosus and P. clarkii, particularly in central, north-east and north-west provinces, e.g. by Nardi et al (2005), Chiesa et al (2006), Fea et al (2006), Ferri et al (2006), Gherardi (2006), Gherardi and Lazzara (2006), Gherardi and Acquistapace (2007), Scalici and Gherardi (2007), Ligas (2008), Bertocchi et al (2008b), Polloni and Ghezzi (2008) and Scalici et al (2008). Figure 16a shows that except in the south A. pallipes/italicus occurs in most Italian provinces.…”

The first large-scale genetic analysis of the vulnerable noble crayfishAstacus astacusreveals low haplotype diversity in central European populations

“…Over the last decades, the number of stocking events that disregard the genetic structure within and between populations (Souty-Grosset and Reynolds, 2009) and cross-basin translocations in response to rapidly 35p2 declining stocks have led to a contamination of local stocks (Largiadèr et al, 2000). This has led to repeated calls for modern conservation programs that consider the genetic origin of the stocking material (e.g., Schulz et al, 2004;Bertocchi et al, 2008;Souty-Grosset and Reynolds, 2009;Strayer and Dudgeon, 2010). Previous studies on noble crayfish taxonomy and biogeography are based solely on morphological characteristics (Bott, 1950(Bott, , 1972Karaman, 1962Karaman, , 1963Albrecht, 1983), while molecular studies have only focused on restricted geographical areas (Agerberg, 1990;Fevolden et al, 1994;Schulz, 2000;Edsman et al, 2002;Schulz et al, 2004;Alaranta et al, 2006).…”

First record of an introduced population of the southern lineage of white-clawed crayfish (Austropotamobius ‘italicus’) north of the Alps

“…The 16S fragment completely matched the reference A. 'italicus' sequences from the Po basin in northern Italy (AJ242705-7, AY521289, AY611183-5), the Magra river in northern Italy (AY611185, EU308125), the Rhine basin in southeastern Switzerland (AJ242705), and Lake Plansee in Austria (AJ242706) (Largiadèr et al, 2000;Zaccara et al, 2004;Fratini et al, 2005;Bertocchi et al, 2008b). Furthermore, several additional A.…”