Familiarity, prior residency, resource availability and body mass as predictors of the movement activity of the European catfish

Individual movements, home ranges and habitat use by native rheophilic cyprinids and non‐native catfish in a large regulated river

“…Barbel, chub and catfish demonstrated high interseason fidelity to certain preferred habitats within the study area, even after long Dn (Figure 3). Site fidelity was also observed for barbel (Britton & Pegg, 2011;De Vocht & Baras, 2005;Ovidio et al, 2007), chub (Allouche et al, 1999), dace (Leuciscus leuciscus (L.); Clough & Ladle, 1997), ide (Leuciscus idus (L.); Kulíšková, Horký, Slavík & Jones, 2009;Winter & Fredrich, 2003) and catfish (Brevé et al, 2014;Carol, Zamora & García-Berthou, 2007), and may be regarded as a valuable behavioural strategy that minimises energy expenditure (Hart, 1986), or to defend territories in the case of the catfish (Slavík, Horký, Maciak & Wackermannová, 2016). In the present study (a study reach three times longer than the study reach of Brevé et al, 2014), site fidelity mostly appeared with the catfish, that tended to change location less often than the other species and that had lower interindividual heterogeneity mobility patterns (Figure 3).…”

Diel movement of brown trout,Salmo trutta, is reduced in dense populations with high site fidelity

“…For example, smaller individual zebrafish ( Danio rerio Hamilton, 1822) were more active in areas with a potentially higher predation risk (Polverino, Bierbach, Killen, Uusi‐Heikkilä, & Arlinghaus, ). Similarly, smaller catfish ( S. glanis ) showed more motivation to search for shelter than larger conspecifics (Slavík et al., ). However, the results from the field study presented here tended to show a positive relationship between body size and movement at the subpopulation level.…”

“…For example, newcomer coral fish ( Stegastes diencaeus Jordan and Rutter, 1897) showed higher movement and lower food intake compared with residents, and they experienced more attacks, indicating that relocating to a new territory induces higher energy costs, including those associated with stress, as well as decreased energy intake (McDougall & Kramer, ). Similarly, prior residency reduced the movement of catfish ( Silurus glanis Linnaeus, 1758) during competition for shelter; that is, to acquire available resources, intruders increased their movement more than residents (Slavík, Horký, Maciak, & Wackermannova, ). Specifically, individuals familiar with an area tend to be more successful in designating that area as a territory, so the specific behavior patterns of intruders, for example, increased movement, may be motivated by an effort to obtain more information about the local environment (Bruinzeel & van de Pol, ).…”

Behavioural and fitness effects of translocation to a novel environment: Whole‐lake experiments in two aquatic top predators

“…Previous catfish stocking experiments in Czech reservoirs have shown that catfish respond to conditions surpassing ecological carrying capacity with extended movements, declines in growth and high catchability to angling gear, indicating intensive foraging in their new environment (Vejřík et al, 2017, 2019). Also, in previous work catfish have been found to be stressed by social competition (Carol et al, 2007; Slavík & Horký, 2009; Slavík et al, 2014), and are also challenged by finding shelter among unfamiliar individuals (Slavík, Horký, Maciak, & Wackermannová, 2016). Alternatively, because the translocated catfish were relatively large‐bodied, even the smallest catfish that we stocked unlikely experienced substantial risk of predation.…”