Seasonal changes in habitat use and preference by juvenile brown trout &lt;I&gt;Salmo&lt;/I&gt; &lt;I&gt;trutta&lt;/I&gt; in a northern boreal river

Mäki‐Petäys, Aki; Muotka, Timo; Huusko, Ari; Tikkanen, Pertti; Kreivi, Petri

doi:10.1139/cjfas-54-3-520

Cited by 75 publications

(5 citation statements)

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“…This pattern matches with observations from other southern brown trout populations (Vismara et al, 2001;Teixeira et al, 2006), although not with northern populations where adult trout select pool habitats but avoid river margins, and younger individuals prefer instream vegetation at river margins over boulder sheltered positions (e.g. Greenberg et al, 1996;Mäki-Petäys et al, 1997;Heggenes, 2002).…”

Section: Discussionsupporting

confidence: 85%

“…Greenberg et al, 1996;Mäki-Petäys et al, 1997;Roussel and Bardonnet, 1997;Teixeira et al, 2006). Despite physical habitat is the major determinant of spatial variations in the abundance and distribution of most salmonid populations , the distribution of younger individuals at a reach scale is affected by older fish through intercohort competition or predation (Bult et al, 1999;Vehanen et al, 1999;Nordwall et al, 2001;Vik et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Salmonids are quite plastic in their habitat use so that generalizations of HSC can be spread at most at a regional spatial scale (Mäki-Petäys et al, 1997). This has resulted in quite different HSC developed for brown trout in diverse locations (see Vismara et al, 2001, and HSC reviewed therein).…”

Section: Discussionmentioning

confidence: 99%

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Interactive effects of cover and hydraulics on brown trout habitat selection patterns

Ayllón

Almodóvar

Nicola

et al. 2008

River Research & Apps

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Habitat modelling results are extremely sensitive to the habitat suitability criteria (HSC) used in the simulations. HSCs are usually expressed as univariate habitat suitability curves, although such univariate approach has been long questioned, since overlooking interactions between hydraulic variables may misrepresent the complexity of fish behaviour in habitat selection. It could lead to adopt erroneous flow management decisions based on misleading results. Furthermore, the interactive effects of hydraulic variables on habitat selection may be driven by the structural features of the channel, which determine cover availability. Therefore, we compared brown trout habitat selection patterns through multivariate resource selection functions (RSFs) in structurally contrasting rivers to unveil the interactive effects of hydraulics and cover elements and their consequences in univariate HSC results. Microhabitat preferences of young-of-the-year (0þ) trout were similar across fast and slow waters, meanwhile juvenile (1þ) and adult (>1þ) preferences significantly changed. RSFs for young-of-the-year trout were consistent with univariate results and did not differ among water types. However, RSFs for older trout varied among water types and revealed complex interactions among hydraulic variables and between hydraulics and structural elements, which were not described accurately by univariate curves. Therefore, results suggest that interactions between water depth and current velocity have a significant effect on habitat selection patterns in juvenile and adult brown trout, this effect being controlled by cover availability.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

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Interactive effects of cover and hydraulics on brown trout habitat selection patterns

Ayllón

Almodóvar

Nicola

et al. 2008

River Research & Apps

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“…Mäki-Petäys et al 1997;Heggenes et al 1999), and in relation to prey availability (Bridcut and Giller 1995). To this end, it is interesting to note that riffles in our artificial streams were far more productive than pools, and this may indeed be a partial explanation to brown trout's preference for this habitat type.…”

Section: Discussionmentioning

confidence: 82%

Invasion of north European streams by brook trout: hostile takeover or pre-adapted habitat niche segregation?

Korsu

Huusko²,

Muotka

2009

Biol Invasions

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We combine evidence from small-scale experiments with a large-scale field survey to clarify the roles of biotic resistance and pre-adapted habitat niche segregation to the invasion success of the North American brook trout (Salvelinus fontinalis) in North European streams previously dominated by brown trout (Salmo trutta). Interspecific aggressions among the two species were negligible, yet there was distinct habitat niche segregation between them: brook trout occupied mainly pool habitats while brown trout tended to reside in fast-flowing riffles. Habitat niche segregation among brook trout and brown trout prevailed across a wide array of scales from experimental flumes to entire drainage systems, although the segregation pattern was weaker in the field. Habitat differentiation among the two species reflected their differential habitat requirements, suggesting that a match between a species' niche requirements in its native range and habitat availability in the new environment is a prerequisite for understanding invasion success.

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“…This indicates that there is little need for the fish to move long distances to find a new territory as they grow larger. Researchers have suggested that habitat preference changes with ontogeny and larger fish prefer deeper and slower flowing water (Mäki-Petäys et al 1997;Heggenes 2002;Ayllón et al 2010). The stream studied here is small but exhibits large within-station variability in habitat types and structural heterogeneity.…”

Section: Discussionmentioning

confidence: 87%

Small-scale dispersal and population structure in stream-living brown trout (Salmo trutta) inferred by mark–recapture, pedigree reconstruction, and population genetics

Vøllestad

Serbezov

Bass

et al. 2012

Can. J. Fish. Aquat. Sci.

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Many animals move among habitats, and even small-scale dispersal of individuals between habitat patches may have strong implications for population dynamics and structure. Here, we use long-term mark–recapture data combined with extensive genotyping and parentage assignment to investigate the importance of small-scale location change of resident brown trout ( Salmo trutta ) in a small stream (1500 m). During the first summer, juvenile fish dispersed downstream (mean displacement 200 m), with smaller juveniles dispersing longer distances. Downstream movement was also predominant during the first winter, but older fish moved little. This limited dispersal resulted in a significant isolation-by-distance structure for ages 1 and 2, but not for older age groups or for the mature fish. Individual pairwise relatedness coefficients decreased with waterway distance for mature fish during the 2002 and 2003 spawning seasons, but only weakly. Overall, between-site genetic differentiation was stronger for the younger age classes, and the signal decayed with age, indicating that the genetic structure observed in the stream is mainly driven by spatial aggregation of close relatives.

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Seasonal changes in habitat use and preference by juvenile brown trout <I>Salmo</I> <I>trutta</I> in a northern boreal river

Cited by 75 publications

References 0 publications

Interactive effects of cover and hydraulics on brown trout habitat selection patterns

Interactive effects of cover and hydraulics on brown trout habitat selection patterns

Invasion of north European streams by brook trout: hostile takeover or pre-adapted habitat niche segregation?

Small-scale dispersal and population structure in stream-living brown trout (Salmo trutta) inferred by mark–recapture, pedigree reconstruction, and population genetics

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