Habitat De La Truite Commune (Salmo Trutta L.) Pendant La Période Juvénile en Ruisseau : Préférences, Mouvements, Variations Journalières Et Saisonnières.

Roussel, Jean-Marc; Bardonnet, Agnès

doi:10.1051/kmae:2002044

Cited by 19 publications

(5 citation statements)

References 77 publications

(69 reference statements)

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“…Low focal (snout) velocity preference (< 0.10 m. s -1 ) has also been reported by HEGGENES (1996). However, a wide range of values for each microhabitat variable was found in the literature (BOVEE, 1978;BELAUD et al, 1989;ROUSSEL et al, 1999;ROUSSEL and BARDONNET, 2002). Several studies considering two life-stages (adult and juvenile brown trout) were compared (VISMARA et al, 2001) for experimental univariate Habitat Suitability Curves (HSC) and the differences obtained were explained essentially by the characteristics (e.g.…”

Section: Discussionmentioning

confidence: 93%

Habitat Use by Native and Stocked Trout (Salmo Trutta L.) in Two Northeast Streams, Portugal

Teixeira¹,

Cortes²,

Oliveira³

2006

Bull. Fr. Pêche Piscic.

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Habitat use by stocked and native brown trout (Salmo trutta L.) was assessed in two headwater streams of North-eastern Portugal. Underwater observations were made during the summer season in three successive years to evaluate the effect of supplemental trout stocking. Multivariate analysis techniques applied to data sets on microhabitat use were exploited to identify the focal elevation (distance of fish from the bottom), total depth and cover as the variables that contribute most to the discrimination between stocked and native trout. Preference curves computed for native and stocked trout of the same age (1 + ), showed a distinct pattern in their ability to explore the available microhabitat resources. Stocked trout tended to occupy deeper pools (total depth > 100 cm vs. 60-100 cm for native trout), holding higher focal elevations (140-160 cm vs. < 20 cm for native) with lower water column velocities (< 10 cm.s -1 vs. 10-20 cm.s -1 for native) and no specific preference for cover. In contrast, native trout displayed a clear preference for microhabitats with coarse substrate (particle size > 22.5 cm) and cover (combination of boulders and overhanging vegetation or undercut banks). Furthermore, a high poststocking movement of 80% hatchery-reared fish was verified just one month after their release, suggesting that stocking did not contribute to the sustainable populations in either stream, and is far from being an adequate management technique. Key-words:Salmo trutta, snorkelling, restocking, microhabitat, preference curves. UTILISATION DE L'HABITAT PAR LA TRUITE COMMUNE (SALMO TRUTTA L.) SAUVAGE ET CELLE D'ÉLEVAGE, DANS DEUX RIVIÈRES DU NORD-EST DU PORTUGAL RÉSUMÉL'utilisation de l'habitat par la truite de repeuplement et par la truite commune (Salmo trutta) a été évaluée dans deux rivières du Nord-Est du Portugal. Des observations en plongée ont été faites en période estivale pendant trois années successives pour évaluer l'efficacité des repeuplements. Des techniques d'analyses multivariées appliquées à l'ensemble des données du microhabitat ont permis d'identifier la position Article available at

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Section: Discussionmentioning

confidence: 93%

Habitat Use by Native and Stocked Trout (Salmo Trutta L.) in Two Northeast Streams, Portugal

Teixeira¹,

Cortes²,

Oliveira³

2006

Bull. Fr. Pêche Piscic.

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“…The water depth was around 15 cm, and water velocity was maintained throughout the entire experiment at 12.4 cm/s ( SD = 3.9) at 50% of the water depth. Substratum and water quality in the channel were close to optimal environment for young trout (Heggenes, Baglinière, & Cunjak, 1999; Roussel & Bardonnet, 1997, 2002). Invertebrates within the enclosures were from the water diverted from the Lapitxuri brook as well as from the channel itself.…”

Section: Methodsmentioning

confidence: 91%

Comparison of food availability and performances of first‐feeding alevins through spring with the occurrence of a flood

Arevalo

Larrañaga²,

Bardonnet

2020

Ecology of Freshwater Fish

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Climate change will increase the temperature of rivers and will lead to more extreme events, such as floods. Temperature increases and floods will likely alter the phenology of freshwater species differently and have the potential to significantly disturb prey–predator interactions. In spring, an increase in temperature triggers an increase in primary production and controls the timing of the emergence in brown trout (Salmo trutta L.). Hydrology regulates the abundance of invertebrates, which are the main food source for newborn alevins. As such, climate change may desynchronise the relationship between fish emergence and invertebrate production, resulting in a negative impact on the performance of newly emerged alevins. In the present study, we quantified the abundance of invertebrates and the performance (survival and growth) of newborn alevins in early spring (March) compared to late spring (April/May) in 8 enclosures in a semi‐natural channel. In addition, we simulated a flood in 4 enclosures in late spring. Our results revealed that survival and growth of alevins in early spring were limited due to low invertebrate abundance. In late spring, there was a decrease in the survival of alevins placed in the flooded enclosures, likely due to the reduction of food availability. However, the growth of survivors increased, probably because of the increase in the abundance of Chironomidae after the flood and a reduced competition between congeners. Our results demonstrate that when emergence and flooding happen simultaneously, they can limit resources which will impact the survival and growth of young salmonids in running waters.

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“…La qualité et la quantité des apports d'eau peuvent être également très variables le long du parcours des différents cours d'eau et ne pas convenir à certaines espèces de poissons. Un poisson peut aussi se déplacer d'un habitat à l'autre au cours d'une même année, selon ses besoins vitaux pour trouver des sites d'alimentation, de reproduction ou même des refuges thermiques dont les caractéristiques ne sont pas nécessairement les mêmes pour chacune des espèces (Roussel et Bardonnet, 2002).…”

Section: Origine Et Mandat Des Organismes De Bassins Versantsunclassified

Inventaire ichtyologique du bassin versant de la zone du Chêne et de la forêt de la Seigneurie de Lotbinière au moyen de l’ADN environnemental

Caron¹,

Laporte²,

Bernatchez³

2022

Le Naturaliste canadien

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L’inventaire ichtyologique sur le territoire de l’Organisme de bassins versants (OBV) de la zone du Chêne et de la forêt de la Seigneurie de Lotbinière (FSL) a été réalisé par l’analyse de l’ADN environnemental (ADNe). Le but principal consiste à documenter la diversité et l’abondance relative des poissons dans plusieurs sites de la FSL ainsi qu’en territoire agroforestier, et de comparer la richesse spécifique détectée par l’ADNe à celle obtenue lors d’inventaires antérieurs. Quarante et une espèces de poissons sont présentes sur le territoire, dont l’omble de fontaine (Salvelinus fontinalis) et l’achigan à petite bouche (Micropterus dolomieu) recherchés par les pêcheurs, ainsi que deux espèces d’un intérêt particulier pour la conservation, le fouille-roche gris (Percina copelandi) et le méné bec-de-lièvre (Exoglossum maxillingua). Quatre espèces y sont répertoriées pour la première fois. Lorsque la capture de poissons n’est pas nécessaire, l’ADNe est une technique très efficace qui permet de brosser un portrait plus complet des espèces en présence avec un effort d’échantillonnage moindre que les techniques d’inventaires traditionnels, et ce, de manière beaucoup moins invasive.

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Habitat De La Truite Commune (Salmo Trutta L.) Pendant La Période Juvénile en Ruisseau : Préférences, Mouvements, Variations Journalières Et Saisonnières.

Cited by 19 publications

References 77 publications

Habitat Use by Native and Stocked Trout (Salmo Trutta L.) in Two Northeast Streams, Portugal

Habitat Use by Native and Stocked Trout (Salmo Trutta L.) in Two Northeast Streams, Portugal

Comparison of food availability and performances of first‐feeding alevins through spring with the occurrence of a flood

Inventaire ichtyologique du bassin versant de la zone du Chêne et de la forêt de la Seigneurie de Lotbinière au moyen de l’ADN environnemental

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