Structure et fonctionnement des ecosystemes du haut-rhone francais. 14-etude des preferences alimentaires de la loche franche (noemacheilus barbatulus L.) par une methode des points modifiee

Perrin, J. F.

doi:10.1007/bf00686128

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…When small-scale gradients in oxygen or temperature exist, these factors may also affect microhabitat choice (Zalewski et al, 1990) . Both species feed predominantly on benthic invertebrates -preferably midge larvae - (Bernet, 1960;Sauvonsaari, 1971 ;Perrin, 1980 ;Burdeyron & Buisson, 1982b ;Welton et al, 1983), to which the stone loach is directed by chemical stimuli (Smyly, 1955 ;Filek-Wittinghausen, 1960), the gudgeon by visual stimuli . The variables mentioned are more or less tightly controlled by the hydrological regime, which is rather variable in low-order steams .…”

Section: Introductionmentioning

confidence: 99%

Microhabitat use by two small benthic stream fish in a 2nd order stream

Zweimüller¹

1995

Hydrobiologia

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Direct observation of two benthic fish species -the stone loach (Barbatula barbatula) and the gudgeon (Gobio gobio) -in the field revealed a spatial segregation between the species in a study area with shallow riffle and moderately deeper pool sections . Stone loach generally inhabited shallow, more current-exposed locations and gudgeon preferred deeper, mostly sandy areas . The small individuals of both species were confined to shallow muddy locations and the larger individuals were found in deeper and more current exposed areas .The main factor affecting microhabitat choice was the flow regime : -it was a limiting factor for the stone loach, where the discharge rates controlled the presence of fish in the study area .-distribution patterns of both species were influenced by discharge and by fluctuations in discharge .The following mechanisms regulating the distribution of stone loach and gudgeon are hypothesized : (A) Gudgeon : They prefer high water depth, low current velocities and sandy substrate, which strongly limits their spatial niche . Mainly relatively small individuals (size class 2 ; 6-9 cm) changed microhabitat in relation to environmental parameters . Size class 3 (approx . 9-12 cm) may be interpreted as a rather unpredictable transitory period between juvenile and adult stage . Large gudgeon entered the observation area mainly when discharge rates were high and variable . Increasing discharge rates increased the spatial niche of the large gudgeon .(B) Stone loach : At low flow rates, the observation area seemed to be an optimal place for the stone loach . Changes in environmental conditions are reflected in the distribution patterns . The transition between juvenile and adult microhabitat use takes place in size class 2 . Under high and/or variable flow regime the species was not found in the observation area .

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Section: Introductionmentioning

confidence: 99%

Microhabitat use by two small benthic stream fish in a 2nd order stream

Zweimüller¹

1995

Hydrobiologia

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“…They are found in a range of environmental conditions (Maitland, 1972 ;Wheeler, 1978) and both occupy the benthic habitat. Feeding studies on the stone loach have been undertaken by Smyly (1955), Sauvonsaari (1971), Mester (1974) and Perrin (1980) . A greater number of investigations have dealt with the food preferences of bullhead (Smyly, 1957 ;Andreasson, 1971 ;Crisp & Mann, 1978 ;Adamicka, 1979) .…”

Section: Introductionmentioning

confidence: 99%

The effect of interaction between the stone loach Noemacheilus barbatulus (L.) and the bullhead Cottus gobio (L.) on prey and habitat selection

1991

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Stone loach and bullhead were given a choice of Chironomus and Asellus prey in experiments using solitary fish and fish in company . Solitary fish ate more than fish in company . The effect of light and substratum type on feeding was investigated . Both species ate more prey items on gravel than silt when a significant difference was observed . Bullhead ate more than loach in the light on both substrata. The only experiment in which loach ate more than bullhead was on a silt substratum in the dark . It is concluded that these two species utilise different components of the available food resources in chalk streams by adopting different habitats.

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“…Les analyses volumétriques fournissent des résultats plus fidèles du spectre alimentaire que les analyses numériques (PERRIN, 1980). Chez L. callensis (Tableau 3), les chironomes représentent la plus grande fraction du spectre alimentaire avec 51,0 % en automne et 10,1 % en hiver suivi par la vase (substrat meuble) avec 44,0 % en hiver et 7,7 % en été.…”

Section: Coefficient Volumétriqueunclassified

Étude saisonnière du régime alimentaire du barbeau Luciobarbus callensis (Valencienne 1842) dans le réservoir de K'sob (M'Sila, Algérie)

Mimeche

Zedam

Chafaa

et al. 2018

rseau

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La composition du régime alimentaire du barbeau (Luciobarbus callensis) a été étudiée dans le réservoir du barrage de K'sob, situé en amont de la ville de M'Sila (Algérie). La capture des barbeaux a été effectuée entre septembre 2010 et août 2011. Le régime alimentaire a été étudié à partir de 379 spécimens récoltés par filet trémaillé. Au cours de la période d'étude, on a noté que le spectre alimentaire était constitué essentiellement de Chironomidae, de copépodes et de Simulidae qui sont abondants dans le milieu. Le barbeau du réservoir de K'sob présente un rythme alimentaire saisonnier influencé d’une part par les conditions climatiques et écologiques du milieu, et d’autre part, par son cycle reproductif. Dans la zone d’étude du réservoir de K'sob, L. callensis possède un régime alimentaire omnivore à tendance zoobenthophage.

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Structure et fonctionnement des ecosystemes du haut-rhone francais. 14-etude des preferences alimentaires de la loche franche (noemacheilus barbatulus L.) par une methode des points modifiee

Cited by 7 publications

References 9 publications

Microhabitat use by two small benthic stream fish in a 2nd order stream

Microhabitat use by two small benthic stream fish in a 2nd order stream

The effect of interaction between the stone loach Noemacheilus barbatulus (L.) and the bullhead Cottus gobio (L.) on prey and habitat selection

Étude saisonnière du régime alimentaire du barbeau Luciobarbus callensis (Valencienne 1842) dans le réservoir de K'sob (M'Sila, Algérie)

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