Microhabitat use and preferences of the endangered **Cottus gobio** in the River Voer, Belgium

Microhabitat use and preferences of juvenile and adult bullhead Cottus gobio, from the River Voer. Flanders, were studied and compared across different seasons. Water depth, water velocity near the substratum, surface water velocity and substratum type used by C. gobio differed between seasons. These differences, however, were not attributable to differences in microhabitat availability. Adults appeared to prefer higher water velocities and coarser substrata than the average ones available in the basin. Although water depth appeared to have little influence on seasonal variation of microhabitat use in adult C. gobio, juveniles preferred deeper water and coarser substrata in winter. whereas in summer they appeared to use shallower water. There was a difference in microhabitat use between juvenile and adult bullhead only in summer.

[1]  M. Eens,et al.  The presence of artificial stones predicts the occurrence of the European bullhead (Cottus gobio) in a regulated lowland river in Flanders (Belgium) , 2002 .

[2]  Sovan Lek,et al.  Modelling roach (Rutilus rutilus) microhabitat using linear and nonlinear techniques , 2000 .

[3]  N. Lamouroux,et al.  Fish habitat preferences in large streams of southern France , 1999 .

[4]  E. Gray,et al.  Comparative microhabitat use of ecologically similar benthic fishes , 1999 .

[5]  Grayston,et al.  Habitat use by the fish assemblages of two chalk streams , 1997, Journal of fish biology.

[6]  A. Huusko,et al.  Seasonal changes in habitat use and preference by juvenile brown trout, Salmo trutta, in a northern boreal river , 1997 .

[7]  Paul W. Webb,et al.  Station-holding by the mottled sculpin, Cottus bairdi (Teleostei: Cottidae), and other fishes , 1996 .

[8]  J. M. Elliott,et al.  The critical thermal limits for the bullhead, Cottus gobio, from three populations in north‐west England , 1995 .

[9]  A. Bisazza,et al.  The cost of parental care and egg cannibalism in the river bullhead, Cottus gobio L. (Pisces, Cottidae) , 1993, Behavioral Ecology and Sociobiology.

[10]  Jennifer L. Hill,et al.  An Energetic Model of Microhabitat Use for Rainbow Trout and Rosyside Dace , 1993 .

[11]  J. L. West,et al.  Microhabitat Selection by Brook and Rainbow Trout in a Southern Appalachian Stream , 1992 .

[12]  G. Grossman,et al.  The relationship between water velocity, energetic costs, and microhabitat use in four North American stream fishes , 1992, Hydrobiologia.

[13]  G. Copp,et al.  An empirical model for predicting microhabitat of 0+ juvenile fishes in a lowland river catchment , 1992, Oecologia.

[14]  F. Rahel,et al.  Generality of Microhabitat Suitability Models for Young Colorado River Cutthroat Trout (Oncorhynchus clarki pleuriticus) across Sites and among Years in Wyoming Streams , 1992 .

[15]  L. Brown.  Differences in habitat choice and behavior among three species of sculpin (Cottus) in artificial stream channels , 1991 .

[16]  J. Heggenes,et al.  Habitat utilization and preferences in juvenile atlantic salmon (salmo salar) in streams , 1990 .

[17]  R. Mann.  Fish population dynamics in the River Frome, Dorset , 1989 .

[18]  E. Hyslop.  The feeding habits of 0+ stone loach, Noemacheilus bavbatulus (L.), and bullhead, Cottus gobio L. , 1982 .

[19]  Jean C. McCormack,et al.  The Populations of Fish at Cow Green, Upper Teesdale, Before Impoundment , 1974 .

[20]  S. Warrington,et al.  Comparison of diet in bullhead, Cottus gobio and stone loach, Barbatula barbatula in a small english lowland river , 1994 .

[21]  G. Copp.  Microhabitat use of fish larvae and 0+ juveniles in a small abandoned channel of the upper River Rhône, France , 1993 .

[22]  D. Pavlov,et al.  Reproduction and development of the "Frolikh charr', Salvelinus alpinus erythrinus, and the problem of the diversified reproductive characteristics of Arctic charrs , 1991 .

[23]  A. Belaud,et al.  Probability-of-use curves applied to brown trout (Salmo trutta fario L.) in rivers of southern France , 1989 .

[24]  T. Lambert,et al.  Development of habitat suitability criteria for trout in small streams , 1989 .

[25]  D. Morris.  The Reproductive Behaviour of the River Bullhead (Cottus Gobio L.), With Special Reference To the Fanning Activity , 1955 .