References of "Philippart, Jean-Claude"
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See detailA preliminary telemetry investigation on the obstacles to anadromous Salmonids migration in spawning streams of the Belgian Ardennes (river Meuse bassin)
Ovidio, Michaël ULg; Birtles, Cymon; Baras, Etienne et al

in Leclerc, Michel (Ed.) Proceedings of the Second IAHR Symposium on Habitat Hydraulics, Ecohydraulique 2000 (1996)

In the course of the 'Meuse Salmon 2000' programme aiming at the restoration of the Atlantic salmon Salmo salar and sea trout Salmo trutta in the River Meuse Basin, most large dams are progressively ... [more ▼]

In the course of the 'Meuse Salmon 2000' programme aiming at the restoration of the Atlantic salmon Salmo salar and sea trout Salmo trutta in the River Meuse Basin, most large dams are progressively equipped with fishways to restore the free circulation of spawners between the North Sea and the first major spawning streams, the River Ourthe and its tributaries. Spawners entering the River Ourthe would still be confronted to so-called minor obstacles, aiming at water regulation for tourism purposes but of which the actual impact on fish migration has never been investigated. In order to test for the actual free-circulation of salmonid spawners in the upper River Ourthe and to locate potential spawning grounds, a probe fish (489 mm FL male sea trout) was tagged with an intraperitoneally implanted radio-transmitter. From the 18th of ovember 1995 onwards, the trout was tracked in a part of the river (44 km upstream of the confluence) which was thought to be devoid of any major obstacle to fish migration. Three days after its release, the trout had migrated over 6 km up to a small weir (1.8 m high). During four consecutive days, the trout was consistently located downstream of the weir but no successful climbing was observed, reflecting the poor efficiency of the central fishpass under dry weather conditions during summer and autumn. The trout then settled in a deep run habitat, 150 m downstream of the weir and no upstream excursion was recorded until the first major rise of water level, four weeks later, even when the weir was opened for water regulation purposes. When the water level was maximum (24th of December), the trout moved upstream of the weir and migrated over 28 km during the next 72 hours up to a spot identified as a potential spawning redd from habitat features, and where it was consistently located till the 31st of December. These results, though most preliminary, clearly indicate that even minor obstacles may cause a substantial lag in trout migration of which the impact on spawning success remains to be determined. Since similar minor man-made obstacles are most frequent in the salmonid spawning streams of the Belgian Ardennes, it is thus uncertain that migratory trout having successfully climbed the major obstacles since the North Sea would find their way to the spawning redds. As a corollary, it is suggested that more detailed case studies should be undertaken, ideally via the use of telemetered probe-fish, in order to provide management policies that would represent a suitable compromise between users of water resources with apparently conflicting interests (water regulation, tourism, nature conservancy). [less ▲]

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See detailHistological and biometrical study of intraovarian oocytes in barbel (Barbus barbus) reared in captivity
Poncin, Pascal ULg; Thiry, Marc ULg; Lepoint, A. et al

in Folia Zoologica (1996), 45(Suppl. 1), 117-

In the present study, we investigated the histology and oocyte size variations in ovaries from barbel reared in captivity. We demonstrated that the size distribution of intraovarian oocytes is quadrimodal ... [more ▼]

In the present study, we investigated the histology and oocyte size variations in ovaries from barbel reared in captivity. We demonstrated that the size distribution of intraovarian oocytes is quadrimodal (including primary oocytes, oocytes with vacuoles, vitellogenetic oocytes and ova), Indicating that oocyte development can be found in the ovaries (some oocytes are in late vitellogenesis). The ovarian structure is discussed in realation to the repeated spawnings observed in captivity. [less ▲]

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See detailOccurrence and impact of Heteropolaria (Protozoa: Ciliophora), on intensively cultured perch Perca fluviatilis
Grignard, J. C.; Mélard, Charles ULg; Baras, E. et al

in Annales Zoologici Fennici (1996), 33

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See detailBiologie de la reproduction de deux espèces de Chrysichthys (Siliuriforme, Bagridae) du Lac Nokoué et de la lagune de Porto-Novo au Bénin.
Laleye, P.; Philippart, Jean-Claude ULg; Poncin, Pascal ULg

in Journal of African Zoology = Revue de Zoologie Africaine (1995), 109(3), 213-224

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See detailBiologie des Barbus européens, africains et asiatiques.
Poncin, Pascal ULg; Berrebi, P.; Philippart, Jean-Claude ULg et al

Book published by J.C. Ruwet - Les Cahiers d'Ethologie appliquée (1993)

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See detailPour que revienne le saumon en Meuse
Poncin, Pascal ULg; Philippart, Jean-Claude ULg

Article for general public (1992)

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See detailPour que revienne le saumon en Meuse (commentaire de films)
Poncin, Pascal ULg; Philippart, Jean-Claude ULg

Article for general public (1992)

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See detailManipulations chromosomiques. Amélioration génétique et contrôle du sexe chez les poissons.
Castelli M.; Mélard, Charles ULg; Poncin, Pascal ULg et al

in Nouvelles de la Science et des Technologies (1990), 8(2), 61-71

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