References of "Ovidio, Michaël"
     in
Bookmark and Share    
Peer Reviewed
See detailRehabilitation effort for anadromous salmonids in the river Meuse basin. Achievements and new challenges
Ovidio, Michaël ULiege; Kestemont, Patrick; Dierckx, Arnaud ULiege et al

Conference (2019, May)

Until the end of the 19th century, the Atlantic salmon (Salmo salar) was widespread in the river Meuse basin and salmon fisheries were prosperous in France, Belgium and The Netherlands. The number of ... [more ▼]

Until the end of the 19th century, the Atlantic salmon (Salmo salar) was widespread in the river Meuse basin and salmon fisheries were prosperous in France, Belgium and The Netherlands. The number of salmon and sea trout captures reaches 57000 ind/year in the Dutch Rhine-Meuse delta. Between 1840 and 1950, the building of navigation dams in the river Meuse and its tributaries, as well as the increase of industrial water pollution and the overexploitation of the stock, led to the extinction of all anadromous fish species. In 1983, the capture of a sea trout (Salmo trutta) in the lower Belgian Meuse brought the problem of the migratory of fish to the surface. Based on scientific advices and feasibility studies carried out from 1983 to 1986, the program Salmon Meuse was launch in 1987. It aims at the restoration of the complete life cycle of migratory salmonids in the international River Meuse Basin. Important rehabilitation efforts have been progressively done since the beginning of the project to the present 1) Improvement of the general quality of the water 2) Restocking with strains originating from France, Ireland, Scotland 3) Hydromorphological restoration of gravel bed habitats 4) The construction of modern fishways for upstream migration in the Meuse and tributaries 5) Adoption of measures to facilitate downstream migration at hydroelectric sites 6) Development of a salmon hatchery with facilities to realise artificial reproduction using returning adults 7) The establishment of international collaboration network 8) The election of the best strains based on genetics of returning adults and the process of smoltification finally 9) The opening of the Haringvliet sluices in the Estuary of the Meuse in the Netherland in 2018. In the year 2000, the first adult salmon originating from restocking program was captured in the fishway of Lixhe, and this return of a salmon, more than 50 years of his extinction, was a major ecological event. From 2000 to 2018, the number of returning Atlantic salmon and sea trout progressively increased and reaches n=60 in the best year. This underline partial achievement of the objectives of the project, but the number of returning adult is sill too low to have a natural sustainable population. Supplementary efforts must be undertaken in the future, especially in terms of success of smolts downstream migration and escapement success as well as an optimization of the restocking practices (in terms of quantity and choice of the best development stage). During our talk, we will synthesise the major key-points of this challenging project whose success requires a balance between the development and maintenance of numerous human activities and the associate preservation of the aquatic environment. We will use examples of results originating from recent scientific research. [less ▲]

Detailed reference viewed: 25 (7 ULiège)
See detailThe Meuse salmon project. Achievements and new challenges
Ovidio, Michaël ULiege; Kestemont, Patrick

Conference given outside the academic context (2019)

Detailed reference viewed: 31 (4 ULiège)
Full Text
Peer Reviewed
See detailWhat happens to glass eels after restocking in upland rivers? A long‐term study on their dispersal and behavioural traits
Nzau Matondo, Billy ULiege; Séleck, Emilie; Dierckx, Arnaud ULiege et al

in Aquatic Conservation (2019)

The European eel Anguilla anguilla is a critically endangered fish species as a result of human activities and climate change in river and oceanic ecosystems. Restocking using glass eels in continental ... [more ▼]

The European eel Anguilla anguilla is a critically endangered fish species as a result of human activities and climate change in river and oceanic ecosystems. Restocking using glass eels in continental freshwater areas is a potential conservation measure for enhancing local eel stocks and for conserving the species in aquatic habitats, where it may otherwise disappear. However, little is known about the fate of these restocked individuals and the early ecological behaviour of the young eels translocated in rivers.A portable radio‐frequency identification (RFID) telemetry system and 12‐mm tags were used to track restocked eels for a duration of 4 years. The aim was to understand the early movement, behavioural traits, dispersal, and habitat use of elvers after restocking performed in 2013 with glass eels in a shallow riverine environment.From the 241 tagged eels (total length, Q50 = 152 mm), 85% were detected in 1968 positions during a period of 4 years, beginning in 2014. Clear seasonality in eel activity was observed, with higher mobility in summer when the water temperature was high (above 12°C). Dispersal was slowed by numerous artificial obstacles and the high carrying capacity of habitats. There was a negative relationship between the body size of eels at tagging and their mobility. Five behavioural categories of mobility patterns were identified: ascending, descending, oscillating with an upstream trend, oscillating with a downstream trend, and stationary. The first four categories depleted with time, in favour of stationary individuals that displayed a highly sedentary lifestyle.This study provides new knowledge of the long‐term dispersal behaviour of restocked eels and the influence of seasons, barriers, and habitats on their colonization strategy changing with time. The results contribute to a better understanding of the issue of uncommon restocking practices in upland rivers. [less ▲]

Detailed reference viewed: 45 (24 ULiège)
See detailFranchissabilité des obstacles aux déplacements des poissons et solutions de défragmentation des cours d'eau
Ovidio, Michaël ULiege

Conference given outside the academic context (2019)

Detailed reference viewed: 27 (4 ULiège)
Full Text
Peer Reviewed
See detailIndividual identification and marking techniques for zebrafish
Delcourt, Johann ULiege; Ovidio, Michaël ULiege; Denoël, Mathieu ULiege et al

in Reviews in Fish Biology and Fisheries (2018), 28(4), 839-864

In laboratory fish research, the zebrafish Danio rerio (Cyprinidae) represents the equivalent of the mouse in mammalian research. This species has become a major model for studies in developmental and ... [more ▼]

In laboratory fish research, the zebrafish Danio rerio (Cyprinidae) represents the equivalent of the mouse in mammalian research. This species has become a major model for studies in developmental and behavioural genetics, neurophysiology, biomedicine, ecotoxicology, and behavioural and evolutionary ecology. To meet the need for accurate and reproducible data in both fundamental and applied sciences, it is of primary importance to be able to tag and/or recognize individual zebrafish. However, classic methods used in fish ecology and aquaculture are generally difficult to apply to such small fish. Recently, various new tagging methods have been developed. This paper presents a first review of current identification and marking methods applied to zebrafish, from external observation methods (such as skin pattern recognition, fin clipping, scale regeneration, colour and transgenic methods) to the most advanced technological developments in electronic (low- and high- radio-frequencies PIT tags, microchip) and image analysis methods (video tracking). This review aims to help researchers and zebrafish facility managers select the identification method (ID) best adapted to their needs. The main characteristics of each ID method are examined (including detection range, durability, speed and repetitiveness, ID code combination, size dependence and ethical considerations), and their pros and cons are summarized in a decision table to help select the most appropriate option for a research or management program. Finally, contextual applications of these ID methods and future developments are discussed. [less ▲]

Detailed reference viewed: 141 (48 ULiège)
Full Text
See detailEvaluation de la qualité biologique des rivières wallonnes sur base des indices biologiques poissons
Dierckx, Arnaud ULiege; Benitez, Jean-Philippe ULiege; Rimbaud, Gilles ULiege et al

Report (2018)

Ce document reprend les informations recueillies dans le cadre d’un travail effectué par l’Université de Liège pour le compte du Service public de Wallonie-DEMNA et financé dans le cadre d’un marché ... [more ▼]

Ce document reprend les informations recueillies dans le cadre d’un travail effectué par l’Université de Liège pour le compte du Service public de Wallonie-DEMNA et financé dans le cadre d’un marché public de services qui a pour objectif l’évaluation de la qualité biologique des eaux de surface basée sur les indices biologiques « poissons » dans seize cours d’eau de Wallonie. [less ▲]

Detailed reference viewed: 40 (7 ULiège)
See detailEtat des connaissances sur le silure dans le bassin du Rhône et de la Meuse
Ovidio, Michaël ULiege; Capra, Hervé

Conference (2018, November)

Detailed reference viewed: 27 (3 ULiège)
Full Text
Peer Reviewed
See detailMovement behaviours of potamodromous fish within a large anthropised river after the reestablishment of the longitudinal connectivity
Benitez, Jean-Philippe ULiege; Dierckx, Arnaud ULiege; Nzau Matondo, Billy ULiege et al

in Fisheries Research (2018), 207

Human activity has caused longitudinal fragmentation of many rivers. Fishways have been installed worldwide, but their successive use by potamodromous species remains poorly documented, particularly in ... [more ▼]

Human activity has caused longitudinal fragmentation of many rivers. Fishways have been installed worldwide, but their successive use by potamodromous species remains poorly documented, particularly in large river ecosystems. Four vertical slot fishways were installed within a 32-km stretch of the lower Belgian Meuse River basin. From 2012 to 2016, n=532 individuals belonging to 11 potamodromous fish species (rheophilic, limnophilic and large carnivorous) were continuously captured in the most downstream fishway (M0), tagged with an RFID transponder and released upstream. These could be further detected in upstream river part within three fishways (M1 and M2 in the Meuse, and O1 in an important tributary, the Ourthe) that were equipped with RFID detection stations. In the first downstream stretch (13 km from M0 to M1) we quantified an ascending rate until M1 (number of individuals detected in M1/ number of individuals tagged in M0) of 32.9% including all individuals tagged, with a maximum value of 67.2% for chub (Squalius cephalus), 40% for pike (Esox Lucius) and 35.5% for nase (Chondrostoma nasus), and a progression time M0 to M1 of 1.1 days per kilometre (d/km), with trout (Salmo trutta) as the fastest species (0.3 d/km). Upstream of the M1 fishway, many individuals of rheophilic species (trout and barbel, Barbus barbus) preferred to enter in the Ourthe tributary (detection at the Ourthe fishway) unlike the upstream Meuse (detection at the most upstream fishway in the Meuse), demonstrating a new accessibility to more adapted spawning sites. Most fish were present within fishways mainly in spring during the circum-spawning migration, and during summer and autumn for dispersal and/or seeking-refuge. The diel activity cycle varied depending on the species, with detection during the entire diel cycle (e.g. chub and barbel), during the day (e.g. trout) and during the night (e.g. catfish, Silurus glanis). The installation of fishways in the degraded river Meuse can be considered adequate for the restoration of the free movement because potamodromous species demonstrated their ability to migrate over long distances (> 20 km) and to reach potential spawning habitats through the reopened access to a tributary. [less ▲]

Detailed reference viewed: 83 (37 ULiège)
See detailProgramme Saumon Meuse : avancées récentes et nouveaux défis.
Rollin, Xavier; Ovidio, Michaël ULiege; Kestemont, Patrick et al

Conference given outside the academic context (2018)

Detailed reference viewed: 40 (4 ULiège)
Full Text
Peer Reviewed
See detailEuropean silver eel (Anguilla anguilla L.) migration behaviour in a highly regulated shipping canal
Verhelst, Pieterjan; Bayens, Raf; Reubens, Jan et al

in Fisheries Research (2018), 206

Among the many man-made structures that facilitate shipping, navigable canals take an important position. These canals may offer energetically favourable migration routes for diadromous fish, but they may ... [more ▼]

Among the many man-made structures that facilitate shipping, navigable canals take an important position. These canals may offer energetically favourable migration routes for diadromous fish, but they may also obstruct fish migration, for instance at shipping locks. Because the use of shipping canals by, and their effects on, mi- grating fish remain unknown, we assessed whether these canals can play a significant role in the migration of the critically endangered European eel. Only one third of 70 acoustically tagged silver eels completed migration through a shipping canal, and did so at a very low pace (average < 0.06 m s−1) due to delays at shipping locks and most likely also due to the disruption of water flow. These delays may come at an energetic cost, hampering the chances of successful migration. Knowledge on the impact of shipping canals on diadromous fish is crucial for proper management regulations. For instance, the observation that eels mostly migrated at night and during spring and autumn can support water managers to define adequate measures to improve eel migration in shipping canals. [less ▲]

Detailed reference viewed: 67 (28 ULiège)
Full Text
See detailReport on the eel stock, fishery and other impacts, in: Belgium 2018
Belpaire, Claude; Breine, Jan; Van Wichelen, Jeroen et al

Report (2018)

Detailed reference viewed: 23 (4 ULiège)
Full Text
Peer Reviewed
See detailFish data of the Belgian River Meuse from 1989 to 2012
Latli, Adrien; Ovidio, Michaël ULiege; Kestemont, Patrick

in Freshwater Metadata Journal (2018), 33(1-5),

During 23 years, 3 institutions sampled fish in the Belgian part of the River Meuse with two distincts methodologies. Data were provided by the survey of fish passages in fish ladders at Tailfer (upstream ... [more ▼]

During 23 years, 3 institutions sampled fish in the Belgian part of the River Meuse with two distincts methodologies. Data were provided by the survey of fish passages in fish ladders at Tailfer (upstream Namur) and Lixhe (downstream Liège) over the 1989-2012 period (Matondo & Ovidio 2016). Fish were collected daily in a trap placed in the upper pool of the ladder when the migration peaks occurred, and twice a week outside the major migration period. All the fish species were identified and species abundances were estimated without taking into account the juveniles and the youngs-of-the-year. Annual fish abundances were expressed as monthly averages. Data from Hastière, Andenne and Visé were provided by electrofishing from a boat along the banks in 1994, 2007, 2008, 2009 and 2010. Abundances were expressed as number of individuals per 100m2 of river sampled. Environmental and invertebrate data of the River Meuse are also available as separate datasets. [less ▲]

Detailed reference viewed: 52 (15 ULiège)
See detailEtude du franchissement de 3 passes à poissons sur la Vesdre aval en 1° catégorie
Watthez, Quentin; Goffaux, Delphine; Sonny, Damien et al

Report (2018)

Detailed reference viewed: 33 (3 ULiège)
Full Text
Peer Reviewed
See detailThe influence of environmental factors on the upstream movements of rheophilic cyprinids according to their position in a river basin
Benitez, Jean-Philippe ULiege; Ovidio, Michaël ULiege

in Ecology of Freshwater Fish (2018), 27(3), 660-671

Throughout their lives, fish accomplish frequent movements between functional habitats that are often triggered by environmental signals. We aimed to determine if rheophilic cyprinids (barbel, Barbus ... [more ▼]

Throughout their lives, fish accomplish frequent movements between functional habitats that are often triggered by environmental signals. We aimed to determine if rheophilic cyprinids (barbel, Barbus barbus and chub Squalius cephalus), living in different places of the same river basin, may develop similar movement periodicities and react identically to environmental cues to carry out their spawning migration. We used the capture data of three modern fish passes that were monitored continuously during three consecutive years (2010 to 2012) in three rivers of the Meuse basin in Belgium. We captured 418 individuals at adult stage, and the capture number per species was greater (80%) in spring (during the spawning migration period). The spawning migration of the barbel occurred earlier (median = 122nd day of the year) and at lower temperatures (median = 14.5°C) in the lowland rivers compared to the upland river (140th day of the year and 18.4°C). For the barbel, migration initiation differed depending on the river but finished under similar environmental conditions. In contrast, for the chub, no significant difference between rivers was observed regarding spawning migration periodicity and environmental cues. Within the same river basin, rheophilic cyprinids demonstrate flexibility in their responses to environmental variables and may optimise the start date of migration to spawning grounds depending on their local environment and individual experiences. This phenomenon was more pronounced in the barbel, which has more specific ecological requirements. [less ▲]

Detailed reference viewed: 84 (34 ULiège)
Peer Reviewed
See detailSeasonal movements and home range use by native cyprinids and non native catfish in a large regulated river
Capra, Hervé; Pella, Hervé; Ovidio, Michaël ULiege

Conference (2018, June)

Detailed reference viewed: 14 (4 ULiège)
Full Text
See detailRapport de convention sur la Réhabilitation du Saumon Atlantique dans le bassin de la Meuse
Ovidio, Michaël ULiege; Dierckx, Arnaud ULiege; Benitez, Jean-Philippe ULiege et al

Report (2018)

Le présent rapport d’activités intègre les travaux des deux équipes universitaires de Namur et de Liège dans la cadre de la convention relative à la réhabilitation du saumon atlantique dans le bassin de ... [more ▼]

Le présent rapport d’activités intègre les travaux des deux équipes universitaires de Namur et de Liège dans la cadre de la convention relative à la réhabilitation du saumon atlantique dans le bassin de la Meuse. [less ▲]

Detailed reference viewed: 74 (13 ULiège)
Full Text
Peer Reviewed
See detailIndividual movements, home ranges and habitat use by native rheophilic cyprinids and non-native catfish in a large regulated river
Capra, Hervé; Pella, Hervé; Ovidio, Michaël ULiege

in Fisheries Management and Ecology (2018), (25), 136-149

The mobility patterns of two native species, barbel, Barbus barbus (L.) and chub, Squalius cephalus (L.), and of one non-native fish species, the catfish Silurus glanis (L.), were assessed on a 35.5-km ... [more ▼]

The mobility patterns of two native species, barbel, Barbus barbus (L.) and chub, Squalius cephalus (L.), and of one non-native fish species, the catfish Silurus glanis (L.), were assessed on a 35.5-km reach of the Upper Rhône River, a strong flowing river with notable thermal regime alterations. An active acoustic tracking technique adapted to large rivers allowed (1) the identification of longitudinal home ranges, movements and preferred habitat at large scale, and (2) the analysis of the influence of discharge and water temperature on the movement patterns of the fish. The active fish-tracking system recorded 1,572 fish localisations over 7 months on a weekly basis for 80% of the tagged fish (37 barbel, 23 chub and 13 catfish). Compared with the catfish, barbel and chub showed wider longitudinal home ranges, more movements >1 km and higher interindividual variability. The catfish preferred artificially heated habitats with less morphological diversity. The three species were more often localised in river sections with high density of woody debris. The results suggest that habitat degradation is more damaging for cyprinids in large modified rivers, while the catfish seemed less, impacted. [less ▲]

Detailed reference viewed: 77 (32 ULiège)