Publications of Pascal Poncin
Bookmark and Share    
Full Text
See detailÉvaluation de la qualité biologique des rivières wallonnes sur base des indices biologiques poissons. Support technique aux inventaires 2019
Dierckx, Arnaud ULiege; Benitez, Jean-Philippe ULiege; Rimbaud, Gilles ULiege et al

Report (2019)

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 onze cours d’eau de Wallonie. [less ▲]

Detailed reference viewed: 49 (4 ULiège)
Full Text
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: 202 (65 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: 74 (12 ULiège)
Full Text
See detailNeurogenomic profiling reveals distinct gene expression profiles between brain parts that are consistent in Ophthalmotilapia cichlids
Derycke, Sofie; Kever, Loïc ULiege; Van den Berge, K et al

in Frontiers in Neuroscience (2018), 12

Detailed reference viewed: 32 (10 ULiège)
Full Text
See detailLimited possibilities for prezygotic barriers in the reproductive behaviour of sympatric Ophthalmotilapia species (Teleostei, Cichlidae)
Kever, Loïc ULiege; Parmentier, Eric ULiege; Derycke, S. et al

in Zoology (2018), 126

Since prezygotic rather than postzygotic barriers are believed to maintain the diversity of closely related sympatric cichlids, differences in phenotypic traits and reproductive behaviours are likely ... [more ▼]

Since prezygotic rather than postzygotic barriers are believed to maintain the diversity of closely related sympatric cichlids, differences in phenotypic traits and reproductive behaviours are likely involved in maintaining species boundaries. Here, we focused on the reproductive behaviour of three Ophthalmotilapia species with distributions that only overlap on a small stretch of the shore line of Lake Tanganyika. Repeated introgression of mitochondrial DNA between these species was previously reported, which suggested they can hybridise. Our aim is to test the hypothesis that reproductive behaviour acts as a prezygotic barrier that prevents frequent hybridisation in sympatric Ophthalmotilapia species. We performed a quantitative analysis of twelve reproductions (four for O. ventralis, six for O. nasuta, one for O. boops, and one between a female O. ventralis and a male O. nasuta). Although similar ethograms were obtained for these reproductions, the O. ventralis and O. boops males displayed a behaviour that was never performed by O. nasuta males. This behaviour was displayed during courtship and we called it 'invite'. In O. ventralis, we could show that it was associated with the emission of a single pulse sound. The comparison of O. nasuta and O. ventralis reproductive behaviours also revealed some quantitative differences: O. ventralis males showed the location of the bower more often to the female, whereas O. ventralis females followed the male more often. The similarity between the reproductive behaviours in O. ventralis and O. nasuta could explain the occurrence of the heterospecific spawning event recorded between an O. nasuta male and an O. ventralis female. Importantly, few eggs were laid and the maternal mouthbrooding that resulted from this heterospecific reproduction only lasted for two days, which suggested the abortion of egg development. Hence, in the absence of conspecifics, courtship and mating behaviours alone do not constitute perfect prezygotic barriers between these two species. © 2017 Elsevier GmbH. [less ▲]

Detailed reference viewed: 53 (10 ULiège)
Full Text
See detailEvaluation de la qualité biologique des rivières wallonnes sur base des indices biologiques poissons. Support technique aux inventaires 2015.
Rimbaud, Gilles ULiege; Ovidio, Michaël ULiege; Dierckx, Arnaud ULiege et al

Report (2015)

L’Université de Liège (LDPH) a effectué le travail décrit dans ce rapport pour le compte du Service public de Wallonie qui a financé ce projet dans le cadre d’une convention ayant pour objectif ... [more ▼]

L’Université de Liège (LDPH) a effectué le travail décrit dans ce rapport pour le compte du Service public de Wallonie qui a financé ce projet dans le cadre d’une convention ayant pour objectif l’évaluation de la qualité biologique des eaux de surface basée sur les indices biologiques « poissons » dans quatorze cours d’eau de Wallonie. Cette mission s’inscrit dans le contexte de la mise en oeuvre de la Directive 2000/60/CE établissant un cadre pour une politique communautaire dans le domaine de l’eau. [less ▲]

Detailed reference viewed: 151 (22 ULiège)
Full Text
See detailUsing zero-inflated models to predict the relative distribution and abundance of roe deer over very large spatial scales
Bouyer, Yaëlle ULiege; Rigot, Thibaud; Panzacchi, Manuela et al

in Annales Zoologici Fennici (2015), 52

In Norway, recovering populations of large carnivores commonly prey on roe deer (Capreolus capreolus). Understanding predator habitat use and ecology requires fine-scaled information on prey distribution ... [more ▼]

In Norway, recovering populations of large carnivores commonly prey on roe deer (Capreolus capreolus). Understanding predator habitat use and ecology requires fine-scaled information on prey distribution and abundance. However, the massive spatial scales at which large carnivores use the landscape presents many practical and statistical challenges for developing functional prey distribution models. Pellet-count data from >1000 km of transects gathered across southeastern Norway from 2005 to 2011 were used to derive a map of relative prey abundance for roe deer. These data were modeled using zero-inflated hurdle models using both environmental and anthropogenic variables. Snow depth and agricultural fields were the most significant variables in explaining both presence and abundance. Internal k-cross validation of the model showed medium accuracy (Spearman r = 0.35), whereas external evaluation carried out on the basis of independently collected snow-tracking data (Spearman r = 0.37) and hunting statistics (Spearman r = 0.88) showed high accuracy. The map generated can facilitate both the study of broad scale processes linking predators and prey as well as roe deer management in southeastern Norway. [less ▲]

Detailed reference viewed: 199 (10 ULiège)
Full Text
See detailLe suivi des populations de poissons après rempoissonnements
Philippart, Jean-Claude ULiege; Ovidio, Michaël ULiege; Poncin, Pascal ULiege

Conference (2014, November 13)

Detailed reference viewed: 76 (22 ULiège)
Full Text
See detailEvaluation de la qualité biologique des rivières wallonnes sur base des indices biologiques poissons. Support technique aux inventaires 2014.
Rimbaud, Gilles ULiege; Ovidio, Michaël ULiege; Dierckx, Arnaud ULiege et al

Report (2014)

Ce rapport final présente les résultats des inventaires piscicoles effectués en juin-juillet et en septembre-octobre 2014 ainsi que le calcul des indices biologiques « poissons » (IBIP et EFI).

Detailed reference viewed: 130 (29 ULiège)
Full Text
See detailFin flickering and associated sounds in the cichlid fish Ophthalmotilapia ventralis: a preliminary study.
Kever, Loïc ULiege; Poncin, Pascal ULiege; Parmentier, Eric ULiege

Poster (2014)

Fin flickering was defined as rapid movements of the fins. The behavioral function of such movements is however not well established. Depending on the species investigated, they were considered as comfort ... [more ▼]

Fin flickering was defined as rapid movements of the fins. The behavioral function of such movements is however not well established. Depending on the species investigated, they were considered as comfort movements (e.g. removal of minor irritations) or alarm for young. In the cichlid Etroplus maculatus they allow homogenous repartition of eggs on the substrate. We studied visual and acoustical behavior of five Ophthalmotilapia ventralis (two males and three females) reared in a 240 l tank. Pectoral fin flickering associated with sound production was often observed, especially from fish that established a territory. With the exception of the butterflish Chaetodon mutlicinctus and gouramis, this aspect of fin flickering is generally overlooked in teleosts. First observations support the fact that sounds (peak frequency and pulse duration: 562±95 Hz and 14±5 ms, respectively) are not emitted during all kinds of fin movements but mainly during some caudo-rostral horizontal fin sweeps. In-depth studies are however required to better characterize the movements and understand what morphological traits are responsible for the sound production. Further investigations are also needed to determine if fin flickering has a role in O. ventralis social interactions [less ▲]

Detailed reference viewed: 57 (8 ULiège)
Full Text
See detailEssai d’estimation des dommages piscicoles engendrés par les prises d’eau industrielles et les turbines hydroélectriques dans les cours d’eau de la Province de Liège. Partie F. Les centrales hydro-électriques sur la Vesdre
Philippart, Jean-Claude ULiege; Ovidio, Michaël ULiege; Rimbaud, Gilles ULiege et al

Report (2013)

Ce rapport à la Commission provinciale de Liège du Fonds piscicole de Wallonie est un dossier bibliographique qui analyse l’impact potentiel sur les populations de poissons des neuf centrales ... [more ▼]

Ce rapport à la Commission provinciale de Liège du Fonds piscicole de Wallonie est un dossier bibliographique qui analyse l’impact potentiel sur les populations de poissons des neuf centrales hydroélectriques installées dans le sous-bassin hydrographique de la Vesdre. [less ▲]

Detailed reference viewed: 219 (32 ULiège)
Full Text
See detailEssai d’estimation des dommages piscicoles engendrés par les prises d’eau industrielles et les turbines hydroélectriques dans les cours d’eau de la Province de Liège. Partie E. Chapitre 8. Les centrales hydro-électriques sur la Méhaigne, petit affluent de la Meuse dans le sous-bassin Meuse aval
Philippart, Jean-Claude ULiege; Ovidio, Michaël ULiege; Rimbaud, Gilles ULiege et al

Report (2013)

Ce rapport à la Commission provinciale de Liège du Fonds piscicole de Wallonie est un dossier bibliographique qui analyse l’impact potentiel sur les populations de poissons des quatre centrales ... [more ▼]

Ce rapport à la Commission provinciale de Liège du Fonds piscicole de Wallonie est un dossier bibliographique qui analyse l’impact potentiel sur les populations de poissons des quatre centrales hydroélectriques (voir tableau A) installées sur la Méhaige, principal, petit affluent de la rive gauche de la Meuse, sous-bassin Meuse aval. L’impact de la production d’hydroélectricité sur les poissons de la Méhaigne concerne principalement le cours inférieur de la rivière où se succèdent sur une distance de 5,9 km trois micro-centrales qui utilisent un débit de 2-3 m3/s, pratiquement égal au module. L’utilisation d’un tel débit sur aussi petite rivière favorise un fort pourcentage d’entrainement de l’eau et des poissons dévalants dans l’installation de turbinage (turbine Kaplan, turbine Francis ou vis hydrodynamique). Dans ce cas, il faut envisager un effet cumulé de la cascade des trois microcentrales de la Basse Méhaigne. [less ▲]

Detailed reference viewed: 115 (31 ULiège)
Full Text
See detailVideo multitracking of fish behaviour: a synthesis and future perspectives
Delcourt, Johann ULiege; Denoël, Mathieu ULiege; Ylieff, Marc ULiege et al

in Fish and Fisheries (2013), 14(2), 186-204

With the development of digital imaging techniques over the last decade, there are now new opportunities to study complex behavioural patterns in fish (e.g. schooling behaviour) and to track a very large ... [more ▼]

With the development of digital imaging techniques over the last decade, there are now new opportunities to study complex behavioural patterns in fish (e.g. schooling behaviour) and to track a very large number of individuals. These new technologies and methods provide valuable information to fundamental and applied science disciplines such as ethology, animal sociology, animal psychology, veterinary sciences, animal welfare sciences, statistical physics, pharmacology, as well as neuro- and ecotoxicology. This paper presents a review of fish video multitracking techniques. It describes the possibilities of tracking individuals and groups at different scales, but also outlines the advantages and limitations of the detection methods. The problem of occlusions, during which errors of individual identifications are very frequent, is underlined. This paper summarises different approaches to improving the quality of individual identification, notably by the development of three-dimensional tracking, image analysis and probabilistic applications. Finally, implications for fish research and future directions are presented. [less ▲]

Detailed reference viewed: 443 (121 ULiège)
Full Text
See detailSpawning behaviour and mating success in hybrids of silver bream (Blicca bjoerkna L.) and rudd (Scardinius erythrophthalmus L.) in an experimental environment
Nzau Matondo, Billy ULiege; Ovidio, Michaël ULiege; Philippart, Jean-Claude ULiege et al

in Animal Biology (2013), 63

The egg-release, mating, courting and aggressive acts for the spawning behaviour as well as the survival rates after spawning at stages of eyed embryos, viable hatchlings, and larvae to dry food ... [more ▼]

The egg-release, mating, courting and aggressive acts for the spawning behaviour as well as the survival rates after spawning at stages of eyed embryos, viable hatchlings, and larvae to dry food consumption for the mating success were studied in cultured silver bream Blicca bjoerkna × rudd Scardinius erythrophthalmus hybrids at their first sexual maturity. Experiments were conducted in experimental environments simulating natural reproductive conditions of the parental species. Spawning behaviour was analysed over 1 day from 8.00 to 18.00 hours using a remote-controlled video. Mating success was assessed from eggs and hatched embryos collected on the spawning ground. The results showed that these hybrids exhibited all the reproductive behaviours of the parental species with significantly more courtship than mating. Each egg-release act was accompanied by mating behaviour, involving all the experimental males. A surprising aggressive behaviour was observed in one male which attacked all other experimental fish. Successful mating resulted in the presence of fertilized eggs, the production of hatched embryos in experiments, and the survival of larvae at the dry food consumption stage. However, the low viable hatchling rate observed could indicate a very low chance of survival for these hybrids in rivers in which the occurrence of post-F1 individuals may be more possible by backcrossing. [less ▲]

Detailed reference viewed: 90 (10 ULiège)
Full Text
See detailBehaviours Associated with Acoustic Communication in Nile Tilapia (Oreochromis niloticus)
Longrie, Nicolas; Poncin, Pascal ULiege; Denoël, Mathieu ULiege et al

in PLoS ONE (2013), 8(4), 61467

Detailed reference viewed: 112 (26 ULiège)