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See detailDistribution and characteristics of aquatic habitats of newts and yellow-bellied toads in the district of Ioannina (Epirus, Greece)
Denoël, Mathieu ULg

in Herpetozoa (2004), 17(1/2), 49-64

The study describes the aquatic habitats and distribution of Triturus alpestris veluchiensis Wolterstorff 1935, T. carnifex macedonicus (Karaman, 1922), T. vulgaris graecus (Wolterstorff, 1905) and ... [more ▼]

The study describes the aquatic habitats and distribution of Triturus alpestris veluchiensis Wolterstorff 1935, T. carnifex macedonicus (Karaman, 1922), T. vulgaris graecus (Wolterstorff, 1905) and Bombina variegata scabra (Küster, 1843) in the district (“nomos”) of Ioannina, Northern Greece. Bombina variegata was found to be the most common species, followed by T. alpestris and T. carnifex while T. vulgaris seemed to be rare. The four taxa differed in habitat use and geographic distribution. Records of T. alpestris were limited to the highest sites in the north and east of the district. This species inhabited alpine lakes, but also smaller habitats such as drinking troughs and ponds. Four populations contained paedomorphic individuals. Triturus vulgaris appeared to be restricted to low altitude sites in the centre of the district where it lived in reservoirs, watering basins and drinking troughs. Triturus carnifex and B. variegata had a wider distribution and occupied a broader spectrum of habitats. Bombina variegata was the only species studied which lived in running waters (small brooks). Neither newts nor yellow-bellied toads were found in large rivers and lakes. In the district of Ioannina both habitat variety and distribution range of newts and Yellow-bellied Toads turned out to be greater than previously known. Alpine lakes containing very large populations of paedomorphic individuals should be protected given the rarity of the phenomenon. [less ▲]

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See detailEcological and pathological factors related to trace metal concentrations in harbour porpoises Phocoena phocoena from the North Sea and adjacent areas
Das, Krishna ULg; Siebert, Ursula; Fontaine, Michaël ULg et al

in Marine Ecology. Progress Series (2004), 281

There is growing concern about the health status of the harbour porpoise Phocoena phocoena in the North Sea and adjacent areas. The interaction between toxicological results (Zn, Cd, Cu, Fe, Se, Hg ... [more ▼]

There is growing concern about the health status of the harbour porpoise Phocoena phocoena in the North Sea and adjacent areas. The interaction between toxicological results (Zn, Cd, Cu, Fe, Se, Hg), stable isotope data (delta(13)C and delta(15)N) and the most common pathological findings, namely emaciation and lesions of the respiratory system, were investigated in 132 porpoises collected along the coasts of northern France, Belgium, Germany, Denmark, Iceland and Norway between 1994 and 2001. The body condition of harbour porpoises stranded on the French, Belgian and German coasts was poor compared to that of by-catch individuals from Iceland and Norway, as reflected by blubber thickness and hepatic to total body-mass ratio. High Zn and Hg concentrations were observed in some porpoises collected along the southern North Sea coast compared to by-catch individuals from Iceland, Norway and the Baltic Sea. Increasing Zn levels were observed with deteriorating health condition (emaciation and bronchopneumonia), while Hg increases were not significant. The increases were not related to shrinking liver mass which remained unchanged. These observations indicate a general redistribution of trace metals within the organs (muscles and blubber to liver), as a result of protein and lipid catabolism. Muscle delta(13)C and delta(15)N values remained unchanged with deteriorating body condition. Cd concentrations were associated only with age and low delta(15)N values, indicating that high Cd concentrations in Iceland and Norway porpoises may be partly diet-related, i.e. a result of Cd contaminated prey. [less ▲]

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See detailLandscape research in Belgium
Antrop, Marc; Belayew, Dimitri; Droeven, Emilie ULg et al

in Belgeo (2004), 2-3

In the federal state Belgium, landscape research evolved from regional geographical monographs to more applied research that focuses upon the specific problems in each of the regions. In the highly ... [more ▼]

In the federal state Belgium, landscape research evolved from regional geographical monographs to more applied research that focuses upon the specific problems in each of the regions. In the highly urbanized Flanders region in the north, aspects of suburbanization and fragmentation are the most important. Landscape research involves geographers, historians, archaeologists, agronomists, foresters, ecologists and nature conservationists all dealing with specific goals and tasks. The integration is mainly achieved in spatial planning. In the Walloon region large areas are still rural and have a large forest cover, while urbanized zones are rather concentrated. Landscape research focuses here mainly upon the rural involving geographers, agronomists and planners. The natural and scenic aspects of the landscape dominate and the study of the historical development of the landscape is less pronounced. In Brussels Capital region little attention is given to landscape aspects, as social and typical urban problems dominate. Consequently, different landscape typologies are used in Belgium. [less ▲]

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See detailPerho Irmeli, Catalogue of Arabic Manuscripts. Codices Arabici Arthur Christenseniani
Bauden, Frédéric ULg

in Bulletin Critique des Annales Islamologiques (2004), 20

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See detailCase report : A suspicion of cortico-cerebral necrosis in a Belgian Blue herd after ingestion of moulded silage
Guyot, Hugues ULg; Sandersen, Charlotte ULg; Aliaoui, Hamani et al

Poster (2004)

After ingestion of moulded beet pulp silage, cases of cortico-cerebral necrosis (CCN) and mortalities have been observed in a Belgian Blue (BB) herd. Contamination with Paecilomyces spp., a mould that ... [more ▼]

After ingestion of moulded beet pulp silage, cases of cortico-cerebral necrosis (CCN) and mortalities have been observed in a Belgian Blue (BB) herd. Contamination with Paecilomyces spp., a mould that produces byssochlamic acid, malformins and patulin, has been proven. Among these toxins, patulin is known to have cancerogenic, immunosuppressive and tremorgenic effects, but also acts on the respiratory and digestive systems. Twenty-five days after progressive introduction of beet pulp silage into the ration of a dual purpose BB herd, most of the animals showed diminished appetite, salivation and decreased milk production. All 35 cows were reluctant to consume the beet pulp silage, but continued to eat grass silage voluntarily. Seven of them showed anorexia and nervous symptoms, like head pressing and blindness. Four animals died within 1 week after onset of neurological symptoms. No necropsy has been performed, since legislation does not allow post-mortem examination of the central nervous system in the field. The three survivors had been treated successfully with thiamine (10 mg/kg, IV, TID) and recovered completely within five days. After the beet pulp silage had been identified as causative agent, it had been removed from the animals’ ration and no more clinical case has been observed. Four weeks later, the same beet pulp silage has been reintroduced into the animals’ ration and provoked again diminished appetite, salivation and a decrease in milk production in most of the animals. Clinical signs were also suggesting lead poisoning but any contact with lead containing material could have been excluded. Silage was obviously moulded and analysis revealed the presence of 1.6 million CFU Paecilomyces spp./g of silage. Although no further investigation has been made to identify the mycotoxins, an intoxication with patulin has been suspected, since other mycotoxins produced by these species are less toxic. Although it has not been described that CCN can be induced by ingestion of Paecilomyces spp., it seems that there is a close relation between ingestion of Paecilomyces-contaminated silage and observed clinical signs in this herd. [less ▲]

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See detailTrace elements deficiencies in the pathogenesis of respiratory distress syndrome in the mature newborn calf
Guyot, Hugues ULg; Aliaoui, Hamani; Rollin, Frédéric ULg

Poster (2004)

In Belgium, respiratory distress syndrome (RDS) is one of the leading causes of neonatal death in the mature hypermuscled Belgian Blue calf (BB) but also occurs in other cattle breeds. Major clinical ... [more ▼]

In Belgium, respiratory distress syndrome (RDS) is one of the leading causes of neonatal death in the mature hypermuscled Belgian Blue calf (BB) but also occurs in other cattle breeds. Major clinical signs (tachypnea, tachycardia and sometimes depression) develop in the first hours after birth and are due to insufficiency of functional surfactant. Knowing that trace elements deficiencies can slow pulmonary maturation, the aim of this study was to investigate trace elements status in 10 RDS affected BB herds in comparison with 6 reference herds without any evidence of RDS. In each herd, blood was sampled from 10 pregnant or freshly calved healthy cows. In each blood sample, the plasmatic zinc (Zn) and copper (Cu) contents and erythrocytic glutathion peroxydase activity (GSH-pxe) were measured and considered normal when above 15 μmol/L, 14 μmol/L and 250 IU/gHb, respectively. A herd was deficient in one element if at least 30 % of sampled animals were out of normal range for this element. Milk was also sampled and pooled from 10 other cows or, when possible, bulk milk was taken. Milk iodine (I) content was considered normal when above 80 μg/L. Results were compared between groups by Chi-square test. All RDS affected herds had low Zn and Cu concentrations and low GSH-pxe activity. Eight out of 10 had low I in milk. In the non-RDS affected herds, only 1 herd was deficient in I, Zn, Cu and had low GSH-pxe activity, 2 herds were deficient in Zn and Cu and 1 herd was deficient in Cu. RDS affected herds were significantly more often deficient in I and GSH-pxe than non-affected herds. It seems that the trace elements selenium (Se), Zn and Cu play an essential role in the development of RDS. The same applies for I, although not deficient in all herds. The reason for this might be that milk samples were taken during lactation, when cows’ nutrition was different and, in any case, supplemented in I. In mature babies, the same RDS is observed but its etiology is still unclear, although I deficiency in the mother is suspected to play a major role in pathogenesis. Furthermore, it has been demonstrated that a Se-dependent deiodinase is responsible for transformation of thyroxine (T4) into tri-iodothyronine (T3), which is essential for effective surfactant production. In conclusion, results suggest an association between RDS in mature newborn calves and trace elements deficiencies, especially Se and I, that can be responsible for primary surfactant insufficiency. [less ▲]

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See detailCompte rendu
Purnelle, Gérald ULg

in Corpus (2004), 3

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See detailReprésentations des réseaux de mots associés
Lejeune, Christophe ULg

in Purnelle, Gérald; Fairon, Cédrick; Dister, Anne (Eds.) Le poids des mots (2004)

Networks of associated words are used in qualitative data analysis software such as Candide, Réseau-Lu T-Lab on one side and Prospéro on the other side. The precise algorithm of both Candide and Prospéro ... [more ▼]

Networks of associated words are used in qualitative data analysis software such as Candide, Réseau-Lu T-Lab on one side and Prospéro on the other side. The precise algorithm of both Candide and Prospéro is described. Strength and limits of such a feature are compared with the gain it provides to social scientists. The paper concludes on a procedure helping to judge the adequacy and accuracy of categories of analysis constructed by the researcher. [less ▲]

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See detailExporation cognitive et neuropsychologique du fonctionnement de la mémoire épisodique: Les processus de reconnaissance et la mémoire du contexte temporel
Bastin, Christine ULg

Doctoral thesis (2004)

The main objective of our dissertation was to contribute to a better understanding of the cognitive processes involved in episodic memory and their cerebral substrates. More specifically, our work focused ... [more ▼]

The main objective of our dissertation was to contribute to a better understanding of the cognitive processes involved in episodic memory and their cerebral substrates. More specifically, our work focused on two questions. First, we were interested in the contribution of recollection and familiarity to recognition memory. On the one hand, we examined the performance on recognition tasks when recollection cannot be used anymore (studies 1, 2 and 3) and, on the other hand, the influence of frontal lobe lesions on the processes involved in a recognition memory task (study 4). Second, we explored the processes recruited in an important aspect of episodic memory, namely, memory for the temporal context of events, by studying the nature of the difficulties encountered by older adults on a task assessing memory for temporal information (studies 5 and 6). [less ▲]

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See detailFacteurs protecteurs familiaux de la deliquance juvenile feminine
Rasseneur, D.; Born, Michel ULg

in Revue de Psychoéducation (2004), 33(2), 321-333

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See detailRegards croisés sur les phénomènes de violence en milieu scolaire: élèves et équipes éducatives
Galand, B.; Philippot, P.; Petit, Sylvie et al

in Revue des Sciences de l'Education (2004), XXX(3), 465-487

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See detailCes adolescents qui agressent leur mère
Born, Michel ULg; Helin, Dominique; Chevalier, Vinciane

in Neuropsychiatrie de l'Enfance et de l'Adolescence (2004), 52

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See detailMonitoring System For The Biocontrol Agent Pichia Anomala Strain K Using Quantitative Competitive Pcr-Elosa
Pujol, M.; De Clercq, D.; Cognet, S. et al

in Plant Pathology (2004), 53(1), 103-109

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See detailFirst report of Pear blister canker viroid, Peach latent mosaic viroid, and Hop stunt viroid infecting fruit trees in Tunisia.
Hassen, I. F.; Kummert, J.; Marbot, S. et al

in Plant Disease (2004), 88(10),

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See detailStudy of the role and origin of endotoxemia in the pathogenesis of respiratory distress syndrome in the newborn calf.
Aliaoui, Hamani; Danlois, Fabien; Guyot, Hugues ULg et al

Poster (2004)

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