References of "Jauniaux, Thierry"
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See detailMorbillivirus in common seals stranded on the coasts of Belgium and northern France during summer 1998
Jauniaux, Thierry ULg; Boseret, Géraldine ULg; Desmecht, M. et al

in Veterinary Record : Journal of the British Veterinary Association (2001), 148(19), 587-591

Sixteen common seals (Phoca vitulina) were stranded on the Belgian and northern French coasts during the summer of 1998. Eleven (10 pups and one adult) were sampled for histopathological ... [more ▼]

Sixteen common seals (Phoca vitulina) were stranded on the Belgian and northern French coasts during the summer of 1998. Eleven (10 pups and one adult) were sampled for histopathological, immunohistochemical, serological. bacteriological, parasitological and virological investigations. The main gross findings were severe emaciation, acute haemorrhagic enteritis, acute pneumonia, interstitial pulmonary emphysema and oedema, and chronic ulcerative stomatitis. Microscopical lung findings were acute to subacute pneumonia with interstitial oedema and emphysema. Severe lymphocytic depletion was observed in lymph nodes. Severe acute to subacute meningoencephalitis was observed in one animal. Specific staining with two monoclonal antibodies directed against canine distemper virus (CDV) and phocine distemper virus was observed in a few lymphocytes in the spleen and lymph nodes of three seals. Anti-CDV neutralising antibodies were detected in sera from six animals. Seven of the seals were positive by reverse transcriptase-PCR for the morbillivirus phosphoprotein gene. The lesions observed were consistent with those in animals infected by a morbillivirus, and demonstrated that distemper has recently recurred in North Sea seals. [less ▲]

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See detailMorbillivirus infections in marine mammals stranded along the Belgian and Northern French coasts between 1990 and 2000
Jauniaux, Thierry ULg; Boseret, Géraldine ULg; Coignoul, Freddy ULg

in Proceedings 14th biennal conference on the biology of marine mamals (2001)

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See detailMarine mammals from the North Sea: Insights in their feeding ecology and nutritional status from stable isotopes ratio and heavy metal concentrations
Das, Krishna ULg; Jauniaux, Thierry ULg; Holsbeek, Ludo et al

Poster (2001)

The relationship between trace metal levels, trophic position and health status has been investigated in North Sea marine mammals. Stable isotope ratio (15N and 13C, mass spectrometry) and trace metal ... [more ▼]

The relationship between trace metal levels, trophic position and health status has been investigated in North Sea marine mammals. Stable isotope ratio (15N and 13C, mass spectrometry) and trace metal analyses (Cd, Pb, Cu, Zn, Se, Hg, I.C.P Spectrometry and flameless atomic absorption) have been performed in tissues of 52 harbour porpoises Phocoena phocoena, 27 harbour seals Phoca vitulina, 9 white-beaked dolphins Lagenorhynchus albirostris, 6 grey seals Halichoerus grypus, 1 hooded seal Cystophora cristata, 2 white-sided dolphin Lagenorhynchus acutus, 7 sperm whales Physeter macrocephalus and 4 fin whales Balaenoptera physalus, found stranded on the Northern French, Belgian and Southern Dutch coasts. The lowest 15N value has been measured in fin whales, and the highest in white-beaked dolphins, grey and common seals, suggesting a higher trophic position. Sperm whales, white-sided dolphins and hooded seal have strongly negative 13C values and high renal cadmium levels (258, 88 and 62 µg Cd .g-1dw, respectively) indicating that they might feed, at least in part, on oceanic cephalopods. High Hg liver concentrations can be encountered in older animals and reflect a cumulative storage of detoxified HgSe over the whole life span rather than a bioamplification process. Zn, Cu and Hg concentrations were higher in harbour porpoises from the Southern North Sea compared to other areas. Some individuals were severely emaciated as shown by their muscle atrophy and reduced blubber thickness. Hepatic Zn and Se concentrations were significantly higher in emaciated juvenile porpoises than in normal animals suggesting a severe disturbance of the metal homeostasis. To conclude, within the North Sea, trace metal levels in marine mammals display strong intra- and interspecies variations due to geographic origin, age, diet, trophic position but also by nutritional status of the individuals, raising the question of the suitability of marine mammals as valuable bioindicators of trace metal pollution. [less ▲]

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See detailCombined Effects of Experimental Heavy-Metal Contamination (Cu, Zn, and CH3Hg) and Starvation on Quail's Body Condition: Parallelism with a Wild Common Guillemot (Uria aalge) Population Found Stranded at the Belgian Coast
Debacker, Virginie ULg; Rutten, Astrid; Jauniaux, Thierry ULg et al

in Biological Trace Element Research (2001), 82(1-3, Summer), 87-107

Combined effects of heavy-metal contamination (Cu, Zn, and CH3Hg) and starvation were tested on common quails (Coturnix coturnix japonica) and used as a model for comparison with a wild common guillemot ... [more ▼]

Combined effects of heavy-metal contamination (Cu, Zn, and CH3Hg) and starvation were tested on common quails (Coturnix coturnix japonica) and used as a model for comparison with a wild common guillemot (Uria aalge) population found stranded at the Belgian coast. Appropriate heavy-metal levels were given to the quails to obtain concentrations similar to those found in the seabirds's tissues. The contaminated animals were then starved for 4 d to simulate the evident malnutrition symptoms observed at the guillemot's level. In such conditions, food intake and total-body weight are shown to decrease in contaminated individuals with simultaneous significant hepatic and renal increase of the heavy-metal concentrations. Like guillemots, higher heavy-metal levels were observed in those contam- inated quails that had also developed a cachectic status characterized by a general atrophy of their pectoral muscle and complete absence of subcutaneous and/or abdominal fat depots. Although likely the result of a general protein catabolism during starvation, it is suggested that these higher metal levels could as well enhance a general muscle wasting process (cachectic status). [less ▲]

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See detailPathology of morbillivirus infections in marine mammals
Jauniaux, Thierry ULg; Coignoul, Freddy ULg

in Annales de Médecine Vétérinaire (2001), 145(2), 76-

Morbillivirus infections were described since 1988 in marine mammals including pinnipeds and cetaceans. Since, numerous outbreaks, responsible for thousands marine mammals death, as well as sporadic cases ... [more ▼]

Morbillivirus infections were described since 1988 in marine mammals including pinnipeds and cetaceans. Since, numerous outbreaks, responsible for thousands marine mammals death, as well as sporadic cases, have occurred in various populations from North Atlantic, Mediterranean Sea, Baikal Lake, Caspian Sea, and recently from northern Pacific. Clinical signs and macroscopic lesions are similar between species infected by morbillivirus and are close to those reported in dog with canine distemper. Under microscope, characteristic les ions are interstitial bronchopneumonia, lymphoid depletion and subacute encephalitis. Syncytia and inclusion bodies are frequently observed in lesions and epithelia. Lymphoid depletion promotes secondary infections by opportunistic pathogens, responsible in many cases of the animals death. Various parameters explain the high sensibility of certain population such as the species, the naive immunological status and vectors intervention for the disease. [less ▲]

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See detailHeavy Metals Contamination and Body Condition of Wintering Guillemots (Uria Aalge) at the Belgian Coast from 1993 to 1998
Debacker, Virginie ULg; Jauniaux, Thierry ULg; Coignoul, Freddy ULg et al

in Environmental Research (2000), A84(3), 310-317

A sample of 166 common guillemots (Uria aalge) recovered from Belgian beaches during five wintering seasons, from 1993-1994 to 1997-1998, were examined. At necropsy, postmortem examination including body ... [more ▼]

A sample of 166 common guillemots (Uria aalge) recovered from Belgian beaches during five wintering seasons, from 1993-1994 to 1997-1998, were examined. At necropsy, postmortem examination including body mass, fat reserves, presence or not of intestinal contents, eventual status of oiling, and pathological changes (cachexia, acute hemorrhagic gastroenteropathy (GEAH)) was attributed to each individual. Mild to severe cachexia, a pathology characterized by moderate to severe atrophy of the pectoral muscle as well as reduced amounts or absence of subcutaneous and/or abdominal fat, was observed for most specimens (85.8%). Heavy metal analyses (Cu, Zn, Fe, Cd, Ni, Cr, and Pb) of the tissues (typically liver, kidney, and pectoral muscle) were performed, and total lipids were determined (liver and pectoral muscle). The guillemots collected at the Belgian coast exhibited higher Cu and Zn concentrations compared to individuals collected in more preserved areas of the North Sea such as the northern colonies. A general decrease of their total body mass as well as liver, kidney, and pectoral muscle mass was associated to increasing cachexia severity. Moreover, significantly increasing heavy metal levels (Cu and Zn) in the tissues as well as depleted muscle lipid contents were observed parallel to increasing cachexia severity. On the contrary the organs' total metal burden barely correlates to this status. These observations tend to indicate a general redistribution of heavy metals within the organs as a result of prolonged starvation and protein catabolism (cachectic status). Such a redistribution could well be an additional stress to birds already experiencing stressfull conditions (starvation, oiling). [less ▲]

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See detailL'entérotoxémie bovine en Belgique. II. Epizootiologie élémentaire et pathologie descriptive.
Manteca, Christophe; Daube, Georges ULg; Jauniaux, Thierry ULg et al

in Annales de Médecine Vétérinaire (2000), 145

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See detailPathological Findings in Two Fin Whales (Balaenoptera Physalus) with Evidence of Morbillivirus Infection
Jauniaux, Thierry ULg; Charlier, G.; Desmecht, M. et al

in Journal of Comparative Pathology (2000), 123(2-3, Aug-Oct), 198-201

Two immature female fin whales stranded on the Belgian and French coastlines, were examined post mortem. The main gross findings were massive parasitic infestation, associated with a large thrombus in one ... [more ▼]

Two immature female fin whales stranded on the Belgian and French coastlines, were examined post mortem. The main gross findings were massive parasitic infestation, associated with a large thrombus in one whale, and severe emaciation. Microscopical investigations revealed multinucleated syncytia with large intranuclear inclusion bodies in various tissues, and positive immunolabelling for morbillivirus antigens. Other evidence of morbillivirus infection was provided by the demonstration of specific viral structures in syncytia and in cell cultures, and the detection of neutralizing antibodies to canine distemper virus. To the authors>> knowledge, this is the first firm report of morbillivirus infection in baleen whales. [less ▲]

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See detailAdenovirus infections in pigeons
Duchatel, Jean-Pierre ULg; Marlier, Didier ULg; Jauniaux, Thierry ULg et al

in Annales de Médecine Vétérinaire (2000), 144(1), 13-17

This paper describes the different clinical aspects of the adenovirus infections in pigeons. Etiology, epidemiology, pathogenesis, diagnosis and treatment are discussed. The two specific clinical ... [more ▼]

This paper describes the different clinical aspects of the adenovirus infections in pigeons. Etiology, epidemiology, pathogenesis, diagnosis and treatment are discussed. The two specific clinical syndromes of pigeons are mainly described: classical adenovirus and necrotizing-hepatitis. [less ▲]

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See detailDistemper in seals stranded on the Belgian coast during 1998 summer
Jauniaux, Thierry ULg; Desmecht, M.; Van Gompel, J. et al

in annual proceeding (1999)

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See detailPost mortem investigations on a fin whale Balaenoptera physalus stranded along the Belgian coast
Jauniaux, Thierry ULg; Charlier, G.; Desmecht, M. et al

in Proceeding of the 13th Annual conference of the European Cetacean Society (1999)

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See detailPractical protocol for large marine mammals necropsy and beach management
Jauniaux, Thierry ULg; Garcia Hartmann, M.; Coignoul, Freddy ULg

in meeting report (1998)

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See detailStranding in Belgium
Jauniaux, Thierry ULg; Coignoul, Freddy ULg

in meeting report (1998)

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See detailLesions of morbillivirus infection in a fin whale (Balaenoptera physalus) stranded along the Belgian coast
Jauniaux, Thierry ULg; Charlier, G.; Desmecht, M. et al

in Veterinary Record : Journal of the British Veterinary Association (1998), 143(15), 423-424

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See detailPathological investigations on guillemots (Uria aalge) stranded on the Belgian coast during the winter of 1993-94
Jauniaux, Thierry ULg; Brosens, L.; Meire, P. et al

in Veterinary Record : Journal of the British Veterinary Association (1998), 143(14), 387-390

Pathological investigations were carried out on 67 guillemots (Uria aalge) washed up on the Belgian coast between November 1993 and March 1994. Emaciation and acute haemorrhagic gastroenteropathy were ... [more ▼]

Pathological investigations were carried out on 67 guillemots (Uria aalge) washed up on the Belgian coast between November 1993 and March 1994. Emaciation and acute haemorrhagic gastroenteropathy were observed in more than 70 per cent of the birds. There was no statistical relationship between the level of oil contamination and the severity of the lesions. Differences in bodyweight were accounted for by age, sex, emaciation, and acute haemorrhagic gastroenteropathy. The birds had a severe weight deficit but the concentrations of pollutants were below acutely toxic levels. [less ▲]

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See detailPostmortem Investigations on Winter Stranded Sperm Whales from the Coasts of Belgium and the Netherlands
Jauniaux, Thierry ULg; Brosens, L.; Jacquinet, E. et al

in Journal of Wildlife Diseases (1998), 34(1), 99-109

During winter 1994-95, four and three sperm whales (Physeter macrocephalus) were stranded along the Belgian and the Dutch coasts, respectively. Necropsies and tissue samplings were collected 24 hrs post ... [more ▼]

During winter 1994-95, four and three sperm whales (Physeter macrocephalus) were stranded along the Belgian and the Dutch coasts, respectively. Necropsies and tissue samplings were collected 24 hrs post mortem. Lesions on several whales included round and linear skin scars, ventral skin abrasions, acute skin ulcers, acute ulcerative stomatitides, acute to chronic external otitides, and passive visceral congestion. In addition, these sperm whales appeared to be debilitated with severe weight deficit, had blubber thickness reduction, the absence of abdominal fat, and the intestinal tracts were almost empty. Three categories of lesions and their possible relation with the stranding were evaluated. Cutaneous scars observed on the seven whales appeared to have no relation with the stranding. The poor body condition and acute integument ulcerative lesions were present before the stranding. Ventral skin abrasions and visceral passive congestion were caused by the strandings. Absence of food in the alimentary tracts, evidence of weight loss and blubber thickness reduction were compatible with an extended presence of the sperm whales in the North Sea, where adequate food is not available. This might lead to progressive weakness, predisposing the animals to secondary pathogens such as viral diseases. Finally, the coastal configuration of the southern North Sea makes it a trap for sperm whales which have entered the area during their wanderings. [less ▲]

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