Publications of Roland Libois
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See detailForaging and feeding ecology of the Serotine bat Eptesicus serotinus
KERVYN, Thierry; Brasseur, Jasmine; Motte, Grégory et al

in Bat Research News (1998), 39(3), 84

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See detailMammals from the Azores islands (Portugal): an updated overview
Mathias, Maria da Luz; Ramalhinho, Maria Graça; Santos-Reis, Margarida et al

in Mammalia (1998), 62(3), 397-407

Nine species of mammals are recorded for the Azores islands: one insectivore (Erinaceus europaeus), two bats (Myotis myotis, Nyctalus azoreum), one lagomorph (Oryctolagus cuniculus), three rodents (Rattus ... [more ▼]

Nine species of mammals are recorded for the Azores islands: one insectivore (Erinaceus europaeus), two bats (Myotis myotis, Nyctalus azoreum), one lagomorph (Oryctolagus cuniculus), three rodents (Rattus norvegicus, R. rattus, Mus musculus domesticus) and two carnivores (Mustela nivalis, M. furo). Here, notes on the origin and known distribution are given for each species, together with taxonomical and ecological cmments. Except for bats all the remaining species seem to have been introduced under the influence of the man's exploratory and commercial activities [less ▲]

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See detailLa biodiversité animale en Région wallonne: état des lieux
Libois, Roland ULiege

in Le réseau écologique, actes du colloque d'Arquennes (1997)

Etat général du statut des vertébrés. Banalisation de la faune et altération des écosystèmes. Trois points à discuter en fonction de la conservation de la biodiversité: i) introduction d'animaux de souche ... [more ▼]

Etat général du statut des vertébrés. Banalisation de la faune et altération des écosystèmes. Trois points à discuter en fonction de la conservation de la biodiversité: i) introduction d'animaux de souche étrangère (y compris pour le repeuplement des chasses et des rivières) ii) dissémination d'organismes transgéniques et iii) perte de la diversité dans la recherche : l'université connaît une dérive utilitariste ou marchande, souffre d'une tendance à l'uniformisation et perd son indépendance. [less ▲]

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See detailRégime et tactique alimentaires de la loutre (Lutra lutra) dans le Massif Central
Libois, Roland ULiege

in Vie et Milieu (1997), 47(1), 33-45

Otter spaints were collected in 1991 on a seasonal basis in the river Chavanon catchment, a tributary of the river Dordogne, in central France. Small sized species (bullhead, three-spined stickleback ... [more ▼]

Otter spaints were collected in 1991 on a seasonal basis in the river Chavanon catchment, a tributary of the river Dordogne, in central France. Small sized species (bullhead, three-spined stickleback, gudgeon and minnow) are the most numerous items in the diet: they account for more than 50% of the 3,148 identified preys. However, when expressed in relative biomass, their importance falls down (8 %). In fact, the brown trout, large cyprinid fish, birds and mammals make up the bulk of the diet. We found strong differences linked to the general habitat types and also seasonal ones. Frogs are mainly preyed upon during the spring whereas the snakes are exclusively taken in the summer and autumn months. Gudgeon and insects are also mainly summer and autumn preys. Perch and large cyprinid fish remais are more frequent during winter and even spring. The present results confirm the opportunistic way of predation of the otter and the fact that its hunting takes place more on the bottom and along the river banks than in the open water. [less ▲]

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See detailAlcedo atthis : Kingfisher
Libois, Roland ULiege

in Hagemeijer, Ward J.M.; Blair, Michael J. (Eds.) The EECC Atlas of European breeding birds (1997)

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See detailSuivi satellitaire de la migration automnale de la cigogne noire. Aléas et perspectives d'avenir
Libois, Roland ULiege; Jadoul, Gérard

in Aves (1997), 34(1), 20-22

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See detailUtilisation de l'habitat par la sérotine commune Eptesicus serotinus en Lorraine belge
Kervyn, Thierry; Brasseur, Jasmine; Libois, Roland ULiege

in Bulletin de la Société Neuchâteloise des Sciences Naturelles (1997), 120(2), 35-41

The radiotracking of 10 serotine bats during a period of 73 nights shows that the animals hunt mainly at forest edges and above meadows. The mean distance between the main diurnal roost and hunting ... [more ▼]

The radiotracking of 10 serotine bats during a period of 73 nights shows that the animals hunt mainly at forest edges and above meadows. The mean distance between the main diurnal roost and hunting grounds is 2.1 +/- 1.2 km (n = 24). Secondary diurnal roosts are used within a radius of 250 m of the main diurnal quarters. Nocturnal resting places are situated in beech forests (Fagus sylvatica) near feeding areas. The activity area (minumum area method) of radiotracked serotine bats, all originating from the same colony, stretches to 15.8 km². [less ▲]

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See detailNotes of the flea fauna (Insecta, Siphonaptera) of the terrestrial azorean mammals
Libois, Roland ULiege; Fons, Roger; Mathias, Maria da Luz et al

in Arquivos do Museu Bocage. Nova Série (1997), 3(1), 1-11

During three successive years, field samplings of wild mammals were organised on different Azorean islands and the ectoparastes were collected. Among 340 murid rodents, 31 did bear at least one flea ... [more ▼]

During three successive years, field samplings of wild mammals were organised on different Azorean islands and the ectoparastes were collected. Among 340 murid rodents, 31 did bear at least one flea. Nosopsyllus l. londiniensis has been found on the mouse in São Miguel. Stenoponia t. tripectinata has been discovered in Terceira and in São Miguel, mainly on house mice and on one black rat out of 121. Nosopsyllus fasciatus was present on the mouse and on both the black and the Norway rats. Its presence has been evidenced in four islands: São Miguel, Terceira, Graciosa and Flores. Numerous rabbits were also examined in the visited islands (São Miguel, Terceira, Pico, São Jorge, Faial and Flores) and were found heavily parasited by their commonest flea, Spilopsyllus cuniculi. In Flores, however, that flea seems to be lacking. Though no systematic search has been done on domestic animals, the presence of Ctenocephalides f. felis is also reported from Flores, Terceira and Graciosa whereas C. canis has been found on a dog in Florès. The flea fauna of the Azorean archipelago is therefore characterized by a few species amongst the most cosmopolitan ones [less ▲]

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See detailFirst epidemiological data on pathogenic leptospires isolated on the Azorean islands
Collares-Pereira, Margarida; Korver, H.; Terpstra, W. J. et al

in European Journal of Epidemiology (1997), 13

Insectivores (Erinaceus europaeus) and rodents (Rattus rattus, R. norvegicus and Mus musculus) from different islands of the Azores archipelago were found to carry three distinct Leptospira interrogans s ... [more ▼]

Insectivores (Erinaceus europaeus) and rodents (Rattus rattus, R. norvegicus and Mus musculus) from different islands of the Azores archipelago were found to carry three distinct Leptospira interrogans s.l. serovars (copenhageni, icterohaemorrhagiae and ballum) which have never been previously investigated there. The house mouse and the black rat were the major Leptospira reservoir showing isolation rates ranging from 0% for both species (in Graciosa) to 88 % and 33 %, respectively (in São Miguel). This study also showed that the majority of the animals with positive kidney cultures exhibited specific agglutinins agaibst the isolated strains of Leptospira. The observed isalation rates in the different islands, with a very interesting island variation in prevalence, suggest that small mammals, serving as sylvatic reservoirs of pathogenic leptospires, may represent an important risk to the health of humans and the livestock, particularly in the islands of Terceira and São Miguel. [less ▲]

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See detailConservation de la nature: un combat sns cesse renouvelé
Libois, Roland ULiege

Learning material (1996)

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See detailResearch programme on the European otter in the Trebon biosphere reserve (Czech Republic)
Rosoux, René; Libois, Roland ULiege

Report (1996)

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See detailExpérience unique: la cigogne noire
Jadoul, Gérard; Libois, Roland ULiege

Learning material (1996)

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See detailPremigratory movements of a juvenile black stork in southern Belgium
Libois, Roland ULiege; Jadoul, Gérard

in IInd International conferrence on the black stork (1996, March)

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See detailThe current situation of wild mammals in Belgium: an outline
Libois, Roland ULiege

in Hystrix: the Italian Journal of Mammalogy (1996), 8(1-2), 35-41

The distrbution of the wild mammals of Belgium has been intensively stutied during the years '78-81'. It was the first time that such a work was undertaken in Belgium and could lead to a better ... [more ▼]

The distrbution of the wild mammals of Belgium has been intensively stutied during the years '78-81'. It was the first time that such a work was undertaken in Belgium and could lead to a better understanding of the current status of the different species. Conservation measures were olso proposed to the political authorities who thereafter edicted a legal protection of the most vulnerable species. Unfortunately, habitat protection is rather unachieved and the situation of the most endangered species is still getting worse. [less ▲]

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See detailDifférenciation génétique et morphologique du mulot, Apodemus sylvaticus, dans le bassin Méditerranéen occidental
Michaux, Johan ULiege; Libois, Roland ULiege; Fons, Roger

in Vie et Milieu (1996), 46(3-4), 193-203

Many questions are still unanswered about the biogeography and the origin of the wood mouse in the Mediterranean area, namely on the islands where some giant forms are described. In order to characterize ... [more ▼]

Many questions are still unanswered about the biogeography and the origin of the wood mouse in the Mediterranean area, namely on the islands where some giant forms are described. In order to characterize the genetic structure of these insular populations and their level of morphological differentiation, 232 animals originating from 30 localities situated on several western Mediterranean islands and on the continent, either along the sea coast or more inland, were trapped. Their skulls were measured and their mtDNA purified and analysed by RFLP techniques. The wood mice living on small islands are generally bigger than their relatives living on the continent whereas the size of those living on larger islands is quite the same. This kind of insular gigantism ought to be more an adaptive response to peculiar insular environmental conditions (particularly a lower predation pressure) than a consequence of a founder effect. The mtDNA of the wood mice from north-eastern Spain belongs to the previously identified northwestern group (Michaux et al., 1996). Consequently, the Pyrenees are not a biogeographic barrier to the wood mouse. The Sicilian mice, which are genetically different from all the other west European or north-African animals, are morphologically similar to the Sardinian and Italian ones. [less ▲]

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See detailDéplacements prémigratoire et itinéraire de migration d'une cigogne noire (Cicinia nigra) juvénile suivie par télémétrie satellitaire
Libois, Roland ULiege; Jadoul, Gérard

in Aves (1996), 33(1), 1-10

On 19th of July 1995, a juvenile black stork was caught in the vicinity of Bastogne (Province of Luxembourg, Belgium) and was fitted a PTT platform weighing about 75 grams. The locations obtained by the ... [more ▼]

On 19th of July 1995, a juvenile black stork was caught in the vicinity of Bastogne (Province of Luxembourg, Belgium) and was fitted a PTT platform weighing about 75 grams. The locations obtained by the Argos system were sorted according to their precision and the fixes of good quality (A,0,2 or 3 in the Argos classification) were mapped. From the 19th July to the first migration day (28 August at 09h GMT), more than fifty percent of the 109 obtained fixes are located inside a zone of 100 km² (5.65 km radius) centered near the capture point. Moreover, that zone bas been visited nearly every day by the bird. Twenty more percent of the fixes are situated in a wider area of 300 km² (9.77 km radius). That region is covered by spruce plantations, deciduous forests and cattle meadows with numerous small watercourses and several ponds including fish ponds. Some medium distance (10 to 110 km apart from the home range centre) movements were also recorded, mainly eastwards and westwards. No difference has been evidenced in the home range use during the 4 decades of monitoring. The migration travel was monitored till the 06th September, when the transmitter failed due to a technical misconception. At that time, the stork was located in the region of Fès (Morocco). Within 9 days, the bird has travelled a distance of ca 2,400 km (mean daily movement: 237 km). The Pyrenees were crossed in the high valley of the river Tech (Pyrénées Orientales, France) only 3 days after the departure and the bird has been seen by Spanish colleagues when flying across the strait of Gibraltar (Tarifa, 5 September, 07.55 h GMT). [less ▲]

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See detailUse of day resting places by the European otter (Lutra lutra) in the Marais Poitevin (France). A radiotracking study
Rosoux, René; Libois, Roland ULiege

in Mathias, Maria da Luz; Santos Reis, Margarida; Amori, Giovanni (Eds.) et al European mammals. Proceedings of the European congress of Mammalogy (1996)

1. resting place situation. 2. pattern use of the resting places. 3. occupation pattern of resting place and the characteristics of th habitat

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See detailBiogeography and taxonomy of Apodemus sylvaticus (the woodmouse) in the Tyrrhenian region: Enzymatic variations and mitochondrial DNA restriction pattern analysis
Michaux, Johan ULiege; Filippucci, M. G.; Libois, Roland ULiege et al

in Heredity (1996), 76(Part 3), 267-277

In the western Mediterranean area, the taxonomic status of the various forms of Apodemus sylvaticus is quite unclear. Moreover, though anthropogenic, the origins of the island populations remain unknown ... [more ▼]

In the western Mediterranean area, the taxonomic status of the various forms of Apodemus sylvaticus is quite unclear. Moreover, though anthropogenic, the origins of the island populations remain unknown in geographical terms. In order to examine the level of genetic relatedness of insular and continental woodmice, 258 animals were caught in 24 localities distributed in Belgium, France, mainland Italy, Sardinia, Corsica and Elba. Electrophoresis of 33 allozymes and mtDNA restriction fragments were performed and a UPGMA dendrogram built from the indices of genetic divergence. The dendrogram based on restriction patterns shows two main groups: 'Tyrrhenian', comprising all the Italian and Corsican animals and 'North-western', corresponding to all the other mice trapped from the Pyrenees to Belgium. Since all the Tyrrhenian mice are similar and well isolated from their relatives living on the western edge of the Alpine chain, they must share a common origin. The insular populations are consequently derived from peninsular Italian ones. From a taxonomic point of view and taking the priority rules into account, we have to invalidate A. s. clanceyi Harrison, 1948 and to consider the Tyrrhenian woodmice as belonging to A. s. milleri de Beaux, 1926, whereas the North-western ones must be referred to as the nominal subspecies. As far as the Elban woodmouse is concerned, at the moment we prefer to keep its present subspecific status because we only studied one animal. [less ▲]

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See detailContamination of European otters (Lutra lutra) by PCB congeners and organochlorinated pesticides in the wetlands of western France
Tans, Michael; Hugla, Jean Louis; Libois, Roland ULiege et al

in Netherlands Journal of Zoology (1996), 46(3-4), 326-336

During the forty years, otter (Lutra lutra) populations have severely declined over much of Europe. One of the main regression factors appears to be pollution by organochlorine xenobiotics, especially ... [more ▼]

During the forty years, otter (Lutra lutra) populations have severely declined over much of Europe. One of the main regression factors appears to be pollution by organochlorine xenobiotics, especially PCBs. The present study took place in France, in the wetlands of the Atlantic border, where otter populations are considered to the stable. Muscle, pericaudal fat, and liver of 33 otters were analysed for 22 PCB congeners and organochlorine pesticides. The mean concentrations of organochlorinated pesticides in samples are relatively low (from 0 to 5.71 mg/kg lipid weight). The PCB concentrations are higher (mean in muscular tissue: 26.19 mg/kg lipid weight), but still remain low compared to similar samples from other countries. The relation between PCB concentration and physiological variables is discussed. Congener specific analysis shows an important contamination due to highly chlorinated congeners and a poor contaminatin due to low chlorinated congeners. Potential hazards due to organochlorinated compounds are also discussed. [less ▲]

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See detailLes populations de rats noirs insulaires de l'ouest de l'Europe. Essai préliminaire de caractérisation génétique (caryotype et ADN mitochondrial)
Libois, Roland ULiege; Torrico, Jorge; Ramalhinho, Maria Graça et al

in Vie et Milieu (1996), 46(3-4), 213-218

The colonisation of Europe by the black rat (Rattus rattus) dates back only to the Roman times. This rodent is now widespread all over the continent as well as on many islands where it was introduced by ... [more ▼]

The colonisation of Europe by the black rat (Rattus rattus) dates back only to the Roman times. This rodent is now widespread all over the continent as well as on many islands where it was introduced by man. In some instances, insular populations are morphologically differentiated by their greater size. In order to study the possible origin of these insular populations, rats were caught on many Mediterranean (Sicily, Sardinia, Lavezzi, Corsica, Elba, Porquerolles) and Atlantic islands (Ré, Oléron, Azores) and compared to animals from continental Europe (Spain), and Africa (Tunisia, Benin). Their karyotype was determined and their mtDNA restriction patterns studied using the HAE III and RSA I endonucleases and a polyacrylamide gel electrophoresis. These patterns appear very similar to each other though one of them is specific to the African animals, probably indicating that Europe and Africa were colonised by different strains. [less ▲]

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