Éric Le Boulengé

Catholic University of Louvain | UCLouvain · Earth and Life Institute

Stoddart, M. 2015. Adam’s Nose, and the Making of Humankind. World Scientific Publishing Co., Inc., Hackensack, New York, xxii + 258 pp. ISBN: 9781783265183, price (soft cover), $28. This book tells the story of the central role played by the sense of smell in the evolution of Homo sapiens . Consider the following: Do you feel comfortable with you...

FUNDP). 6 rue Muzet. B-5000 Namur, Belgium ²Ecology and Biogeography Unit, catholic University of Louvain (UCL). 4-5 Place croix du Sud. B-1348 Louvain-la-neuve, Abstract Odours emitted by rodent species convey cues about their overall body conditions and provide valuable information intervening in many aspects of their social relationships such as...

Bank voles detect and discriminate other organisms, e.g., predators versus conspecifics, based on olfactory clues like urine, feces, or scent marks. The present field enclosure experiment was set up to determine whether scented food is sufficient for inducing such differentiated reactions in bank voles. Fourteen different odors were tested, divided...

BIODEGRADABLE MULCHING MATERIALS IMPROVE EARLY GROWTH OF WILD CHERRY SEEDLINGS The present article is a preliminary form of a thorough analysis aiming at assessing the effectiveness of biodegradable mulching materials on early growth of wild cherry (Prunus avium L.). A large selection of mulches was tested on a herbaceous fallow land in the Seine-e...

The bush mango (Irvingia gabonensis) is a multipurpose species Dahomey gap. Its fruits (even nonmatured) are systematically gathered for consumption and marketing. Few studies have been done on the ethnobotany and endogenous practices determining its conservation of the species in Benin. This study aims to produce a database on those aspects in Ben...

In order to compare the threonine (Thr) requirement and retention efficiency of rainbow trout and Atlantic salmon, we conducted a feeding experiment with 11 diets. For both species, we studied the effects of increasing dietary L-Thr: 5, 6.25, 7.5, 8.75, 10, 11.25, 12.5, 13.75, 15, 16.25, 21.75 g/kg dry matter (DM), on protein gain, Thr gain and Thr...

L’essai 77/03/02 a pour objectif de comparer les effets de 8 modalités de paillage, dont un témoin, un désherbage chimique et deux produits, les plaques ISOROY et les plaques HPK, chacun sous 3 formes/tailles différentes, sur la croissance de deux essences, le chêne sessile et le merisier. Les arbres ont été plantés en décembre 2003, mesurés en avr...

Six varieties of isaño (Tropaeolum tuberosum), an Andean edible tuber, were analysed. The aim was to characterise qualitatively and quantitatively their content of glucosinolates and to determine concentration changes of these compounds upon delayed harvest. Additionally, exploratory assays were carried out on the effect of postharvest cold storage...

In QTL analysis of non-normally distributed phenotypes, non-parametric approaches have been proposed as an alternative to the use of parametric tests on mathematically transformed data. The non-parametric interval mapping test uses random ranking to deal with ties. Another approach is to assign to each tied individual the average of the tied ranks...

Entomologists traditionally use the Jolly–Seber analytical method (JSAM) to estimate demographic parameters from capture–mark–recapture data, although more powerful approaches like the constrained linear models (CLM) have been developed and are commonly and successfully applied to vertebrates. Demographic parameters (i.e., survival, capture, and re...

The composition of the PCB mixture which is transferred from mother to pup in grey seals Halichoerus grypus throughout lactation was measured in the successive compartments of transfer: maternal blubber, maternal serum, milk and pup serum. Mother-pup pairs were captured regularly between birth and weaning on the Isle of May, Scotland. The PCB profi...

PCB contamination was measured in the milk and serum of grey seal Halichoerus grypus mothers and in the serum of their pups sampled from 2 to 5 times between parturition and weaning on the Isle of May, Scotland, in 1998 and 2000. Blubber biopsies were also taken from the lactating females at early and late lactation in 2000. Concentrations of PCBs...

This preliminary study proposes small trapping grids as an alternative to traditional large grids for the simultaneous monitoring of several rodent populations by capture--recapture. Monthly trapping sessions of wood mouse Apodemus sylvaticus (Linnaeus, 1758) and bank vole Clethrionomys glareolus (Schreber, 1780) were carried on over a small area (...

Metapopulation models predicting the persistence of species on the verge of extinction in fragmented landscapes have to include local population dynamics. In this paper, we report on a 9-yr study in which a patchy population of the bog fritillary was monitored each year, with special focus on quantifying demographic parameters. We parameterised var...

The main objective is to assess statistically the InSAR DEM accuracy with regards to dGPS elevation. The spatial analysis of the sytematic error demonstrated the need for correction of local trends by plan equation locally computed. The analysis of the random error leads to propose a model to predict a priori the Z error as a function of the relief...

Spore production of arbuscular mycorrhizal fungi is important in inoculum production, and monoxenic culture is a promising way to produce large amounts of contaminant-free inoculum. Mass production of spores is therefore essential and mathematical models useful as descriptive and predictive tools of sporulation dynamics. We followed the sporulation...

The carotene content of six Azolla strains was analysed at four representative stages of their population growth curve under two culture conditions (greenhouse and growth chamber). On fresh material, the carotene content ranged from 206 to 619 mg kg À1 on a dry matter (DM) basis and differed signi®cantly between strains. In both culture conditions,...

Cranial morphometry was studied in local populations of muskrats inhabiting ponds along various tributaries in a single river drainage (150 km2) in southern Belgium. Despite the absence of noticeable environmental heterogeneity across this region, significant morphological differences were found among local populations. This differentiation was not...

Purpose. Electroporation, a method of reversibly permeabilizing lipid bilayers by the application of an electric pulse, has been shown to induce increased transdermal passage of molecules. The aim of the present report was to study in vitro with hairless rat skin the potential of electroporation for transdermal delivery of fentanyl. Results. The ap...

This 1993 book examines case studies of North American Quaternary mammalian evolution within the larger domain of evolutionary theory. It presents studies of a variety of taxa (xenarthrans, rodents, carnivores, ungulates) examined over several temporal scales, from a few thousand years during the Holocene to millions of years of late Pliocene and P...

Seven species were captured (6 rodents, 1 marsupial), but only 4 yielded sufficient captures for a quantitative study (3 sigmodontines, 1 hystricomorph). Reproduction was strongly seasonal, starting and ending earlier in Octodon degus and Akodon longipilis (July-November) than in Phyllotis darwini and Akodon olivaceus (September-January for the for...

Wood mice Apodemus sylvaticus occupy all woodlot and large wood sites and also surrounding cultivated and old fields. Individual mobility is high within and between plots, and their numbers show strong seasonal and local fluctuations. Bank vole Clethrionomys glareolus is restricted to certain habitats, its dispersal capacity is poor and its densiti...

The aquatic and riparian vegetation of a small Belgian stream is used as a first example for a phytosociological system based on multi-scaled pattern analysis. Surveying is continuous, the stream being divided into ecologically homogeneous sections. Some sections were sampled meter by meter. A pattern analysis of the whole stream and of some of its...

The dynamics of a muskrat population was studied from February 1970 to January 1972 on a fairly isolated stretch (7.5 km. long) of the river la Houille in South-Belgium, by capture-mark-release followed by a complete extermination on all of the hydrographis basin of the river.

This paper reviews data on the population ecology of Octodon degus, an hystricomorph rodent endemic to Chile. It is based upon personal field observations as well as on data from the literature. Field work was carried out on two sites located at «Los Dominicos», 20 km east from Santiago, using capture-recapture methods. The first site (A) is covere...

Le Boulenge E., 1977: Two ageing methods for muskrats: live or dead animals. Acta theriol., 22, 34: 509—520 [With 4 Tables & 5 Figs.]. A new method is presented for ageing living muskrats, Ondatra zibethicus (Linnaeus, 1766). It consists of fitting a second-order polynomial to a set of measurements of tail length, taken at various ages of an unknow...

La Dicotélydone annuelle Helenium aromaticum se distribue en agrégats sur une strate homogène de graminées qui tapissent le sol. Par des échantillonnages sur le terrain et des expériences de laboratoire, on a recherché les facteurs écologiques qui pourraient expliquer cette distribution. Des expériences de coexistence entre Helenium aromaticum et g...

The muskrat (Ondatra zibethica zibethica Linn.) is a rodent adapted for semi-aquatic life. Its original geographical distribution ranges over North-America, but due to fur-breeding, it has settled in the Northern parts of Europe and Asia. Still water areas such as lakes, ponds, marshes are the preferred habitats, but the muskrat may also be found i...