International Forum on Ecosystem Approaches to Human Health, Montréal, QC (Canada), May 18-23, 2003

Réunion: Forum international sur les approches écosystémiques de la santé humaine, 18-23 mai 2003, Montréal, QC, CAIntervieweur: Robert PrévostTitre restituéFichier audio numérique en format WAVEntrevue avec le chercheur Laamari Abdelali, ingénieur à l'Institut national de recherche agronomique de Rabat au Maroc, chargé d'un projet de recherche sur l'impact de l'utilisation des eaux usées en agriculture que finance le CRD

Ploidy level, genome size and genetic variability among a collection <em>of Medicago sativa L</em>. Gabsi as revealed by flow cytometry

BAP GEAPSI CT1 INRAInternational audienceThe flow cytometry technique has been applied in order to check the ploidy level of seven provenances of local alfalfa (Medicago sativa L.) Gabsi, to estimate the genome (pg DNA) size of these alfalfa lines and to verify whether any genetic differences existed between these provenances belonging to the same population. Flow cytometry technique enabled us to show that all sources are tetraploid but also showed genetic variability that can be explained by the effect of microclimate, even if it is obvious that all these sources belong to a same unique population

Population dynamics of cattle ticks in Gharb Region in Morocco

This study was conducted in the rural town of Sidi Boubker El Haj in Gharb Region, Morocco, from November 2009 to October 2010. The objective was to identify the various tick species collected on cattle, to monitor their seasonal dynam­ics and determine their abundance and infestation variability according to the age and sex of the hosts. Thirty cattle head were monitored and sampled monthly for a year. A total of 6899 ticks were collected. Identification revealed nine species belonging to five genera with the following prevalence: Rhi­picephalus bursa 28.61%, Ixodes ricinus 26.39%, Hyalomma lusitanicum 23.33%, Rhipicephalus turanicus 14.44%, Hya­lomma detritum detritum 13.06%, Rhipicephalus sanguineus 1.39%, Hyalomma marginatum marginatum 1.11%, Derma­centor marginatus 1.11% and Haemaphysalis sulcata 0.83%. I. ricinus was active in winter, R. bursa, Hyalomma lusitanicum and R. turanicus in spring, and Hyalomma d. detritum in sum­mer. R. sanguineus, Hyalomma m. marginatum, D. margina­tus and Haemaphysalis sulcata were less prevalent and their presence on cattle may be referred to as occasional parasitism. This study on tick population dynamics may help implement a strategy for tick control and tick-transmitted disease control, taking into account the parasite seasonal activity, parasitic loads, and infestation rates

Corrosion inhibition of carbon steel in hydrochloric acid 0.5M by hexa methylene diamine tetramethyl-phosphonic acid

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