Jean-Aimé RakotoarisoaInstitut National des Langues et Civilisations Orientales | INALCO · Dept Afrique and Indian ocean
Doctorat + HDR
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Citations since 2017
8 Research Items
September 1973 - September 2013
University of Antananarivo, Comores
- Research Director
January 1973 - January 2006
University of Antananarivo, Comoros Island
- Managing Director
The urban peoples of the Swahili coast traded across eastern Africa and the Indian Ocean and were among the first practitioners of Islam among sub-Saharan people1,2. The extent to which these early interactions between Africans and non-Africans were accompanied by genetic exchange remains unknown. Here we report ancient DNA data for 80 individuals...
Only 400 km off the coast of East Africa, the island of Madagascar is one of the last large land masses to have been colonized by humans. While many questions surround the human occupation of Madagascar, recent studies raise the question of human impact on endemic biodiversity and landscape transformation. Previous genetic and linguistic analyses h...
The peoples of the Swahili coast of eastern Africa established a literate urban culture by the second millennium CE. They traded across eastern Africa and the Indian Ocean and were among the first sub-Saharan practitioners of Islam. An open question has been the extent to which these early interactions between Africans and non-Africans were accompa...
En 2020, en raison de la pandémie, il n’a pas été possible d’organiser une campagne de recherche sur le terrain avec une équipe internationale dans le nord-est de Madagascar. Les investigations se sont poursuivies malgré tout. Plusieurs missions de prospection ont été menées à bien par les chercheurs résidants dans le nord-est. Ils ont complété la...
While admixed populations offer a unique opportunity to detect selection, the admixture in most of the studied populations occurred too recently to produce conclusive signals. By contrast, Malagasy populations originate from admixture between Asian and African populations that occurred ~27 generations ago, providing power to detect selection. We an...
Le projet qui débute en 2017 porte sur l'étude de la production du fer et celle des vases en chloritoschiste dans le Nord-Est de Madagascar pendant la période médiévale. Il cherche à élucider l'origine et les modalités de transfert des techniques dans le contexte du réseau d'échanges à longue distance de l'Océan Indien. La première campagne de rech...
Significance The origins of the Malagasy raise questions about ancient connections between continents; moreover, because ancestors are fundamental to Malagasy society, Malagasy origins is also a heated topic around the country, with numerous proposed hypotheses. This study provides a comprehensive view of genomic diversity (including maternal linea...
The debate on the peopling of Madagascar has long been dominated by historical linguistics and the observed similarities between Malagasy and Austronesian languages. It is clear from the linguistic evidence that there have been several periods of human contact with, or migration to, Madagascar—and that these also brought different domesticates to t...
The genetic basis of androstenone anosmia has been well studied due to androstenone’s putative role as a human sex pheromone and its presence in pork meat. Polymorphisms have been identified on the olfactory receptor gene OR7D4, which significantly afffect perception of androstenone pleasantness and intensity in several Western populations. This st...
Significance The Mikea are the last known Malagasy population reported to be still practicing a hunter-gatherer lifestyle. Earlier writers thought the Mikea were descended from ancient forager groups who have maintained their way of life up to the present. However, our analyses show that the Mikea are not a remnant population and, to the contrary,...
A major necropolis, discovered in the late 19th century at Vohemar, is located on a peninsula along the east coast of northern Madagascar. Excavations in the past century suggest that a prosperous civilization — the Rasikajy — buried their dead at this cemetery. The civilization seems to have disappeared from the region probably sometime in the 16t...
Archaeological excavations in northern Madagascar during the first half of the 20th century have revealed the presence of a former prosperous civilisation known as the Rasikajy civilisation. Little is known about the origin of this civilisation and how and when they first arrived in Madagascar. The most striking evidence for the Rasikajy civilisati...
3. G. Heurtebize et J.A. Rakotoarisoa (Universite de Tananarive) decrivent en detail les diverses etapes de la fabrication des rabanes dans une region du Nord-ouest de Madagascar, ou s'est maintenu un antique procede qui rappelle Vikat du monde indonesien.