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N°47 - novembre / décembre 2008

Sciences au sud - IRD periodical > Sciences au Sud issues

Marine and halieutic biodiversity, Technology transfer, Continental biodiversity and plants improvement - Peru, Brazil, France

December 2008

- Another step towards domestication of the Amazonian giant fish

The Amazon and its tributaries harbour nearly one-tenth of the world’s biodiversity of freshwater fish. Among the 2500 species recorded, Arapaima gigas is one of the most emblematic.
In Brazil it is better known as the pirarucu, in Peru as the paiche, and is one of the largest species of freshwater fish. Some specimens can reach 4 m in length with a weight of 200 kg.
This graceful predator has become a victim of over-fishing, however, and figures on the IUCN Red List of Threatened Species.

- Interview with Bernard Delay,

Bernard Delay chairs the Fondation pour la recherche sur la biodiversité, an institution set up in 2008 with the participation of eight scientific organizations including the IRD

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Strong Harmattan winds amplify meningitis epidemics

Scientific newssheets

Water and soil ressources, Continental biodiversity and plants improvement, Marine and halieutic biodiversity - Niger, Burkina Faso

November 2008

Every year, Sub-Saharan Africa is the scene of a meningitis epidemic which hits tens of thousands of people. The geographical zone stretching from Senegal to Ethiopia is known as the “meningitis belt”. For many years the region has been under the scrutiny of scientists aiming to unravel the ...

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Towards domestication of the largest fish in the Amazon

Scientific newssheets

Marine and halieutic biodiversity - Peru, Brazil, Colombia

October 2008

The Amazon and its tributaries are home to almost one tenth of the world’s freshwater fish biodiversity, 2500 species being recorded. The giant fish Arapaima gigas is one of the most emblematic of these. However, this graceful predator is a victim of overfishing, and is now on the IUCN Red List ...

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Coral bleaching disturbs the structure of fish communities

Scientific newssheets

Marine and halieutic biodiversity, Ocean, climate, impacts - Mauritius, Kenya, Reunion, Maldives, Seychelles, Tanzania

September 2008

Research work reported on recently by an international research team1, including an IRD scientist, brought out evidence of the impact on the fish communities of a mass bleaching event resulting from the 1997-1998 El Niño climatic episode. The investigation was wide in scope, focusing on more ...

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Potential new threat for coral reefs and the health of communities in the tropics

Scientific newssheets

Health, Natural risks and vulnerability , Ocean, climate, impacts, Marine and halieutic biodiversity - New Caledonia,

July 2008

A study recently published by IRD researchers and their partners has affirmed the implication of a new type of toxic agent in otherwise Ciguatera-type outbreaks of poisoning. Investigations conducted on the New Caledonian island of Lifou, in an area where the coral reef was destroyed to ...

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