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The parasitoid Gyranusoidea tebygi Noyes was released in West Africa against the mango mealybug, Rastrococcus invadens Williams, a pest that invaded Africa in the early 1980s. The ability of G. tebygi to control the mango mealybug was assessed in mango trees using paired sleeve cages. In sleeve c...


Boavida, C.Neuenschwander, P.Herren, H.[Experimental assessment of the impact of the introduced parasitoid Gyranusoidea tebygi Noyes on the mango mealbug Rastrococcus invadens Williams, by physical exclusion]Experimental assessment of the impact of the introduced parasitoid Gyranusoidea tebygi Noyes on the mango mealbug Rastrococcus invadens Williams, by physical exclusion

Dung counts have been widely used to estimate duiker abundance and densities in tropical African forests. However, one of the major limitations of this method is that species’ identification of dung based on morphological characteristics is extremely difficult in most cases. Some authors made the...


Vliet, N. vanZundel, SMiguel, C.Taberlet, PNasi, Robert[Distinguishing dung from blue, red and yellow-backed duikers through noninvasive genetic techniques]Distinguishing dung from blue, red and yellow-backed duikers through noninvasive genetic techniques

We analysed seasonality of dung decay time and the influence of rainfall, leaf fall, beetle attack and moisture on dung decay. Our study was carried out at the Ipassa Reserve, north-east Gabon. We compared the seasonality of dung decay with the seasonality of dung beetle abundance and guild struc...


Vliet, N. vanNasi, RobertLumaret, J.P.[Factors influencing duiker dung decay in north-east Gabon: are dung beetles hiding duikers?]Factors influencing duiker dung decay in north-east Gabon: are dung beetles hiding duikers?

Estimating the potential land resources suitable for irrigation and evaluating the possible impact of climate change on land suitability is essential for planning a sustainable agricultural system. This study applied a GIS-based Multi-Criteria Evaluation (MCE) technique to evaluate the suitabilit...


Worqlul, A.W.Dile, Y.T.Jeong, J.Adimassu, ZenebeLefore, NicoleGerik, T.Srinivasan, R.Clarke, N.[Effect of climate change on land suitability for surface irrigation and irrigation potential of the shallow groundwater in Ghana]Effect of climate change on land suitability for surface irrigation and irrigation potential of the shallow groundwater in Ghana

Through reconciling census totals with population structure, annual survival rates were estimated for the juvenile, yearling and adult stages of 10 ungulate species over 14 years or longer in South Africa's Kruger National Park. During this period four species maintained high abundance levels, wh...


Owen-Smith, N.Mason, D.R.Ogutu, J.[Correlates of survival rates for 10 African ungulate populations: density, rainfall and predation]Correlates of survival rates for 10 African ungulate populations: density, rainfall and predation

The overlap of large carnivores, livestock and people can engender conflicts that often threaten the future viability of carnivore populations in the pastoral systems of Africa. A playback survey of lions Panthera leo, spotted hyenas Crocuta crocuta and black-backed jackals Canis mesomelas and a ...


Ogutu, J.Bhola, N.Reid, Robin S.[The effects of pastoralism and protection on the density and distribution of carnivores and their prey in the Mara ecosystem of Kenya]The effects of pastoralism and protection on the density and distribution of carnivores and their prey in the Mara ecosystem of Kenya

Hunting of wildlife in Central Africa is largely considered to be unsustainable. Several studies indicate that most mammal species should already have disappeared from many Central African forests but markets continue to be supplied with bushmeat, with no sign of large scale extinction of the mos...


Vliet, N. vanNasi, Robert[Why do models fail to assess properly the sustainability of duiker (Cephalophus spp.) hunting in Central Africa?]Why do models fail to assess properly the sustainability of duiker (Cephalophus spp.) hunting in Central Africa?
Rivas Ríos, Libardo[Evolución del inventario vacuno de Colombia y su interacción con los precios 1951-1980]Evolución del inventario vacuno de Colombia y su interacción con los precios 1951-1980

This paper presents a proposal description. The proposal describes analytical work by the International Livestock Research Institute and its partners on livestock and poverty reduction. It also provides some insights into the practical and potential application of the results from livestock and p...


Freeman, H.A.Minjauw, B.[Enhancing the role of livestock in poverty reduction strategies: Analytical approaches and applications. Abstract]Enhancing the role of livestock in poverty reduction strategies: Analytical approaches and applications. Abstract

The capability of Epidinocarsis lopezi (De Santis) (Hymenoptera: Encyrtidae) to control the cassava mealybug (CM) Phenacoccus manihoti Mat.-Ferr. (Homoptera: Pseudococcidae) was investigated in Nigeria using physical and chemical exclusion experiments. In two sleeve cage experiments CM population...


Neuenschwander, P.Schulthess, F.Madojemu, E.[Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti]Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti

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