Putative filariosis outbreak in white and black rhinoceros at Meru National Park in Kenya

Particle and Fibre Toxicology

Samer Alasaad⁴  Luca Rossi¹  Ramón C Soriguer³  Isaac Lekolool²  Edward Kariuki²  Ephantus Ndambiri²  David Ndeere²  Vincent Obanda²  Linus Kariuki²  Francis Gakuya²  Moses Otiende²  Matthew Mutinda² 

[1] Dipartimento di Produzioni Animali, Epidemiologia ed Ecologia, Università degli Studi di Torino, Via Leonardo da Vinci 44, Grugliasco, I-10095, Italy;Department of Veterinary and Capture Services, Kenya Wildlife Service, Nairobi, Kenya;Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (CSIC), Avda. Américo Vespucio s/n 41092, Sevilla, Spain;Institute of Evolutionary Biology and Environmental Studies (IEU), University of Zürich, Winterthurerstrasse 190, Zürich, 8057, Switzerland

关键词: Threatened species;    Treatment;    Ceratotherium simum;    Diceros bicornis;    Stephanofilaria dinniki;    Filariosis;   

Others  :  1229992
DOI  :  10.1186/1756-3305-5-206

 received in 2012-06-25, accepted in 2012-09-16,  发布年份 2012

【 摘 要 】

Background

Habitat and food supply loss and disruption, together with man’s pursuit of the animal’s unique horn pose significant threats to the charismatic rhinoceros. Filarial worms have been thought to cause cutaneous lesions in black rhinoceros (Diceros bicornis) in Kenya and South Africa, but never in white rhinoceros (Ceratotherium simum) in the wild, despite the fact that the two species live often in close proximity. Stephanofilaria dinniki has been implicated in the past as the causal agents for such lesions.

Findings

In this paper we report a putative filariosis outbreak in both black and white rhinos at Meru National Park in Kenya. Four black and five white rhinos were affected by various degrees of filarioid-like lesions, while apparently all sympatric wild and domestic animals were filarial worm-free. Affected rhinos were captured and successfully treated. Comparison between the epidemiological aspects of white and black rhinoceros filariosis, and the possible relations between this outbreak and annual seasons, the presence of oxpeckers and other host species are discussed.

Conclusions

Our study highlights (i) that filarial infection is not restricted to black rhinos, but it affects both rhinoceros species, and (ii) the importance of the earlier detection and immediate treatment (capture-treat and release) of filarioid infections, which is of pivotal interest for wildlife conservation, and especially the endangered and isolated white and black rhinoceros populations.

【 授权许可】

   
2012 Mutinda et al.; licensee BioMed Central Ltd.

【 图 表 】

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