Sergentomyia spp.: breeding sites in vertisols and peri-domestic habitats in North West Ethiopia.
Sand flies belonging to the genus Sergentomyia Franca & Parrot, 1920, are hematophagous insects feeding mostly on reptiles and birds, but some species feed also on mammals including humans. Sergentomyia spp. frequently comprise the vast majority of sand flies trapped along with Phlebotomus spp., the vectors of mammalian leishmaniasis. Within the framework of a project on the ecology and transmission of visceral leishmaniasis in Ethiopia, putative breeding sites of phlebotomine sand flies were studied. Large horizontal sticky traps (LHSTs) covered with sand fly-proof mesh were deployed over cracked vertisol and related habitats for up to 3 nights, and emerging sand flies were collected daily. Emergence traps (ETs) were also adapted to sample other putative breeding sites including tree trunks, termite mounds, rock piles and vertical river banks. Productive breeding sites were identified in the trunks and roots systems of trees, vertisol fields, cracks and burrows in vertisol dry river banks and termite mounds. Emerging flies were also collected form a stone wall and a rock pile situated inside a village. Significantly more Sergentomyia spp. were trapped in vertisols by ETs deployed over root system than in open fields. Similarly, more sand flies emerged from cracks in the vertisol in fallow Sorghum than in fallow sesame fields. Productive breeding sites were characterized by stable micro-climatic conditions. Species composition of emerging sand flies varied with habitat, season and geographical location.
Department of Microbiology and Molecular Genetics, The Institute of Medical Research Israel-Canada, The Kuvin Center for the Study of Infectious and Tropical Diseases, The Faculty of Medicine, the Hebrew University, Hadassah Medical School, Jerusalem, Israel.
Aviad
A
Moncaz
Department of Microbiology and Molecular Genetics, The Institute of Medical Research Israel-Canada, The Kuvin Center for the Study of Infectious and Tropical Diseases, The Faculty of Medicine, the Hebrew University, Hadassah Medical School, Jerusalem, Israel.
Oscar
O
Kirstein
Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
Araya
A
Gebresellassie
Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
Wossenseged
W
Lemma
Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia.
Teshome
T
Gebre-Michael
Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia.
Meshesha
M
Balkew
Department of Microbiology, Immunology & Parasitology, College of Health Sciences, Mekele University, Mekele, Ethiopia.
Shewaye
S
Belay
Department of Microbiology, Immunology & Parasitology, Faculty of Medicine, Addis Ababa, Ethiopia.
Asrat
A
Hailu
Department of Microbiology and Molecular Genetics, The Institute of Medical Research Israel-Canada, The Kuvin Center for the Study of Infectious and Tropical Diseases, The Faculty of Medicine, the Hebrew University, Hadassah Medical School, Jerusalem, Israel. Electronic address: alonw@ekmd.huji.ac.il.
Alon
A
Warburg
D000818:Animals; D003625:Data Collection; D017753:Ecosystem; D004772:Entomology; D005002:Ethiopia; D005260:Female; D006801:Humans; D008297:Male; D011576:Psychodidae / Q000502:physiology*; D012098:Reproduction; D012987:Soil
D012987:Soil
Breeding site; Emergence trap; Ethiopia; Phlebotomine sand fly; Sergentomyia; Vertisol