Biting flies and Trypanosoma vivax infection in three highland districts bordering lake Tana, Ethiopia
An epidemiological study was conducted to determine the prevalence of trypanosomosis in cattle, small ruminants and Equidae, and to identify biting flies; potential mechanical vectors of trypanosomes in the three districts of Bahir Dar Zuria, Dembia and Fogera, bordering lake Tana, Ethiopia. About 1...
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| description | An epidemiological study was conducted to determine the prevalence of trypanosomosis in cattle, small ruminants and Equidae, and to identify biting flies; potential mechanical vectors of trypanosomes in the three districts of Bahir Dar Zuria, Dembia and Fogera, bordering lake Tana, Ethiopia. About 1509 cattle, 798 small ruminants and 749 Equidae were bled for the prevalence study using the buffy-coat method and the measurement of the hematocrit value. Sixty-six NGU and 20 monoconical traps were deployed for the fly survey. The results indicated the presence of trypanosomes in 6.1% (92/1509) of the cattle with a maximum during the late rainy season (9.6%) than the early dry season (3.6%) at Fogera district. Prevalence at the district level varied from 4% to 9.6%. Only one sheep (1/122) and one goat (1/676) were found positive for
T. vivax-like trypanosomes and none of the Equidae was positive. All the trypanosomes encountered in cattle belong to the single species of
T. vivax. The PCV was negatively associated with detection of
T. vivax (21.6% in infected versus 25.4% in non-infected cattle). A total of 55,398 biting flies were caught of which 49,353 (89.08%) belong to
Stomoxys, 4715 (8.51%) to horse flies and 1330 (2.4%) to
Chrysops species. There was no tsetse fly. Species identification has indicated the presence of
Atylotus agrestis, Chrysops streptobalia, Stomoxys calcitrans, S. nigra, S. pulla, S. pallida, S. sitiens, S. taeniata, S. uruma, Haematopota lasiops and
Hippobosca variegata. The overall apparent density was 214.7
flies/trap/day. Seasonal comparison showed higher fly catches in the late rainy season than the early dry season. This study indicated that
T. vivax infections culminate in cattle at the same time as mechanical vectors such as
Stomoxys sp. and
Atylotus agrestis. Therefore, attention towards
T. vivax infection in cattle is essential to control the impact of the disease on productivity. A further study on biting flies is recommended. |
| doi_str_mv | 10.1016/j.vetpar.2006.06.032 |
| format | Article |
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T. vivax-like trypanosomes and none of the Equidae was positive. All the trypanosomes encountered in cattle belong to the single species of
T. vivax. The PCV was negatively associated with detection of
T. vivax (21.6% in infected versus 25.4% in non-infected cattle). A total of 55,398 biting flies were caught of which 49,353 (89.08%) belong to
Stomoxys, 4715 (8.51%) to horse flies and 1330 (2.4%) to
Chrysops species. There was no tsetse fly. Species identification has indicated the presence of
Atylotus agrestis, Chrysops streptobalia, Stomoxys calcitrans, S. nigra, S. pulla, S. pallida, S. sitiens, S. taeniata, S. uruma, Haematopota lasiops and
Hippobosca variegata. The overall apparent density was 214.7
flies/trap/day. Seasonal comparison showed higher fly catches in the late rainy season than the early dry season. This study indicated that
T. vivax infections culminate in cattle at the same time as mechanical vectors such as
Stomoxys sp. and
Atylotus agrestis. Therefore, attention towards
T. vivax infection in cattle is essential to control the impact of the disease on productivity. A further study on biting flies is recommended.</description><identifier>ISSN: 0304-4017</identifier><identifier>EISSN: 1873-2550</identifier><identifier>DOI: 10.1016/j.vetpar.2006.06.032</identifier><identifier>PMID: 16890359</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Antibodies, Protozoan - blood ; Atylotus ; Biting flies ; Cattle ; Chrysops ; Diptera ; Diptera - parasitology ; disease prevalence ; epidemiological studies ; Equidae ; Ethiopia ; Ethiopia - epidemiology ; Glossina ; Goats ; Haematopota ; hematocrit ; hematophagous insects ; highlands ; Hippobosca ; Insect Bites and Stings ; insect vectors ; Insect Vectors - parasitology ; Lake Tana ; mechanical vectors ; Ruminantia ; Ruminants ; seasonal variation ; Seasons ; Seroepidemiologic Studies ; Sheep ; small ruminants ; Stomoxys ; Stomoxys calcitrans ; Trypanosoma ; Trypanosoma vivax ; Trypanosoma vivax - immunology ; trypanosomiasis ; Trypanosomiasis, African - epidemiology ; Trypanosomiasis, African - transmission ; Trypanosomiasis, African - veterinary</subject><ispartof>Veterinary parasitology, 2006-11, Vol.142 (1), p.35-46</ispartof><rights>2006 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c415t-468b1570b6922a1f00d79a201a9c5c46f1a59a0fe4f9b27082cc0f872afce4a33</citedby><cites>FETCH-LOGICAL-c415t-468b1570b6922a1f00d79a201a9c5c46f1a59a0fe4f9b27082cc0f872afce4a33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.vetpar.2006.06.032$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16890359$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sinshaw, A.</creatorcontrib><creatorcontrib>Abebe, G.</creatorcontrib><creatorcontrib>Desquesnes, M.</creatorcontrib><creatorcontrib>Yoni, W.</creatorcontrib><title>Biting flies and Trypanosoma vivax infection in three highland districts bordering lake Tana, Ethiopia</title><title>Veterinary parasitology</title><addtitle>Vet Parasitol</addtitle><description>An epidemiological study was conducted to determine the prevalence of trypanosomosis in cattle, small ruminants and Equidae, and to identify biting flies; potential mechanical vectors of trypanosomes in the three districts of Bahir Dar Zuria, Dembia and Fogera, bordering lake Tana, Ethiopia. About 1509 cattle, 798 small ruminants and 749 Equidae were bled for the prevalence study using the buffy-coat method and the measurement of the hematocrit value. Sixty-six NGU and 20 monoconical traps were deployed for the fly survey. The results indicated the presence of trypanosomes in 6.1% (92/1509) of the cattle with a maximum during the late rainy season (9.6%) than the early dry season (3.6%) at Fogera district. Prevalence at the district level varied from 4% to 9.6%. Only one sheep (1/122) and one goat (1/676) were found positive for
T. vivax-like trypanosomes and none of the Equidae was positive. All the trypanosomes encountered in cattle belong to the single species of
T. vivax. The PCV was negatively associated with detection of
T. vivax (21.6% in infected versus 25.4% in non-infected cattle). A total of 55,398 biting flies were caught of which 49,353 (89.08%) belong to
Stomoxys, 4715 (8.51%) to horse flies and 1330 (2.4%) to
Chrysops species. There was no tsetse fly. Species identification has indicated the presence of
Atylotus agrestis, Chrysops streptobalia, Stomoxys calcitrans, S. nigra, S. pulla, S. pallida, S. sitiens, S. taeniata, S. uruma, Haematopota lasiops and
Hippobosca variegata. The overall apparent density was 214.7
flies/trap/day. Seasonal comparison showed higher fly catches in the late rainy season than the early dry season. This study indicated that
T. vivax infections culminate in cattle at the same time as mechanical vectors such as
Stomoxys sp. and
Atylotus agrestis. Therefore, attention towards
T. vivax infection in cattle is essential to control the impact of the disease on productivity. A further study on biting flies is recommended.</description><subject>Animals</subject><subject>Antibodies, Protozoan - blood</subject><subject>Atylotus</subject><subject>Biting flies</subject><subject>Cattle</subject><subject>Chrysops</subject><subject>Diptera</subject><subject>Diptera - parasitology</subject><subject>disease prevalence</subject><subject>epidemiological studies</subject><subject>Equidae</subject><subject>Ethiopia</subject><subject>Ethiopia - epidemiology</subject><subject>Glossina</subject><subject>Goats</subject><subject>Haematopota</subject><subject>hematocrit</subject><subject>hematophagous insects</subject><subject>highlands</subject><subject>Hippobosca</subject><subject>Insect Bites and Stings</subject><subject>insect vectors</subject><subject>Insect Vectors - parasitology</subject><subject>Lake Tana</subject><subject>mechanical vectors</subject><subject>Ruminantia</subject><subject>Ruminants</subject><subject>seasonal variation</subject><subject>Seasons</subject><subject>Seroepidemiologic Studies</subject><subject>Sheep</subject><subject>small ruminants</subject><subject>Stomoxys</subject><subject>Stomoxys calcitrans</subject><subject>Trypanosoma</subject><subject>Trypanosoma vivax</subject><subject>Trypanosoma vivax - immunology</subject><subject>trypanosomiasis</subject><subject>Trypanosomiasis, African - epidemiology</subject><subject>Trypanosomiasis, African - transmission</subject><subject>Trypanosomiasis, African - veterinary</subject><issn>0304-4017</issn><issn>1873-2550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kE1v1DAQhi0EotvCP0DgEyeyHTvO1wUJqpYiVeqB7dmaOONdL9k42N4V_fckykrcao1kH555Z_ww9kHAWoAor_frE6URw1oClOu5cvmKrURd5ZksCnjNVpCDyhSI6oJdxrgHAAVl9ZZdiLJuIC-aFbPfXXLDltveUeQ4dHwTnkccfPQH5Cd3wr_cDZZMcn6YXjztAhHfue2un-nOxRScSZG3PnQU5qwefxPf4IBf-G3aOT86fMfeWOwjvT_fV-zp7nZzc589PP74efPtITNKFClTZd2KooK2bKREYQG6qkEJAhtTGFVagUWDYEnZppUV1NIYsHUl0RpSmOdX7POSOwb_50gx6YOLhvppV_LHqEVTQlVXagLVAprgYwxk9RjcAcOzFqBnv3qvF7969qvnyuXU9vGcf2wP1P1vOgudgE8LYNFr3AYX9dOv6QM5iOmocp78dSFo8nByFHQ0jgZDnQuTZt159_IO_wA5sZgd</recordid><startdate>20061130</startdate><enddate>20061130</enddate><creator>Sinshaw, A.</creator><creator>Abebe, G.</creator><creator>Desquesnes, M.</creator><creator>Yoni, W.</creator><general>Elsevier B.V</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SS</scope><scope>M7N</scope></search><sort><creationdate>20061130</creationdate><title>Biting flies and Trypanosoma vivax infection in three highland districts bordering lake Tana, Ethiopia</title><author>Sinshaw, A. ; Abebe, G. ; Desquesnes, M. ; Yoni, W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c415t-468b1570b6922a1f00d79a201a9c5c46f1a59a0fe4f9b27082cc0f872afce4a33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Animals</topic><topic>Antibodies, Protozoan - blood</topic><topic>Atylotus</topic><topic>Biting flies</topic><topic>Cattle</topic><topic>Chrysops</topic><topic>Diptera</topic><topic>Diptera - parasitology</topic><topic>disease prevalence</topic><topic>epidemiological studies</topic><topic>Equidae</topic><topic>Ethiopia</topic><topic>Ethiopia - epidemiology</topic><topic>Glossina</topic><topic>Goats</topic><topic>Haematopota</topic><topic>hematocrit</topic><topic>hematophagous insects</topic><topic>highlands</topic><topic>Hippobosca</topic><topic>Insect Bites and Stings</topic><topic>insect vectors</topic><topic>Insect Vectors - parasitology</topic><topic>Lake Tana</topic><topic>mechanical vectors</topic><topic>Ruminantia</topic><topic>Ruminants</topic><topic>seasonal variation</topic><topic>Seasons</topic><topic>Seroepidemiologic Studies</topic><topic>Sheep</topic><topic>small ruminants</topic><topic>Stomoxys</topic><topic>Stomoxys calcitrans</topic><topic>Trypanosoma</topic><topic>Trypanosoma vivax</topic><topic>Trypanosoma vivax - immunology</topic><topic>trypanosomiasis</topic><topic>Trypanosomiasis, African - epidemiology</topic><topic>Trypanosomiasis, African - transmission</topic><topic>Trypanosomiasis, African - veterinary</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sinshaw, A.</creatorcontrib><creatorcontrib>Abebe, G.</creatorcontrib><creatorcontrib>Desquesnes, M.</creatorcontrib><creatorcontrib>Yoni, W.</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><jtitle>Veterinary parasitology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sinshaw, A.</au><au>Abebe, G.</au><au>Desquesnes, M.</au><au>Yoni, W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biting flies and Trypanosoma vivax infection in three highland districts bordering lake Tana, Ethiopia</atitle><jtitle>Veterinary parasitology</jtitle><addtitle>Vet Parasitol</addtitle><date>2006-11-30</date><risdate>2006</risdate><volume>142</volume><issue>1</issue><spage>35</spage><epage>46</epage><pages>35-46</pages><issn>0304-4017</issn><eissn>1873-2550</eissn><abstract>An epidemiological study was conducted to determine the prevalence of trypanosomosis in cattle, small ruminants and Equidae, and to identify biting flies; potential mechanical vectors of trypanosomes in the three districts of Bahir Dar Zuria, Dembia and Fogera, bordering lake Tana, Ethiopia. About 1509 cattle, 798 small ruminants and 749 Equidae were bled for the prevalence study using the buffy-coat method and the measurement of the hematocrit value. Sixty-six NGU and 20 monoconical traps were deployed for the fly survey. The results indicated the presence of trypanosomes in 6.1% (92/1509) of the cattle with a maximum during the late rainy season (9.6%) than the early dry season (3.6%) at Fogera district. Prevalence at the district level varied from 4% to 9.6%. Only one sheep (1/122) and one goat (1/676) were found positive for
T. vivax-like trypanosomes and none of the Equidae was positive. All the trypanosomes encountered in cattle belong to the single species of
T. vivax. The PCV was negatively associated with detection of
T. vivax (21.6% in infected versus 25.4% in non-infected cattle). A total of 55,398 biting flies were caught of which 49,353 (89.08%) belong to
Stomoxys, 4715 (8.51%) to horse flies and 1330 (2.4%) to
Chrysops species. There was no tsetse fly. Species identification has indicated the presence of
Atylotus agrestis, Chrysops streptobalia, Stomoxys calcitrans, S. nigra, S. pulla, S. pallida, S. sitiens, S. taeniata, S. uruma, Haematopota lasiops and
Hippobosca variegata. The overall apparent density was 214.7
flies/trap/day. Seasonal comparison showed higher fly catches in the late rainy season than the early dry season. This study indicated that
T. vivax infections culminate in cattle at the same time as mechanical vectors such as
Stomoxys sp. and
Atylotus agrestis. Therefore, attention towards
T. vivax infection in cattle is essential to control the impact of the disease on productivity. A further study on biting flies is recommended.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>16890359</pmid><doi>10.1016/j.vetpar.2006.06.032</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Veterinary parasitology, 2006-11, Vol.142 (1), p.35-46 |
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| source | MEDLINE; ScienceDirect Journals (5 years ago - present) |
| subjects | Animals Antibodies, Protozoan - blood Atylotus Biting flies Cattle Chrysops Diptera Diptera - parasitology disease prevalence epidemiological studies Equidae Ethiopia Ethiopia - epidemiology Glossina Goats Haematopota hematocrit hematophagous insects highlands Hippobosca Insect Bites and Stings insect vectors Insect Vectors - parasitology Lake Tana mechanical vectors Ruminantia Ruminants seasonal variation Seasons Seroepidemiologic Studies Sheep small ruminants Stomoxys Stomoxys calcitrans Trypanosoma Trypanosoma vivax Trypanosoma vivax - immunology trypanosomiasis Trypanosomiasis, African - epidemiology Trypanosomiasis, African - transmission Trypanosomiasis, African - veterinary |
| title | Biting flies and Trypanosoma vivax infection in three highland districts bordering lake Tana, Ethiopia |
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