Bacillus spp. toxicity against Haemonchus contortus larvae in sheep fecal cultures
[Display omitted] ► Bacillus strains were screened for activity against the larval stages of Haemonchus contortus. ► Larvicidal effects occur by the vegetative and spore–crystal stages. ► Bacillus can be used as alternative biocontrol for important veterinary nematode. The gastrointestinal nematode...
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| Veröffentlicht in: | Experimental parasitology 2012-10, Vol.132 (2), p.103-108 |
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| creator | Sinott, M.C. Cunha Filho, N.A. Castro, L.L.D. Lorenzon, L.B. Pinto, N.B. Capella, G.A. Leite, F.P.L. |
| description | [Display omitted]
► Bacillus strains were screened for activity against the larval stages of Haemonchus contortus. ► Larvicidal effects occur by the vegetative and spore–crystal stages. ► Bacillus can be used as alternative biocontrol for important veterinary nematode.
The gastrointestinal nematode Haemonchus contortus is a major productivity constraint in sheep. In this study, the nematicidal effects of Bacillus circulans, Bacillus cereus, Bacillus thuringiensis var. israelensis, Bt. var. osvaldocruzi, Bt. var. morrisoni, and Bt. var. kurstaki were assessed in free-living larval stages of H. contortus. A spore–crystal suspension containing approximately 2×108UFC/mL of each strain was added to sheep feces that were naturally infected with H. contortus eggs, and the presence of larvae was then evaluated. We observed a significant (p>0.05) reduction in larval development when using B. circulans, B. thuringiensis var. israelensis, Bt. var. osvaldocruzi and Bt. var. kurstaki, and these effects were proportional with the amount of bacteria added to the feces. However, no effect was observed when Bt. var. morrisoni or B. cereus was added. These observations suggest that these bacteria might be effective as nematicides and may allow for the development of integrated biological control of zooparasitic nematodes. |
| doi_str_mv | 10.1016/j.exppara.2012.05.015 |
| format | Article |
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► Bacillus strains were screened for activity against the larval stages of Haemonchus contortus. ► Larvicidal effects occur by the vegetative and spore–crystal stages. ► Bacillus can be used as alternative biocontrol for important veterinary nematode.
The gastrointestinal nematode Haemonchus contortus is a major productivity constraint in sheep. In this study, the nematicidal effects of Bacillus circulans, Bacillus cereus, Bacillus thuringiensis var. israelensis, Bt. var. osvaldocruzi, Bt. var. morrisoni, and Bt. var. kurstaki were assessed in free-living larval stages of H. contortus. A spore–crystal suspension containing approximately 2×108UFC/mL of each strain was added to sheep feces that were naturally infected with H. contortus eggs, and the presence of larvae was then evaluated. We observed a significant (p>0.05) reduction in larval development when using B. circulans, B. thuringiensis var. israelensis, Bt. var. osvaldocruzi and Bt. var. kurstaki, and these effects were proportional with the amount of bacteria added to the feces. However, no effect was observed when Bt. var. morrisoni or B. cereus was added. These observations suggest that these bacteria might be effective as nematicides and may allow for the development of integrated biological control of zooparasitic nematodes.</description><identifier>ISSN: 0014-4894</identifier><identifier>EISSN: 1090-2449</identifier><identifier>DOI: 10.1016/j.exppara.2012.05.015</identifier><identifier>PMID: 22728159</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Animals ; Bacillus ; Bacillus - classification ; Bacillus - physiology ; Bacillus cereus ; Bacillus circulans ; Bacillus spp ; Bacterial Proteins - analysis ; Bacterial Toxins - analysis ; Biocontrol ; Electrophoresis, Polyacrylamide Gel - veterinary ; Feces - microbiology ; Feces - parasitology ; Haemonchiasis - parasitology ; Haemonchiasis - prevention & control ; Haemonchiasis - veterinary ; Haemonchus - microbiology ; Haemonchus contortus ; Larva - microbiology ; Male ; Nematoda ; Nematodes ; Parasite Egg Count - veterinary ; Pest Control, Biological - methods ; Sheep ; Sheep Diseases - parasitology ; Sheep Diseases - prevention & control</subject><ispartof>Experimental parasitology, 2012-10, Vol.132 (2), p.103-108</ispartof><rights>2012 Elsevier Inc.</rights><rights>Copyright © 2012 Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c398t-b47ca9cff40c81cfdc882d52ae3a136a8f27f179779879893b358b6ebdb86e0a3</citedby><cites>FETCH-LOGICAL-c398t-b47ca9cff40c81cfdc882d52ae3a136a8f27f179779879893b358b6ebdb86e0a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.exppara.2012.05.015$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22728159$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sinott, M.C.</creatorcontrib><creatorcontrib>Cunha Filho, N.A.</creatorcontrib><creatorcontrib>Castro, L.L.D.</creatorcontrib><creatorcontrib>Lorenzon, L.B.</creatorcontrib><creatorcontrib>Pinto, N.B.</creatorcontrib><creatorcontrib>Capella, G.A.</creatorcontrib><creatorcontrib>Leite, F.P.L.</creatorcontrib><title>Bacillus spp. toxicity against Haemonchus contortus larvae in sheep fecal cultures</title><title>Experimental parasitology</title><addtitle>Exp Parasitol</addtitle><description>[Display omitted]
► Bacillus strains were screened for activity against the larval stages of Haemonchus contortus. ► Larvicidal effects occur by the vegetative and spore–crystal stages. ► Bacillus can be used as alternative biocontrol for important veterinary nematode.
The gastrointestinal nematode Haemonchus contortus is a major productivity constraint in sheep. In this study, the nematicidal effects of Bacillus circulans, Bacillus cereus, Bacillus thuringiensis var. israelensis, Bt. var. osvaldocruzi, Bt. var. morrisoni, and Bt. var. kurstaki were assessed in free-living larval stages of H. contortus. A spore–crystal suspension containing approximately 2×108UFC/mL of each strain was added to sheep feces that were naturally infected with H. contortus eggs, and the presence of larvae was then evaluated. We observed a significant (p>0.05) reduction in larval development when using B. circulans, B. thuringiensis var. israelensis, Bt. var. osvaldocruzi and Bt. var. kurstaki, and these effects were proportional with the amount of bacteria added to the feces. However, no effect was observed when Bt. var. morrisoni or B. cereus was added. These observations suggest that these bacteria might be effective as nematicides and may allow for the development of integrated biological control of zooparasitic nematodes.</description><subject>Animals</subject><subject>Bacillus</subject><subject>Bacillus - classification</subject><subject>Bacillus - physiology</subject><subject>Bacillus cereus</subject><subject>Bacillus circulans</subject><subject>Bacillus spp</subject><subject>Bacterial Proteins - analysis</subject><subject>Bacterial Toxins - analysis</subject><subject>Biocontrol</subject><subject>Electrophoresis, Polyacrylamide Gel - veterinary</subject><subject>Feces - microbiology</subject><subject>Feces - parasitology</subject><subject>Haemonchiasis - parasitology</subject><subject>Haemonchiasis - prevention & control</subject><subject>Haemonchiasis - veterinary</subject><subject>Haemonchus - microbiology</subject><subject>Haemonchus contortus</subject><subject>Larva - microbiology</subject><subject>Male</subject><subject>Nematoda</subject><subject>Nematodes</subject><subject>Parasite Egg Count - veterinary</subject><subject>Pest Control, Biological - methods</subject><subject>Sheep</subject><subject>Sheep Diseases - parasitology</subject><subject>Sheep Diseases - prevention & control</subject><issn>0014-4894</issn><issn>1090-2449</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkE1LxDAQhoMoun78BKVHL61JmrbJSVT8AkEQPYfpdKpZum1NUtF_b2VXr8LAzOF5Z5iHsWPBM8FFebbM6HMcwUMmuZAZLzIuii22ENzwVCplttmCc6FSpY3aY_shLDnnWki1y_akrKQWhVmwp0tA13VTSMI4ZkkcPh26-JXAK7g-xOQOaDX0-DYDOPRx8HGeOvAfQInrk_BGNCYtIXQJTl2cPIVDttNCF-ho0w_Yy83189Vd-vB4e3918ZBibnRMa1UhGGxbxVELbBvUWjaFBMpB5CXoVlatqExVGT2Xyeu80HVJdVPrkjjkB-x0vXf0w_tEIdqVC0hdBz0NU7BCmVLrvDRiRos1in4IwVNrR-9W4L-s4PZHp13ajU77o9Pyws4659zJ5sRUr6j5S_36m4HzNUDzox-OvA3oqEdqnCeMthncPye-AXyvikU</recordid><startdate>201210</startdate><enddate>201210</enddate><creator>Sinott, M.C.</creator><creator>Cunha Filho, N.A.</creator><creator>Castro, L.L.D.</creator><creator>Lorenzon, L.B.</creator><creator>Pinto, N.B.</creator><creator>Capella, G.A.</creator><creator>Leite, F.P.L.</creator><general>Elsevier Inc</general><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>7QL</scope><scope>7U7</scope><scope>C1K</scope></search><sort><creationdate>201210</creationdate><title>Bacillus spp. toxicity against Haemonchus contortus larvae in sheep fecal cultures</title><author>Sinott, M.C. ; Cunha Filho, N.A. ; Castro, L.L.D. ; Lorenzon, L.B. ; Pinto, N.B. ; Capella, G.A. ; Leite, F.P.L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-b47ca9cff40c81cfdc882d52ae3a136a8f27f179779879893b358b6ebdb86e0a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Animals</topic><topic>Bacillus</topic><topic>Bacillus - classification</topic><topic>Bacillus - physiology</topic><topic>Bacillus cereus</topic><topic>Bacillus circulans</topic><topic>Bacillus spp</topic><topic>Bacterial Proteins - analysis</topic><topic>Bacterial Toxins - analysis</topic><topic>Biocontrol</topic><topic>Electrophoresis, Polyacrylamide Gel - veterinary</topic><topic>Feces - microbiology</topic><topic>Feces - parasitology</topic><topic>Haemonchiasis - parasitology</topic><topic>Haemonchiasis - prevention & control</topic><topic>Haemonchiasis - veterinary</topic><topic>Haemonchus - microbiology</topic><topic>Haemonchus contortus</topic><topic>Larva - microbiology</topic><topic>Male</topic><topic>Nematoda</topic><topic>Nematodes</topic><topic>Parasite Egg Count - veterinary</topic><topic>Pest Control, Biological - methods</topic><topic>Sheep</topic><topic>Sheep Diseases - parasitology</topic><topic>Sheep Diseases - prevention & control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sinott, M.C.</creatorcontrib><creatorcontrib>Cunha Filho, N.A.</creatorcontrib><creatorcontrib>Castro, L.L.D.</creatorcontrib><creatorcontrib>Lorenzon, L.B.</creatorcontrib><creatorcontrib>Pinto, N.B.</creatorcontrib><creatorcontrib>Capella, G.A.</creatorcontrib><creatorcontrib>Leite, F.P.L.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Experimental parasitology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sinott, M.C.</au><au>Cunha Filho, N.A.</au><au>Castro, L.L.D.</au><au>Lorenzon, L.B.</au><au>Pinto, N.B.</au><au>Capella, G.A.</au><au>Leite, F.P.L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Bacillus spp. toxicity against Haemonchus contortus larvae in sheep fecal cultures</atitle><jtitle>Experimental parasitology</jtitle><addtitle>Exp Parasitol</addtitle><date>2012-10</date><risdate>2012</risdate><volume>132</volume><issue>2</issue><spage>103</spage><epage>108</epage><pages>103-108</pages><issn>0014-4894</issn><eissn>1090-2449</eissn><abstract>[Display omitted]
► Bacillus strains were screened for activity against the larval stages of Haemonchus contortus. ► Larvicidal effects occur by the vegetative and spore–crystal stages. ► Bacillus can be used as alternative biocontrol for important veterinary nematode.
The gastrointestinal nematode Haemonchus contortus is a major productivity constraint in sheep. In this study, the nematicidal effects of Bacillus circulans, Bacillus cereus, Bacillus thuringiensis var. israelensis, Bt. var. osvaldocruzi, Bt. var. morrisoni, and Bt. var. kurstaki were assessed in free-living larval stages of H. contortus. A spore–crystal suspension containing approximately 2×108UFC/mL of each strain was added to sheep feces that were naturally infected with H. contortus eggs, and the presence of larvae was then evaluated. We observed a significant (p>0.05) reduction in larval development when using B. circulans, B. thuringiensis var. israelensis, Bt. var. osvaldocruzi and Bt. var. kurstaki, and these effects were proportional with the amount of bacteria added to the feces. However, no effect was observed when Bt. var. morrisoni or B. cereus was added. These observations suggest that these bacteria might be effective as nematicides and may allow for the development of integrated biological control of zooparasitic nematodes.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>22728159</pmid><doi>10.1016/j.exppara.2012.05.015</doi><tpages>6</tpages></addata></record> |
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| subjects | Animals Bacillus Bacillus - classification Bacillus - physiology Bacillus cereus Bacillus circulans Bacillus spp Bacterial Proteins - analysis Bacterial Toxins - analysis Biocontrol Electrophoresis, Polyacrylamide Gel - veterinary Feces - microbiology Feces - parasitology Haemonchiasis - parasitology Haemonchiasis - prevention & control Haemonchiasis - veterinary Haemonchus - microbiology Haemonchus contortus Larva - microbiology Male Nematoda Nematodes Parasite Egg Count - veterinary Pest Control, Biological - methods Sheep Sheep Diseases - parasitology Sheep Diseases - prevention & control |
| title | Bacillus spp. toxicity against Haemonchus contortus larvae in sheep fecal cultures |
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