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- Title
Soil Quality Influences Efficacy of Melia azedarach (Sapindales: Meliaceae), Fruit Extracts Against Rhipicephalus (Boophilus) microplus (Acari: Ixodidae).
- Authors
DE SOUSA, LORENA A. D.; DA COSTA, DEOMAR P.; FERRI, PEDRO H.; SHOWLER, ALLAN T.; BORGES, LÍGIA M. F.
- Abstract
Hexane extract of chinaberry, Melia azedarach L., unripe fruits obtained from different municipalities of Goiás State, Brazil, were evaluated on the southern cattle tick, Rhipicephalus (Boophilus) microplus (Canestrini), engorged females. Hexanic extracts were assayed in decreasing concentrations from 0.25 to 0.0156% to determine effects on egg production and hatching. Efficacy on engorged females decreased as a result of the extracts from Goiânia (100%), Professor Jamil (97.5 ± 3.0%), Pirenópolis (95.1 ± 2.4%), Morrinhos (86.8 ± 9.4%), Caturaí (41.8 ± 29.3%), and Bela Vista de Goiás (17.1 ± 0.9%) municipalities. Canonical redundancy analysis indicated that the extract bioactivity was positively correlated with soil Ca2+, Mg2+, and P and negatively correlated with silt, K+, potential acidity, and organic matter. This study demonstrates that M. azedarach hexanic extract can dramatically reduce R. (B.) microplus reproductive capacity and that efficacy is strongly influenced by differences in soil constituents between collection sites.
- Subjects
SOIL quality; SAPINDALES; MELIACEAE; RHIPICEPHALUS; BOOPHILUS microplus; MITES; IXODIDAE; AGRICULTURAL egg production
- Publication
Annals of the Entomological Society of America, 2014, Vol 107, Issue 2, p484
- ISSN
0013-8746
- Publication type
Article
- DOI
10.1603/AN13167