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Seasonal abundance of livestock‐associated Culicoides species in northeastern B razil
Author(s) -
CARVALHO L. P. C.,
SILVA F. S.
Publication year - 2014
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/mve.12043
Subject(s) - culicoides , biology , ceratopogonidae , abundance (ecology) , livestock , veterinary medicine , vector (molecular biology) , zoology , larva , ecology , medicine , biochemistry , gene , recombinant dna
Culicoides biting midges ( D iptera: C eratopogonidae) are of great medical and veterinary importance because the haematophagous females of some species can transmit diseases to humans and animals. In order to determine the presence and seasonal abundance of the bluetongue virus ( BTV ) vector Culicoides insignis Lutz at domestic animal sheds in northeastern B razil, insects were collected once a month between J anuary and D ecember 2010. Light traps were set from 18.00 to 06.00 hours at a pigsty, chicken coop and bovine corral. Culicoides insignis accounted for 81% of the 22 316 specimens collected. Other well‐represented species were: Culicoides paucienfuscatus Barbosa (3246 individuals), Culicoides diabolicus Hoffman (308), Culicoides leopoldoi Ortiz (224) and Culicoides duartei Tavares and Luna Dias (221). The remainder accounted for 4% of the total sample. Culicoides insignis occurred mostly at the cattle corral, 98.2% in the rainy season. This study confirms the presence and close association of C. insignis with cattle in M aranhão state, northeastern B razil and emphasizes the risk of bluetongue infections spreading in the area.