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Specific IgG antibody responses in Oestrus ovis L. (Diptera: Oestridae) infected sheep: associations with intensity of infection and larval development

Angulo-Valadez, C. E. and Scala, Antonio and Grisez, Christelle and Prevot, Françoise and Bergeaud, Jean-Paul and Carta, Antonello and Cepeda-Palacios, Ramón and Ascencio Valle, Felipe de Jesús and Terefe, G. and Dorchies, Philippe and Jacquiet, Philippe (2008) Specific IgG antibody responses in Oestrus ovis L. (Diptera: Oestridae) infected sheep: associations with intensity of infection and larval development. Veterinary Parasitology, Vol. 155 (3-4), p. 257-263. ISSN 0304-4017. Article.

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DOI: 10.1016/j.vetpar.2008.05.015

Abstract

Larvae of Oestrus ovis (Diptera: Oestridae) are ubiquitous parasites of nasal and sinusal cavities of sheep and goats. According to the chronobiology of O. ovis infections in Sardinia and the seasonal pattern of the IgG response, the optimal period to investigate the relationships between O. ovis larval populations and intensity of local and systemic IgG antibody responses was mid-July in the summer season. Sarda × Lacaune ewes (n = 186), divided into three ram-families were used in the study. Systemic and local IgG responses were measured by ELISA tests using second stage larval crude extracts (L2CE) and L2 (L2SGC) and L3 (L3SGC) salivary gland contents as coating antigens. The number of larval instars, larval length of L1, L2 and L3 larvae, and larval weight of L2 and L3 larvae were individually recorded after ewe necropsy. Negative correlations among larval establishment and/or larval development on the one hand and intensity of local or systemic IgG responses on the other hand were found in two out of three studied ram-families.

Item Type:Article
ID Code:1794
Status:Published
Refereed:Yes
Uncontrolled Keywords:Oestrus ovis, salivary gland, sheep, immunoglobulin G, larval growth, genetic resistance, ELISA
Subjects:Area 07 - Scienze agrarie e veterinarie > VET/06 Parassitologia e malattie parassitarie degli animali
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > Istituto zootecnico e caseario per la Sardegna, Olmedo
001 Università di Sassari > 01 Dipartimenti > Biologia animale
Publisher:Elsevier
ISSN:0304-4017
Deposited On:18 Aug 2009 10:06

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