Population dynamics of Libyostrongylus dentatus and L. douglassii of ostriches raised in the Northern Rio de Janeiro State, Brazil

Rosane Teixeira Lelis; Josiana Gomes de Andrade; Ricardo Augusto Mendonça Vieira; Renato Augusto DaMatta; Clóvis de Paula Santos

doi:10.1016/j.vetpar.2013.11.022

Population dynamics of Libyostrongylus dentatus and L. douglassii of ostriches raised in the Northern Rio de Janeiro State, Brazil

Rosane Teixeira Lelis, Josiana Gomes de Andrade, Ricardo Augusto Mendonça Vieira, Renato Augusto DaMatta, Clóvis de Paula Santos^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

4 Citations (Scopus)

Abstract

Libyostrongylus genus contains three species of gastrointestinal nematodes that infect ostriches. Of these, only Libyostrongylus douglassii has been implicated in diseases and lower productivity. A morphological diagnosis method allowing the discrimination of infective larvae of L. douglassii and Libyostrongylus dentatus and the evaluation of eggs per gram of feces (EPG) was used to determine the population dynamics of both species from two ostrich farms located in the northern region of the state of Rio de Janeiro, Brazil. The presence of these nematodes was monitored every 15 days for two years. The average EPG was 4631 and 587 on farms 1 and 2, respectively. Overall, the highest values of EPG were associated with the rainy season on both farms. However, only on farm 1 the rainy season correlated statistically with EPG. Both species of Libyostrongylus occurred on both farms with a higher predominance (86%) of L. douglassii on farm 1, whereas the distribution of infection on farm 2 was more heterogeneous with a slight predominance of L. douglassii. The infection and the prevalence of these species may vary considerably according to the farm facilities, management adopted, and season.

Original language	English
Journal	Veterinary Parasitology
Volume	200
Issue number	1-2
Pages (from-to)	147-152
Number of pages	6
ISSN	0304-4017
DOIs	https://doi.org/10.1016/j.vetpar.2013.11.022
Publication status	Published - 24 Feb 2014
Externally published	Yes

Bibliographical note

Funding Information:
We would like to thank Andrèa Carvalho César for proof reading the manuscript and owners and workers of both farms for helping with this work. This study was funded by the Brazilian fostering agencies Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Fundação Carlos Chagas Filho do Rio de Janeiro (FAPERJ) . We also thank to Universidade Federal Rural do Rio de Janeiro for allowing the use of the meteorological data recorded on Campus Dr. Leonel Miranda facilities.

Keywords

Epidemiology
Libyostrongylus dentatus
Libyostrongylus douglassii
Ostriches
Population dynamics

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Population dynamics of Libyostrongylus dentatus and L. douglassii of ostriches raised in the Northern Rio de Janeiro State, Brazil. / Lelis, Rosane Teixeira; de Andrade, Josiana Gomes; Vieira, Ricardo Augusto Mendonça et al.
In: Veterinary Parasitology, Vol. 200, No. 1-2, 24.02.2014, p. 147-152.

Research output: Contribution to journal › Journal article › Research › peer-review

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abstract = "Libyostrongylus genus contains three species of gastrointestinal nematodes that infect ostriches. Of these, only Libyostrongylus douglassii has been implicated in diseases and lower productivity. A morphological diagnosis method allowing the discrimination of infective larvae of L. douglassii and Libyostrongylus dentatus and the evaluation of eggs per gram of feces (EPG) was used to determine the population dynamics of both species from two ostrich farms located in the northern region of the state of Rio de Janeiro, Brazil. The presence of these nematodes was monitored every 15 days for two years. The average EPG was 4631 and 587 on farms 1 and 2, respectively. Overall, the highest values of EPG were associated with the rainy season on both farms. However, only on farm 1 the rainy season correlated statistically with EPG. Both species of Libyostrongylus occurred on both farms with a higher predominance (86%) of L. douglassii on farm 1, whereas the distribution of infection on farm 2 was more heterogeneous with a slight predominance of L. douglassii. The infection and the prevalence of these species may vary considerably according to the farm facilities, management adopted, and season.",

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note = "Funding Information: We would like to thank Andr{\`e}a Carvalho C{\'e}sar for proof reading the manuscript and owners and workers of both farms for helping with this work. This study was funded by the Brazilian fostering agencies Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico (CNPq) and Funda{\c c}{\~a}o Carlos Chagas Filho do Rio de Janeiro (FAPERJ) . We also thank to Universidade Federal Rural do Rio de Janeiro for allowing the use of the meteorological data recorded on Campus Dr. Leonel Miranda facilities.",

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AU - DaMatta, Renato Augusto

AU - Santos, Clóvis de Paula

N1 - Funding Information: We would like to thank Andrèa Carvalho César for proof reading the manuscript and owners and workers of both farms for helping with this work. This study was funded by the Brazilian fostering agencies Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Fundação Carlos Chagas Filho do Rio de Janeiro (FAPERJ) . We also thank to Universidade Federal Rural do Rio de Janeiro for allowing the use of the meteorological data recorded on Campus Dr. Leonel Miranda facilities.

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AB - Libyostrongylus genus contains three species of gastrointestinal nematodes that infect ostriches. Of these, only Libyostrongylus douglassii has been implicated in diseases and lower productivity. A morphological diagnosis method allowing the discrimination of infective larvae of L. douglassii and Libyostrongylus dentatus and the evaluation of eggs per gram of feces (EPG) was used to determine the population dynamics of both species from two ostrich farms located in the northern region of the state of Rio de Janeiro, Brazil. The presence of these nematodes was monitored every 15 days for two years. The average EPG was 4631 and 587 on farms 1 and 2, respectively. Overall, the highest values of EPG were associated with the rainy season on both farms. However, only on farm 1 the rainy season correlated statistically with EPG. Both species of Libyostrongylus occurred on both farms with a higher predominance (86%) of L. douglassii on farm 1, whereas the distribution of infection on farm 2 was more heterogeneous with a slight predominance of L. douglassii. The infection and the prevalence of these species may vary considerably according to the farm facilities, management adopted, and season.

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