Spatial analysis of the risk for canine visceral leishmaniasis in an urban area in the State of Sergipe.

Visceral Leishmaniasis is included among the neglected tropical diseases, being directly related to conditions of social vulnerability, in urban environments, dogs act as important reservoirs. The aim of the study was to evaluate the distribution of dogs, related risk factors and identify of volatile organic compounds from infected dogs. Peripheral blood samples from 72 dogs were collected for detection using the ELISA test, in addition to hair samples for analysis by GC-MS. Of the evaluated dogs, 13 (18.05%/72) were reactive for canine VL, seven in Aracaju and six in Propriá. Factors related to vegetation, age, place where the dog stays and free access to the street, were associated with a greater chance of the dog becoming infected. Fifty-three compounds were identified from ten canine hair samples, among which 2-butoxyethanol, benzaldehyde, decane, 2-phenylacetaldehyde, nonan-1-ol, 2-phenoxyethanol, nonanoic acid, 8-heptadecene and eicosane were found in seropositive dogs for leishmaniasis. The guardian's posture has been increasingly important, requiring more attention to the dog's health and actions aimed at environmental management in an attempt to reduce cases of canine VL in the state. Even though the identified VOCs have not been associated with leishmanial infection, it is of great use for understanding canine hair substances.

Achatina fulica (Gastropoda: Pulmonata): Occurrence, environmental aspects and presence of nematodes in Sergipe, Brazil / Achatina fulica (Gastropoda: Pulmonata): ocorrencia, aspectos ambientais e presença de nematódeos em Sergipe, Brasil

Abstract The objective of this study was to identify the occurrence of Achatina fulica in the Great Aracaju-SE Territory. This research was developed during the months of June 2016 to May 2017. The plots methodology was used for the monthly collections, following the collection time of 20 minutes per area. The mollusks were measured and soon afterwards the parasitological analysis of the mucus and faeces was performed. Molecular identification was performed to evaluate the possible presence of Angiostrongylus sp. We observed that the occurrence of A. fulica was more representative in urban areas, especially in vacant lots with the presence of litter and decomposing materials. In the specimens of A. fulica examined were male and female nematodes of the genus Rhabditis, in the research municipalities, except in Barra dos Coqueiros. No parasites of the genus Angiostrongylus were found in the mollusks examined. The influence of the presence of litter on the plots associated with the frequency of A. fulica was statistically significant. There was a correlation between the influence of rainfall and the frequency of A. fulica. A significant relationship between moisture and frequency and nematode positivity was identified. It was also observed that the larger the mollusk, the greater the chances of being infected by nematodes. Scientific knowledge about the biology of the A. fulica species associated with human intervention such as the maintenance of land and adequate sanitary measures may be important factors for a better control of this invasive mollusk.

Resumo O objetivo deste estudo foi verificar a ocorrência de A. fulica no território da Grande Aracaju, Sergipe, avaliando a infecção destes moluscos por nematódeos, a influência das condições climáticas e das características do ambiente. Esta pesquisa foi desenvolvida durante os meses de junho de 2016 a maio de 2017. Foi utilizada a metodologia de parcelas para as coletas mensais de 20 min por área, um total de 15 parcelas distribuídas em 5 municípios. Os moluscos foram mensurados e logo em seguida realizada a análise parasitológica do muco e fezes. Foi realizada a identificação molecular para avaliar a possível presença de Angiostrongylus sp. Observamos que a ocorrência de A. fulica foi mais representativa em áreas urbanas, sobretudo em terrenos baldios com a presença de lixo e materiais em decomposição. Nos exemplares de A. fulica examinados foram encontrados nematódeos do gênero Rhabditis, nos municípios da pesquisa, exceto em Barra dos Coqueiros. Não foram encontrados parasitos do gênero Angiostrongylus nos moluscos examinados. A influência da presença de lixo nas parcelas associado à frequência da A. fulica mostrou-se estatisticamente significativa. Houve correlação entre a influência da chuva e a frequência de A. fulica. Foi identificada uma relação significativa entre a umidade e a frequência e a positividade para nematódeos. Foi também observado que quanto maior o molusco, maiores são as chances deste apresentar nematódeos. O conhecimento científico a respeito da biologia da espécie A. fulica associado à intervenção humana como, a manutenção de terrenos e medidas sanitárias adequadas podem ser fatores importantes para um controle malacológico mais adequado para esta espécie invasora.

Anisakidae Skrjabin & Karokhin, 1945 and Raphidascarididae Hartwich, 1954 nematodes in lutjanidae (pisces: perciformes) from the Brazilian Northeast Coast / Nematodas Anisakidae Skrjabin & Karokhin, 1945 e Raphidascarididae Hartwich, 1954 em Lutjanidae (Pisces: Perciformes) do litoral nordeste brasileiro

Abstract The present study aimed at describing and evaluating the fauna of Anisakidae and Raphidacarididae nematodes of lutjanid fish (snappers) from the Brazilian northeastern coast unloaded at the city of Aracaju, capital of the State of Sergipe. A total of 186 lutjanids of 5 different species were analyzed including 69 Lutjanus analis, 51 L. vivanus , 29 Ocyurus chrysurus, 23 L. synagris, and 14 L. jocu. Nematode specimens found in the viscera of these fish were clarified with lactophenol. Illustrations of each of these specimens were prepared to help identify these samples and compose their taxonomic description and classification. At necropsy, 3,183 nematodes belonging to two families were collected from fish viscera which included the following: Anisakidae: Anisakis, Terranova , Contracaecum, and Goezia; Raphidascarididae: Raphidascaris (Ichthyascaris) and Hysterothylacium . A total of six genera of nematodes were found at postmortem examination of which adult worms of only three genera (Goezia, Raphidascaris and Hysterothylacium) were detected in the fish examined. Larvae of Terranova sp. were found only in the musculature of O. chrysurus . Most of the nematode larvae were present in the mesentery and organs of the fish necropsied. Therefore, the zoonotic potential of these nematodes cannot be ruled out. There was a significant negative correlation between the intensity of parasitism by anisakids and the total body length of O. chrysurus; the intensity of parasitism was greater in smaller and shortef fish. There was a significant positive correlation between the abundance of these parasites and the length of L. synagris; the presence of these parasites increased according to the fish's body length. To the authors' knowledge, these are the first records of Raphidascaris (Ichthyascaris ) sp. and Hysterothylacium sp. in L. vivanus , of Terranova sp. in O. chrysurus and L. jocu, and of Goezia sp. in L. analis. These novel findings add the Brazilian northeast coast and the State of Sergipe in the geographic distribution of these parasites in the country.

Resumo O objetivo deste trabalho é descrever e avaliar a fauna de Anisakidae e Raphidacarididae de peixes lutjanídeos do litoral nordeste do Brasil desembarcados na cidade de Aracaju, capital do estado de Sergipe. Foram analisados 186 lutjanídeos das espécies Lutjanus analis 69, L. vivanus 51, Ocyurus chrysurus 29, L. synagris 23 e L. jocu 14. Exemplares dos nematodas encontrados nas vísceras foram clarificados em lactofenol e ilustrados para auxiliar na identificação e compor a descrição taxonõmica. Foram coletados 3.183 nematodas das vísceras dos peixes, pertencentes a duas famílias: Anisakidae: Anisakis, Terranova, Contracaecum e Goezia; e Raphidascarididae: Raphidascaris (Ichthyascaris) e Hysterothylacium. Totalizando seis gêneros encontrados, apenas nos três últimos gêneros foram encontrados vermes em estágio adulto. Apenas em O. chrysurus foram encontradas larvas de Terranova sp. na musculatura. A maioria das larvas estava restrita ao mesentério e órgãos dos peixes, e em grande intensidade não podendo se descartar o potencial zoonótico. Observou-se uma correlação significativa negativa entre a intensidade anisakídeos e o comprimento total de O. chrysurus, onde a intensidade dos parasitas é maior em peixes de menor comprimento e uma correlação significativa positiva entre a abundância desses mesmos parasitos com o comprimento de L. synagris, onde a presença dos parasitas aumenta conforme o comprimento do peixe. Esse é o primeiro registro de Raphidascaris ( Ichthyascaris) sp. e Hysterothylacium sp. em L. vivanus ; de Terranova sp. em O. chrysurus e L. jocu e Goezia sp. em L. analis, adicionando o litoral nordeste do Brasil e o estado de Sergipe na distribuição geográfica desses parasitos.

Anisakidae Skrjabin & Karokhin, 1945 and Raphidascarididae Hartwich, 1954 nematodes in lutjanidae (pisces: perciformes) from the Brazilian Northeast Coast.

The present study aimed at describing and evaluating the fauna of Anisakidae and Raphidacarididae nematodes of lutjanid fish (snappers) from the Brazilian northeastern coast unloaded at the city of Aracaju, capital of the State of Sergipe. A total of 186 lutjanids of 5 different species were analyzed including 69 Lutjanus analis, 51 L. vivanus , 29 Ocyurus chrysurus, 23 L. synagris, and 14 L. jocu. Nematode specimens found in the viscera of these fish were clarified with lactophenol. Illustrations of each of these specimens were prepared to help identify these samples and compose their taxonomic description and classification. At necropsy, 3,183 nematodes belonging to two families were collected from fish viscera which included the following: Anisakidae: Anisakis, Terranova , Contracaecum, and Goezia; Raphidascarididae: Raphidascaris (Ichthyascaris) and Hysterothylacium . A total of six genera of nematodes were found at postmortem examination of which adult worms of only three genera (Goezia, Raphidascaris and Hysterothylacium) were detected in the fish examined. Larvae of Terranova sp. were found only in the musculature of O. chrysurus . Most of the nematode larvae were present in the mesentery and organs of the fish necropsied. Therefore, the zoonotic potential of these nematodes cannot be ruled out. There was a significant negative correlation between the intensity of parasitism by anisakids and the total body length of O. chrysurus; the intensity of parasitism was greater in smaller and shortef fish. There was a significant positive correlation between the abundance of these parasites and the length of L. synagris; the presence of these parasites increased according to the fish's body length. To the authors' knowledge, these are the first records of Raphidascaris (Ichthyascaris ) sp. and Hysterothylacium sp. in L. vivanus , of Terranova sp. in O. chrysurus and L. jocu, and of Goezia sp. in L. analis. These novel findings add the Brazilian northeast coast and the State of Sergipe in the geographic distribution of these parasites in the country.

Achatina fulica (Gastropoda: Pulmonata): Occurrence, environmental aspects and presence of nematodes in Sergipe, Brazil.

The objective of this study was to identify the occurrence of Achatina fulica in the Great Aracaju-SE Territory. This research was developed during the months of June 2016 to May 2017. The plots methodology was used for the monthly collections, following the collection time of 20 minutes per area. The mollusks were measured and soon afterwards the parasitological analysis of the mucus and faeces was performed. Molecular identification was performed to evaluate the possible presence of Angiostrongylus sp. We observed that the occurrence of A. fulica was more representative in urban areas, especially in vacant lots with the presence of litter and decomposing materials. In the specimens of A. fulica examined were male and female nematodes of the genus Rhabditis, in the research municipalities, except in Barra dos Coqueiros. No parasites of the genus Angiostrongylus were found in the mollusks examined. The influence of the presence of litter on the plots associated with the frequency of A. fulica was statistically significant. There was a correlation between the influence of rainfall and the frequency of A. fulica. A significant relationship between moisture and frequency and nematode positivity was identified. It was also observed that the larger the mollusk, the greater the chances of being infected by nematodes. Scientific knowledge about the biology of the A. fulica species associated with human intervention such as the maintenance of land and adequate sanitary measures may be important factors for a better control of this invasive mollusk.

Anisakidae Skrjabin & Karokhin, 1945 and Raphidascarididae Hartwich, 1954 nematodes in lutjanidae (pisces: perciformes) from the Brazilian Northeast Coast

Abstract The present study aimed at describing and evaluating the fauna of Anisakidae and Raphidacarididae nematodes of lutjanid fish (snappers) from the Brazilian northeastern coast unloaded at the city of Aracaju, capital of the State of Sergipe. A total of 186 lutjanids of 5 different species were analyzed including 69 Lutjanus analis, 51 L. vivanus , 29 Ocyurus chrysurus, 23 L. synagris, and 14 L. jocu. Nematode specimens found in the viscera of these fish were clarified with lactophenol. Illustrations of each of these specimens were prepared to help identify these samples and compose their taxonomic description and classification. At necropsy, 3,183 nematodes belonging to two families were collected from fish viscera which included the following: Anisakidae: Anisakis, Terranova , Contracaecum, and Goezia; Raphidascarididae: Raphidascaris (Ichthyascaris) and Hysterothylacium . A total of six genera of nematodes were found at postmortem examination of which adult worms of only three genera (Goezia, Raphidascaris and Hysterothylacium) were detected in the fish examined. Larvae of Terranova sp. were found only in the musculature of O. chrysurus . Most of the nematode larvae were present in the mesentery and organs of the fish necropsied. Therefore, the zoonotic potential of these nematodes cannot be ruled out. There was a significant negative correlation between the intensity of parasitism by anisakids and the total body length of O. chrysurus; the intensity of parasitism was greater in smaller and shortef fish. There was a significant positive correlation between the abundance of these parasites and the length of L. synagris; the presence of these parasites increased according to the fishs body length. To the authors knowledge, these are the first records of Raphidascaris (Ichthyascaris ) sp. and Hysterothylacium sp. in L. vivanus , of Terranova sp. in O. chrysurus and L. jocu, and of Goezia sp. in L. analis. These novel findings add the Brazilian northeast coast and the State of Sergipe in the geographic distribution of these parasites in the country.

Resumo O objetivo deste trabalho é descrever e avaliar a fauna de Anisakidae e Raphidacarididae de peixes lutjanídeos do litoral nordeste do Brasil desembarcados na cidade de Aracaju, capital do estado de Sergipe. Foram analisados 186 lutjanídeos das espécies Lutjanus analis 69, L. vivanus 51, Ocyurus chrysurus 29, L. synagris 23 e L. jocu 14. Exemplares dos nematodas encontrados nas vísceras foram clarificados em lactofenol e ilustrados para auxiliar na identificação e compor a descrição taxonõmica. Foram coletados 3.183 nematodas das vísceras dos peixes, pertencentes a duas famílias: Anisakidae: Anisakis, Terranova, Contracaecum e Goezia; e Raphidascarididae: Raphidascaris (Ichthyascaris) e Hysterothylacium. Totalizando seis gêneros encontrados, apenas nos três últimos gêneros foram encontrados vermes em estágio adulto. Apenas em O. chrysurus foram encontradas larvas de Terranova sp. na musculatura. A maioria das larvas estava restrita ao mesentério e órgãos dos peixes, e em grande intensidade não podendo se descartar o potencial zoonótico. Observou-se uma correlação significativa negativa entre a intensidade anisakídeos e o comprimento total de O. chrysurus, onde a intensidade dos parasitas é maior em peixes de menor comprimento e uma correlação significativa positiva entre a abundância desses mesmos parasitos com o comprimento de L. synagris, onde a presença dos parasitas aumenta conforme o comprimento do peixe. Esse é o primeiro registro de Raphidascaris ( Ichthyascaris) sp. e Hysterothylacium sp. em L. vivanus ; de Terranova sp. em O. chrysurus e L. jocu e Goezia sp. em L. analis, adicionando o litoral nordeste do Brasil e o estado de Sergipe na distribuição geográfica desses parasitos.

Achatina fulica (Gastropoda: Pulmonata): Occurrence, environmental aspects and presence of nematodes in Sergipe, Brazil

Abstract The objective of this study was to identify the occurrence of Achatina fulica in the Great Aracaju-SE Territory. This research was developed during the months of June 2016 to May 2017. The plots methodology was used for the monthly collections, following the collection time of 20 minutes per area. The mollusks were measured and soon afterwards the parasitological analysis of the mucus and faeces was performed. Molecular identification was performed to evaluate the possible presence of Angiostrongylus sp. We observed that the occurrence of A. fulica was more representative in urban areas, especially in vacant lots with the presence of litter and decomposing materials. In the specimens of A. fulica examined were male and female nematodes of the genus Rhabditis, in the research municipalities, except in Barra dos Coqueiros. No parasites of the genus Angiostrongylus were found in the mollusks examined. The influence of the presence of litter on the plots associated with the frequency of A. fulica was statistically significant. There was a correlation between the influence of rainfall and the frequency of A. fulica. A significant relationship between moisture and frequency and nematode positivity was identified. It was also observed that the larger the mollusk, the greater the chances of being infected by nematodes. Scientific knowledge about the biology of the A. fulica species associated with human intervention such as the maintenance of land and adequate sanitary measures may be important factors for a better control of this invasive mollusk.

Resumo O objetivo deste estudo foi verificar a ocorrência de A. fulica no território da Grande Aracaju, Sergipe, avaliando a infecção destes moluscos por nematódeos, a influência das condições climáticas e das características do ambiente. Esta pesquisa foi desenvolvida durante os meses de junho de 2016 a maio de 2017. Foi utilizada a metodologia de parcelas para as coletas mensais de 20 min por área, um total de 15 parcelas distribuídas em 5 municípios. Os moluscos foram mensurados e logo em seguida realizada a análise parasitológica do muco e fezes. Foi realizada a identificação molecular para avaliar a possível presença de Angiostrongylus sp. Observamos que a ocorrência de A. fulica foi mais representativa em áreas urbanas, sobretudo em terrenos baldios com a presença de lixo e materiais em decomposição. Nos exemplares de A. fulica examinados foram encontrados nematódeos do gênero Rhabditis, nos municípios da pesquisa, exceto em Barra dos Coqueiros. Não foram encontrados parasitos do gênero Angiostrongylus nos moluscos examinados. A influência da presença de lixo nas parcelas associado à frequência da A. fulica mostrou-se estatisticamente significativa. Houve correlação entre a influência da chuva e a frequência de A. fulica. Foi identificada uma relação significativa entre a umidade e a frequência e a positividade para nematódeos. Foi também observado que quanto maior o molusco, maiores são as chances deste apresentar nematódeos. O conhecimento científico a respeito da biologia da espécie A. fulica associado à intervenção humana como, a manutenção de terrenos e medidas sanitárias adequadas podem ser fatores importantes para um controle malacológico mais adequado para esta espécie invasora.

Structure of the parasite infracommunity of Sciades proops from the Japaratuba River Estuary, Sergipe, Brazil.

The catfish species Sciades proops inhabits muddy estuaries and shallow brackish lagoons, as well as freshwater. For these reasons, it is believed that this species may act as an intermediate, definitive and paratenic host in the life cycle of many parasites. From November 2010 to November 2011 and from August 2012 to July 2013, a total of 126 specimens of Sciades proops from the estuarine region of the Japaratuba River in the state of Sergipe, Brazil, were examined for parasites, of which 84.13% were infected by at least one species: Ergasilus sp. (Copepoda) (Prevalence P = 77.78%, Mean of Intensity MI = 10.08 ± 15.48, Mean Abundance MA = 14.27 ± 7.48) in the gills, Contracaecum sp. (P = 23.02%, MI = 20.59 ± 80.58, MA =39.12 ± 4.47) in the general cavity, Procamallanus sp. (P = 0.79%, MI = 1, MA = 0.01 ± 0.09), Raphidascaroides sp. (P = 2.31%, MI = 1.33 ± 0.58, MA = 0.33 ± 0.22) and Cuccullanus sp. (Nematoda) (P = 0.79%, MI = 1, MA = 0.01 ± 0.09) in the intestine, Ancyrocephalinae (Monogenea) (P = 0.79%, MI = 1, MA = 0.01 ± 0.09) in the gills, Pseudoacanthostomumpanamense (P = 1.59%, MI = 9.00 ± 8.49, MA = 0.14 ± 1.36) in the intestine, Clinostomum sp. (P = 1.59%, MI = 17.50 ± 23.33, MA = 0.29 ± 3.03) on the body surface and two unidentified metacercariae, referred to as Metacercaria 1 (P = 0.79%; IM = 1, MA = 0.01 ± 0.09) and Metacercaria 2 (Digenea) (P = 0.79%, MI = 7, MA = 0.06 ± 0.62) in the swim bladder. Ergasilus sp. was the dominant species and thus classified as core, with Contracaecum sp. as the satellite and other species as secondary species. The spatial distribution of infection with Ergasilus sp. and Contracaecum sp. showed a typical pattern of aggregate distribution. The sex of the host did not influence parasitic infections, but infection with Ergasilus sp. showed a positive and significant correlation with biometric and epidemiologic parameters, whereas infection with Contracaecum sp. was correlated only with prevalence and abundance.

Structure of the parasite infracommunity of Sciades proops from the Japaratuba River Estuary, Sergipe, Brazil / Estrutura da infracomunidade parasitária de Sciades proops (Valenciennes, 1840) (Siluriformes, Ariidae) do Estuário do Rio Japaratuba, Sergipe, Brasil

Abstract The catfish species Sciades proops inhabits muddy estuaries and shallow brackish lagoons, as well as freshwater. For these reasons, it is believed that this species may act as an intermediate, definitive and paratenic host in the life cycle of many parasites. From November 2010 to November 2011 and from August 2012 to July 2013, a total of 126 specimens of Sciades proops from the estuarine region of the Japaratuba River in the state of Sergipe, Brazil, were examined for parasites, of which 84.13% were infected by at least one species: Ergasilus sp. (Copepoda) (Prevalence P = 77.78%, Mean of Intensity MI = 10.08 ± 15.48, Mean Abundance MA = 14.27 ± 7.48) in the gills, Contracaecum sp. (P = 23.02%, MI = 20.59 ± 80.58, MA =39.12 ± 4.47) in the general cavity, Procamallanus sp. (P = 0.79%, MI = 1, MA = 0.01 ± 0.09), Raphidascaroides sp. (P = 2.31%, MI = 1.33 ± 0.58, MA = 0.33 ± 0.22) and Cuccullanus sp. (Nematoda) (P = 0.79%, MI = 1, MA = 0.01 ± 0.09) in the intestine, Ancyrocephalinae (Monogenea) (P = 0.79%, MI = 1, MA = 0.01 ± 0.09) in the gills, Pseudoacanthostomumpanamense (P = 1.59%, MI = 9.00 ± 8.49, MA = 0.14 ± 1.36) in the intestine, Clinostomum sp. (P = 1.59%, MI = 17.50 ± 23.33, MA = 0.29 ± 3.03) on the body surface and two unidentified metacercariae, referred to as Metacercaria 1 (P = 0.79%; IM = 1, MA = 0.01 ± 0.09) and Metacercaria 2 (Digenea) (P = 0.79%, MI = 7, MA = 0.06 ± 0.62) in the swim bladder. Ergasilus sp. was the dominant species and thus classified as core, with Contracaecum sp. as the satellite and other species as secondary species. The spatial distribution of infection with Ergasilus sp. and Contracaecum sp. showed a typical pattern of aggregate distribution. The sex of the host did not influence parasitic infections, but infection with Ergasilus sp. showed a positive and significant correlation with biometric and epidemiologic parameters, whereas infection with Contracaecum sp. was correlated only with prevalence and abundance.

Resumo A espécie de bagre Sciades proops habita principalmente estuários de águas rasas enlameada e lagoas salobras, ocorrendo também em águas doces. Por esses motivos acredita-se que essa espécie pode atuar como hospedeiro intermediário, definitivo e paratênico no ciclo de vida de vários parasitas. Entre novembro de 2010 a novembro de 2011 e de agosto de 2012 a julho de 2013, Um total de 126 espécimes de Sciades proops originários da região estuarina do rio Japaratuba, município de Pirambu, SE, foram examinados em busca de parasitas, dos quais 84,13% estavam parasitados por pelo menos uma espécie de parasita encontrada: Ergasilus sp. (Copepoda) (Prevalência (P)=77,78%; Intensidade Média (IM) =10,08±15,48, AbundÂncia Média (AM) =7,48±14,27) nas brânquias, Contracaecum sp. (P=23,02%; IM=20,59±80,58, AM=4,47±39,12) na cavidade geral, Procamallanus sp. (P=0,79%; IM=1, AM=0,01±0,09), Raphidascaroides sp. (P=2,31%; IM=1,33±0,58, AM=0,33±0,22) e Cuccullanus sp. (P=0,79%; IM=1, AM=0,01±0,09) (Nematoda) no intestino, Ancyrocephalinae (Monogenea) (P=0,79%; IM=1, AM=0,01±0,09) nas brânquias, Pseudoacanthostomumpanamense (P=1,59%; IM=9,00±8,49, AM=0,14±1,36) no intestino, Clinostomum sp. (P=1,59%; IM=17,50±23,33, AM=0,29±3,03) na superfície do corpo e duas metacercárias não identificadas, denominadas como Metacercária 1 (P=0,79%; IM=1, AM=0,01±0,09) e Metacercária 2 (P=0,79%; IM=7, AM=0,06±0,62) (Digenea) ambas na bexiga natatória. Ergasilus sp. foi a espécie dominante sendo classificada como central, Contracaecum sp. como a satélite e as demais como espécies secundárias. A distribuição espacial da infecção por Ergasilus sp. e Contracaecum sp. apresentaram um padrão típico de distribuição agregada. O sexo dos hospedeiros não influenciou nas infecções parasitárias, porém a infecção por Ergasilus sp. apresentou correlação positiva e significativa entre os parâmetros biométricos e os parâmetros epidemiológicos enquanto que na infecção por Contracaecum sp. a correlação ocorreu apenas com a prevalência e a abundância.