Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae)
Several internal and external parasites have been reported in the wild population of the pejerrey, Odontesthes bonariensis, although most of previous studies have focused on taxonomy. The aims of this research were to describe the seasonal variation and the age prevalence pattern of the nematode Con...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Spanish |
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Instituto de Limnología "Raúl A. Ringuelet. (CONICET-UNLP)
2019-04-01
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| Series: | Biología Acuática |
| Subjects: | |
| Online Access: | https://revistas.unlp.edu.ar/bacuatica/article/view/6814 |
| _version_ | 1819241521351753728 |
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| author | Miguel Mancini I. Nicola Alejandro Larriestra Victor Salinas César Bucco |
| author_facet | Miguel Mancini I. Nicola Alejandro Larriestra Victor Salinas César Bucco |
| author_sort | Miguel Mancini |
| collection | DOAJ |
| description | Several internal and external parasites have been reported in the wild population of the pejerrey, Odontesthes bonariensis, although most of previous studies have focused on taxonomy. The aims of this research were to describe the seasonal variation and the age prevalence pattern of the nematode Contracaecum sp., and to characterize the association between the pejerrey parasitic infestation with body condition score. Four samples, one per season, were collected during the years 2002 and 2003 in a shallow lake located in the southern area of Cordoba, Argentina (34° 36’S, 64° 24’W). The fishes caught were subject to age estimation using the Von Bertalanffy’s equation, the assessment of the relative weight (Wr) and the determination of abundance and intensity of the parasite infestation. The standard length average (n = 283) was 185,5 mm (range 38 - 380). The proportion of fishes with at least one parasite was 10,1%. The highest abundance (0,94) and prevalence (24,6%) were observed in summer, and the highest average intensity in autumn (5,7 parasites /fish). Fishes > 2 years old showed 5,99 more times (odds ratio IC95% 2,41 - 14,84) of being parasited with Contracaecum sp. in comparison to younger fishes. The Wr was lower for infested fishes (85,45; IC95% 81,82 - 89,08) in comparison to non infested specymens even after the statistical adjustment for season and age effects. Since Contracaecum sp. is zoonotic, the prevalence reported may pose a risk to humans due to the common habits of consuming uncontrolled fishes in recreational fisheries. In addition to that, parasitic infestation may also reduce body condition in fishes of commercial size. |
| first_indexed | 2024-12-23T14:25:14Z |
| format | Article |
| id | doaj.art-7adefd18da3943e4b544f9752b9c2691 |
| institution | Directory Open Access Journal |
| issn | 1668-4869 |
| language | Spanish |
| last_indexed | 2024-12-23T14:25:14Z |
| publishDate | 2019-04-01 |
| publisher | Instituto de Limnología "Raúl A. Ringuelet. (CONICET-UNLP) |
| record_format | Article |
| series | Biología Acuática |
| spelling | doaj.art-7adefd18da3943e4b544f9752b9c26912022-12-21T17:43:41ZspaInstituto de Limnología "Raúl A. Ringuelet. (CONICET-UNLP)Biología Acuática1668-48692019-04-0122Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae)Miguel Mancini0I. Nicola1Alejandro Larriestra2Victor Salinas3César Bucco4Facultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto, Córdoba, ArgentinaFacultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto, Córdoba, ArgentinaFacultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto, Córdoba, ArgentinaFacultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto, Córdoba, ArgentinaFacultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto, Córdoba, ArgentinaSeveral internal and external parasites have been reported in the wild population of the pejerrey, Odontesthes bonariensis, although most of previous studies have focused on taxonomy. The aims of this research were to describe the seasonal variation and the age prevalence pattern of the nematode Contracaecum sp., and to characterize the association between the pejerrey parasitic infestation with body condition score. Four samples, one per season, were collected during the years 2002 and 2003 in a shallow lake located in the southern area of Cordoba, Argentina (34° 36’S, 64° 24’W). The fishes caught were subject to age estimation using the Von Bertalanffy’s equation, the assessment of the relative weight (Wr) and the determination of abundance and intensity of the parasite infestation. The standard length average (n = 283) was 185,5 mm (range 38 - 380). The proportion of fishes with at least one parasite was 10,1%. The highest abundance (0,94) and prevalence (24,6%) were observed in summer, and the highest average intensity in autumn (5,7 parasites /fish). Fishes > 2 years old showed 5,99 more times (odds ratio IC95% 2,41 - 14,84) of being parasited with Contracaecum sp. in comparison to younger fishes. The Wr was lower for infested fishes (85,45; IC95% 81,82 - 89,08) in comparison to non infested specymens even after the statistical adjustment for season and age effects. Since Contracaecum sp. is zoonotic, the prevalence reported may pose a risk to humans due to the common habits of consuming uncontrolled fishes in recreational fisheries. In addition to that, parasitic infestation may also reduce body condition in fishes of commercial size.https://revistas.unlp.edu.ar/bacuatica/article/view/6814pejerreypecesContracaecumArgentina |
| spellingShingle | Miguel Mancini I. Nicola Alejandro Larriestra Victor Salinas César Bucco Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae) Biología Acuática pejerrey peces Contracaecum Argentina |
| title | Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae) |
| title_full | Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae) |
| title_fullStr | Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae) |
| title_full_unstemmed | Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae) |
| title_short | Patrones de riesgo e implicancias de la presencia de Contracaecum sp. (Nematoda, Anisakidae) en pejerrey Odontesthes bonariensis (Pisces, Atherinopsidae) |
| title_sort | patrones de riesgo e implicancias de la presencia de contracaecum sp nematoda anisakidae en pejerrey odontesthes bonariensis pisces atherinopsidae |
| topic | pejerrey peces Contracaecum Argentina |
| url | https://revistas.unlp.edu.ar/bacuatica/article/view/6814 |
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