Histopatologia de Scomberomorus cavalla Cuvier 1829 (Perciformes: Scombridae) como biomarcador de la contaminación acuática
In the environmental monitoring it has been pointed out the importance of using histopathological scoring system protocols to determine environmental stress. Therefore, the aim of this study was to evaluate semi-quantitatively the histopathological changes in the liver, gills and muscle of the fish...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | México |
| Institución: | Universidad Autónoma Metropolitana |
| Repositorio: | Repositorio Institucional de la UAM Iztapalapa |
| Idioma: | español |
| OAI Identifier: | oai:bindani.izt.uam.mx:765371417 |
| Acceso en línea: | https://doi.org/10.24275/uami.765371417 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/LEM/Escómbridos -- Histología patológica info:eu-repo/classification/LEM/Scombridae -- Histology, Pathological info:eu-repo/classification/LEM/Marine pollution info:eu-repo/classification/LEM/Contaminación marina info:eu-repo/classification/cti/2 |
| Sumario: | In the environmental monitoring it has been pointed out the importance of using histopathological scoring system protocols to determine environmental stress. Therefore, the aim of this study was to evaluate semi-quantitatively the histopathological changes in the liver, gills and muscle of the fish Scomberomorus cavalla to determine the health status of the organisms. The study was conducted in Tecolutla, Veracruz, Mexico. The organs analyzed were included in paraffin, cut (5 μm) and stained with H-E. A total of 63 slates (N = 7) were analyzed under an optical microscope. A modified version of the quantitative histological protocol described by Bernet et al. (1999) was used to evaluate target organs. Every alteration was assigned an importance factor and a score value based on the percentage of occurrence. The histopathological analysis reveals that the reference categories that presented greater relevance in the organs analyzed were circulatory disturbances and progressive changes in the liver (melanomacrophage centers) and gill (hyperplasia and lamellar fusion). The health diagnosis evaluated from the health indexes corresponds to organisms with normal tissue and structure, as well as the presence of moderate histopathological alterations. According to the scale of semiquantitative assessment, the lesion rates estimated in the present work correspond to poorly contaminated water, hence histopathological analysis can be a useful biomarker in the evaluation of aquatic contamination. |
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