POLLUTION AND ITS RELATIONSHIP WITH HISTOLOGICAL CHANGES IN
Oct 26, 2023 3:14:32 GMT -6
Post by account_disabled on Oct 26, 2023 3:14:32 GMT -6
The environmental use of the Cerrado by agriculture, livestock and mineral exploration promotes changes that affect biological systems as a whole, mainly aquatic ecosystems. The northeast of Goiás has a vocation for livestock farming and has recently been explored for mineral extraction, due to its rich subsoil. Within this context, are there negative impacts on the health of aquatic organisms, given the impacts resulting from environmental exploitation?
Thus, the present study aimed to investigate the histological conditions in the gills and liver of Salminus hilarii in a stretch of river in the headwaters of Araguaia, in the Northwest of Goiás, in order to determine the health of these organisms in the different sampling sites, distributed europe mobile number list throughout the region. throughout the studied section. In this sense, specimens of S. hilarii were captured using fishing techniques such as gill nets and cast nets. From these, the internal organs were extracted, which were treated and laminated for subsequent microscopic analysis. The specimens analyzed ranged from no changes in the tissue structure (liver and gills), to severe changes, with possible loss of functions of the analyzed organs recorded in specimens downstream of the control areas.
They presented structural changes in the gill tissue, such as lamellar fusion, proliferation of the epithelium, proliferation of the laminar epithelium, aneurysms, edema and necrosis. As well as, for the liver, it presented damage, such as peripheral nucleus, nuclear vacuolization, microvesicular steatosis, macrovesicular steatosis, nuclear hypertrophy, nuclear atrophy, fibrosis and melanomacrophages. Therefore, these gill and liver changes indicate that organisms inserted in the aquatic environment may suffer histological dysfunctions resulting from contact with metals dissolved in the environment. Keywords: Histology, cerrado rivers, heavy metals, animal health, northwest Goiás.
Thus, the present study aimed to investigate the histological conditions in the gills and liver of Salminus hilarii in a stretch of river in the headwaters of Araguaia, in the Northwest of Goiás, in order to determine the health of these organisms in the different sampling sites, distributed europe mobile number list throughout the region. throughout the studied section. In this sense, specimens of S. hilarii were captured using fishing techniques such as gill nets and cast nets. From these, the internal organs were extracted, which were treated and laminated for subsequent microscopic analysis. The specimens analyzed ranged from no changes in the tissue structure (liver and gills), to severe changes, with possible loss of functions of the analyzed organs recorded in specimens downstream of the control areas.
They presented structural changes in the gill tissue, such as lamellar fusion, proliferation of the epithelium, proliferation of the laminar epithelium, aneurysms, edema and necrosis. As well as, for the liver, it presented damage, such as peripheral nucleus, nuclear vacuolization, microvesicular steatosis, macrovesicular steatosis, nuclear hypertrophy, nuclear atrophy, fibrosis and melanomacrophages. Therefore, these gill and liver changes indicate that organisms inserted in the aquatic environment may suffer histological dysfunctions resulting from contact with metals dissolved in the environment. Keywords: Histology, cerrado rivers, heavy metals, animal health, northwest Goiás.