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Biodiversity of the myxozoans (Myxozoa: Myxosporea) parasite of dominant fishes from Peixes River, tributary of medium Tietê River, SP, by means of morphological, histological, and molecular characterization

Abstract

Brazil is the fifth largest country in the world and has the highest species diversity of all of the megadiversity countries, accounting for roughly 14% of the world's biota. Currently, the biodiversity of marine and freshwater ecosystems of Latin America is threatened, mainly by environmental problems resulting from the degradation of the ecosystems. One example is the river Rio do Peixe, a tributary of the dam Barra Bonita whose headwater are the slopes of the Cuesta de Botucatu, presenting an altitudinal gradient, a good state of conservation and water quality. However, in the region of its mouth, there is a dramatic change in limnological conditions due to the influence of hypereutrophic reservoir. From another perspective, studies related to parasites and other pathogens of aquatic organisms has increased considerably to relevance, especially those hosts with potential for growing and marketing, given the significant increase of these activities in Brazil and worldwide. Among the agents responsible for diseases in fish are the myxosporean, which can cause large economic damage, with high mortality ratios. Based on the above this study aims to evaluate the biodiversity of mixosporean parasites of 20 fish species, through morphological, histological, and molecular characterization, collected in three parts of the river Rio do Peixe due to socio-economic importance of this river for the region and high diversity of fish, which enables many species can be studied with great possibilities for describing new species. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
AZEVEDO, RODNEY KOZLOWISKI; MIRANDOLA DIAS VIEIRA, DIEGO HENRIQUE; VIEIRA, GUSTAVO HENRIQUE; SILVA, REINALDO JOSE; MATOS, EDILSON; ABDALLAH, VANESSA DORO. Phylogeny, ultrastructure and histopathology of Myxobolus lomi sp nov., a parasite of Prochilodus lineatus (Valenciennes, 1836) (Characiformes: Prochilodontidae) from the Peixes River, Sao Paulo State, Brazil. Parasitology International, v. 63, n. 2, p. 303-307, APR 2014. Web of Science Citations: 6.
DE AZEVEDO, RODNEY KOZLOWISKI; ABDALLAH, VANESSA DORO; KRUEGER PAES, JACIARA VANESSA; DA SILVA, REINALDO JOSE; MATOS, PATRICIA; VELASCO, MICHELE; MATOS, EDILSON. Henneguya nagelii n. sp (Myxozoa: Myxobolidae) in Cyphocharax nagelii (Steindachner, 1881) (Teleostei: Characiformes: Curimatidae) from the Peixe's River, So Paulo State, Brazil. Parasitology Research, v. 112, n. 10, p. 3601-3605, OCT 2013. Web of Science Citations: 5.

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