MICROHABITAT PREFERENCE AND SEASONALITY OF GILL MONOGENEANS IN NILE TILAPIA REARED IN SOUTHERN BRAZIL

Authors

  • Mauricio Laterça Martins AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil. https://orcid.org/0000-0001-5692-7591
  • Ana Rosa Santana de Sá AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil.
  • Gabriela Tomas Jerônimo AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil. https://orcid.org/0000-0002-2071-4428
  • Karen Roberta Tancredo AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil. https://orcid.org/0000-0003-0702-6708
  • Eduardo Luis Tavares Gonçalves AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil. https://orcid.org/0000-0001-6005-6928
  • Daniela Bampi AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil. https://orcid.org/0000-0003-4021-7063
  • Giselle Mari Speck AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil. https://orcid.org/0000-0001-6137-4522
  • Alexandre Mattos Sandin AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, CCA, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brasil. https://orcid.org/0000-0002-9331-9138

DOI:

https://doi.org/10.24039/rnh201481897

Keywords:

Oreochromis, monogenean parasites, gills, season.

Abstract

Few studies have been done to evaluate the monogenean microhabitat preference. This study evaluated the monogenean distribution among different gill arches of Nile tilapia Oreochromis niloticus and seasonality. A total of 89 fish were captured in a pond located in Chapecó, Santa Catarina, for parasitological analysis. After fish euthanasia, the gill arches were removed, separated from the most external to the most internal and named as I, II, III and IV. Transparency, pH, oxygen, temperature, alkalinity, conductivity, ammonia, iron, orthophosphate, sulfide, nitrite and nitrate of water pond were measured. In spring 2008 the mean abundances of the monogeneans (Scutogyrus longicornis, Cychlidogyrus sclerosus, C. thurstonae and C. tilapiae) in the arches I, II, III and IV were, respectively, 11.45, 14.45, 13.8, 13.15, in summer 2008 theywere 13.12, 12.25, 14.94, 21.53, in summer 2009 they were 2.75, 3.25, 2.45, 2.45, in autumn 2009 they were 13.44, 18.78, 11.78, 9.22 and in winter 2009 they were 0.35, 0.5, 0.3, 0.5. Monogenean preference for microhabitat in the gills of farmed Nile Tilapia was not observed. A significant increase of parasites in spring and summer 2008 and autumn 2009 was observed. The highest number of parasites coincided with seasons of high water temperature. The lack of microhabitat preference among the gill arches suggest homogenous distribution of parasites combined with water quality parameters.

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Published

2014-02-06

How to Cite

Laterça Martins, M., Santana de Sá, A. R., Tomas Jerônimo, G., Tancredo, K. R., Tavares Gonçalves, E. L., Bampi, D., Speck, G. M., & Mattos Sandin, A. (2014). MICROHABITAT PREFERENCE AND SEASONALITY OF GILL MONOGENEANS IN NILE TILAPIA REARED IN SOUTHERN BRAZIL. Neotropical Helminthology, 8(1), 47–58. https://doi.org/10.24039/rnh201481897

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Artículos Originales