Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil

ABSTRACT Parasitism in fish can occur due to an imbalance in the environment-host-parasite relationship, usually associated with poor environmental quality. The present study aimed to determine the frequency of parasitism and histological alterations in the gills of Centropomus undecimalis from the...

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Autores principales:	Cantanhêde,Sildiane Martins, Sodré-Campos,Vívian Cristina, Pereira,Dayane Pestana, Medeiros,Almerinda Macieira, Fortes-Carvalho-Neta,Raimunda Nonata, Tchaicka,Lígia, Silva-Santos,Débora Martins
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	Centropomus undecimalis parasite histopathology snook environment pollution
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200377
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spelling	oai:scielo:S0718-560X20180002003772018-06-13Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, BrazilCantanhêde,Sildiane MartinsSodré-Campos,Vívian CristinaPereira,Dayane PestanaMedeiros,Almerinda MacieiraFortes-Carvalho-Neta,Raimunda NonataTchaicka,LígiaSilva-Santos,Débora Martins Centropomus undecimalis parasite histopathology snook environment pollution ABSTRACT Parasitism in fish can occur due to an imbalance in the environment-host-parasite relationship, usually associated with poor environmental quality. The present study aimed to determine the frequency of parasitism and histological alterations in the gills of Centropomus undecimalis from the Jansen Lagoon Ecological Park in São Luís, Maranhão, Brazil. Thirty-three specimens of C. undecimalis were collected. The first right gill arch was removed from each animal and fixed in 10% formalin for 24 h. These were then decalcified in 10% nitric acid, dehydrated in increasing concentrations of alcohol, clarified in xylene and impregnated with and embedded in paraffin. Five-μm thick sections were stained with hematoxylin and eosin for histologic description and to determine parasite frequency. The gill lesions of each fish were semiquantitatively evaluated by calculating the histological alteration index (HAI). Structural alterations in the gills, such as epithelial hyperplasia and mucus, were associated with parasites in 48.4% of the fish. Three families of parasites from the Monogenean and Myxosporean groups were identified. The HAI average was 53.3, demonstrating that individuals collected from C. undecimalis had severe tissue modifications. Therefore, parasitism caused structural damages in the gill tissues of sampled fish, damages that can impair the organ's physiology, and harm the fish health.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.2 20182018-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200377en10.3856/vol46-issue2-fulltext-13
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Centropomus undecimalis parasite histopathology snook environment pollution
spellingShingle	Centropomus undecimalis parasite histopathology snook environment pollution Cantanhêde,Sildiane Martins Sodré-Campos,Vívian Cristina Pereira,Dayane Pestana Medeiros,Almerinda Macieira Fortes-Carvalho-Neta,Raimunda Nonata Tchaicka,Lígia Silva-Santos,Débora Martins Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil
description	ABSTRACT Parasitism in fish can occur due to an imbalance in the environment-host-parasite relationship, usually associated with poor environmental quality. The present study aimed to determine the frequency of parasitism and histological alterations in the gills of Centropomus undecimalis from the Jansen Lagoon Ecological Park in São Luís, Maranhão, Brazil. Thirty-three specimens of C. undecimalis were collected. The first right gill arch was removed from each animal and fixed in 10% formalin for 24 h. These were then decalcified in 10% nitric acid, dehydrated in increasing concentrations of alcohol, clarified in xylene and impregnated with and embedded in paraffin. Five-μm thick sections were stained with hematoxylin and eosin for histologic description and to determine parasite frequency. The gill lesions of each fish were semiquantitatively evaluated by calculating the histological alteration index (HAI). Structural alterations in the gills, such as epithelial hyperplasia and mucus, were associated with parasites in 48.4% of the fish. Three families of parasites from the Monogenean and Myxosporean groups were identified. The HAI average was 53.3, demonstrating that individuals collected from C. undecimalis had severe tissue modifications. Therefore, parasitism caused structural damages in the gill tissues of sampled fish, damages that can impair the organ's physiology, and harm the fish health.
author	Cantanhêde,Sildiane Martins Sodré-Campos,Vívian Cristina Pereira,Dayane Pestana Medeiros,Almerinda Macieira Fortes-Carvalho-Neta,Raimunda Nonata Tchaicka,Lígia Silva-Santos,Débora Martins
author_facet	Cantanhêde,Sildiane Martins Sodré-Campos,Vívian Cristina Pereira,Dayane Pestana Medeiros,Almerinda Macieira Fortes-Carvalho-Neta,Raimunda Nonata Tchaicka,Lígia Silva-Santos,Débora Martins
author_sort	Cantanhêde,Sildiane Martins
title	Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil
title_short	Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil
title_full	Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil
title_fullStr	Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil
title_full_unstemmed	Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil
title_sort	parasitism in gills of centropomus undecimalis (pisces, centropomidae) from a protected area in são luís, maranhão, brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200377
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Parasitism in gills of Centropomus undecimalis (Pisces, Centropomidae) from a protected area in São Luís, Maranhão, Brazil

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