Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater

Chasmagnathus granulatus Dana, 1851 is an intertidal estuarine crab that experiences acute salinity changes ranging from < 1‰ to full-strength seawater and even hypersaline waters in tide pools concentrated by evaporation. Ultrastructural changes induced by salinity in the posterior gills were ex...

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Autores principales:	Luquet, Carlos Marcelo, Genovese, Griselda, Pellerano, Gladys Norma
Publicado:	2002
Materias:	crab salinity ultrastructure Chasmagnathus granulata Decapoda (Crustacea) Grapsidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253162_v141_n4_p753_Luquet http://hdl.handle.net/20.500.12110/paper_00253162_v141_n4_p753_Luquet
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00253162_v141_n4_p753_Luquet
record_format	dspace
spelling	paper:paper_00253162_v141_n4_p753_Luquet2023-06-08T14:52:59Z Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater Luquet, Carlos Marcelo Genovese, Griselda Pellerano, Gladys Norma crab salinity ultrastructure Chasmagnathus granulata Decapoda (Crustacea) Grapsidae Chasmagnathus granulatus Dana, 1851 is an intertidal estuarine crab that experiences acute salinity changes ranging from < 1‰ to full-strength seawater and even hypersaline waters in tide pools concentrated by evaporation. Ultrastructural changes induced by salinity in the posterior gills were examined in crabs collected from the Rio de la Plata estuary Argentina during March 1999. The posterior gills of C. granulatus are involved both in ion uptake and ion secretion depending on the acclimation medium. These organs are mostly lined with a thick tissue, which presents the characteristics of a typical salt-transporting epithelium. Electron microscopy analysis of gill tissue from crabs acclimated to dilute, full, and concentrated seawater (12‰, 34‰, and 45‰ salinity) showed significant development of basolateral membrane interdigitations, with numerous mitochondria and conspicuous apical membrane infoldings. Morphometrical analysis indicated that the subcuticular space delimited by the infolding of the apical membrane was significantly increased in the gills of high-salinity acclimated crabs. Septate junctions, which are thought to define the paracellular permeability, were significantly shorter in high-salinity acclimated crabs, suggesting a possible role of the paracellular pathway in salt secretion. Fil:Luquet, C.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Genovese, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pellerano, G.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253162_v141_n4_p753_Luquet http://hdl.handle.net/20.500.12110/paper_00253162_v141_n4_p753_Luquet
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	crab salinity ultrastructure Chasmagnathus granulata Decapoda (Crustacea) Grapsidae
spellingShingle	crab salinity ultrastructure Chasmagnathus granulata Decapoda (Crustacea) Grapsidae Luquet, Carlos Marcelo Genovese, Griselda Pellerano, Gladys Norma Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater
topic_facet	crab salinity ultrastructure Chasmagnathus granulata Decapoda (Crustacea) Grapsidae
description	Chasmagnathus granulatus Dana, 1851 is an intertidal estuarine crab that experiences acute salinity changes ranging from < 1‰ to full-strength seawater and even hypersaline waters in tide pools concentrated by evaporation. Ultrastructural changes induced by salinity in the posterior gills were examined in crabs collected from the Rio de la Plata estuary Argentina during March 1999. The posterior gills of C. granulatus are involved both in ion uptake and ion secretion depending on the acclimation medium. These organs are mostly lined with a thick tissue, which presents the characteristics of a typical salt-transporting epithelium. Electron microscopy analysis of gill tissue from crabs acclimated to dilute, full, and concentrated seawater (12‰, 34‰, and 45‰ salinity) showed significant development of basolateral membrane interdigitations, with numerous mitochondria and conspicuous apical membrane infoldings. Morphometrical analysis indicated that the subcuticular space delimited by the infolding of the apical membrane was significantly increased in the gills of high-salinity acclimated crabs. Septate junctions, which are thought to define the paracellular permeability, were significantly shorter in high-salinity acclimated crabs, suggesting a possible role of the paracellular pathway in salt secretion.
author	Luquet, Carlos Marcelo Genovese, Griselda Pellerano, Gladys Norma
author_facet	Luquet, Carlos Marcelo Genovese, Griselda Pellerano, Gladys Norma
author_sort	Luquet, Carlos Marcelo
title	Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater
title_short	Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater
title_full	Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater
title_fullStr	Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater
title_full_unstemmed	Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater
title_sort	ultrastructural changes in the gill epithelium of the crab chasmagnathus granulatus (decapoda: grapsidae) in diluted and concentrated seawater
publishDate	2002
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253162_v141_n4_p753_Luquet http://hdl.handle.net/20.500.12110/paper_00253162_v141_n4_p753_Luquet
work_keys_str_mv	AT luquetcarlosmarcelo ultrastructuralchangesinthegillepitheliumofthecrabchasmagnathusgranulatusdecapodagrapsidaeindilutedandconcentratedseawater AT genovesegriselda ultrastructuralchangesinthegillepitheliumofthecrabchasmagnathusgranulatusdecapodagrapsidaeindilutedandconcentratedseawater AT pelleranogladysnorma ultrastructuralchangesinthegillepitheliumofthecrabchasmagnathusgranulatusdecapodagrapsidaeindilutedandconcentratedseawater
_version_	1768543934500306944

Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater

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