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

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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, C.M., Genovese, G., Rosa, G.A., Pellerano, G.N.
Formato:	JOUR
Materias:	crab salinity ultrastructure Chasmagnathus granulata Decapoda (Crustacea) Grapsidae
Acceso en línea:	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	todo:paper_00253162_v141_n4_p753_Luquet
record_format	dspace
spelling	todo:paper_00253162_v141_n4_p753_Luquet2023-10-03T14:35:53Z Ultrastructural changes in the gill epithelium of the crab Chasmagnathus granulatus (Decapoda: Grapsidae) in diluted and concentrated seawater Luquet, C.M. Genovese, G. Rosa, G.A. Pellerano, G.N. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, C.M. Genovese, G. Rosa, G.A. Pellerano, G.N. 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.
format	JOUR
author	Luquet, C.M. Genovese, G. Rosa, G.A. Pellerano, G.N.
author_facet	Luquet, C.M. Genovese, G. Rosa, G.A. Pellerano, G.N.
author_sort	Luquet, C.M.
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
url	http://hdl.handle.net/20.500.12110/paper_00253162_v141_n4_p753_Luquet
work_keys_str_mv	AT luquetcm ultrastructuralchangesinthegillepitheliumofthecrabchasmagnathusgranulatusdecapodagrapsidaeindilutedandconcentratedseawater AT genoveseg ultrastructuralchangesinthegillepitheliumofthecrabchasmagnathusgranulatusdecapodagrapsidaeindilutedandconcentratedseawater AT rosaga ultrastructuralchangesinthegillepitheliumofthecrabchasmagnathusgranulatusdecapodagrapsidaeindilutedandconcentratedseawater AT pelleranogn ultrastructuralchangesinthegillepitheliumofthecrabchasmagnathusgranulatusdecapodagrapsidaeindilutedandconcentratedseawater
_version_	1807318734608531456

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

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