Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)

The posterior gills of Uca uruguayensis are mostly lined with a thick tissue which presents the characteristics of a typical salt-transporting epithelium. Electron microscope analysis of gill tissue from crabs acclimated to both low (2.5‰) and high (44‰) salinity showed significant development of th...

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Detalles Bibliográficos
Autores principales:	Luquet, Carlos Marcelo, Pellerano, Gladys Norma
Publicado:	1997
Materias:	Crustacea Epithelium Gills Ion regulation Salt-transportation Uca Ultrastructure sodium sodium chloride animal tissue apical membrane article basolateral membrane cell ultrastructure controlled study crab desmosome electron microscope epithelium gill mitochondrion nonhuman sodium transport Animalia Decapoda (Crustacea) Ocypodidae Uca uruguayensis
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00408166_v29_n4_p495_Luquet http://hdl.handle.net/20.500.12110/paper_00408166_v29_n4_p495_Luquet
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00408166_v29_n4_p495_Luquet
record_format	dspace
spelling	paper:paper_00408166_v29_n4_p495_Luquet2023-06-08T15:04:39Z Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae) Luquet, Carlos Marcelo Pellerano, Gladys Norma Crustacea Epithelium Gills Ion regulation Salt-transportation Uca Ultrastructure sodium sodium chloride animal tissue apical membrane article basolateral membrane cell ultrastructure controlled study crab Crustacea desmosome electron microscope epithelium gill mitochondrion nonhuman sodium transport Animalia Crustacea Decapoda (Crustacea) Ocypodidae Uca Uca uruguayensis The posterior gills of Uca uruguayensis are mostly lined with a thick tissue which presents the characteristics of a typical salt-transporting epithelium. Electron microscope analysis of gill tissue from crabs acclimated to both low (2.5‰) and high (44‰) salinity showed significant development of the basolateral membrane interdigitations with numerous mitochondria and conspicuous apical membrane infoldings. In high-salinity acclimated crabs, the basolateral interdigitations extended to the apical membrane. Under these conditions, apical infoldings were expanded laterally (forming wide subcuticular spaces), while the apical infoldings of low-salinity adapted animals appeared as regular leaflets. Septate desmosomes were also much more developed in low-salinity exposed animals than in those kept under high-salinity conditions. These morphological observations were analyzed for correlation with the currently-accepted ion hyporegulation model for crustaceans, which is mainly based on transcellular sodium flow. In this study, we propose an ion hyporegulation model involving apical paracellular sodium flux. Fil:Luquet, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pellerano, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00408166_v29_n4_p495_Luquet http://hdl.handle.net/20.500.12110/paper_00408166_v29_n4_p495_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	Crustacea Epithelium Gills Ion regulation Salt-transportation Uca Ultrastructure sodium sodium chloride animal tissue apical membrane article basolateral membrane cell ultrastructure controlled study crab Crustacea desmosome electron microscope epithelium gill mitochondrion nonhuman sodium transport Animalia Crustacea Decapoda (Crustacea) Ocypodidae Uca Uca uruguayensis
spellingShingle	Crustacea Epithelium Gills Ion regulation Salt-transportation Uca Ultrastructure sodium sodium chloride animal tissue apical membrane article basolateral membrane cell ultrastructure controlled study crab Crustacea desmosome electron microscope epithelium gill mitochondrion nonhuman sodium transport Animalia Crustacea Decapoda (Crustacea) Ocypodidae Uca Uca uruguayensis Luquet, Carlos Marcelo Pellerano, Gladys Norma Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)
topic_facet	Crustacea Epithelium Gills Ion regulation Salt-transportation Uca Ultrastructure sodium sodium chloride animal tissue apical membrane article basolateral membrane cell ultrastructure controlled study crab Crustacea desmosome electron microscope epithelium gill mitochondrion nonhuman sodium transport Animalia Crustacea Decapoda (Crustacea) Ocypodidae Uca Uca uruguayensis
description	The posterior gills of Uca uruguayensis are mostly lined with a thick tissue which presents the characteristics of a typical salt-transporting epithelium. Electron microscope analysis of gill tissue from crabs acclimated to both low (2.5‰) and high (44‰) salinity showed significant development of the basolateral membrane interdigitations with numerous mitochondria and conspicuous apical membrane infoldings. In high-salinity acclimated crabs, the basolateral interdigitations extended to the apical membrane. Under these conditions, apical infoldings were expanded laterally (forming wide subcuticular spaces), while the apical infoldings of low-salinity adapted animals appeared as regular leaflets. Septate desmosomes were also much more developed in low-salinity exposed animals than in those kept under high-salinity conditions. These morphological observations were analyzed for correlation with the currently-accepted ion hyporegulation model for crustaceans, which is mainly based on transcellular sodium flow. In this study, we propose an ion hyporegulation model involving apical paracellular sodium flux.
author	Luquet, Carlos Marcelo Pellerano, Gladys Norma
author_facet	Luquet, Carlos Marcelo Pellerano, Gladys Norma
author_sort	Luquet, Carlos Marcelo
title	Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)
title_short	Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)
title_full	Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)
title_fullStr	Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)
title_full_unstemmed	Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)
title_sort	salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, uca uruguayensis (nobili, 1901) (decapoda, ocypodidae)
publishDate	1997
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00408166_v29_n4_p495_Luquet http://hdl.handle.net/20.500.12110/paper_00408166_v29_n4_p495_Luquet
work_keys_str_mv	AT luquetcarlosmarcelo salinityinducedchangesinthefinestructureofthegillsofthesemiterrestrialestuariancrabucauruguayensisnobili1901decapodaocypodidae AT pelleranogladysnorma salinityinducedchangesinthefinestructureofthegillsofthesemiterrestrialestuariancrabucauruguayensisnobili1901decapodaocypodidae
_version_	1768541600002080768

Salinity-induced changes in the fine structure of the gills of the semiterrestrial estuarian crab, Uca uruguayensis (Nobili, 1901) (Decapoda, Ocypodidae)

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