Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae)

Zidona dufresnei is a carnivorous snail that plays an important role in the trophic web as a top predator. It is a threatened species due to high levels of fisheries exploitation. In this study, we describe the morphology of the digestive gland of Z. dufresnei from Mar del Plata, Argentina, and disc...

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Autores principales: Ojeda, Mariel Adriana, Arrighetti, Florencia, Giménez, Juliana
Publicado: 2015
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v58_n1-2_p157_Ojeda
http://hdl.handle.net/20.500.12110/paper_00762997_v58_n1-2_p157_Ojeda
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spelling paper:paper_00762997_v58_n1-2_p157_Ojeda2023-06-08T15:07:21Z Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae) Ojeda, Mariel Adriana Arrighetti, Florencia Giménez, Juliana basophilic cells carnivorous snail digestive cells Gastropoda South Atlantic Ocean Caenogastropoda Gastropoda Volutidae Zidona dufresnei is a carnivorous snail that plays an important role in the trophic web as a top predator. It is a threatened species due to high levels of fisheries exploitation. In this study, we describe the morphology of the digestive gland of Z. dufresnei from Mar del Plata, Argentina, and discuss the function and the cycle of activity of the different cell types. Histological analysis reveals two types of tubules: type 1 tubules composed of digestive and basophilic cells and type 2 tubules lined by basophilic cells only. Pyramidal basophilic cells contain lipofuscin and a large amount of rough endoplasmic reticulum, which suggests that these cells are responsible for the secretion of digestive enzymes that initiate the extracellular digestion of the food. Columnar digestive cells exhibit large membrane-bound vesicles that contain proteoglycans, neutral glycosaminoglycans and small amounts of lipid and lipofuscin. The presence in digestive cells of many endocytic vesicles and residual lysosomal bodies, as evidenced by the presence of lipofuscin pigments in the apical region, indicate that digestion is completed intracellularly within these cells. The digestive cells are subject to cyclical changes involving four phases: initial, digestion, fragmentation, and disintegration stages. Fil:Ojeda, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Arrighetti, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Giménez, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v58_n1-2_p157_Ojeda http://hdl.handle.net/20.500.12110/paper_00762997_v58_n1-2_p157_Ojeda
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic basophilic cells
carnivorous snail
digestive cells
Gastropoda
South Atlantic Ocean
Caenogastropoda
Gastropoda
Volutidae
spellingShingle basophilic cells
carnivorous snail
digestive cells
Gastropoda
South Atlantic Ocean
Caenogastropoda
Gastropoda
Volutidae
Ojeda, Mariel Adriana
Arrighetti, Florencia
Giménez, Juliana
Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae)
topic_facet basophilic cells
carnivorous snail
digestive cells
Gastropoda
South Atlantic Ocean
Caenogastropoda
Gastropoda
Volutidae
description Zidona dufresnei is a carnivorous snail that plays an important role in the trophic web as a top predator. It is a threatened species due to high levels of fisheries exploitation. In this study, we describe the morphology of the digestive gland of Z. dufresnei from Mar del Plata, Argentina, and discuss the function and the cycle of activity of the different cell types. Histological analysis reveals two types of tubules: type 1 tubules composed of digestive and basophilic cells and type 2 tubules lined by basophilic cells only. Pyramidal basophilic cells contain lipofuscin and a large amount of rough endoplasmic reticulum, which suggests that these cells are responsible for the secretion of digestive enzymes that initiate the extracellular digestion of the food. Columnar digestive cells exhibit large membrane-bound vesicles that contain proteoglycans, neutral glycosaminoglycans and small amounts of lipid and lipofuscin. The presence in digestive cells of many endocytic vesicles and residual lysosomal bodies, as evidenced by the presence of lipofuscin pigments in the apical region, indicate that digestion is completed intracellularly within these cells. The digestive cells are subject to cyclical changes involving four phases: initial, digestion, fragmentation, and disintegration stages.
author Ojeda, Mariel Adriana
Arrighetti, Florencia
Giménez, Juliana
author_facet Ojeda, Mariel Adriana
Arrighetti, Florencia
Giménez, Juliana
author_sort Ojeda, Mariel Adriana
title Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae)
title_short Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae)
title_full Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae)
title_fullStr Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae)
title_full_unstemmed Morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: Volutidae)
title_sort morphology and cyclic activity of the digestive gland of zidona dufresnei (caenogastropoda: volutidae)
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v58_n1-2_p157_Ojeda
http://hdl.handle.net/20.500.12110/paper_00762997_v58_n1-2_p157_Ojeda
work_keys_str_mv AT ojedamarieladriana morphologyandcyclicactivityofthedigestiveglandofzidonadufresneicaenogastropodavolutidae
AT arrighettiflorencia morphologyandcyclicactivityofthedigestiveglandofzidonadufresneicaenogastropodavolutidae
AT gimenezjuliana morphologyandcyclicactivityofthedigestiveglandofzidonadufresneicaenogastropodavolutidae
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