Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina

Donax hanleyanus (Philippi, 1847) is the southernmost Donax species in the American Atlantic. It inhabits intertidal fine grain sandy shores in northern Buenos Aires Province. As with other species in this genus, these animals survive under pressure of "cropping" by fish that feed on their...

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Autores principales: Luzzatto, D.C., Penchaszadeh, P.E.
Formato: JOUR
Materias:
Bivalve
Donax hanleyanus
Inhalant siphon
Siphonal regeneration
regeneration
shellfish
Argentina
Bivalvia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07308000_v20_n1_p149_Luzzatto
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_07308000_v20_n1_p149_Luzzatto
record_format dspace
spelling todo:paper_07308000_v20_n1_p149_Luzzatto2023-10-03T15:37:22Z Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina Luzzatto, D.C. Penchaszadeh, P.E. Bivalve Donax hanleyanus Inhalant siphon Siphonal regeneration regeneration shellfish Argentina Bivalvia Donax hanleyanus Donax hanleyanus (Philippi, 1847) is the southernmost Donax species in the American Atlantic. It inhabits intertidal fine grain sandy shores in northern Buenos Aires Province. As with other species in this genus, these animals survive under pressure of "cropping" by fish that feed on their siphons. The inhalant siphon is a complex organ; its tip contains a system of branched tentacles that permit particle selection of medium and large grains and prevent their entry to the pallial cavity of the animal. To estimate the regeneration speed of the amputated siphon under laboratory conditions, a study of the regrowth sequence after an artificial cut was performed at regular intervals for complete 10-day periods. The observations in vivo under the microscope were correlated with those made by histology at the same time intervals. Results indicate that at 24 h after amputation, rudiments of the primary tentacles are observed, and the siphon is fully active in selecting particles at the fifth day (i.e., the process of regeneration of the primary, secondary, and tertiary tentacles is completed within ∼5 days). After this, a period of growing and tentacle ramification follows, even though the result is a siphon with tentacles less ramified than the original. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07308000_v20_n1_p149_Luzzatto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bivalve
Donax hanleyanus
Inhalant siphon
Siphonal regeneration
regeneration
shellfish
Argentina
Bivalvia
Donax hanleyanus
spellingShingle Bivalve
Donax hanleyanus
Inhalant siphon
Siphonal regeneration
regeneration
shellfish
Argentina
Bivalvia
Donax hanleyanus
Luzzatto, D.C.
Penchaszadeh, P.E.
Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina
topic_facet Bivalve
Donax hanleyanus
Inhalant siphon
Siphonal regeneration
regeneration
shellfish
Argentina
Bivalvia
Donax hanleyanus
description Donax hanleyanus (Philippi, 1847) is the southernmost Donax species in the American Atlantic. It inhabits intertidal fine grain sandy shores in northern Buenos Aires Province. As with other species in this genus, these animals survive under pressure of "cropping" by fish that feed on their siphons. The inhalant siphon is a complex organ; its tip contains a system of branched tentacles that permit particle selection of medium and large grains and prevent their entry to the pallial cavity of the animal. To estimate the regeneration speed of the amputated siphon under laboratory conditions, a study of the regrowth sequence after an artificial cut was performed at regular intervals for complete 10-day periods. The observations in vivo under the microscope were correlated with those made by histology at the same time intervals. Results indicate that at 24 h after amputation, rudiments of the primary tentacles are observed, and the siphon is fully active in selecting particles at the fifth day (i.e., the process of regeneration of the primary, secondary, and tertiary tentacles is completed within ∼5 days). After this, a period of growing and tentacle ramification follows, even though the result is a siphon with tentacles less ramified than the original.
format JOUR
author Luzzatto, D.C.
Penchaszadeh, P.E.
author_facet Luzzatto, D.C.
Penchaszadeh, P.E.
author_sort Luzzatto, D.C.
title Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina
title_short Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina
title_full Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina
title_fullStr Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina
title_full_unstemmed Regeneration of the inhalant siphon of Donax hanleyanus (Philippi, 1847) (Bivalvia, donacidae) from Argentina
title_sort regeneration of the inhalant siphon of donax hanleyanus (philippi, 1847) (bivalvia, donacidae) from argentina
url http://hdl.handle.net/20.500.12110/paper_07308000_v20_n1_p149_Luzzatto
work_keys_str_mv AT luzzattodc regenerationoftheinhalantsiphonofdonaxhanleyanusphilippi1847bivalviadonacidaefromargentina
AT penchaszadehpe regenerationoftheinhalantsiphonofdonaxhanleyanusphilippi1847bivalviadonacidaefromargentina
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