Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females

As in other semelparous cephalopods, Octopus tehuelchus females enter a senescent state after spawning. In several taxa, damage to macromolecules that result from an imbalance between antioxidant defences and the production of reactive oxygen species (i.e. oxidative stress) has been postulated as on...

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Detalles Bibliográficos
Autores principales:	Fassiano, Anabella Victoria, Ortiz, Nicolás, Ríos de Molina, María del Carmen
Publicado:	2017
Materias:	biochemical changes Cephalopods oxidative stress semelparity senescence antioxidant biochemistry cephalopod enzyme activity lipid metabolism oxidation reactive oxygen species reproductive status spawning Cephalopoda Mollusca Octopodidae Octopus Octopus tehuelchus
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222933_v51_n43-44_p2645_Fassiano http://hdl.handle.net/20.500.12110/paper_00222933_v51_n43-44_p2645_Fassiano
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00222933_v51_n43-44_p2645_Fassiano
record_format	dspace
spelling	paper:paper_00222933_v51_n43-44_p2645_Fassiano2023-06-08T14:49:03Z Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females Fassiano, Anabella Victoria Ortiz, Nicolás Ríos de Molina, María del Carmen biochemical changes Cephalopods oxidative stress semelparity senescence antioxidant biochemistry cephalopod enzyme activity lipid metabolism oxidation oxidative stress reactive oxygen species reproductive status semelparity senescence spawning Cephalopoda Mollusca Octopodidae Octopus Octopus tehuelchus As in other semelparous cephalopods, Octopus tehuelchus females enter a senescent state after spawning. In several taxa, damage to macromolecules that result from an imbalance between antioxidant defences and the production of reactive oxygen species (i.e. oxidative stress) has been postulated as one of the physiological costs of reproduction and one factor that contributes to ageing. In this work, we evaluate whether enzymatic and non-enzymatic antioxidant defences are conditioned by reproductive status in O. tehuelchus obtained from a wild population. The main antioxidant defences, catalase (CAT), superoxide dismutase (SOD), reduced gluthation (GSH) and lipid peroxidation (TBARS), were assessed in somatic and reproductive tissues from octopus females, at immature, mature and spent stages. Oviducal glands showed an increase in TBARS that coincides with a decrease in GSH when females reach a spent stage. No significant changes were observed in the assayed parameters on the ovary wall, digestive gland, mantle and gills along maturity stages. CAT activity was undetectable in most analysed tissues, SOD activity and GSH were similar to or lower than in other cephalopods, while average TBARS levels in somatic tissues were at least one order of magnitude higher than levels found in other molluscs. Our results show that during sexual maturation and after natural oxidative stress conditions (spawning), only oviducal glands show changes that can be linked with the physiological processes of different reproductive status. The low antioxidant defences and the flat protective reactions after spawning could be associated with the semelparous life history of this species. © 2017 Informa UK Limited, trading as Taylor & Francis Group. Fil:Fassiano, A.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ortiz, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ríos de Molina, M.D.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222933_v51_n43-44_p2645_Fassiano http://hdl.handle.net/20.500.12110/paper_00222933_v51_n43-44_p2645_Fassiano
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	biochemical changes Cephalopods oxidative stress semelparity senescence antioxidant biochemistry cephalopod enzyme activity lipid metabolism oxidation oxidative stress reactive oxygen species reproductive status semelparity senescence spawning Cephalopoda Mollusca Octopodidae Octopus Octopus tehuelchus
spellingShingle	biochemical changes Cephalopods oxidative stress semelparity senescence antioxidant biochemistry cephalopod enzyme activity lipid metabolism oxidation oxidative stress reactive oxygen species reproductive status semelparity senescence spawning Cephalopoda Mollusca Octopodidae Octopus Octopus tehuelchus Fassiano, Anabella Victoria Ortiz, Nicolás Ríos de Molina, María del Carmen Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females
topic_facet	biochemical changes Cephalopods oxidative stress semelparity senescence antioxidant biochemistry cephalopod enzyme activity lipid metabolism oxidation oxidative stress reactive oxygen species reproductive status semelparity senescence spawning Cephalopoda Mollusca Octopodidae Octopus Octopus tehuelchus
description	As in other semelparous cephalopods, Octopus tehuelchus females enter a senescent state after spawning. In several taxa, damage to macromolecules that result from an imbalance between antioxidant defences and the production of reactive oxygen species (i.e. oxidative stress) has been postulated as one of the physiological costs of reproduction and one factor that contributes to ageing. In this work, we evaluate whether enzymatic and non-enzymatic antioxidant defences are conditioned by reproductive status in O. tehuelchus obtained from a wild population. The main antioxidant defences, catalase (CAT), superoxide dismutase (SOD), reduced gluthation (GSH) and lipid peroxidation (TBARS), were assessed in somatic and reproductive tissues from octopus females, at immature, mature and spent stages. Oviducal glands showed an increase in TBARS that coincides with a decrease in GSH when females reach a spent stage. No significant changes were observed in the assayed parameters on the ovary wall, digestive gland, mantle and gills along maturity stages. CAT activity was undetectable in most analysed tissues, SOD activity and GSH were similar to or lower than in other cephalopods, while average TBARS levels in somatic tissues were at least one order of magnitude higher than levels found in other molluscs. Our results show that during sexual maturation and after natural oxidative stress conditions (spawning), only oviducal glands show changes that can be linked with the physiological processes of different reproductive status. The low antioxidant defences and the flat protective reactions after spawning could be associated with the semelparous life history of this species. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
author	Fassiano, Anabella Victoria Ortiz, Nicolás Ríos de Molina, María del Carmen
author_facet	Fassiano, Anabella Victoria Ortiz, Nicolás Ríos de Molina, María del Carmen
author_sort	Fassiano, Anabella Victoria
title	Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females
title_short	Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females
title_full	Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females
title_fullStr	Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females
title_full_unstemmed	Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females
title_sort	reproductive status, antioxidant defences and lipid peroxidation in octopus tehuelchus (cephalopoda: octopodidae) females
publishDate	2017
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222933_v51_n43-44_p2645_Fassiano http://hdl.handle.net/20.500.12110/paper_00222933_v51_n43-44_p2645_Fassiano
work_keys_str_mv	AT fassianoanabellavictoria reproductivestatusantioxidantdefencesandlipidperoxidationinoctopustehuelchuscephalopodaoctopodidaefemales AT ortiznicolas reproductivestatusantioxidantdefencesandlipidperoxidationinoctopustehuelchuscephalopodaoctopodidaefemales AT riosdemolinamariadelcarmen reproductivestatusantioxidantdefencesandlipidperoxidationinoctopustehuelchuscephalopodaoctopodidaefemales
_version_	1768542926855471104

Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females

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