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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Autores principales: Fassiano, A.V., Ortiz, N., Ríos de Molina, M.D.C.
Formato: JOUR
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: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 todo:paper_00222933_v51_n43-44_p2645_Fassiano
record_format dspace
spelling todo:paper_00222933_v51_n43-44_p2645_Fassiano2023-10-03T14:30:47Z Reproductive status, antioxidant defences and lipid peroxidation in Octopus tehuelchus (Cephalopoda: Octopodidae) females Fassiano, A.V. Ortiz, N. Ríos de Molina, M.D.C. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, A.V.
Ortiz, N.
Ríos de Molina, M.D.C.
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.
format JOUR
author Fassiano, A.V.
Ortiz, N.
Ríos de Molina, M.D.C.
author_facet Fassiano, A.V.
Ortiz, N.
Ríos de Molina, M.D.C.
author_sort Fassiano, A.V.
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
url http://hdl.handle.net/20.500.12110/paper_00222933_v51_n43-44_p2645_Fassiano
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AT ortizn reproductivestatusantioxidantdefencesandlipidperoxidationinoctopustehuelchuscephalopodaoctopodidaefemales
AT riosdemolinamdc reproductivestatusantioxidantdefencesandlipidperoxidationinoctopustehuelchuscephalopodaoctopodidaefemales
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