Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations
Arctica islandica reaches maximum life span potentials (MLSP) of 405 and 150 years around Iceland and Helgoland, respectively. The combined effects of a low-metabolic lifestyle, low oxidative damage, constant cellular protection and tissue maintenance, appear to slow-down the physiological aging pro...
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Universität Bremen
2011
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/125 https://nbn-resolving.org/urn:nbn:de:gbv:46-00101989-19 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/125 2023-05-15T15:22:27+02:00 Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations Lebensstrategien der langlebigen Muschel Arctica islandica, untersucht an Populationen entlang eines Klimagradienten-Umwelteinflüsse und evolutionäre Anpassungen Strahl, Julia Dringen, Ralf Abele, Doris 2011-04-29 application/pdf https://media.suub.uni-bremen.de/handle/elib/125 https://nbn-resolving.org/urn:nbn:de:gbv:46-00101989-19 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/125 urn:nbn:de:gbv:46-00101989-19 info:eu-repo/semantics/openAccess Bitte wählen Sie eine Lizenz aus: (Unsere Empfehlung: CC-BY) CC-BY Arctica islandica metabolism proliferation apoptosis antioxidant capacities aging metabolic rate depression burrowing mantle cavity water pO2 reactive oxygen species formation nitric oxide hemocytes 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2011 ftsubbremen 2022-11-09T07:09:18Z Arctica islandica reaches maximum life span potentials (MLSP) of 405 and 150 years around Iceland and Helgoland, respectively. The combined effects of a low-metabolic lifestyle, low oxidative damage, constant cellular protection and tissue maintenance, appear to slow-down the physiological aging process in A. islandica. Due to low standard metabolic rates and down-regulation of internal pO2, formation rates of reactive oxygen species (ROS) were low in the clam. Proliferation and apoptosis intensities were low, but constant over 140 years of age. Self-induced burrowing and metabolic rate depression (MRD) seem to be key energy-saving and life-prolonging parameters in A. islandica. During shell closure, mantle cavity water pO2 decreased to 0 kPa for longer than 24 h, while anaerobic metabolism was initially detected after 3.5 days of MRD. A ROS-burst was absent in isolated gills of A. islandica following hypoxia-reoxygenation, antioxidant capacities remained equally high under normoxia and MRD. Local impacts of environmental conditions on behavioral and physiological traits in the clams seem to be responsible for different population-specific MLSPs. Doctoral or Postdoctoral Thesis Arctica islandica Iceland Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Helgoland |
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Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Arctica islandica metabolism proliferation apoptosis antioxidant capacities aging metabolic rate depression burrowing mantle cavity water pO2 reactive oxygen species formation nitric oxide hemocytes 570 570 Life sciences biology ddc:570 |
spellingShingle |
Arctica islandica metabolism proliferation apoptosis antioxidant capacities aging metabolic rate depression burrowing mantle cavity water pO2 reactive oxygen species formation nitric oxide hemocytes 570 570 Life sciences biology ddc:570 Strahl, Julia Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations |
topic_facet |
Arctica islandica metabolism proliferation apoptosis antioxidant capacities aging metabolic rate depression burrowing mantle cavity water pO2 reactive oxygen species formation nitric oxide hemocytes 570 570 Life sciences biology ddc:570 |
description |
Arctica islandica reaches maximum life span potentials (MLSP) of 405 and 150 years around Iceland and Helgoland, respectively. The combined effects of a low-metabolic lifestyle, low oxidative damage, constant cellular protection and tissue maintenance, appear to slow-down the physiological aging process in A. islandica. Due to low standard metabolic rates and down-regulation of internal pO2, formation rates of reactive oxygen species (ROS) were low in the clam. Proliferation and apoptosis intensities were low, but constant over 140 years of age. Self-induced burrowing and metabolic rate depression (MRD) seem to be key energy-saving and life-prolonging parameters in A. islandica. During shell closure, mantle cavity water pO2 decreased to 0 kPa for longer than 24 h, while anaerobic metabolism was initially detected after 3.5 days of MRD. A ROS-burst was absent in isolated gills of A. islandica following hypoxia-reoxygenation, antioxidant capacities remained equally high under normoxia and MRD. Local impacts of environmental conditions on behavioral and physiological traits in the clams seem to be responsible for different population-specific MLSPs. |
author2 |
Dringen, Ralf Abele, Doris |
format |
Doctoral or Postdoctoral Thesis |
author |
Strahl, Julia |
author_facet |
Strahl, Julia |
author_sort |
Strahl, Julia |
title |
Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations |
title_short |
Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations |
title_full |
Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations |
title_fullStr |
Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations |
title_full_unstemmed |
Life strategies in the long-lived bivalve Arctica islandica on a latitudinal climate gradient-Environmental constraints and evolutionary adaptations |
title_sort |
life strategies in the long-lived bivalve arctica islandica on a latitudinal climate gradient-environmental constraints and evolutionary adaptations |
publisher |
Universität Bremen |
publishDate |
2011 |
url |
https://media.suub.uni-bremen.de/handle/elib/125 https://nbn-resolving.org/urn:nbn:de:gbv:46-00101989-19 |
geographic |
Helgoland |
geographic_facet |
Helgoland |
genre |
Arctica islandica Iceland |
genre_facet |
Arctica islandica Iceland |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/125 urn:nbn:de:gbv:46-00101989-19 |
op_rights |
info:eu-repo/semantics/openAccess Bitte wählen Sie eine Lizenz aus: (Unsere Empfehlung: CC-BY) |
op_rightsnorm |
CC-BY |
_version_ |
1766353109293989888 |