دورية أكاديمية
Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential
| العنوان: | Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential |
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| المؤلفون: | Gonçalves, Luciana Mara Fé, Silva, Maria de Nazaré Paula da, Val, Adalberto Luis, Almeida-Val, Vera Maria Fonseca |
| بيانات النشر: | Genetics and Molecular Biology |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Carbon Dioxide, Lactate Dehydrogenase, Adult, Anaerobic Glycolysis, Characidae, Climate Change, Controlled Study, Energy, Environmental Exposure, Environmental Temperature, Enzyme Activity, Gene Activation, Gene Expression, Microhabitat, Nonhuman, Ornamental Fish, Paracheirodon Axelrodi, Paracheirodon Simulans, Phylogeny, Survival, Survivorship |
| الوصف: | Two Amazonian closely related tetras – cardinal Paracheirodon axelrodi and green neon P. simulans – were artificially acclimatized to environmental chambers mimicking future climate change scenarios (mild, moderate and ex-treme), using a microcosm facility. P. simulans survived (100%) to all scenarios after 30 days exposure, while P. axelrodi presented decreasing survival percentages according to environmental severity. These differences may be the reflection of distinct natural acclimatization to microhabitats between the species, which differ in thermal conditions. Survival responses might be related to differences in relative gene expression of lactate dehydrogenase (Ldh), suggesting that P. axelrodi anaerobic potential is lower or non-existent compared to P. simulans, not tolerating long-term thermal challenges. Accordingly, increases in temperature and in CO2 levels caused increases in energy demand and resulted in activation of the anaerobic pathway, as demonstrated by the higher enzyme levels measured in head and tail portions of both species. Sustained anaerobic glycolysis is possible when fish live in challenging environments (low oxygen or high temperature). Our results clearly show that P. simulans has a larger scope for survival to higher energy demands due to its increased anaerobic potential compared to P. axelrodi. © 2018, Sociedade Brasileira de Genética. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | Volume 41, Número 1, Pags. 107-118; https://repositorio.inpa.gov.br/handle/1/14974Test |
| DOI: | 10.1590/1678-4685-gmb-2017-0016 |
| الإتاحة: | https://doi.org/10.1590/1678-4685-gmb-2017-0016Test https://repositorio.inpa.gov.br/handle/1/14974Test |
| حقوق: | Attribution-NonCommercial-NoDerivs 3.0 Brazil ; http://creativecommons.org/licenses/by-nc-nd/3.0/brTest/ |
| رقم الانضمام: | edsbas.F2FA4CF9 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1590/1678-4685-gmb-2017-0016 |
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