Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential

Autor: Maria de Nazaré Paula da Silva, Vera Maria Fonseca de Almeida-Val, Adalberto Luis Val, Luciana Mara Fé Gonçalves
Rok vydání: 2018
Předmět:
Adult
0301 basic medicine
lcsh:QH426-470
Survival
010504 meteorology & atmospheric sciences
Climate Change
Anaerobic Glycolysis
Gene Expression
Paracheirodon Axelrodi
Zoology
Survivorship
01 natural sciences
Acclimatization
03 medical and health sciences
chemistry.chemical_compound
Survivorship curve
Lactate dehydrogenase
Ornamental plant
Environmental Temperature
Genetics
Gene Activation
Paracheirodon
Controlled Study
Paracheirodon Simulans
Molecular Biology
Phylogeny
0105 earth and related environmental sciences
IPCC scenarios
Energy
relative gene expression
biology
Characidae
Lactate Dehydrogenase (Ldh)
Lactate Dehydrogenase
ornamental fish
Environmental Exposure
Carbon Dioxide
Nonhuman
biology.organism_classification
enzyme activity
lcsh:Genetics
030104 developmental biology
chemistry
Anaerobic glycolysis
Microhabitat
Microcosm
Animal Genetics
Anaerobic exercise
Zdroj: Genetics and Molecular Biology
Genetics and Molecular Biology, Issue: ahead, Published: 19 FEB 2018
Genetics and Molecular Biology, Volume: 41, Issue: 1, Pages: 107-118, Published: 19 FEB 2018
Genetics and Molecular Biology v.41 n.1 2018
Sociedade Brasileira de Genética (SBG)
instacron:SBG
Repositório Institucional do INPA
Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
Genetics and Molecular Biology, Iss 0 (2018)
ISSN: 1678-4685
1415-4757
DOI: 10.1590/1678-4685-gmb-2017-0016
Popis: 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.
Databáze: OpenAIRE
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