Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential
Abstract 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 extreme), using a microcosm facility. P. simulans survived (100%) to all...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2018-02-01
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| Series: | Genetics and Molecular Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018005002105&lng=en&tlng=en |
| _version_ | 1819123038594007040 |
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| author | Luciana Mara Fé Gonçalves Maria de Nazaré Paula da Silva Adalberto Luis Val Vera Maria Fonseca de Almeida-Val |
| author_facet | Luciana Mara Fé Gonçalves Maria de Nazaré Paula da Silva Adalberto Luis Val Vera Maria Fonseca de Almeida-Val |
| author_sort | Luciana Mara Fé Gonçalves |
| collection | DOAJ |
| description | Abstract 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 extreme), 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. |
| first_indexed | 2024-12-22T07:02:00Z |
| format | Article |
| id | doaj.art-5280debddc3044c69ba8a31dd6c2abb4 |
| institution | Directory Open Access Journal |
| issn | 1678-4685 |
| language | English |
| last_indexed | 2024-12-22T07:02:00Z |
| publishDate | 2018-02-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-5280debddc3044c69ba8a31dd6c2abb42022-12-21T18:34:47ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1678-46852018-02-01010.1590/1678-4685-gmb-2017-0016S1415-47572018005002105Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potentialLuciana Mara Fé GonçalvesMaria de Nazaré Paula da SilvaAdalberto Luis ValVera Maria Fonseca de Almeida-ValAbstract 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 extreme), 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018005002105&lng=en&tlng=enornamental fishenzyme activityrelative gene expressionIPCC scenariosLactate Dehydrogenase (Ldh) |
| spellingShingle | Luciana Mara Fé Gonçalves Maria de Nazaré Paula da Silva Adalberto Luis Val Vera Maria Fonseca de Almeida-Val Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential Genetics and Molecular Biology ornamental fish enzyme activity relative gene expression IPCC scenarios Lactate Dehydrogenase (Ldh) |
| title | Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential |
| title_full | Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential |
| title_fullStr | Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential |
| title_full_unstemmed | Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential |
| title_short | Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential |
| title_sort | differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential |
| topic | ornamental fish enzyme activity relative gene expression IPCC scenarios Lactate Dehydrogenase (Ldh) |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018005002105&lng=en&tlng=en |
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