The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event Scenario
Global aquaculture growth will most probably face specific conditions derived from climate change. In fact, the most severe impacts of these changes will be suffered by aquatic populations in restrictive circumstances, such as current aquaculture locations, which represent a perfect model to study g...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/14/5/778 |
| _version_ | 1797264930792013824 |
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| author | Ignacio Fernández Ana M. Larrán Paulino de Paz Marta F. Riesco |
| author_facet | Ignacio Fernández Ana M. Larrán Paulino de Paz Marta F. Riesco |
| author_sort | Ignacio Fernández |
| collection | DOAJ |
| description | Global aquaculture growth will most probably face specific conditions derived from climate change. In fact, the most severe impacts of these changes will be suffered by aquatic populations in restrictive circumstances, such as current aquaculture locations, which represent a perfect model to study global warming effects. Although the impact of temperature on fish reproduction has been characterized in many aspects, this study was focused on recreating more realistic models of global warming, particularly considering heatwave phenomena, in order to decipher its effects on male gametes (spermatozoa). For this purpose, thermal stress via a heatwave simulation (mimicking a natural occurring heatwave, from 24 to 30 °C) was induced in adult tench (<i>Tinca tinca</i>) males and compared with a control group (55.02 ± 16.44 g of average body wet weight). The impact of the thermal stress induced by this climate change event was assessed using cellular and molecular approaches. After the heatwave recreation, a multiparametric analysis of sperm quality, including some traditional parameters (such as sperm motility) and new ones (focus on redox balance and sperm quality biomarkers), was performed. Although sperm concentration and the volume produced were not affected, the results showed a significant deleterious effect on motility parameters (e.g., reduced progressive motility and total motility during the first minute post-activation). Furthermore, the sperm produced under the thermal stress induced by this heatwave simulation exhibited an increased ROS content in spermatic cells, confirming the negative effect that this thermal stress model (heatwave recreation) might have had on sperm quality. More importantly, the expression of some known sperm quality and fertilization markers was decreased in males exposed to thermal stress. This present study not only unveils the potential effects of climate change in contemporary and future fish farming populations (and their underlying mechanisms) but also provides insights on how to mitigate and/or avoid thermal stress due to heatwave events. |
| first_indexed | 2024-04-25T00:36:44Z |
| format | Article |
| id | doaj.art-a1a2cae1bce545c3869de18007bc3093 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-04-25T00:36:44Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-a1a2cae1bce545c3869de18007bc30932024-03-12T16:38:17ZengMDPI AGAnimals2076-26152024-03-0114577810.3390/ani14050778The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event ScenarioIgnacio Fernández0Ana M. Larrán1Paulino de Paz2Marta F. Riesco3Spanish Institute of Oceanography (IEO-CSIC), Centro Oceanográfico de Vigo, Subida a Radio Faro nº 52, 36390 Vigo, SpainAquaculture Research Center, Agro-Technological Institute of Castilla y León (ITACyL), Ctra. Arévalo, Zamarramala, 40196 Segovia, SpainCell Biology Area, Department of Molecular Biology, Universidad de León, Campus de Vegazana, sn, 24071 León, SpainCell Biology Area, Department of Molecular Biology, Universidad de León, Campus de Vegazana, sn, 24071 León, SpainGlobal aquaculture growth will most probably face specific conditions derived from climate change. In fact, the most severe impacts of these changes will be suffered by aquatic populations in restrictive circumstances, such as current aquaculture locations, which represent a perfect model to study global warming effects. Although the impact of temperature on fish reproduction has been characterized in many aspects, this study was focused on recreating more realistic models of global warming, particularly considering heatwave phenomena, in order to decipher its effects on male gametes (spermatozoa). For this purpose, thermal stress via a heatwave simulation (mimicking a natural occurring heatwave, from 24 to 30 °C) was induced in adult tench (<i>Tinca tinca</i>) males and compared with a control group (55.02 ± 16.44 g of average body wet weight). The impact of the thermal stress induced by this climate change event was assessed using cellular and molecular approaches. After the heatwave recreation, a multiparametric analysis of sperm quality, including some traditional parameters (such as sperm motility) and new ones (focus on redox balance and sperm quality biomarkers), was performed. Although sperm concentration and the volume produced were not affected, the results showed a significant deleterious effect on motility parameters (e.g., reduced progressive motility and total motility during the first minute post-activation). Furthermore, the sperm produced under the thermal stress induced by this heatwave simulation exhibited an increased ROS content in spermatic cells, confirming the negative effect that this thermal stress model (heatwave recreation) might have had on sperm quality. More importantly, the expression of some known sperm quality and fertilization markers was decreased in males exposed to thermal stress. This present study not only unveils the potential effects of climate change in contemporary and future fish farming populations (and their underlying mechanisms) but also provides insights on how to mitigate and/or avoid thermal stress due to heatwave events.https://www.mdpi.com/2076-2615/14/5/778thermal stressaquaculturegerm cellROSSODGPx |
| spellingShingle | Ignacio Fernández Ana M. Larrán Paulino de Paz Marta F. Riesco The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event Scenario Animals thermal stress aquaculture germ cell ROS SOD GPx |
| title | The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event Scenario |
| title_full | The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event Scenario |
| title_fullStr | The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event Scenario |
| title_full_unstemmed | The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event Scenario |
| title_short | The Direct Effects of Climate Change on Tench (<i>Tinca tinca</i>) Sperm Quality under a Real Heatwave Event Scenario |
| title_sort | direct effects of climate change on tench i tinca tinca i sperm quality under a real heatwave event scenario |
| topic | thermal stress aquaculture germ cell ROS SOD GPx |
| url | https://www.mdpi.com/2076-2615/14/5/778 |
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