The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature Conditions
The increasing atmospheric CO<sub>2</sub> concentrations and warming of marine waters have encouraged experiments on multi-stressor interactions in marine organisms. We conducted a multigenerational experiment to assess reproductive capacities regarding egg production in calanoid copepod...
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MDPI AG
2023-06-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/13/13/2160 |
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| author | Montaha Behbehani Saif Uddin Nazima Habibi Hanan A. Al-Sarawi Yousef Al-enezi |
| author_facet | Montaha Behbehani Saif Uddin Nazima Habibi Hanan A. Al-Sarawi Yousef Al-enezi |
| author_sort | Montaha Behbehani |
| collection | DOAJ |
| description | The increasing atmospheric CO<sub>2</sub> concentrations and warming of marine waters have encouraged experiments on multi-stressor interactions in marine organisms. We conducted a multigenerational experiment to assess reproductive capacities regarding egg production in calanoid copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under different pH and temperature conditions. The experimental set-up allowed assessing the tandem effect of warming and acidification on the number of eggs produced by healthy copepod pairs under two pH conditions of 8.20 and 7.50 (hard selection) as well as with a gradual reduction of 0.05 pH units at each generation (soft selection). The results are quite interesting, with very diverse performance across temperatures. The number of eggs produced under hard selection was higher at pH 8.20 compared to pH 7.50 for both species, with the maximum number of eggs produced at 24–28 °C, whereas under soft selection, there was no significant difference in the egg production rate at 24–28 °C across generations and there was an improvement in the number of eggs produced at 8–16 °C. The results provide evidence that in a future ocean scenario of lower pH and higher temperature, the two species, and possibly the copepod population at large, might not decrease. Copepod populations might be resilient, and the transcriptomic evidence of adaptation to increased temperature and lower pH is a ray of hope. We believe further studies are needed to provide more robust datasets to underpin the hypothesis of adaptation to climate change. |
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| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-11T01:48:34Z |
| publishDate | 2023-06-01 |
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| series | Animals |
| spelling | doaj.art-eedb248a46e1448cb64e79d6ff4f2fef2023-11-18T16:03:51ZengMDPI AGAnimals2076-26152023-06-011313216010.3390/ani13132160The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature ConditionsMontaha Behbehani0Saif Uddin1Nazima Habibi2Hanan A. Al-Sarawi3Yousef Al-enezi4Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Safat 13109, KuwaitEnvironment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Safat 13109, KuwaitEnvironment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Safat 13109, KuwaitEnvironment Public Authority, Al Shuwaikh 13104, KuwaitEnvironment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Safat 13109, KuwaitThe increasing atmospheric CO<sub>2</sub> concentrations and warming of marine waters have encouraged experiments on multi-stressor interactions in marine organisms. We conducted a multigenerational experiment to assess reproductive capacities regarding egg production in calanoid copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under different pH and temperature conditions. The experimental set-up allowed assessing the tandem effect of warming and acidification on the number of eggs produced by healthy copepod pairs under two pH conditions of 8.20 and 7.50 (hard selection) as well as with a gradual reduction of 0.05 pH units at each generation (soft selection). The results are quite interesting, with very diverse performance across temperatures. The number of eggs produced under hard selection was higher at pH 8.20 compared to pH 7.50 for both species, with the maximum number of eggs produced at 24–28 °C, whereas under soft selection, there was no significant difference in the egg production rate at 24–28 °C across generations and there was an improvement in the number of eggs produced at 8–16 °C. The results provide evidence that in a future ocean scenario of lower pH and higher temperature, the two species, and possibly the copepod population at large, might not decrease. Copepod populations might be resilient, and the transcriptomic evidence of adaptation to increased temperature and lower pH is a ray of hope. We believe further studies are needed to provide more robust datasets to underpin the hypothesis of adaptation to climate change.https://www.mdpi.com/2076-2615/13/13/2160acidificationglobal warmingexperimentscarbon dioxidereproductive capacitieseggs |
| spellingShingle | Montaha Behbehani Saif Uddin Nazima Habibi Hanan A. Al-Sarawi Yousef Al-enezi The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature Conditions Animals acidification global warming experiments carbon dioxide reproductive capacities eggs |
| title | The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature Conditions |
| title_full | The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature Conditions |
| title_fullStr | The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature Conditions |
| title_full_unstemmed | The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature Conditions |
| title_short | The Reproductive Capacities of the Calanoid Copepods <i>Parvocalanus crassirostis</i> and <i>Acartia pacifica</i> under Different pH and Temperature Conditions |
| title_sort | reproductive capacities of the calanoid copepods i parvocalanus crassirostis i and i acartia pacifica i under different ph and temperature conditions |
| topic | acidification global warming experiments carbon dioxide reproductive capacities eggs |
| url | https://www.mdpi.com/2076-2615/13/13/2160 |
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