Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculus
The green-lipped mussel Perna canaliculus is critically important to the New Zealand aquaculture industry. However, the rise in marine heatwave (MHW) events poses an emerging threat to this industry through summer mortality events. This study investigated the potential for paternally mediated transg...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Inter-Research
2024-02-01
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| Series: | Aquaculture Environment Interactions |
| Online Access: | https://www.int-res.com/abstracts/aei/v16/p43-57/ |
| _version_ | 1797214436099883008 |
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| author | LC Kozal GE Hofmann NA Hawes NLC Ragg |
| author_facet | LC Kozal GE Hofmann NA Hawes NLC Ragg |
| author_sort | LC Kozal |
| collection | DOAJ |
| description | The green-lipped mussel Perna canaliculus is critically important to the New Zealand aquaculture industry. However, the rise in marine heatwave (MHW) events poses an emerging threat to this industry through summer mortality events. This study investigated the potential for paternally mediated transgenerational plasticity to improve offspring performance under heat stress. We simulated a week-long MHW event, exposing male P. canaliculus broodstock to elevated (22°C) or ambient (17.5°C) temperatures immediately prior to spawning, and evaluated the effects of paternal heat exposure on successful development, size and acute thermal tolerance of their larvae that were also reared under ambient or elevated (20°C) temperatures through to completion of the lecithotrophic trochophore stage. Elevated paternal and larval temperatures both increased incidence of abnormal development, reducing larval yield, while initial D-veliger shell length was predominantly influenced by developmental temperature, with longer shells formed at 20°C. Veligers from heat-exposed fathers raised under 20°C showed a small, but significant, elevation in lethal tolerance 50 (LT50), the temperature at which 50% of the larvae are predicted to die, when exposed to an additional 1 h heat-shock. These results indicate that paternal heat exposure over a relatively short period can influence offspring performance in this species. The paternal exposure investigated showed limited positive effects on offspring thermal tolerance, which may be outweighed by the negative impact on larval development. As MHWs are forecasted to continue accelerating, understanding transgenerational effects of heat stress will be critical for maintaining high-quality hatchery yields through broodstock selection and may inform wild population forecasting models. |
| first_indexed | 2024-04-24T11:14:08Z |
| format | Article |
| id | doaj.art-953f8c80cf314d038f02f5ccd7bff0e3 |
| institution | Directory Open Access Journal |
| issn | 1869-215X 1869-7534 |
| language | English |
| last_indexed | 2024-04-24T11:14:08Z |
| publishDate | 2024-02-01 |
| publisher | Inter-Research |
| record_format | Article |
| series | Aquaculture Environment Interactions |
| spelling | doaj.art-953f8c80cf314d038f02f5ccd7bff0e32024-04-11T09:59:45ZengInter-ResearchAquaculture Environment Interactions1869-215X1869-75342024-02-0116435710.3354/aei00472Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculusLC Kozal0GE Hofmann1NA Hawes2NLC Ragg3Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA 93106, USADepartment of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA 93106, USAShellfish Production and Technology New Zealand Ltd. (SPATnz), Nelson 7047, New ZealandCawthron Institute, Nelson 7042, New ZealandThe green-lipped mussel Perna canaliculus is critically important to the New Zealand aquaculture industry. However, the rise in marine heatwave (MHW) events poses an emerging threat to this industry through summer mortality events. This study investigated the potential for paternally mediated transgenerational plasticity to improve offspring performance under heat stress. We simulated a week-long MHW event, exposing male P. canaliculus broodstock to elevated (22°C) or ambient (17.5°C) temperatures immediately prior to spawning, and evaluated the effects of paternal heat exposure on successful development, size and acute thermal tolerance of their larvae that were also reared under ambient or elevated (20°C) temperatures through to completion of the lecithotrophic trochophore stage. Elevated paternal and larval temperatures both increased incidence of abnormal development, reducing larval yield, while initial D-veliger shell length was predominantly influenced by developmental temperature, with longer shells formed at 20°C. Veligers from heat-exposed fathers raised under 20°C showed a small, but significant, elevation in lethal tolerance 50 (LT50), the temperature at which 50% of the larvae are predicted to die, when exposed to an additional 1 h heat-shock. These results indicate that paternal heat exposure over a relatively short period can influence offspring performance in this species. The paternal exposure investigated showed limited positive effects on offspring thermal tolerance, which may be outweighed by the negative impact on larval development. As MHWs are forecasted to continue accelerating, understanding transgenerational effects of heat stress will be critical for maintaining high-quality hatchery yields through broodstock selection and may inform wild population forecasting models.https://www.int-res.com/abstracts/aei/v16/p43-57/ |
| spellingShingle | LC Kozal GE Hofmann NA Hawes NLC Ragg Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculus Aquaculture Environment Interactions |
| title | Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculus |
| title_full | Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculus |
| title_fullStr | Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculus |
| title_full_unstemmed | Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculus |
| title_short | Paternal heat exposure affects progeny larval development in green-lipped mussels Perna canaliculus |
| title_sort | paternal heat exposure affects progeny larval development in green lipped mussels perna canaliculus |
| url | https://www.int-res.com/abstracts/aei/v16/p43-57/ |
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