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Trophic provisioning and parental trade-offs lead to successful reproductive performance in corals after a bleaching event
Rodrigues, L.J.; Padilla-Gamiño, J.L. (2022). Trophic provisioning and parental trade-offs lead to successful reproductive performance in corals after a bleaching event. NPG Scientific Reports 12(1): 18702 . https://dx.doi.org/10.1038/s41598-022-21998-4
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322
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| Trefwoorden |
Montipora capitata (Dana, 1846) [WoRMS]; Porites compressa Dana, 1846 [WoRMS]
Marien/Kust |
| Auteurs | | Top |
- Rodrigues, L.J.
- Padilla-Gamiño, J.L.
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| Abstract |
Warming ocean temperatures are severely compromising the health and resilience of coral reefs worldwide. Coral bleaching can affect coral physiology and the energy available for corals to reproduce. Mechanisms associated with reproductive allocation in corals are poorly understood, especially after a bleaching event occurs. Using isotopic labeling techniques, we traced the acquisition and allocation of carbon from adults to gametes by autotrophy and heterotrophy in previously bleached and non-bleached Montipora capitata and Porites compressa corals. Experiments revealed that both species: (1) relied only on autotrophy to allocate carbon to gametes, while heterotrophy was less relied upon as a carbon source; (2) experienced a trade-off with less carbon available for adult tissues when provisioning gametes, especially when previously bleached; and (3) used different strategies for allocating carbon to gametes. Over time, M. capitata allocated 10% more carbon to gametes despite bleaching by limiting the allocation of carbon to adult tissues, with 50–80% less carbon allocated to bleached compared to non-bleached colonies. Over the same time period, P. compressa maintained carbon allocation to adult tissues, before allocating carbon to gametes. Our study highlights the importance of autotrophy for carbon allocation from adult corals to gametes, and species-specific differences in carbon allocation depending on bleaching susceptibility. |
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