The use of larvae or recruits in coral restoration initiatives: <i>Symbiodinium</i> acquisition does not differ between coral life stages in the wild

Quigley, Kate M.; Torda, Gergely; Bay, Line K.

doi:10.1111/rec.12695

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…Chamberland et al 2017). Efforts to collect and deliver captive larvae back to the reef and manipulate larval settlement have so far utilised floating ponds and hoses (Heyward et al 2002, mesh enclosures (dela Cruz & Harrison 2017), tents (Edwards et al 2015), plastic bags (Suzuki et al 2012), foam ring-seeder devices (Cooper et al 2014), and Perspex boxes (Quigley et al 2018b). However, coral restoration programmes targeting entire reefs and reef systems would need to implement such methods at much larger scales than have previously been attempted (Doropoulos et al 2019).…”

Section: Capturing Spawn Slicks For Restorationmentioning

confidence: 99%

Sexual production of corals for reef restoration in the Anthropocene

Randall

Negri

Quigley

et al. 2020

Mar. Ecol. Prog. Ser.

153

147

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Coral-reef ecosystems are experiencing frequent and severe disturbance events that are reducing global coral abundance and potentially overwhelming the natural capacity for reefs to recover. While mitigation strategies for climate warming and other anthropogenic disturbances are implemented, coral restoration programmes are being established worldwide as an additional conservation measure to minimise coral loss and enhance coral recovery. Current restoration efforts predominantly rely on asexually produced coral fragments—a process with inherent practical constraints on the genetic diversity conserved and the spatial scale achieved. Because the resilience of coral communities has hitherto relied on regular renewal with natural recruits, the scaling-up of restoration programmes would benefit from greater use of sexually produced corals, which is an approach that is gaining momentum. Here we review the present state of knowledge of scleractinian coral sexual reproduction in the context of reef restoration, with a focus on broadcast-spawning corals. We identify key knowledge gaps and bottlenecks that currently constrain the sexual production of corals and consider the feasibility of using sexually produced corals for scaling-up restoration to the reef- and reef-system scales.

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Section: Capturing Spawn Slicks For Restorationmentioning

confidence: 99%

Sexual production of corals for reef restoration in the Anthropocene

Randall

Negri

Quigley

et al. 2020

Mar. Ecol. Prog. Ser.

153

147

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“…However, strategies for maximizing the early post-settlement survival of reared and outplanted juveniles need to be advanced. Specifically, efforts to: (1) reduce the risk of predation or competition, (2) promote early, beneficial associations with Symbiodiniaceae, and (3) enhance stress tolerance prior to outplanting can minimize juvenile mortality and strengthen the impact of restoration efforts (Quigley et al 2018).…”

Section: Implications For Reef Restoration and Resiliencementioning

confidence: 99%

“…Various processes may govern symbiont acquisition and selection during early ontogeny (Little et al 2004), but few studies have tracked the biotic and abiotic factors shaping symbiotic partnerships in young Caribbean corals. Indeed, Quigley et al (2018) urged that research be directed at optimizing natural and artificial Symbiodiniaceae delivery to boost juvenile survival.…”

Section: Introductionmentioning

confidence: 99%

Neighboring colonies influence uptake of thermotolerant endosymbionts in threatened Caribbean coral recruits

et al. 2021

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Intervention strategies to enhance coral resilience include manipulating the association between corals and their algal endosymbionts. While hosting thermotolerant Durusdinium trenchii can increase bleaching thresholds in adults, its effects remain largely unknown during the early life stages of Caribbean corals.Here, we tested if Orbicella faveolata recruits could establish symbiosis with D. trenchii supplied by nearby "donor" colonies and examined the resulting ecological trade-offs to evaluate early Symbiodiniaceae manipulation as a scalable tool for reef restoration. We exposed aposymbiotic recruits to 29°C or 31°C and to fragments of either Montastraea cavernosa (containing Cladocopium) or Siderastrea siderea (containing D. trenchii). After 60 days, recruits reared with D. trenchii donors hosted nearly three times more D. trenchii than those with Cladocopium donors, suggesting that recruits can acquire Symbiodiniaceae from nearby corals of different species. Temperature did not affect D. trenchii uptake.Next, donor colonies were removed and surviving recruits were maintained for three months at ambient temperatures, after which a subset was exposed to a 60-day heat stress trial. Recruits previously reared at 31°C survived twice as long at 34°C as those reared at 29°C, suggesting that pre-exposure to heat can prime recruits to withstand future thermal stress. In addition, recruits hosting primarily D. trenchii survived twice as long at 34°C as those hosting little or no D. trenchii. However, the proportion of D.trenchii hosted was negatively correlated with polyp size and symbiont density, indicating a trade-off between growth (of both host and symbiont) and heat tolerance. These findings suggest that, while donor colonies may be effective sources for seeding coral recruits with thermotolerant symbionts, practitioners will need to balance the likely benefits and costs of these approaches when designing restoration strategies.

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Neighboring colonies influence uptake of thermotolerant endosymbionts in threatened Caribbean coral recruits

Williamson

Allen

Williams

et al. 2020

Preprint

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Intervention strategies to enhance coral resilience include manipulating the association between corals and their algal endosymbionts. While hosting thermotolerant Durusdinium trenchii can increase bleaching thresholds in adults, its effects remain largely unknown during the early life stages of Caribbean corals. Here, we tested if Orbicella faveolata recruits could establish symbiosis with D. trenchii supplied by nearby “donor” colonies and examined the resulting ecological trade-offs to evaluate early Symbiodiniaceae manipulation as a scalable tool for reef restoration. We exposed aposymbiotic recruits to 29°C or 31°C and to fragments of either Montastraea cavernosa (containing Cladocopium) or Siderastrea siderea (containing D. trenchii). After 60 days, recruits reared with D. trenchii donors hosted nearly three times more D. trenchii than those with Cladocopium donors, suggesting that recruits can acquire Symbiodiniaceae from nearby corals of different species. Temperature did not affect D. trenchii uptake. Next, donor colonies were removed and surviving recruits were maintained for three months at ambient temperatures, after which a subset was exposed to a 60-day heat stress trial. Recruits previously reared at 31°C survived twice as long at 34°C as those reared at 29°C, suggesting that pre-exposure to heat can prime recruits to withstand future thermal stress. In addition, recruits hosting primarily D. trenchii survived twice as long at 34°C as those hosting little or no D. trenchii. However, the proportion of D. trenchii hosted was negatively correlated with polyp size and symbiont density, indicating a trade-off between growth (of both host and symbiont) and heat tolerance. These findings suggest that, while donor colonies may be effective sources for seeding coral recruits with thermotolerant symbionts, practitioners will need to balance the likely benefits and costs of these approaches when designing restoration strategies.

show abstract

The use of larvae or recruits in coral restoration initiatives: Symbiodinium acquisition does not differ between coral life stages in the wild

Cited by 3 publications

References 19 publications

Sexual production of corals for reef restoration in the Anthropocene

Sexual production of corals for reef restoration in the Anthropocene

Neighboring colonies influence uptake of thermotolerant endosymbionts in threatened Caribbean coral recruits

Neighboring colonies influence uptake of thermotolerant endosymbionts in threatened Caribbean coral recruits

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