Allelopathic effects of macroalgae on Pocillopora acuta coral larvae

Fong, Jim C.; Lim, Zi Wei; Bauman, Andrew G.; Valiyaveettil, Suresh; Liao, Lawrence M.; Yip, Zhi Ting; Todd, Peter A.

doi:10.1016/j.marenvres.2019.06.007

Cited by 24 publications

(27 citation statements)

References 64 publications

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“…was able to impact the coral microbiomes through indirect interactions. The genus Lobophora is known to contain allelopathic chemicals that can harm corals (Vieira et al, 2016;Evensen et al, 2019), including the species in this study (Fong et al, 2019). Crude extracts from Lobophora have also been found to display strong antimicrobial activities (Morrow et al, 2012).…”

Section: Discussionmentioning

confidence: 73%

“…While the allelopathic effects of Lobophora sp. has been established (Fong et al, 2019), it remains unclear what role the algal microbiome may have played in the strong response of the coral microbiomes to the presence of Lobophora sp., particularly given that the M. stellata colonies and Lobophora sp. were collected from two different reefs.…”

Section: Discussionmentioning

confidence: 99%

“…DNA barcode analysis revealed that the Lobophora sp. studied here is an undescribed species, with its closest sister species being an undescribed Lobophora species from Oman (see Fong et al, 2019).…”

Section: Corals and Macroalgae Collectionmentioning

confidence: 99%

“…Specifically, we compared how the effect of macroalgae on corals differed between direct contact and indirect, water-mediated interactions between a brown alga Lobophora sp. from a genus previously shown to be allelopathic (Morrow et al, 2011;Evensen et al, 2019;Fong et al, 2019), and a putatively non-allelopathic red alga Hypnea pannosa, on three common coral species in Singapore (Merulina ampliata, Montipora stellata, and Pocillopora acuta).…”

Section: Introductionmentioning

confidence: 99%

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Contact- and Water-Mediated Effects of Macroalgae on the Physiology and Microbiome of Three Indo-Pacific Coral Species

et al. 2020

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Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Section: Corals and Macroalgae Collectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contact- and Water-Mediated Effects of Macroalgae on the Physiology and Microbiome of Three Indo-Pacific Coral Species

et al. 2020

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“…Algal turfs often accumulate sediments, and sediments are known to inhibit settlement and reduce post-settlement survival (Birrell, McCook, Willis, & Diáz-Pulido, 2008). Although little is known about the chemical effects of algae on coral recruitment, it is been suggested that allelopathy by filamentous alga can kill Porites tissue (Jompa & McCook, 2003a, 2003b and cause larval mortality of Pocillopora acuta (Fong et al, 2019). Miller (2014 observed between 0 and 46 % survivorship for O. faveolata settlers over 5-6 weeks in a field environment (this was on less-colonized substrates compared to our study).…”

Section: Discussionmentioning

confidence: 99%

Early life history of the Caribbean coral Orbicella faveolata (Scleractinia: Merulinidae)

Alvarado-Chacón¹,

Gómez-Lemos²,

Sierra-Sabalza

et al. 2020

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Abstract. Introduction: Rehabilitation of hermatypic coral species that have declined in the Caribbean in recent decades is a priority. Production of sexual recruits is considered the best restoration method to aid affected populations. Objective: To gain knowledge of early life stages of Orbicella faveolata and to enhance production of new sexual recruits. Methods: Gamete bundles from the coral species O. faveolata were collected over three years (2016, 2018, and 2019) from Los Corales del Rosario y de San Bernardo Natural National Park, Cartagena, Colombia. Assisted fertilization, larval rearing, settlement (onto crustose coralline algae, CCA) and post settlement survival in laboratory conditions were monitored. Results: Embryonic and larval development were documented over 55 hours after the first cleavage, when larvae were fully developed and started pre-settlement behavior. Settlement began 7 days after first cleavage and after 37 days polyps had acquired zooxanthellae. Larval settlement was higher on Lythophyllum congestum and Titanoderma prototypum than in response to Porolithon pachydermum, Neogoniolithon sp., Hydrolithon sp., and Lythophyllum sp. Larvae did not settle on dead coral or on the negative control (sterilized seawater). After the first week post settlement survival was 59 % amongst O. faveolata recruits. During the second week, survival dropped to 42 %, and was further reduced to 0 % at the end of the third week. Conclusions: O. faveolata larvae require cues from certain CCA species to settle, they do not settle in absence of CCA. Increased larvae availability is possible through assisted fertilization in the laboratory, however, due to the high mortality in early post-settlement phases, additional research needs to be conducted in order to scale up larvae production and improve understanding of the cues that enhance settlement and the factors which cause post-settlement mortality.

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