Chemical and physical defenses of Singapore gorgonians (Octocorallia: Gorgonacea)

Koh, L. L.; Goh, Nicholette; Chou, Loke Ming; Tan, Y.W.

doi:10.1016/s0022-0981(00)00207-0

Cited by 37 publications

(26 citation statements)

References 16 publications

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“…Organic extracts of gorgonians do not appear to have strong antimicrobial activity against marine bacteria (Jensen et al 1996). The most common hypothesis is that secondary metabolites are anti-predatory agents, and studies have consistently demonstrated antipredatory properties of gorgonian crude extracts and purified compounds (Pawlik et al 1987, Fenical & Pawlik 1991, Pawlik & Fenical 1992, Maia et al 1999, Koh et al 2000.…”

Section: Abstract: Gorgonian · Chemical Defense · Physical Defense ·mentioning

confidence: 99%

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A reappraisal of the chemical and physical defenses of Caribbean gorgonian corals against predatory fishes

O'Neal¹,

Pawlik²

2002

Mar. Ecol. Prog. Ser.

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Section: Abstract: Gorgonian · Chemical Defense · Physical Defense ·mentioning

confidence: 99%

“…In a recent survey, 100% of the organic extracts from 65 Indo-Pacific gorgonians deterred predation by a generalist predator (Eve 2001). Additionally, Koh et al (2000) found that crude organic extracts from 8 species of Singapore gorgonians were deterrent in laboratory assays.…”

Section: Do the Organic Extracts Or Sclerites Of Caribbean Gorgoniansmentioning

confidence: 99%

A reappraisal of the chemical and physical defenses of Caribbean gorgonian corals against predatory fishes

O'Neal¹,

Pawlik²

2002

Mar. Ecol. Prog. Ser.

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“…Lindquiest et al [75] and [76], for example, reported that sclerites associated with ascidians and sponges were palatable. The length, shape, and density/concentration of sclerites may determine whether they are used to deter predation [77,78]. In the gorgonian Briareum asbestinum, long sclerites were less palatable to predators than short sclerites [78].…”

Section: Hypothesis 4: Sclerites Of Paragorgia Arborea Serve a Role Imentioning

confidence: 99%

“…The length, shape, and density/concentration of sclerites may determine whether they are used to deter predation [77,78]. In the gorgonian Briareum asbestinum, long sclerites were less palatable to predators than short sclerites [78]. In DSCs, sclerite morphology has not been examined with respect to predator avoidance.…”

Section: Hypothesis 4: Sclerites Of Paragorgia Arborea Serve a Role Imentioning

confidence: 99%

Compounds from Deep-Sea Bubblegum Corals, Paragorgia arborea, Elicit Anti-Predation Behavior in Fish

Strychar¹

2011

TOMBJ

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Bubble-gum corals (Paragorgia spp.) appear to lack predators common to many other deep-sea corals. The aim of this study was to determine whether compounds from red and white colored bubble-gum coral Paragorgia arborea (Linnaeus, 1758) from different geographical locations inhibit predation or elicit different behavioral responses. We extracted secondary metabolites from red and white colonies of P. arborea, incorporating different concentrations of the compounds into feeding pellets, and offered these to pinfish Lagodon rhomboides (Linnaeus, 1766) in behavioral feeding assays. Red-colored P. arborea produced a lipophilic compound which at high concentrations stimulated defensive responses, however, lipophilic compounds from white coral colonies did not produce significant defensive behavioral responses by fish. Water-soluble and extracted sclerites elicited no behavioral effects from L. rhomboides.

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“…In the marine environment, the success of defense used by soft corals and gorgonians against consumers and competitors has been attributed to their production of secondary metabolites, many of which show predator deterrence and allelopathic activities (COLL et al, 1982;PAWLIK et al, 1987;VAN ALSTYNE et al, 1994;KELMAN et al, 1999;KOH et al, 2000;LAGES et al, 2006;CHANGYUN et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Chemical composition and release in situ due to injury of the invasive coral tubastraea (Cnidaria, Scleractinia)

et al. 2010

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A B S T R A C TDefensive chemistry may be used against consumers and competitors by invasive species as a strategy for colonization and perpetuation in a new area. There are relatively few studies of negative chemical interactions between scleratinian corals. This study characterizes the secondary metabolites in the invasive corals Tubastraea tagusensis and T. coccinea and relates these to an in situ experiment using a submersible apparatus with Sep-Paks ® cartridges to trap substances released by T. tagusensis directly from the sea-water. Colonies of Tubastraea spp were collected in Ilha Grande Bay, RJ, extracted with methanol (MeOH), and the extracts washed with hexane, dichloromethane (DCM) and methanol, and analyzed by GC/MS. Methyl stearate and methyl palmitate were the major components of the hexane and hexane:MeOH fractions, while cholesterol was the most abundant in the DCM and DCM:MeOH fractions from Tubastraea spp. The organic material retained in SepPaks ® cartridges was tentatively identified as hydrocarbons. There was a significant difference between treatments and controls for 1-hexadecene, n-hexadecane and n-eicosane contents. The production of defensive substances by the invasive corals may be a threat to the benthic communities of the region, which include endemic species. R E S U M OSubstâncias químicas de defesa contra consumidores e competidores podem ser usadas por espécies invasoras marinhas como estratégia de colonização e perpetuação em novo ambiente. Entretanto, há poucos estudos experimentais que demonstrem as possíveis interações negativas entre corais escleractínios. Este trabalho tem como objetivo caracterizar os metabólitos secundários dos corais invasores Tubastraea tagusensis e T. coccinea; avaliar através da técnica de amostragem in situ quais são as substâncias de T. tagusensis liberadas na água do mar, com o auxílio de aparelho subaquático com colunas Sep-Paks ® . Colônias dos corais invasores Tubastraea spp foram coletadas na Baía de Ilha Grande, RJ, e extraídas com MeOH. Os extratos foram submetidos à eluições com hexano, DCM e MeOH, e analisados por CG-EM. Estearato de metila e palmitato de metila foram as substâncias majoritárias das frações hexânicas e hexano: DCM, enquanto o colesterol foi a substância mais abundante das frações DCM e DCM:MeOH de Tubastraea spp. O material orgânico retido nas colunas Sep-Paks ® foi identificado como hidrocarbonetos. Diferenças significativas entre controle e tratamento foram relacionadas a diferentes quantidades de 1-hexadeceno, n-hexadecano e n-eicosano. A produção de substâncias de defesas em Tubastraea spp permite especular sobre a ameaça que estes corais invasores representam para as comunidades bentônicas da Ilha Grande.

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Chemical and physical defenses of Singapore gorgonians (Octocorallia: Gorgonacea)

Cited by 37 publications

References 16 publications

A reappraisal of the chemical and physical defenses of Caribbean gorgonian corals against predatory fishes

A reappraisal of the chemical and physical defenses of Caribbean gorgonian corals against predatory fishes

Compounds from Deep-Sea Bubblegum Corals, Paragorgia arborea, Elicit Anti-Predation Behavior in Fish

Chemical composition and release in situ due to injury of the invasive coral tubastraea (Cnidaria, Scleractinia)

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