Organohalogen constituents of the acorn worm Ptychodera bahamensis

Corgiat, Jay M.; Dobbs, Fred C.; Burger, Mike W.; Scheuer, Paul J.

doi:10.1016/0305-0491(93)90011-s

Cited by 6 publications

(6 citation statements)

References 16 publications

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“…Mediomastus ambiseta, Heteromastus filiformis, Streblospio benedicti, and Tharyx marionl] (Knowlton 1993). These species, and others from this study, can form extensive, dense beds of individuals in many of the world's coastal benthic habitats (Hyman 1959, Gibbs 1971, Grassle & Grassle 1974, Buhr 1976, Peterson & Peterson 1979, Higa & Sakemi 1983, Shaffer 1983, Levin 1984, Steward et al 1992, Corgiat et al 1993, Woodin et al 1993, King et al 1994, including haloaromatic-containing sediments surrounding pulp mills which use chlorine as a bleaching agent (Pearson & Rosenberg 1978). Our primary message herein is to alert marine ecologists, toxicologists, and environmental chemists to the occurrence of these natural halogenated compounds in manne taxa commonly sampled in both anthropogenicaUy impacted and pristine study sites.…”

Section: Discussionmentioning

confidence: 99%

Widespread occurrence of natural halogenated organics among temperate marine infauna

Fielman¹,

Woodin²,

Walla³

et al. 1999

Mar. Ecol. Prog. Ser.

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Despite the global prevalence of marine sedimentary habitats, the potential for chemically mediated ecological interactions within these assemblages remains poorly known. Using GUMS, we examined methanol extracts of worm, mollusc, and crustacean macroinfauna from 2 local intertidal sandflat communities for volatile organohalogens, a common, often bioactive class of secondary metabolites from marine organisms. Halogenated compounds were newly identified from 11 common polychaete species in the farnil~es Capitellidae, Chaetopteridae, Cirratulidae, Glyceridae, Pectinarudae and Spionidae. Tentative structures of these halometabolites are proposed based on G U M S data. The represented chemical classes included aromatic mono-and dibrominated hydroxyphenylpropanoids, nitrogen-containing bromoalkylpyrroles, as well as brominated and chlorinated hydrocarbons and sulfides. Among the molluscs, only Terebra dislocata (Prosobranchia) contained an organohalogen compound (2,6-dibromophenol), which is likely derived from its diet of hemichordate worms. Volatile haloorganics were not found in amphipod and nemertean taxa. Possession of these compounds was not a function of any particular phylum, size categorization, or trophic mode, although hemichordates and all Capitellid and Spionid polychaetes collected at these sites invariably contained halocompounds. Most (40 of ca 54 taxa) of the numerically dominant macroinfaunal taxa at these 2 sites were examined in this survey; of these, 4 3 % contained halometabolites, including the broadly distributed species Mediomastus arnbiseta, Heteromastus filiformis, Streblospio benedicti, Thary.~ marioni, and Saccoglossus kowalevskii. Thus, the potential for widespread occurrence of halogenated compounds among infauna is great. The presence of organohalogens in many common and abundant polychaete species suggests a general biological significance for these metabolites, a result of potential interest to marine ecologists, toxicologists and environmental chemists.

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Section: Discussionmentioning

confidence: 99%

Widespread occurrence of natural halogenated organics among temperate marine infauna

Fielman¹,

Woodin²,

Walla³

et al. 1999

Mar. Ecol. Prog. Ser.

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“…Numerous volatile halogenated organic compounds have been described from many marine organisms, including sponges, polychaetes, phoronids, enteropneusts, algae and bacteria (see Neidleman & Geigert 1986, Corgiat et al 1993, King et al 1995. A variety of functions have been proposed for these compounds, including predation deterrence (Prezant et al 1981, Woodin et al 1987), microbial control (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of naturally occurring bromophenols on sulfate reduction and ammonia oxidation in intertidal sediments

Giray¹,

Gm²

1997

Aquat. Microb. Ecol.

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We examined the effect on ammonium oxidation and sulfate reduction of several brominated compounds 14-bromophenol, 2,4-dibromophenol (2,4-DBP), 2,6-dibromophenol and 2,4,6-tribromophenol] that occur naturally in enteropneusts. We compared rates of these processes with and without bromoorganics using bulk intertidal sedirnents and burrow wall sediments from 3 enteropneust species (2 containing 2,4-DBP and 1 containing 2,3,4-tribromopyrrole), a mollusc (Mya arenaria) and a polychaete (Nereis virens). Sulfate reduction in bulk sediment was unaffected by bromophenols at concentrations

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“…A variety of bromophenols have been extracted from enteropneusts (see King 1986, Woodin et al 1987, Corgiat et al 1993, King et al 1995. Similar compounds have been described for many other marine taxa (see Neidleman & Geigert 1986), most of which are believed to synthesize them via haloperoxidases (e.g.…”

Section: Introductionmentioning

confidence: 99%

Predator deterrence and 2,4-dibromophenol conservation by the enteropneusts Saccoglossus bromophenolosus and Protoglossus graveolens

Giray¹,

King²

1997

Mar. Ecol. Prog. Ser.

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Saccoglossus Dromophenolosc~s I n g et al., 1994 and Protoglossus graveolens Giray & Klng, 1996 contain high concentratlons of 2,4-dibromophenol (DBP), the functlon of whlch is uncertain. Mature enteropneusts that were collected from the field and maintamed in v~tro without bromide retained DBP, which is inconsistent wlth actlve DBP secretion into the burrow env~ronment. DBP was also conserved during field manipulations that decreased food availability in situ. Further, DBP did not deter predation in feeding experiments 1~1th the anomuran crab Pagurus longicarpus and the polychaetes Glycera dibranchiata, Nereis virens and Nephtysincisa. The hermit crabs fed on S. brornophenolosus readily, and in preference to shrimp, in the field and in laboratory aquaria. Elevated DBP levels were measured in crabs that had recently consumed S. bromophenolosus, and ingested DBP was degraded to 4-bromophenol. Elevated levels of DBP in polychaetes were associated with the disappearance of enteropneusts during in vitro feeding experiments. Control incubations with DBP-containing agar plugs indicated that the polychaetes did not accumulate DBP passively. These results suggest that DBP is not an effective anti-predatory agent against hermit crabs or some predatory polychaetes. A definitive role for DBP in enteropneusts remains to be shown.

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Organohalogen constituents of the acorn worm Ptychodera bahamensis

Cited by 6 publications

References 16 publications

Widespread occurrence of natural halogenated organics among temperate marine infauna

Widespread occurrence of natural halogenated organics among temperate marine infauna

Effect of naturally occurring bromophenols on sulfate reduction and ammonia oxidation in intertidal sediments

Predator deterrence and 2,4-dibromophenol conservation by the enteropneusts Saccoglossus bromophenolosus and Protoglossus graveolens

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