Use of chemosynthetic biomass by large, mobile, benthic predators in the Gulf of Mexico

Stephen E. MacAvoy, Robert S. Carney, Charles R. Fisher, Stephen A. Macko

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

The Gulf of Mexico supports communities of chemoautotrophic and heterotrophic fauna associated with hydrocarbon seeps. The chemoautotrophic invertebrates, mostly dense epifaunal assemblages of mussels and tubeworms, derive their nutrition from symbiotic relationships with sulfide- or methane-oxidizing bacteria. The extent to which benthic predatory fauna feed on the chemoautotrophic assemblages has been an open question. Owing to differences in stable isotope values between chemosynthetic- and photosynthetic-derived biomass, isotopic characterization of predatory fauna would be useful in determining their dependence upon chemoautotrophs for food. Carbon and sulfur stable isotope analyses reveal that fishes with similar feeding strategies (rat tail [Nezumia sp.] and eels [Synaphobranchus sp., Ophicthus cruentifer and Dysomma rugosa]) have similar δ13C values (-32.7 and -42.5‰, respectively), reflecting chemoautotrophic carbon. Large vagrant predators/scavengers such as isopods Bathynomus giganteus, hagfish Eptatretus sp. and spider crabs Rochina crassa, have isotope values closer to oceanic ranges (δ13C: -20 to -18‰; δ34S: 18 to 20‰), although some individual Eptatretus sp. and R. crassa show a chemosynthetic component. Colonist invertebrates, such as the sea star (Sclerasterias cf. tanneri) and a predatory snail Buccinum canetae, have greatly depleted δ13C and δ34S values, indicating an almost 100% reliance on seep production. Nitrogen isotope ratios are depleted (-19‰) in some seep areas, and B. canetae and Synaphobranchus sp. reflect the 15N depletion (-10 and -3‰ respectively). On a species-specific basis, some mobile benthic predators from the background fauna obtain close to 100% of their nutrition from seep production, indicating that they are residents of the seeps. There is a high degree of movement in and out of the seep habitat by vagrant benthic predators, and although the majority derive most of their nutritional needs from photosynthetic production, the incorporation of chemosynthetic production is substantial.

Original languageEnglish (US)
Pages (from-to)65-78
Number of pages14
JournalMarine Ecology Progress Series
Volume225
DOIs
StatePublished - Jan 11 2002

Fingerprint

Gulf of Mexico
Eptatretus
fauna
predator
predators
nutrition
biomass
stable isotope
invertebrate
Bathynomus giganteus
hydrocarbon seep
stable isotopes
isotopes
invertebrates
carbon
sulfur isotope
isopod
nitrogen isotope
scavenger
Majidae

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

Cite this

MacAvoy, Stephen E. ; Carney, Robert S. ; Fisher, Charles R. ; Macko, Stephen A. / Use of chemosynthetic biomass by large, mobile, benthic predators in the Gulf of Mexico. In: Marine Ecology Progress Series. 2002 ; Vol. 225. pp. 65-78.
@article{506dfcabc92a4fa39d64932dcda62baa,
title = "Use of chemosynthetic biomass by large, mobile, benthic predators in the Gulf of Mexico",
abstract = "The Gulf of Mexico supports communities of chemoautotrophic and heterotrophic fauna associated with hydrocarbon seeps. The chemoautotrophic invertebrates, mostly dense epifaunal assemblages of mussels and tubeworms, derive their nutrition from symbiotic relationships with sulfide- or methane-oxidizing bacteria. The extent to which benthic predatory fauna feed on the chemoautotrophic assemblages has been an open question. Owing to differences in stable isotope values between chemosynthetic- and photosynthetic-derived biomass, isotopic characterization of predatory fauna would be useful in determining their dependence upon chemoautotrophs for food. Carbon and sulfur stable isotope analyses reveal that fishes with similar feeding strategies (rat tail [Nezumia sp.] and eels [Synaphobranchus sp., Ophicthus cruentifer and Dysomma rugosa]) have similar δ13C values (-32.7 and -42.5‰, respectively), reflecting chemoautotrophic carbon. Large vagrant predators/scavengers such as isopods Bathynomus giganteus, hagfish Eptatretus sp. and spider crabs Rochina crassa, have isotope values closer to oceanic ranges (δ13C: -20 to -18‰; δ34S: 18 to 20‰), although some individual Eptatretus sp. and R. crassa show a chemosynthetic component. Colonist invertebrates, such as the sea star (Sclerasterias cf. tanneri) and a predatory snail Buccinum canetae, have greatly depleted δ13C and δ34S values, indicating an almost 100{\%} reliance on seep production. Nitrogen isotope ratios are depleted (-19‰) in some seep areas, and B. canetae and Synaphobranchus sp. reflect the 15N depletion (-10 and -3‰ respectively). On a species-specific basis, some mobile benthic predators from the background fauna obtain close to 100{\%} of their nutrition from seep production, indicating that they are residents of the seeps. There is a high degree of movement in and out of the seep habitat by vagrant benthic predators, and although the majority derive most of their nutritional needs from photosynthetic production, the incorporation of chemosynthetic production is substantial.",
author = "MacAvoy, {Stephen E.} and Carney, {Robert S.} and Fisher, {Charles R.} and Macko, {Stephen A.}",
year = "2002",
month = "1",
day = "11",
doi = "10.3354/meps225065",
language = "English (US)",
volume = "225",
pages = "65--78",
journal = "Marine Ecology - Progress Series",
issn = "0171-8630",
publisher = "Inter-Research",

}

Use of chemosynthetic biomass by large, mobile, benthic predators in the Gulf of Mexico. / MacAvoy, Stephen E.; Carney, Robert S.; Fisher, Charles R.; Macko, Stephen A.

In: Marine Ecology Progress Series, Vol. 225, 11.01.2002, p. 65-78.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Use of chemosynthetic biomass by large, mobile, benthic predators in the Gulf of Mexico

AU - MacAvoy, Stephen E.

AU - Carney, Robert S.

AU - Fisher, Charles R.

AU - Macko, Stephen A.

PY - 2002/1/11

Y1 - 2002/1/11

N2 - The Gulf of Mexico supports communities of chemoautotrophic and heterotrophic fauna associated with hydrocarbon seeps. The chemoautotrophic invertebrates, mostly dense epifaunal assemblages of mussels and tubeworms, derive their nutrition from symbiotic relationships with sulfide- or methane-oxidizing bacteria. The extent to which benthic predatory fauna feed on the chemoautotrophic assemblages has been an open question. Owing to differences in stable isotope values between chemosynthetic- and photosynthetic-derived biomass, isotopic characterization of predatory fauna would be useful in determining their dependence upon chemoautotrophs for food. Carbon and sulfur stable isotope analyses reveal that fishes with similar feeding strategies (rat tail [Nezumia sp.] and eels [Synaphobranchus sp., Ophicthus cruentifer and Dysomma rugosa]) have similar δ13C values (-32.7 and -42.5‰, respectively), reflecting chemoautotrophic carbon. Large vagrant predators/scavengers such as isopods Bathynomus giganteus, hagfish Eptatretus sp. and spider crabs Rochina crassa, have isotope values closer to oceanic ranges (δ13C: -20 to -18‰; δ34S: 18 to 20‰), although some individual Eptatretus sp. and R. crassa show a chemosynthetic component. Colonist invertebrates, such as the sea star (Sclerasterias cf. tanneri) and a predatory snail Buccinum canetae, have greatly depleted δ13C and δ34S values, indicating an almost 100% reliance on seep production. Nitrogen isotope ratios are depleted (-19‰) in some seep areas, and B. canetae and Synaphobranchus sp. reflect the 15N depletion (-10 and -3‰ respectively). On a species-specific basis, some mobile benthic predators from the background fauna obtain close to 100% of their nutrition from seep production, indicating that they are residents of the seeps. There is a high degree of movement in and out of the seep habitat by vagrant benthic predators, and although the majority derive most of their nutritional needs from photosynthetic production, the incorporation of chemosynthetic production is substantial.

AB - The Gulf of Mexico supports communities of chemoautotrophic and heterotrophic fauna associated with hydrocarbon seeps. The chemoautotrophic invertebrates, mostly dense epifaunal assemblages of mussels and tubeworms, derive their nutrition from symbiotic relationships with sulfide- or methane-oxidizing bacteria. The extent to which benthic predatory fauna feed on the chemoautotrophic assemblages has been an open question. Owing to differences in stable isotope values between chemosynthetic- and photosynthetic-derived biomass, isotopic characterization of predatory fauna would be useful in determining their dependence upon chemoautotrophs for food. Carbon and sulfur stable isotope analyses reveal that fishes with similar feeding strategies (rat tail [Nezumia sp.] and eels [Synaphobranchus sp., Ophicthus cruentifer and Dysomma rugosa]) have similar δ13C values (-32.7 and -42.5‰, respectively), reflecting chemoautotrophic carbon. Large vagrant predators/scavengers such as isopods Bathynomus giganteus, hagfish Eptatretus sp. and spider crabs Rochina crassa, have isotope values closer to oceanic ranges (δ13C: -20 to -18‰; δ34S: 18 to 20‰), although some individual Eptatretus sp. and R. crassa show a chemosynthetic component. Colonist invertebrates, such as the sea star (Sclerasterias cf. tanneri) and a predatory snail Buccinum canetae, have greatly depleted δ13C and δ34S values, indicating an almost 100% reliance on seep production. Nitrogen isotope ratios are depleted (-19‰) in some seep areas, and B. canetae and Synaphobranchus sp. reflect the 15N depletion (-10 and -3‰ respectively). On a species-specific basis, some mobile benthic predators from the background fauna obtain close to 100% of their nutrition from seep production, indicating that they are residents of the seeps. There is a high degree of movement in and out of the seep habitat by vagrant benthic predators, and although the majority derive most of their nutritional needs from photosynthetic production, the incorporation of chemosynthetic production is substantial.

UR - http://www.scopus.com/inward/record.url?scp=0037059634&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037059634&partnerID=8YFLogxK

U2 - 10.3354/meps225065

DO - 10.3354/meps225065

M3 - Article

VL - 225

SP - 65

EP - 78

JO - Marine Ecology - Progress Series

JF - Marine Ecology - Progress Series

SN - 0171-8630

ER -