Stable isotope profiles from subtropical marine gastropods of the family Fasciolariidae: Growth histories and relationships to local environmental conditions

Josiah Strauss, Anton Oleinik, Peter K Swart

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Oxygen and carbon stable isotope profiles were constructed for two species of large subtropical gastropods of the family Fasciolariidae-Triplofusus giganteus and Fasciolaria tulipa-from the Florida Keys and the Bahamas, to evaluate their life history and to assess their potential as paleoenvironmental proxies. Oxygen isotope profiles revealed T. giganteus and F. tulipa grew their shells for 6 and 3 years, respectively. Both mollusks show faster growth rates during the first half of their lifespan. Mean annual temperatures (MAT) derived from oxygen isotopes for T. giganteus were 26.5 °C and for F. tulipa were 26.7 °C, both matching instrumental MATs of 26.7 and 26.5 °C for the Florida Keys. Both shells, however, failed to record entire mean annual temperature ranges (MART). Fasciolaria tulipa yielded a calculated MART of 5.6 °C compared with a measured MART of 9.3 °C, and T. giganteus showed a calculated MART of 6.9 °C compared with a measured MART of 9.4 °C. Carbon isotopes of T. giganteus were ambiguous and reveal no significant relationships with trends in nutrient concentrations (N and P), dissolved oxygen, and dissolved organic carbon, although they did exhibit more negative values concomitant with landfall of Hurricane Irene and trended to increasing values with ontogeny that could reflect migration. Carbon isotopes in F. tulipa were lower during winters, possibly reflecting seasonal upwelling or seagrass-mediated carbon cycling.

Original languageEnglish (US)
Pages (from-to)1593-1602
Number of pages10
JournalMarine Biology
Volume161
Issue number7
DOIs
StatePublished - 2014

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Tulipa
gastropod
stable isotopes
carbon isotope
Gastropoda
stable isotope
environmental conditions
isotopes
history
environmental factors
oxygen isotope
shell (molluscs)
shell
carbon
oxygen
ontogeny
seagrass
hurricane
dissolved organic carbon
dissolved oxygen

ASJC Scopus subject areas

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

Cite this

Stable isotope profiles from subtropical marine gastropods of the family Fasciolariidae : Growth histories and relationships to local environmental conditions. / Strauss, Josiah; Oleinik, Anton; Swart, Peter K.

In: Marine Biology, Vol. 161, No. 7, 2014, p. 1593-1602.

Research output: Contribution to journalArticle

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