Table of Contents

• Coverage
• Dataset Description
  • Methods & Sampling
  • Data Processing Description
• Data Files
• Related Publications
• Parameters
• Instruments
• Deployments
• Project Information
• Funding

These data include information on the reproductive biology and ecology of Ceraesignum (formerly Dendropoma) maximum.

Related Datasets:

• Reef Locations: https://www.bco-dmo.org/dataset/645257
• Phillips and Shima 2010 - Brooding and Size: https://www.bco-dmo.org/dataset/722287
• Phillips and Shima 2010 - Development Stage Capsule: https://www.bco-dmo.org/dataset/722344 (The current page)
• Phillips and Shima 2010 - Egg Number and Female Size: https://www.bco-dmo.org/dataset/724569
• Phillips and Shima 2010 - Larvae per Capsule: https://www.bco-dmo.org/dataset/724586
• Phillips and Shima 2010 - Size and Sex: https://www.bco-dmo.org/dataset/724601

Individual Dendropoma (now Ceraesignum) maximum were collected haphazardly from seven sites in April and September 2008. Snails were removed with their shells in tact using a chisel and hammer. At the lab, snails were removed from the shell. Females were determine by the presence of a mantle slit and appearance of gonads. Length of capsules were measured in April to the nearest 0.01mm. Early stage embryos have no definitive larval structures yet. They are yellow in color.  Mid stage embryos had some larval structures-some pigment but still quite yellow, eyes, simple shell, small velum.  Late stage are close to hatching so well developed with large bi-lobed, darkly pigmented bands on velum, eyes, sculptured shell, well-developed foot.

BCO-DMO Processing:

• added conventional header with dataset name, PI name, version date
• modified parameter names to conform with BCO-DMO naming conventions
• empty values were replaced with 'nd' (no data).

Description from NSF abstract:
Ecological surprises are most likely to be manifest in diverse communities where many interactions remain uninvestigated. Coral reefs harbor much of the world's biodiversity, and recent studies by the investigators suggest that one overlooked, but potentially important, biological interaction involves vermetid gastropods. Vermetid gastropods are nonmobile, tube-building snails that feed via an extensive mucus net. Vermetids reduce coral growth by up to 80%, and coral survival by as much as 60%. Because effects vary among coral taxa, vermetids may substantially alter the structure of coral communities as well as the community of fishes and invertebrates that inhabit the coral reef.

The investigators will conduct a suite of experimental and observational studies that: 1) quantify the effects of four species of vermetids across coral species to assess if species effects and responses are concordant or idiosyncratic; 2) use meta-analysis to compare effects of vermetids relative to other coral stressors and determine the factors that influence variation in coral responses; 3) determine the role of coral commensals that inhabit the branching coral, Pocillopora, and evaluate how the development of the commensal assemblage modifies the deleterious effects of vermetids; 4) determine how vermetid mucus nets affect the local environment of corals and evaluate several hypotheses about proposed mechanisms; and 5) assess the long-term implications of vermetids on coral communities and the fishes and invertebrates that depend on the coral.

Note: The Principal Investigator, Dr. Craig W. Osenberg, was at the University of Florida at the time the NSF award was granted. Dr. Osenberg moved to the University of Georgia during the summer of 2014 (current contact information).