| Contributors | Affiliation | Role |
|---|---|---|
| Phillips, Nicole | Victoria University of Wellington | Principal Investigator, Contact |
| Biddle, Mathew | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
These data are from an experiment that tests the nutritional strategies of Ceraesignum (Dendropoma) maximum larvae. For additional datasets see related files.
Related Datasets:
In this experiment, larvae were placed into feeding treatments with different types of phytoplankton to determine larval nutritional strategies.
Larvae hatched on Sept 24, 2009 and were distributed into tubs on 500mL filtered sea water (FSW). Three larval feeding treatments with different species of phytoplankton, all at 10 x 104 cells mL-1: Isochrysis galbana (‘‘Iso’’ treatment), Dunaliella tertiolecta (‘‘Dun’’ treatment), a 1:1 ratio of I. galbana and D. tertio- lecta (‘‘Mixed’’ treatment), plus an Unfed treatment in which larvae were raised in FSW. Investigators used a hemocytometer to count algal cells and calculate densities of phytoplankton stocks and amount of stock to add to containers for each treatment. On days 3, 6, 9 and 18, six larvae per container were haphazardly sampled and preserved them in 70% ethanol for later measurement of protoconch height Protoconch height was measured in microns. Each larvae was sampled once. Sometimes only 5 larvae were in the preserved vials, so the 6th one is marked as missing. On day 0 (day of hatch) larvae were samples from those placed in experiment, but the data are not included in any analysis.
BCO-DMO Processing:
| File |
|---|
Phillips_2011_Expt1_LarvalSize.csv (Comma Separated Values (.csv), 2.08 KB) MD5:e04b5ac78bb8cab1ad92dbc92a3b6578 Primary data file for dataset ID 725317 |
| Parameter | Description | Units |
| Food_treatment | type of food given to larvae (Isochrysis galbana = Iso; Dunaliella tertiolecta = Dun; 1:1 ratio of Iso and Dun = Mixed) | unitless |
| Replicate_tub | replicate tub number | unitless |
| Larva_number | larvae id | unitless |
| Day_3 | protoconch height of 3 day post hatch larvae | microns (um) |
| Day_6 | protoconch height of 6 day post hatch larvae | microns (um) |
| Day_9 | protoconch height of 9 day post hatch larvae | microns (um) |
| Day_18 | protoconch height of 18 day post hatch larvae | microns (um) |
| Day_0_size_at_hatch | Day of hatch larvae measured at the start (before going into containers) not in analysis | microns (um) |
| Dataset-specific Instrument Name | hemocytometer |
| Generic Instrument Name | Hemocytometer |
| Dataset-specific Description | Investigators used a hemocytometer to count algal cells and calculate densities of phytoplankton stocks and amount of stock to add to containers for each treatment. |
| Generic Instrument Description | A hemocytometer is a small glass chamber, resembling a thick microscope slide, used for determining the number of cells per unit volume of a suspension. Originally used for performing blood cell counts, a hemocytometer can be used to count a variety of cell types in the laboratory. Also spelled as "haemocytometer". Description from:
http://hlsweb.dmu.ac.uk/ahs/elearning/RITA/Haem1/Haem1.html. |
| Website | |
| Platform | Osenberg et al Moorea |
| Start Date | 2003-05-19 |
| End Date | 2015-07-12 |
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).
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) |