Data Set (knb-lter-sbc.86.10)

Data from: Competition among eggs shifts to cooperation along a sperm supply gradient in an external fertilizer

  Summary and Data Links People and Organizations Temporal, Geographic and Taxonomic Coverage Methods and Protocols  
Data Set General Information:
Identifier: knb-lter-sbc.86.10 (in the knb Catalog System)
Alternate Identifier: DOI: 10.6073/pasta/bf95a6c10ed0fa047f5b421492f2fa33
Alternate Identifier: knb-lter-sbc.86

Purple sea urchin, Strongylocentrotus purpuratus, are broadcast spawners. Empirical and theoretical exploration of this trade-off in broadcast spawners has focused heavily on the role of sperm availability. In contrast, the particular manner in which egg concentrations alter both fertilization and polyspermy remains less explored.

These data are from a laboratory experiment with a factorial design (six sperm concentrations x four egg concentrations replicated across multiple male-female pairs), to measure fertilization and polyspermy of purple sea urchins. Data were used to evaluate the impact of egg concentration on fertilization, and to explicitly test for random versus nonlinear sperm-egg collision rates. A new dynamic model was developed that expands upon existing models. Observations of fertilization and polyspermy were also used to parameterize and compare the performance of existing models that included random or or nonlinear collision parameters by utilizing several different basic model forms. For more information, see paper with published results or data set methods.

Results for these data are pulished in Okamoto. D. K. 2016 Competition among eggs shifts to cooperation along a sperm supply gradient in an external fertilizer. The American Naturalist. 187:5, E129-E142. DOI: 10.1086/685813

Short Name: Okamoto 2015 Urchin fertilization experiment
Publication Date: 2015-12-31
Language: english
Time Period:
Detailed Data Description and Download:
Okamoto, 2015 Urchin fertilization and gamete density
Fertilization and polyspermy of purple sea urchins at six sperm concentrations and four egg dilutions, factorial
People and Organizations:
View complete information for all parties
Contact: Information Manager, Santa Barbara Coastal LTER [  email ]
Organization Santa Barbara Coastal LTER
Owner: Okamoto, Daniel K 

Data Set Citation

How to cite this data set: Okamoto, D. K. . 2015. Data from: Competition among eggs shifts to cooperation along a sperm supply gradient in an external fertilizer. Santa Barbara Coastal LTER. doi:10.6073/pasta/bf95a6c10ed0fa047f5b421492f2fa33

Key Words and Terms

By Thesaurus:
LTER Controlled Vocabulary v1 fertilization
Santa Barbara Coastal LTER Habitats Kelp Forest, Reef
LTER Controlled Vocabulary v1: Core Research Areas Population Studies
Strongylocentrotus purpuratus (Purple sea urchin)
Santa Barbara Coastal

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