On this Picostat.com statistics page, you will find information about the SeaSlugs data set which pertains to Sea Slugs. The SeaSlugs data set is found in the Stat2Data R package. Try to load the SeaSlugs data set in R by issuing the following command at the console data("SeaSlugs"). This may load the data into a variable called SeaSlugs. If R says the SeaSlugs data set is not found, you can try installing the package by issuing this command install.packages("Stat2Data") and then attempt to reload the data with library("Stat2Data") followed by data("SeaSlugs"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing SeaSlugs at the command-line which should display the entire dataset.
If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the SeaSlugs R data set. The size of this file is about 307 bytes.
Metamorphose rates for sea slugs exposed to different water samples
A dataset with 36 observations on the following 2 variables.
| Minutes after tide come in
| Proportion of 15 sea slug larvae that metamorphose
Sea slugs, common on the coast of southern California, live on vaucherian
seaweed. The larvae from these sea slugs need to locate this type of seaweed to survive. A study
was done to try to determine whether chemicals that leach out of the seaweed attract the larvae.
Seawater was collected over a patch of this kind of seaweed at 5-minute intervals as the tide was
coming in and, presumably, mixing with the chemicals. The idea was that as more seawater came
in, the concentration of the chemicals was reduced. Each sample of water was divided into 6 parts.
Fifteen larvae were then introduced to this seawater to see what percentage metamorphosed (an indication that the
desired chemical was detected).
Data downloaded from http://www.stat.ucla.edu/projects/datasets/seaslug-explanation.html
A paper based on these data: Krug, P.J. and R.K. Zimmer. 2000b. Larval settlement: chemical markers
for tracing production, transport, and distribution of a waterborne cue.
Marine Ecology Progress Series, vol. 207: 283-296.
Dataset imported from https://www.r-project.org.