Preparing the first spider samples for stable isotope analysis

The spider Bagheera kiplingi is 90% vegetarian in Mexico, and 60% vegetarian in Costa Rica. I will test if population density causes this difference by documenting population density of spiders in both countries and artificially increasing the number of spiders per plant in Costa Rica to compare with results in Mexico. In Panama, I will video record and collect samples of Frigga crocuta, which exhibits similar habits to B. kiplingi and might also be vegetarian.