Total mass in air and water (grams) were determined to assess crab body density (grams per cubic centimeter) as
Body density = [mass in air/(mass in air - mass in water)] x density of water
Crabs that died during the experiments were also measured and dissected, but their body density was not assessed.
Three-factor ANOVAs (experiment 1: molt, ration, and temperature) and 2-factor ANOVAs (experiment 2: molt and temperature regime) were used to test for molt and treatment effects on crab body density (untransformed data), digestive gland, merus muscle and gonad mass (log-transformed data), and tissue moisture contents (arcsin-transformed data).
Body density decreased markedly at the time of ecdysis, but was also influenced by ration and temperature particularly in nonmolters (Fig.
To help sumo wrestlers maintain this delicate balance, researchers at Hirosaki University, Aomori, Japan, sought a method to accurately assess their body density