title: The energy budget of Porcellio spinicornis Say (Porcellionidae, Isopoda) under laboratory conditions.
abstract: The rate of energy flow in Porcellio spinicornis was investigated in a select group of a laboratory population. The consumption, assimilation and production were calculated to be 1 233, 1 002 and 304 cal/year, respectively, in the male, and 1 261, 1 198 and 429 cal/year, respectively, in the female. Ignoring loss due to mortality, and applying the population density of 2 295 m2 in the laboratory colony, the isopod population should consume 2 861.8 kcal m-2 year-1, resulting in an assimilation of 2 524.5 kcal m-2 year-1 and a total productivity of 841.1 kcal m-2 year-1.
mesh_terms: D000641:Ammonia / Q000096:biosynthesis; D000818:Animals; D004447:Echinodermata / Q000502:physiology*; D002149:Energy Intake; D004734:Energy Metabolism; D005260:Female; D008297:Male; D010101:Oxygen Consumption; D012737:Sex Factors
chemical_list: D000641:Ammonia