Influence of Environmental Factors on Longevity of the Brown Recluse Spider1

Autor:	Ronald R. Hocking, B. R. Norment, Fred M. Eskafi, James L. Frazier
Rok vydání:	1977
Předmět:	Spider General Veterinary Vapour Pressure Deficit Vapor pressure media_common.quotation_subject Body water Longevity Biology Time of death Toxicology Infectious Diseases Weight loss Insect Science medicine Parasitology medicine.symptom Brown Recluse Spider media_common
Zdroj:	Journal of Medical Entomology. 14:221-228
ISSN:	1938-2928 0022-2585
Popis:	Field-collected adults of Loxosceles reclusa were examined for weight loss, longevity, and body water content at death under the influence of food, water, sex, RH, ambient water vapor pressure, vapor pressure deficit, and temperature. Data were statistically analyzed and fitted with models. The amount of water left in the body at the time of death was independent of environmental factors, consisting of 28.77–42.68% of the original body weight. The natural logarithm of longevity varied linearly with vapor pressure, but temperature had a nonlinear effect. Spiders engorged in the field prior to tests generally survived longer (124–222 days) than those field-collected, starved, and subsequently fed on water (55–94 days). Percentage weight loss per day was exponentially related to longevity and was influenced primarily by temperature and vapor pressure deficit. Original weight, RH, and sex did not significantly influence longevity, weight loss, or the amount of body water content at death. Physiological adaptations of the spider to its natural habitat are discussed with reference to its water relations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e64030abe357bb8edfcbe451d622af36 https://doi.org/10.1093/jmedent/14.2.221 Zobrazit plný text záznamu