Metabolic rates of tsetse flies in the field as measured by the excretion of injected caesium

Autor:	J. W. Hargrove, T. W. Coates
Rok vydání:	1990
Předmět:	Larva Physiology Ecology Glossina morsitans Energy metabolism chemistry.chemical_element Biology Excretion Animal science chemistry Insect Science Caesium Metabolic rate Ecology Evolution Behavior and Systematics Loss rate
Zdroj:	Physiological Entomology. 15:157-166
ISSN:	1365-3032 0307-6962
DOI:	10.1111/j.1365-3032.1990.tb00503.x
Popis:	Teneral tsetse flies, Glossina morsitans morsitans Westw., were injected with labelled caesium (137Cs) 4 days were well fitted by the sum of two exponentials but no smooth function was found to fit all three phases. The loss rate from the rapidly metabolized pool increased exponentially with temperature at the same rate as for male tsetse kept in the dark in the laboratory. However, the loss rate in the field was lower at every temperature, suggesting that these flies live at 2–6oC lower than the average Stevenson screen temperature. Published estimates of hunger cycle and daily flight durations, made on the basis of measured rates of caesium excretion, are invalid because they use the assumption that flies are living in the field at screen temperatures. The data suggest that both sexes have the same metabolic rate up to the age of about 15 days, which implies that the females (being larger and having to nourish a larva in the latter stages of this period) must be less active and/or live at even lower temperatures than the males.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2f42aa17ade7ee24323d1057d641620a https://doi.org/10.1111/j.1365-3032.1990.tb00503.x Zobrazit plný text záznamu Plný text