What Azure blues occur in Canada? A re-assessment of Celastrina Tutt species (Lepidoptera, Lycaenidae).

The identity of Celastrina species in eastern Canada is reviewed based on larval host plants, phenology, adult phenotypes, mtDNA barcodes and re-assessment of published data. The status of the Cherry Gall Azure (Celastrina serotina Pavulaan & Wright) as a distinct species in Canada is not supported by any dataset, and is removed from the Canadian fauna. Previous records of this taxon are re-identified as Celastrina lucia (Kirby) and Celastrina neglecta (Edwards).

Influences of anabolic androgens on cardiac growth and metabolism in the rat.

Testosterone, and to a lesser degree methandrostenolone, was shown to influence cardiac growth in immature male rats by affecting protein synthesis and degradation. The nature of cardiac responses to androgen appear to depend on the prevailing experimental conditions. Protein synthesis was inhibited in the castrate rat and was stimulated by subsequent treatment with androgen.

Pressor inhibition of angiotensin-induced ACTH secretion.

We investigated whether the pressor effects of systemically administered angiotensin II (AII) influence ACTH secretion. Adrenalectomized barbiturate-anesthetized mongrel dogs with constant low resting cortisol concentrations due to slow constant cortisol infusion received either bolus injections (2.5 micrograms kg-1) or 15-min i.

Feedback suppression of ACTH secretion by cortisol in dogs: lags after large signals equal those following very small signals.

Previously, low stepwise infusions of cortisol in resting adrenalectomized dogs (plateaux less than or equal to 6 micrograms/dL) were shown to reduce ACTH secretion only after 20 min. In the present study, large, steep-sloped cortisol signals were used to try to evoke faster feedback. Adrenalectomized male mongrel dogs were maintained on exogenous steroids until 48 h before the experiment.

The determination of the specific activity of plasma glycerol.

A method for the determination of the specific activity of plasma glycerol is described. Anionic contaminants are first removed from deproteinzed plasma by anionic exchange resins (treated plasma). Glycerol in treated plasma is then quantitatively converted to glycerol-3-phosphate (G3P), which is isolated by column chromatography and counted for 14C radio-activity.