Population dynamics of mites in slow-release sachets used in biological control: a new study methodology.

Predatory mite species (Acari: Phytoseiidae) are essential tools in the biological control of greenhouses pests. The natural enemies can be released directly into a crop. A better, partly preventive system is to place slow-release sachets on the plants.

Assessment of Fatty liver syndrome and its predisposing factors in a dairy herd from Venezuela.

The present on-farm research evaluated the occurrence of fatty liver syndrome and its predisposing risk factors for multiparous dairy cows from a commercial herd in Venezuela. Liver biopsy samples were collected at 35 days (d) prepartum (Holstein, n = 14; Holstein × Carora crossbred, n = 17) as well as 1 to 7 d (Holstein, n = 8; Holstein × Carora crossbred, n = 11) and 28 to 35 d (Holstein, n = 6; Holstein × Carora crossbred, n = 14) postpartum in order to analyse hepatic triacylglycerols (TAG, % wet basis) and glycogen concentrations. At postpartum, an occurrence of 72.

Chemical composition and antibacterial activity of the essential oil from fruits of Bursera tomentosa.

The hydrodistilled oil from the fruits of Bursera tomentosa, obtained in 0.2% yield, was analyzed by GC-MS. Nine components were identified, which made up 99.

Acute lecozotan administration increases learning and memory in rats without affecting anxiety or behavioral depression.

Lecozotan is a selective serotonergic 5-HT(1A) receptor antagonist previously shown to enhance task performance efficiency in aged rhesus monkeys. In the present report we tested the ability of this drug to modify memory and learning in rats during a modified passive avoidance response test, and also tested its effect on anxiety with the elevated plus maze, and behavioral depression in the inescapable swim test. Lecozotan enhanced memory in a dose-dependent manner (0, 0.

Effect of hyperadrenocorticism and diabetes mellitus on serum progesterone concentrations during early metoestrus of pregnant and non-pregnant cycles induced by pregnant mares' serum gonadotrophin in domestic dogs.

The intramuscular (i.m.) administration of pregnant mares' serum gonadotrophin (PMSG) (20 iu kg-1 day-1 for 5 days) followed by an injection of human chorionic gonadotrophin (500 iu, i.