Genetic influence on tonic immobility in chickens
نویسندگان
چکیده
منابع مشابه
Cholinergic blockade and tonic immobility in chickens
To investigate the effects of cholinergic blockade on duration of tonic immobility (TI) and habituation to handling and the TI testing procedure, two groups of cockerel chicks were tested following injection with scopolamine or saline. One week later half of each group was given a second test for TI following injection with saline or scopolamine. Results indicated that scopolamine significantly...
متن کاملTraumatic events and tonic immobility.
Tonic immobility is a basic defense strategy which has not been studied in depth in humans. Data suggest that it may be a relatively frequent phenomenon in victims of rape and sexual abuse, but its occurrence has not been systematically explored in other types of trauma. We carried out a retrospective study in a sample of 100 university students to establish whether tonic immobility varies depe...
متن کاملOn the Mechanism of Tonic Immobility in Vertebrates
Tonic immobility (Crozier, 1923), often more popularly known as "playing possum," "animal hypnosis," or even "feigning death," is exhibited by a great variety of animals. Rabaud (1919) discusses at length the condition as seen in arthropods. He points out that most arthropods have regions of the body which seem to be the loci of tactually excitable reflexes causing the animal to pass into a sta...
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Four genetic stocks of Leghorn pullets were used to evaluate the effects of genetic selection on growth and fearfulness behavior. Three of the stocks were the Ottawa randombred control stocks from 1950 (CS5), 1959 (CS7), and 1972 (CS10). The fourth stock was a 1993 commercial laying stock (CCS) whose ancestors were involved in the formation of the randombred control stocks. Pullets were reared ...
متن کاملOn the Mechanism of Tonic Immobility in Vertebrates
1. The durations of successive periods of induced tonic immobility in the lizard Anolis carolinensis was examined as a function of temperature. An automatic recording method was employed and observations were made of 12,000 to 15,000 immobilizations with six animals over a temperature range of 5 degrees to 35 degrees C. during 5 months. 2. The durations of the immobile periods were found to var...
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ژورنال
عنوان ژورنال: Animal Learning & Behavior
سال: 1974
ISSN: 0090-4996,1532-5830
DOI: 10.3758/bf03199142